PP, or polypropylene, is a thermoplastic resin produced by polymerization of propylene monomers and is one of the most widely used general purpose plastics. It has a range of excellent properties that make it important in many fields.
In terms of physical properties, polypropylene has a low density of around 0.90 - 0.91g/cm³, making it one of the lightest varieties of existing plastics, a characteristic that gives it a significant advantage in areas requiring lightweighting. With a melting point of around 165 - 170°C, it has good heat resistance and can be used for long periods of time at around 100°C, and can even withstand temperatures as high as 120°C for short periods of time, making it suitable for products that need to be in contact with hot water. The mechanical properties of polypropylene are also excellent, with high tensile strength and rigidity, and a certain degree of toughness, but the toughness will be reduced at low temperatures, easy to embrittle. In addition, it has excellent chemical stability, good corrosion resistance to most acids, alkalis, salts and organic solvents, good electrical insulation properties, and not easy to absorb water, water absorption rate is very low, these characteristics further broaden its scope of application.
In terms of production methods, the polymerization process of polypropylene mainly includes solution method, native method and gas phase method. Solution method is to dissolve the propylene monomer in the solvent for polymerization reaction, reaction conditions are mild, easy to control, but the solvent recovery cost is higher. The body method does not need solvent, propylene monomer in the liquid state directly polymerization, the process is relatively simple, low energy consumption, high product purity. Gas-phase method is in the gaseous propylene polymerization, reaction pressure and temperature is lower, less investment in equipment, production flexibility, can adapt to the production of different grades of polypropylene, is currently one of the more widely used process.
Depending on the molecular structure, polypropylene can be categorized into isotactic polypropylene (IPP), intergraded polypropylene (SPP) and atactic polypropylene (APP). Isotropic polypropylene is currently the largest production and the most widely used varieties, with a high degree of crystallinity, so the melting point is high, high strength, good rigidity, excellent overall performance, widely used in various fields. Intergauge polypropylene has a lower degree of crystallinity, better flexibility and transparency, but less production, mainly used in some special areas, such as packaging film. Atactic polypropylene has a very low crystallinity, soft texture and good fluidity, and is mainly used as an additive, such as to improve the processing performance of other plastics or as a base material for hot melt adhesives.
In practical applications, polypropylene figures in a number of industries. In the packaging field, polypropylene film is an important form of application, such as biaxially oriented polypropylene film (BOPP), with high transparency, good gloss, high mechanical strength, chemical resistance, etc., is widely used in food, pharmaceuticals, cosmetics, etc.; polypropylene woven bags are commonly used in the packaging of fertilizers, grains, cement and other bulk items because of its high strength and abrasion resistance. In the automotive industry, polypropylene can be used to make automotive interior parts, such as instrument panels, door panels, seat backs, etc., can also be used for exterior parts, such as bumpers, etc., through the addition of glass fibers and other reinforcing materials, but also to improve its strength and heat resistance, used in the engine peripheral parts, helping automotive lightweight.
In the field of home appliances, polypropylene is often used to make parts such as washing machine inner tubes, refrigerator drawers, and air conditioner housings, because it is chemically resistant, easy to clean, and low-cost. In the field of daily necessities, polypropylene can be made into a variety of plastic containers, such as buckets, basins, lunch boxes, etc., can also be used for the production of toys, hangers, brooms and other daily necessities, and its non-toxic, temperature-resistant properties make it suitable for contact with food. In the medical field, polypropylene that meets hygiene standards can be used to make disposable syringes, infusion sets, medical device packaging, etc. to ensure medical safety.
In addition, polypropylene has important applications in the agricultural field, such as the production of agricultural films used to cover farmland, play a role in heat preservation, moisture preservation, and promote the growth of crops; it can also be used to make irrigation pipelines, which are highly corrosion-resistant and have a long service life. In the construction field, polypropylene pipes are used for water supply and drainage systems because they are lightweight, corrosion-resistant and easy to install.
With the development of technology, polypropylene can be modified to further enhance its performance, such as reinforced polypropylene, toughened polypropylene, flame retardant polypropylene, etc., which expands its application in high-end fields and enables it to play an important role in more scenarios. At the same time, polypropylene's recyclability is better, and recycled polypropylene can be used to make recycled plastic products, which is in line with the trend of environmentally sustainable development.
