Factory Price Black Recycle Plastic Granule High Impact Polystyrene HIPS

Low cis polybutadiene (LCBR) is obtained by polymerization of butadiene initiated by alkali metal, alkyl lithium or other anionic polymerization initiators. The cis structure content of polybutadiene is usually about 40%. The trans structure content of LCBR is generally about 50%, and the 1,2 structure content is generally about 10%. The three structures are randomly distributed. LCBR has narrow molecular weight distribution, Poisson distribution, low degree of branching, excellent cold resistance and low temperature flexibility, good color, transparency, and even mass. LCBR is the preferred rubber for HIPS impact resistance modification.

Impact resistant polystyrene is an impact resistant polystyrene product produced by adding polybutadiene rubber particles to polystyrene. The polystyrene product will add micron sized rubber particles and connect the polystyrene and rubber particles together by branching. When impacted, the stress at the tip of crack propagation will be released by relatively soft rubber particles. Therefore, the crack propagation is hindered and the impact resistance is improved.