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What plastic is HIPS?

Date of release:2018-11-12 Author: Click:


HIPS industry.jpg


HIPS is high impact polystyrene.

In order to meet the requirements of tough materials, rubber-modified polystyrene (high-impact polystyrene or HIPS) was developed in 1950. By adding rubber to a polystyrene substrate, various grades of high impact polystyrene having different properties can be produced. In recent years, various special grades of HIPS have been developed, including flame retardant grade, stress cracking resistance grade, high gloss grade, extremely high impact strength grade, glass fiber reinforced grade and low residual volatile fraction, etc., which are used in many applications. The field has been able to compete with expensive engineering resins.

The outstanding properties of impact polystyrene are easy processing, excellent dimensional stability, high impact strength and high rigidity. For HIPS it is only in heat resistance. There are certain limits in terms of oxygen permeability, ultraviolet light stability, and oil resistance. Chemical and performance impact polystyrene is produced by dissolving a polydiene rubber in a styrene monomer prior to polymerization.

Although HIPS can be produced by suspension polymerization, the current industrial production of HIPS is mainly bulk polymerization. In the bulk polymerization process, the styrene monomer/rubber/additive mixture is passed through a series of reactors with a conversion of 70 to 90%.


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Key word:HIPSplastic,HIPSfactory,HIPSindustry

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