If you are in need of PP raw materials, why don't you choose to cooperate with Ningbo Chaohe Plastic Co. We will be happy to provide you with high quality materials and first-class customer service. We are looking forward to cooperating with you to create a bright future!
Polystyrene (PS) prices are affected by a combination of factors, as follows:
- Raw material price fluctuations::
- crude oil price: Crude oil is the basic raw material for the production of styrene, which in turn is the key monomer for the synthesis of polystyrene. Therefore, changes in crude oil prices have a significant impact on the price of polystyrene. When the crude oil price rises, the cost of styrene production increases, which in turn drives up the price of polystyrene. For example, when crude oil supply is unstable due to international tensions, crude oil price rises sharply, the cost pressure of styrene producers increases sharply, and the market price of polystyrene also rises. Typically, for every US$10/barrel increase in oil prices, the cost of styrene increases by about RMB 400/tonne, which is directly transferred to the price of XPS.
- Styrene pricesAs the direct raw material for polystyrene production, styrene price fluctuation is highly correlated with the price of polystyrene. 2024 - 2025, styrene market is affected by factors such as plant maintenance, price change of raw material pure benzene and downstream demand expectation, and price fluctuation is frequent. For example, in the first half of 2024, supported by pure benzene, styrene price goes up all the way, in the range of RMB 8400 - 9800 / ton; in the second half of 2024, due to the increase in the supply of raw material pure benzene and the weakening of the downstream demand expectations, the center of gravity of styrene price shifts downward. These changes in styrene prices directly lead to the same fluctuation of polystyrene prices.
- Supply and demand in the market::
- Supply side: If the capacity of polystyrene producers expands, or if new producers enter the market, supply increases significantly without a synchronized increase in demand, and the market becomes oversupplied, which can lead to a decline in polystyrene prices.2024 The German polystyrene market, which is well-supplied or even oversupplied as a result of high inventory levels and steady production by major manufacturers, and a large influx of imports from regions such as Asia, has made the price of general-purpose Polystyrene (GPPS) prices have continued to fall in July, and as of the third week of July, prices stood at $1,810 per metric ton (FD - Hamburg basis), down 2.4% from the previous week, and 4.8% overall since the beginning of the month. Conversely, when some production units are shut down due to breakdowns, maintenance or force majeure factors, resulting in a reduction in supply, an oversupply situation can drive polystyrene prices higher if demand remains stable or grows.
- Demand side: Polystyrene is widely used in many industries such as packaging, electronics and electrical appliances, construction, toys and so on. When these downstream industries develop well and demand for polystyrene is strong, it will drive its price up. In the electronics and electrical appliances industry, with the accelerated replacement of home appliances and the emergence of new electronic products, the demand for polystyrene continues to grow, which in turn supports the price of polystyrene . On the contrary, if the market downturn in the downstream industry shrinks the demand, such as the decrease in demand for polystyrene in major downstream industries such as automobile production of electric vehicles and the construction industry in 2024, it will put downward pressure on the price of polystyrene.
- Macroeconomic environment::
- economic growth story: In times of economic prosperity, production activities in various industries are active, increasing the demand for polystyrene and driving up prices. For example, when the GDP growth rate of a country or region is high, the expansion of construction, manufacturing and other industries, the demand for polystyrene products such as packaging materials, building insulation materials (e.g., expandable polystyrene EPS used for building insulation), and so on, greatly increased, which led to the rise in the price of polystyrene. However, in the stage of economic recession or slowdown, enterprise investment and residents' willingness to consume decreases, the demand for polystyrene in downstream industries decreases, and the price tends to fall.
- Inflation and interest rates: Inflation can lead to higher production costs, including the cost of raw materials, labor, and transportation, which can drive up the price of polystyrene. Interest rate changes will also affect the price of polystyrene, higher interest rates will increase the cost of enterprise financing, inhibit investment and consumption, reduce the demand for polystyrene, so that the price fell; on the contrary, lower interest rates to stimulate economic growth, increase demand, and is conducive to the rise in the price of polystyrene .
