Styrenic Block Copolymers (TPS or TPE-s)Styrenic Block Copolymers, also known as TPS or TPE-S(thermoplastic elastomers), are thermoplastic elastomers composed of SBS or SEBS. Typically, the terms SBS or SEBS are used to refer to these compounds, even though they are actually the raw materials used in their production. SBS and SEBS Compounds exhibit both vulcanized rubbers and plastic-like characteristics, making them suitable for a wide range of applications. Furthermore, our TPS formulations are fully recyclable, making them environmentally friendly, and they comply with RoHS regulations. By using the labels SBS or SEBS, we can gain a general understanding of the compound's performance and properties.
There are three main types of SBCs:Styrene-Butadiene-Styrene (SBS):Styrene-butadiene-styrene (SBS) is a type of synthetic rubber that belongs to the family of thermoplastic elastomers (TPEs). It is a copolymer consisting of three distinct monomers: styrene, butadiene, and styrene. The butadiene forms a chain, while the styrene units are interspersed along the chain, this structure imparts flexibility and elasticity to the material.
SBS block copolymers are known for their excellent abrasion resistance, good low-temperature flexibility, and high tensile strength. It's widely used in various applications, including Footwear, Adhesives, and Sealants, Automotive Parts, tires, gaskets, and belts, Medical and Consumer Products.
Styrene-Ethylene/Butylene-Styrene (SEBS):SEBS thermoplastic elastomer is created through a process called sequential block copolymerization. In this process, the three monomers (styrene, ethylene, and butylene) are polymerized in a specific order to create distinct blocks. The resulting structure consists of hard styrene segments linked with flexible ethylene/butylene segments. This structure gives SEBS its unique combination of properties, including elasticity, toughness, chemical resistance, and processability. Hydrogeation of the butadiene block in SEBS improves thermal stability, UV resistance, and chemical resistance compared to SBS.
SEBS is known for its excellent elasticity, high tensile strength, and resistance to environmental factors like UV radiation and oxidation. It's often used in applications where flexibility and durability are crucial. This makes it a popular choice in various industries, including automotive, consumer goods, medical devices, and construction. SEBS copolymers find applications in automotive parts, gaskets, seals, window and door seals, expansion joint fillers, medical devices, and Wire and Cable Insulation.
Styrene-Isoprene-Styrene (SIS):Styrene-isoprene-styrene (SIS) is a type of thermoplastic elastomer (TPE) commonly used in various applications due to its excellent combination of flexibility, resilience, and adhesive properties. SIS copolymers have a midblock of polyisoprene (another rubbery material) surrounded by blocks of polystyrene. They exhibit similar properties to SBS copolymers but are often softer and more elastic.
SIS is known for its excellent combination of flexibility, resilience, and adhesive properties. SIS copolymers are commonly used in pressure-sensitive adhesives, hot-melt adhesives, sealants, medical tubing, and toys. Furthermore, SIS can be blended with other polymers or additives to modify its properties. For example, blending SIS with polyethylene or polypropylene can enhance its toughness and processing characteristics.
The different types of TPE available
