July 10, 2025
Plastics Specialist
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.