- Policies and regulations::
- environmental policy: Increasingly stringent environmental protection policies have imposed higher requirements on polystyrene producers. Enterprises need to invest more funds in the construction and operation of environmental protection facilities to meet environmental standards such as pollutant emissions, which increases production costs, which in turn may drive up the price of polystyrene. In some areas, due to environmental requirements, the emission of volatile organic compounds (VOCs) in the production process of polystyrene is strictly controlled, and some small and medium-sized production capacity enterprises are unable to meet the standards and cut production or shut down production, which reduces the supply in the market, and may also contribute to the increase in prices.
- Import and export policy: Policies such as import and export tariffs and trade quotas affect the international trade pattern of polystyrene, which in turn affects prices. If a country raises import tariffs on polystyrene, it will increase the cost of imports, reduce the volume of imports, and reduce supply in the domestic market, driving up prices. Conversely, lowering tariffs or increasing import quotas will increase the volume of imports, intensify competition in the market, and prices may fall .
- competition from substitute goods: Plastic materials such as polypropylene (PP) and polyethylene (PE) can be used as substitutes for polystyrene in some applications. When the price of substitutes decreases and their performance meets the requirements for use, downstream enterprises may choose substitutes and reduce the demand for polystyrene, resulting in a decrease in the price of polystyrene. In the packaging sector, if the price of polypropylene decreases, some companies that originally used polystyrene packaging may switch to polypropylene packaging, resulting in a decrease in polystyrene's market share in this sector and price suppression . On the contrary, if the price of substitutes increases, the competitiveness of polystyrene increases and the price may rise.
PS resin, that is, polystyrene (Polystyrene), is a thermoplastic resin polymerized from styrene as the main raw material, is one of the five major general-purpose plastics, with many excellent characteristics, widely used in many fields.
From the point of view of physical properties, PS resin is a glossy, transparent bead or granular solid, density of about 1.04 - 1.09g/cm³, transparency of up to 88% - 92%, refractive index of 1.59 - 1.60 between the appearance of very beautiful. Its melting temperature is 150 - 180 ℃, thermal decomposition temperature of 300 ℃, heat distortion temperature of 70 - 100 ℃, long-term use of 60 - 80 ℃, which makes it in some of the temperature requirements of the scene can play a role in some of the PS resin electrical insulation properties, volume resistivity and surface resistivity are excellent. Volume resistivity and surface resistivity are very high, and is not affected by changes in temperature and humidity, but also not affected by corona discharge, so in the field of electronics and electrical appliances are very useful. At the same time, it also has good processing fluidity, easy to mold, can be injection molding, extrusion, blow molding, foaming, thermoforming, bonding, coating, welding, machining, printing and other methods of processing into a variety of parts, especially suitable for injection molding. In addition, PS resin is easy to color, can be made into colorful products, but also has a good rigidity and chemical resistance, can withstand some mineral oil, organic acids, alkalis, salts, low-grade alcohols and their aqueous solutions. However, it also has some shortcomings, such as brittle and easy to crack, low impact strength, poor heat resistance, not resistant to boiling water, can only be used at lower temperatures and lower loads, poor sunlight resistance, and flammable, combustion will be black smoke and produce a special odor.
In terms of production methods, there are mainly propriety polymerization method and suspension polymerization method. In this method, styrene monomer is sent to pre-polymerization kettle, adding a small amount of additives and initiators, and pre-polymerization is carried out at 95 - 115 ℃, when the conversion rate reaches 20% - 35%, and then sent to the tower reactor to carry out continuous polymerization, and the temperature of polymerization is gradually raised to 170 ℃ or so in order to realize the complete conversion, and the unreacted styrene is recovered from the top of the tower. The unreacted styrene is recovered from the top of the tower, and the polymer is discharged from the bottom of the tower and extruded for pelletizing. Suspension polymerization method is to use styrene as monomer, water as a medium, add gelatin, starch, polyvinyl alcohol and other protective gum, or magnesium carbonate, magnesium silicate and other insoluble inorganic salts as a dispersant, as well as maleic anhydride - styrene copolymer sodium salt as a co-dispersant, to benzoyl peroxide as an initiator, initiating polymerization at about 85 ℃, but also in the high-pressure polymerization autoclave at 100 ℃. It can also be polymerized at high temperature above 100℃ in autoclave, and finally washed, separated and dried to obtain colorless and transparent fine bead resin.
