Why say SBS thermoplastic elastomer-Iota

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Service > Why say SBS thermoplastic elastomer

Why say SBS thermoplastic elastomer

It is called a thermoplastic elastomer, which has a thermoplastic, so SBS usually as a mixed-type thermoplastic elastomer (thermoplastic elastomer blends) of the formulation components used to form a separate phase. SBS showed rubber-like elasticity at room temperature. Due to differences in solubility parameters of polystyrene and polybutadiene larger polymer provides mechanical strength, while the butadiene segments in high-elastic state, often can not meet without molding, temperature exceeds polystyrene glass After the temperature can flow. Conventional SBS polymer of styrene butadiene content is less than that of conventional SBS polymer melt viscosity is too high. Styrene end groups at room temperature in the glassy state, the middle is a low glass transition temperature of polybutadiene.
Toptpe answer say SBS very important feature of the molecular structure of a linear SBS triblock copolymer, styrene phase formed according to the physical cross-linking points, thus forming the dispersed particles are surrounded styrene polybutadiene in a continuous alkenyl phase - sea-island structure, the two segments are separated from each other over a wide temperature range, both ends of the glass transition temperature is higher polystyrene

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