Discussion of two quantitative analysis methods for polyphenylene sulfide/polytetrafluoroethylene filter media
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 polytetrafluoroeth-ylene 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.
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