According to the differences in performance and use, PS resin is mainly divided into general-purpose polystyrene (GPPS), high-impact polystyrene (HIPS) and evaporable polystyrene (EPS) and other types. General-purpose polystyrene is a thermoplastic resin, showing a glossy transparent, with good electrical insulation properties, processing fluidity, rigidity, and chemical resistance, but it is brittle and easy to crack, low impact strength, mainly used in the manufacture of injection molded parts, audio-visual products, lighting products, transparent stationery, food and cosmetic display containers and other products. High impact polystyrene is added to polystyrene polybutyl rubber particles and other substances to improve the impact strength, but the product is opaque, commonly used in the production of electronic product shells, cassette recorders shells, daily necessities, home appliances and small power tools shells, and other products that require high impact resistance. Expandable polystyrene is a low boiling point physical blowing agent added to PS resin, processed by heat foaming, light weight, heat insulation, sound insulation, shockproof and other characteristics, widely used in the production of fast-food lunch boxes, construction panels, building thermal insulation materials, fragile cushioning packaging materials and other foam products.
In terms of practical applications, the figure of PS resin can be seen everywhere. In the field of electronic and electrical appliances, due to its excellent electrical insulation, can be used to manufacture connectors, switch parts, small electric cover, etc., to ensure the stable transmission of equipment current; in the field of daily necessities, GPPS easy to process, easy to color the characteristics of the production of transparent cups, tableware, stationery supplies, etc., the ideal material; in the toy industry, PS resin can be made into a variety of lovely shapes, colorful toys; in the field of building materials, EPS can be used for building thermal insulation, reduce building energy consumption, PS resin can also be made into stone, wood-like decorative panels for stone. In the field of building materials, EPS can be used for building insulation and thermal insulation, reduce building energy consumption, PS resin can also be made of imitation stone, imitation wood decorative panels for indoor and outdoor decoration; in the packaging industry, PS resin molding is good, can be made of disposable lunch boxes, food packaging film, packaging containers, etc., to play a role in the protection and display of products; in the medical industry, PS materials in line with health standards can be made of medical equipment shell, disposable syringe parts, etc.. In the medical industry, PS material conforming to hygiene standards can be used to make the shell of medical instruments, disposable syringe parts, etc.
With the continuous progress of science and technology, PS resin is also constantly improving and innovating, through chemical modification or physical modification, to enhance its performance, expand the scope of application to better meet the needs of various industries, and continue to play an important role in modern life.
With the increasingly serious global environmental problems, the importance of environmental awareness in people's minds cannot be ignored. As a material widely used by contemporary people, the massive use of plastic products has also brought many negative impacts to the environment. However, as a leader in the field of plastic raw material recycling, Ningbo Chaohe Plastic Co., Ltd. is committed to contributing to an environmentally friendly circular economy by recycling and reusing plastic raw materials.
As a professional plastics recycling company, Ningbo Chaohe Plastic Co., Ltd. is equipped with advanced recycling equipment and technology to efficiently recycle all types of plastics. Whether it is waste plastic products, plastic bottles or plastic pipes, we can provide comprehensive recycling solutions and ensure that the recycled plastic raw materials are of high purity and good quality.
During the recycling process, Ningbo Chaohe Plastic Co., Ltd. focuses on the principles of environmental protection and sustainable development. Through strict quality control and scientific processing, we are able to minimize the pollution of plastic waste to the environment. At the same time, we also carry out fine classification and sorting according to different types of recycled plastic raw materials to ensure that they can be reused to the maximum extent.
As a high-performance material, plastics have a wide range of applications in various industries. However, with the increasing scarcity of resources and environmental problems, recycling plastic raw materials has become an urgent problem. Through a stable supply chain and comprehensive cooperation mechanism, Ningbo Chaohe Plastic Co., Ltd. is able to provide customers with stable and reliable recycled raw materials, effectively solving the problem of plastic raw material supply.
In addition, Ningbo Chaoho Plastic Co., Ltd. provides personalized solutions, tailoring the most suitable recycling solutions according to customers' needs and industry characteristics. We are able to help our customers improve resource utilization, reduce environmental pollution and create economic value through plastic recycling.
In the future, Ningbo Chaohe Plastic Co., Ltd. will continue to be committed to innovation and development, and constantly improve the recycling technology and service level, contributing to the construction of a beautiful China and sustainable development. Let's work together to build a green recycling economy and guard our common home!
