前言以新工程塑料聚苯硫醚代替布质酚醛压板的东风型内燃机车冷却水泵密封环(动环),在我段从装车试验到全面推广使用,已经整整四年了。关于聚苯硫醚密封环,过去也有所报道。现在有些单位亦开始试用,有些则准备试用。在这里,想用一些具体数字来介绍一下它的使用情况,并简单介绍一下聚苯硫醚的化学 Preface The new engineering plastic polyphenylene sulfide instead of cloth phenolic pressure plate of the Dongfeng diesel locomotive cooling water pump seal ring (ring), in my section from the loading test to promote the use of a full, has been a full four years. Polyphenylene sulfide seal ring has also been reported in the past. Some units are now starting to try out, while others are ready to try it out. Here, want to use some specific figures to introduce its use, and briefly introduce the chemical polyphenylene sulfide