High impact polystyrene, also known as HIPS, is a thermoplastic material made of elastomer modified polystyrene. The two-phase system consisting of rubber phase and continuous polystyrene phase has developed into an important polymer commodity in the world. This general-purpose product has a wide range of impact properties and processing properties, making it widely used, such as in automobile, apparatus, electric products, furniture, household appliances, telecommunications, electronics, computers, disposable goods, medicine, packaging and entertainment markets.

Polystyrene is one of the oldest industrial thermoplastic polymers, which has a wide range of applications. This bright, pure amorphous plastic has the advantages of easy processing, rigidity, dimensional stability and transparency, but its low impact strength limits its application.High impact polystyrene is a small amount of polybutadiene connected to the polystyrene matrix.