As a professional plastic raw material sourcing solution provider, Ningbo Chaohe Plastic Co., Ltd. provides you with high quality and reliable plastic raw material supply services. We are committed to meeting the needs of our customers by providing you with a range of high quality plastic raw materials to help you achieve success in your business development.
With many years of experience and a team of professionals, Ningbo Chaohe Plastic Co., Ltd. understands the importance of plastic raw materials in various industries. Whether you are a plastics processor, a manufacturing company or any other industry, choosing the right plastic raw materials is crucial when it comes to product quality and cost control. We work with many well-known brands at home and abroad to ensure that the plastic raw materials we provide are of excellent quality, stable and reliable.
Our products cover a wide range of plastic raw material types, including but not limited to PVC, PP, PE, ABS, PC, etc.. We have established stable relationships with our suppliers, and through professional testing and quality control measures, we ensure that all raw materials meet national standards and industry requirements. Whether you need plastic raw materials with characteristics such as transparency, flexibility, high temperature resistance, cold resistance, corrosion resistance, etc., we can provide you with a full range of choices.
At Ningbo Chaohe Plastic Co., Ltd, we focus on the individual needs of our customers. Our professional team will work closely with you to help you select the most suitable plastic raw materials for your products. We offer efficient sourcing solutions to help you realize advantages in time and cost. We also provide timely delivery services to ensure your production schedule runs smoothly.
In order to provide better service to our customers, we also provide plastic raw material quality traceability service. We ensure the quality traceability of every batch of plastic raw materials we supply through our perfect quality control system. This not only ensures the quality of your products, but also improves the competitiveness of your business.
As your reliable plastic raw material supply partner, Ningbo Chaohe Plastic Co., Ltd. is committed to providing you with high-quality products and professional services. Whether you are a large enterprise or a small enterprise, we can provide you with customized plastic raw material procurement solutions. We look forward to cooperating with you and creating brilliant future together!
PET resin, polyethylene terephthalate, is a linear thermoplastic polymer produced by polycondensation of terephthalic acid and ethylene glycol. It has excellent physical and mechanical properties, such as high strength, good rigidity, impact resistance is outstanding in thermoplastics, but also has good chemical resistance, in addition to a few strong solvents, most of the acids, alkalis, salts have good resistance. In addition, PET resin has good high temperature resistance, long-term use temperature can reach 120 ℃ or so, and excellent electrical insulation properties, light transmission is also more outstanding, these characteristics make it in many areas are widely used.
In the field of packaging, PET resin is one of the main materials for making plastic bottles. Many of the common mineral water bottles, beverage bottles, edible oil bottles, etc. in our daily life are made of PET resin. This is because PET bottles are characterized by light weight, high transparency and good sealing, which can clearly display the products inside the bottles, and at the same time effectively prevent the contents from leaking and deteriorating. Moreover, PET bottles are strong enough to withstand a certain amount of pressure during transportation and storage, and have a high recycling rate, which is in line with the trend of environmental protection. In addition to plastic bottles, PET resin can also be used to make food packaging film, this film has a good barrier, can effectively block oxygen, water vapor, etc., to extend the shelf life of food, commonly used in meat, pastries and other food packaging.
In the textile industry, PET resin is the core raw material for the production of polyester fiber. Polyester fiber has the advantages of high strength, good elasticity, wear-resistant, light-resistant, corrosion-resistant, etc. It is widely used in clothing fabrics, home textile products, industrial fabrics and other fields. Clothing made of polyester fiber is stiff and wrinkle-resistant, not easy to deform, and easy to dry after washing; home textile, polyester sheets, curtains, etc., strong durability, bright colors; industry, polyester fiber can be used to make filter cloth, conveyor belts, etc., to give full play to its high-strength and wear-resistant properties.
In the field of engineering plastics, reinforced PET resin (such as glass fiber reinforced PET) is widely used. By adding glass fibers and other reinforcing materials, PET resin mechanical properties have been significantly improved, strength, rigidity and heat resistance have been greatly improved, can be used for the manufacture of automotive parts, electronic and electrical enclosures and so on. In the automotive industry, reinforced PET can be used for the production of door handles, dashboard components, engine peripheral parts, etc., not only light weight, can realize the car lightweight, but also to meet the use of the mechanical properties of the process requirements; in the field of electronic and electrical appliances, reinforced PET can be used for the production of printers, photocopiers, and other equipment such as shells and internal structural parts, with good dimensional stability and temperature resistance.
