Polystyrene (PS) , is a synthetic resin made by homopolymerization of styrene monomers or with other comonomers. In the molecular structure of homopolymer, the main chain is a saturated carbon chain with benzene rings as the lateral group. The resin is a non-crystalline linear polymer, which is colorless, transparent, hard, easy to be dyed and resistant to chemical solutions. It has excellent electrical insulation property and low hygroscopicity. It is easy to mold and has good fluidity. It can be made into a variety of products through injection molding,extrusion,compression molding, vacuum molding and foaming. The products have stable dimensions and low shrinkage during molding and the molding term is short.
HIPS can be used to produce the shells of electrical household appliances,toys,automobile parts,daily necessities,etc.