聚苯硫醚纤维/聚四氟乙烯纤维滤料的定量分析方法探讨

Discussion of two quantitative analysis methods for polyphenylene sulfide/polytetrafluoroethylene filter media

聚苯硫醚纤维和聚四氟乙烯纤维都具有耐热性和耐腐蚀性,是耐高温滤料最常用的两种纤维材料,聚苯硫醚纤维是由聚苯硫醚经熔融纺丝制得,聚四氟乙烯纤维是由聚四氟乙烯为原料,经纺丝或制成薄膜后切割或原纤化而制得的纤维。由于这两种纤维化学性能稳定,现行有效标准只有加热浓硫酸方法可以准确定量,但该方法操作有一定的难度和危险性。本着环保和节约资源的原则,本文探讨采用马弗炉热重法对这两种纤维进行定量分析,并将该方法与热浓硫酸法进行比较。试验表明,马弗炉热重法可以作为定量检测聚苯硫醚纤维/聚四氟乙烯纤维滤料的参考方法之一。

Polyphenylene sulfide fiber and polytetrafluoroethylene fiber are the two most commonly used fibers of high-temperature resistant filter media,polyphenylene sulfide fiber is made of polyphenylene sulfide through melt spinning,and polytetrafluoroethylene fiber is made of polytetrafluoroethylene as raw material,which is cut or fibrillated after spinning or making a film.Both fibers are resistant to heat and corrosion,and due to their chemically stable properties,only the method of heating concentrated sulfuric acid can be accurately quantified.In line with the principle of environmental protection and resource conservation,this paper uses the muffle furnace thermogravimetric method to quantitatively analyze these two fibers,and compares the two quantitative analysis methods.The results show that the muffle furnace thermogravimetric method can be used as one of the reference methods for the quantitative detection of polyphenylene sulfide fiber/PTFE fiber filter media.