In the film field, in addition to food packaging film, PET resin can also be used to make electrical insulation film. This film has excellent electrical insulation properties and high temperature resistance, can be used for electrical equipment such as motors, transformers and other insulating materials, to ensure the safe and stable operation of equipment. In addition, PET film can also be made after stretching treatment stretch PET film, its strength is higher, better toughness, can be used for the production of magnetic tapes, optical discs, such as the base film.
With the continuous development of technology, PET resin applications are still expanding. For example, in the medical field, some special modified PET materials can be used to make medical equipment components, with good biocompatibility; in the construction field, PET resin can be used to make sound insulation materials, thermal insulation materials, etc., to take advantage of its certain barrier properties and mechanical properties. At the same time, PET resin recycling technology is also advancing, after the recovery of PET can be processed through chemical or physical methods, re-used in the production of plastic bottles, fibers and other products, further promoting the recycling of resources.
If you have PET material purchasing needs, please contact us, Ningbo Chaohe Plastic will be happy to provide you with high quality materials and first-class customer service. We are looking forward to cooperating with you and creating a bright future together!
Styrene-butadiene-styrene block copolymer (SBS) is a thermoplastic elastomer made by block copolymerization of styrene and butadiene, with a unique two-phase structure -- polystyrene hard and polybutadiene soft. This structure makes SBS both the elasticity of rubber and the thermoplasticity of plastic, showing the high elasticity of rubber at room temperature, and can melt and flow like plastic when heated to a certain temperature, and can be molded by injection molding, extrusion and other plastics processing methods, the processing process is simple and efficient, no need for vulcanization, which greatly shortens the production cycle.
SBS has excellent elasticity, low-temperature resistance, weatherability and electrical insulation, as well as good compatibility and processability, and can be blended with a wide range of polymers, fillers and additives to improve material properties. Its specific applications are widely distributed in many fields:
In the shoe industry, SBS is one of the important raw materials for shoe soles. The soles made of SBS have good elasticity, abrasion resistance and flex resistance, which are comfortable to wear and durable, comparable to natural rubber, and at the same time, the cost is relatively low. Whether it is sports shoes, casual shoes or leather shoes, SBS is often used as the main component or modifier, which can meet the requirements of different styles of shoes on the performance of the sole.
In the field of asphalt modification, SBS plays a key role. SBS added to the road asphalt, can significantly improve the high temperature stability of asphalt, low temperature crack resistance and anti-aging properties, so that the modified asphalt pavement has better durability and rutting resistance, can adapt to different climatic conditions and traffic load requirements. At present, SBS modified asphalt has been widely used in highways, urban trunk roads and other important transportation road paving, effectively extending the service life of the road, reducing maintenance costs.
In the adhesive industry, SBS is the main base material for hot melt adhesives, pressure sensitive adhesives, etc. SBS-based adhesives have good initial adhesion, high bonding strength, water and oil resistance, etc., and fast curing speed, convenient construction. In the packaging field, it can be used for carton sealing, labeling, etc.; in the construction field, it can be used for flooring, wallpaper, etc.; in the automotive industry, it can be used for the adhesion of interior parts, etc., and the application scenarios are very rich.
In plastic modification, SBS is often used as a toughening agent to improve the impact properties of brittle plastics such as polypropylene (PP) and polystyrene (PS). For example, adding an appropriate amount of SBS to PP can significantly improve the low-temperature impact strength of PP, so that it is not easy to be brittle in the low-temperature environment, expanding the scope of application of PP in cold regions and low-temperature conditions; adding SBS to PS can effectively improve the toughness of PS, making it more suitable for the production of products need to withstand a certain degree of impact.
In addition, SBS can also be used to make wire and cable insulation and sheath materials, because of its good electrical insulation, weather resistance and flexibility, can protect wires and cables from the external environment, to ensure the stable transmission of electricity and signals. In the toy industry, SBS can be used to make soft toy parts, such as toy car tires, doll limbs, etc., its elasticity and high safety, not easy to cause harm to children.
