特种工程塑料聚苯硫醚的注塑成型技术

Injection Technology of Special Engineering Plastics Polyphenylene Sulfide

聚苯硫醚(PPS)具有高强度、很高的耐热性、电性能优良等,现被广泛应用于各个领域。尤其是成型温度很高,在熔体温度下PPS会产生部分交联,但温度过高滞留时间长则会产生交联结构严重,故注塑成型技术难度大。本文主要阐述PPS的性能,注塑成型工艺,成型PPS制品时常见缺陷与解决方法。

Polyphenylene sulfide （PPS） is a special engineering plastic characterized by a unique combination of high strength, flame resistant, excellent electrical properties, and so on. Recently, it is being widely used in various fields. PPS has very high processing temperature, at which the partial cross-linking will happen. The overhigh temperature and overlong residence time distribution will result in so serious cross-linking structure that the injection moulding will become difficult. This paper focuses on the performance of PPS, injection molding process, and the common defects as well as the corresponding solutions for forming PPS products.