High impact polystyrene (HIPS), do you understand? High impact polystyrene is a kind of modified polystyrene. Because PS is brittle, it needs to be modified with high elastic polymer to improve toughness.

CIS polybutadiene rubber is usually grafted onto the polystyrene chain to improve the toughness of the material. The rubber content is very low, generally about 3% ~ 5%; some are grafted with ethylene propylene rubber, which can improve the outdoor aging resistance at the same time. During the polymerization of styrene, the free radical of styrene grafts onto rubber.

Hips is mainly produced by injection molding. The product can be molded by injecting molten resin into cold mold under high pressure. It is suitable for manufacturing complex components with low production cost. Hips is generally lower than ABS melt viscosity, especially suitable for injection molding, molding temperature is 180 ~ 225 ° C.

Hips is mainly the same as manufacturing the shell and electrical components of electrical equipment. It is commonly used in the shell of household appliances, such as VCR and CRT, especially in the shell material of TV. As most household appliances require flame retardant, the research on hips flame retardant has been very active.

Hips can also be used as packaging and disposable materials, especially food packaging materials and tableware. The main applications include daily packaging containers, separate packaging cups for vending machines, various covers, plates, bowls and so on. Disposable products such as dishes, bottle caps, safety razors, penholder, etc.

In recent years, special products have become the focus of hips product development. The newly developed hips products can compete with engineering resin in some application fields, some of which are much higher than the existing ones in quality. Instrumentation and consumer electrical appliances are one of the growing markets for hips products, including small instruments, refrigerator inner wall and internal parts, TV shell, air conditioning parts, commercial machines and audio and video cassette. Special grade hips resin has replaced expensive engineering plastics in many fields. A kind of hips with ultra-high impact strength and high temperature resistance can even be used as automotive interior parts.