With the continuous development of technology, the performance of SBS is further optimized. Through compounding with other materials or chemical modification, SBS-based materials with special properties can be developed, expanding its application in more high-end fields, such as medical materials, high-end sealing materials, etc., which will continue to provide support for the development of various industries.
Choosing Ningbo Chaohe Plastic Co., Ltd. as SBS raw material supplier, you will enjoy high quality products and excellent service.
Polypropylene (PP) is a thermoplastic resin made from the polymerization of propylene monomers. It is lightweight, non-toxic, chemically stable, heat-resistant, and easy to process, and is widely used in many fields. Depending on the molecular structure, polypropylene is mainly divided into homopolymerized polypropylene (PPH), block copolymerized polypropylene (PPB) and random copolymerized polypropylene (PPR).
Homopolymerized polypropylene (PPH) contains only propylene monomer units in its molecular chain and has a high degree of crystallinity, so it has a high degree of strength, hardness and heat resistance, but its impact resistance is relatively poor, especially at low temperatures where it is prone to embrittlement. In the field of daily necessities, PPH is often used in the production of plastic tableware, such as bowls, plates, spoons, etc., because of its high temperature resistance, can be used in microwave ovens, and non-toxic and tasteless, in line with the food hygiene standards; but also to make plastic pots, buckets and other containers, with lightweight, durable characteristics. In the industrial field, PPH can be used to manufacture various industrial fittings, such as gears, valves, etc., utilizing its good abrasion resistance and chemical stability.
Block copolymerized polypropylene (PPB) is a block copolymer of propylene and ethylene formed by adding a small amount of ethylene monomer during the polymerization of propylene, which has significantly improved impact resistance, especially low-temperature impact performance, but heat resistance and rigidity are slightly lower than that of homopolymerized polypropylene. In the automotive industry, PPB is commonly used in the production of automotive bumpers, instrument panels and other parts, can withstand a certain impact to protect the vehicle and passenger safety; can also be used to manufacture automotive interior parts, such as door panels, seat shells, etc., with a certain degree of strength and toughness. In the field of packaging, PPB can be made into heavy packaging film for packaging heavy goods, such as fertilizer, grain, etc., with good tear resistance and puncture resistance.
Random copolymer polypropylene (PPR) is a copolymer of propylene and ethylene in the polymerization of random arrangement, high transparency, impact resistance and low temperature resistance performance is better, while having excellent chemical resistance and aging resistance. In the field of construction, PPR pipeline is one of its most important applications, because of its good heat resistance and pressure resistance, and is not easy to scale, is widely used in indoor hot and cold water piping systems, heating systems, etc.; compared with the traditional metal pipeline, PPR pipeline is light in weight, easy to install, and greatly reduces the construction cost. In the field of medical devices, PPR can be used to make syringes, infusion sets and other disposable medical devices, with good biocompatibility and safety.
In addition to the common types mentioned above, there is also reinforced polypropylene (FRPP), which is made by adding glass fibers and other reinforcing materials to polypropylene, with higher strength, rigidity, and heat resistance, while retaining the chemical resistance of polypropylene.FRPP has a wide range of applications in the chemical industry, and is used to make chemical tanks, pipelines, and other equipment, which can withstand corrosion of various chemical media and ensure the safe conduct of chemical production. In the automotive industry, FRPP can be used to manufacture engine peripheral parts, such as intake manifolds, taking advantage of its lightweight and high-temperature resistant properties.
Polypropylene also has good recyclability. Recycled polypropylene can be reprocessed to make recycled plastic products, such as plastic garbage cans and recycled plastic sheets, which is in line with the concept of environmentally sustainable development. With the continuous progress of technology, the performance of polypropylene is still being optimized, and its application fields are also expanding, playing an increasingly important role in people's production and life.
If you are in need of polypropylene raw materials, you may choose to cooperate with Ningbo Chaohe Plastic Co. We will be happy to provide you with high quality materials and first-class customer service. We are looking forward to cooperating with you and creating a bright future together!
Polyethylene (PE) is a thermoplastic resin made by polymerization of ethylene monomer, which is mostly solid at room temperature, but can be presented as molten liquid and molded under specific processing conditions. It has excellent chemical stability, low temperature resistance, electrical insulation and processing performance, and relatively low price, is currently the world's largest production, one of the most widely used plastic varieties.
