From the perspective of molecular structure, polystyrene is a long-chain polymer compound formed by opening the double bonds of styrene monomers and connecting with each other. Its chemical structure is relatively simple, the molecular chain is more regular, which makes it has some unique physical and chemical properties.
Polystyrene is generally a colorless and transparent material with good gloss. Its transparency can be comparable to that of glass, so it is also called "organic glass". Its density is low, about 1.04-1.09g/cm³, light weight, easy to process molding. At the same time, PS plastic has good electrical insulation and has a certain resistance to most chemicals, but it is not resistant to organic solvents, such as benzene and toluene.
According to different polymerization methods and structures, PS plastics can be divided into general purpose polystyrene (GPPS) and high impact polystyrene (HIPS). General-purpose polystyrene has high transparency and hardness, but the impact resistance is relatively weak; high impact polystyrene is added to the polystyrene rubber components, such as polybutadiene rubber, to improve its impact resistance, but its transparency will be reduced.
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