According to the different density and molecular structure, polyethylene can be mainly divided into low density polyethylene (LDPE), high density polyethylene (HDPE) and linear low density polyethylene (LLDPE).
Low-density polyethylene (LDPE) has a soft texture, high transparency, good flexibility and elongation, and strong impact resistance. In the field of packaging, LDPE is an important material for the production of plastic film, such as food packaging film, agricultural film, etc., which is thin and light and has a certain degree of permeability, can well meet the packaging needs; can also be used for the production of plastic bags, because of its good flexibility, easy to carry and use. In daily necessities, LDPE can be made into hoses, toys, such as children's water toys, safe and not easy to damage.
High-density polyethylene (HDPE) has higher density, higher hardness and strength, excellent abrasion and chemical resistance, and good moisture resistance. In the packaging industry, HDPE is often used to make plastic bottles, such as milk bottles, detergent bottles, etc., can withstand a certain degree of pressure, and good sealing, can effectively protect the contents; can also make plastic crates for the transportation and storage of goods, because of its high strength, it can be reused many times. In the construction field, HDPE pipes are widely used in water supply, drainage, gas transportation and other systems due to their strong corrosion resistance and long service life. In addition, HDPE can also be used to make safety helmets, fishing nets and other products.
Linear Low Density Polyethylene (LLDPE) combines the flexibility of LDPE with the strength of HDPE to provide better resistance to puncture, tearing and stress cracking. In agriculture, LLDPE can be used to make mulch film, which is highly puncture-resistant and can effectively resist damage from stones and other debris in the soil, while retaining moisture and helping crops grow. In packaging, LLDPE is often blended with LDPE to make films for packaging heavy goods, such as pallet wrap, which can tightly wrap the goods and prevent them from falling apart during transportation. In addition, LLDPE can also be used to make garbage bags, corrugated pipes and other products.
In addition to the common types mentioned above, there is also ultra-high molecular weight polyethylene (UHMWPE), which has extremely high molecular weight and therefore possesses excellent abrasion resistance, impact resistance and self-lubrication, and can be used to make bearings, guide rails, artificial joints, and other high-end products, which play an important role in the fields of machinery and medical treatment.
Overall, polyethylene has an irreplaceable position in many fields such as packaging, agriculture, construction, daily necessities, medical care and so on, thanks to its diverse characteristics, which greatly facilitates people's productive life.
Choosing Ningbo Chaohe Plastic Co., Ltd as a supplier of polyethylene raw materials, you will enjoy high quality products and excellent service.
The medical and healthcare sector is one of the most important markets for plastics applications, and demand is showing continuous growth. With the aging of the population, the continuous progress of medical technology and people's concern for health, the demand for medical equipment, medical supplies, pharmaceutical packaging and other plastic products is also increasing.
In medical devices, plastics are widely used in the manufacture of syringes, infusion sets, catheters, dialyzers, medical device housings, and so on. These plastic products require a high degree of biocompatibility, chemical stability and sterility. For example, polyvinyl chloride (PVC) is commonly used in the manufacture of infusion tubes and blood bags due to its good flexibility and processing performance; polypropylene (PP) has high strength and chemical resistance, and is commonly used in the manufacture of syringes and medical device housings.
In the field of pharmaceutical packaging, plastic bottles, plastic films and plastic blisters are widely used. Plastic packaging has the advantages of light weight, low cost, moisture-proof, anti-oxidation, etc., which can effectively protect the quality and stability of drugs. Moreover, with the development of intelligent drug packaging, plastic packaging with anti-counterfeiting, traceability, monitoring the shelf life of drugs and other functions has gradually become a hot spot of market demand.
In addition, in the field of medical beauty, rehabilitation aids and other areas, plastic materials also play an important role. For example, plastics used in the manufacture of prosthetics, orthotics, cosmetic filling materials, etc., need to have good biocompatibility, flexibility and mechanical properties.
By choosing Ningbo Chaohe Plastic Co., Ltd as your raw material supplier, you will enjoy high quality products and excellent service. He will provide you with satisfactory solutions to help you stand out in the market. Contact us now to learn more about Ningbo Chaohe Plastic Co!