Preparation method of polyphenylene sulfide non-woven fabric compound filter material

Abstract

The invention relates to a preparation method of a polyphenylene sulfide non-woven fabric compound filter material, particularly to a compound technology and after treatment technology of polyphenylene sulfide fiber reticular layer, and aims to overcome the defects of a product in the prior art to solve the problem that the conventional regular polyphenylene sulfide non-woven fabric compound filter material is low in filtering efficiency of tiny particulate matters. A polyphenylene sulfide fiber net formed through melt-blown and a polyphenylene sulfide short-staple net are compounded through the embedded array method to obtain the compound filter material, then, the temperature programming technology is adopted to perform heat setting on the compound filter material, and finally calendaring processing is performed on the surface of the compound filter material. Compared with the conventional polyphenylene sulfide needle-punched, spunlace or spunbond non-woven fabric filter material, the polyphenylene sulfide non-woven fabric compound filter material contains a firmly combined melt-blown superfine fiber layer, keeps excellent air penetrability, remarkably improves the filtration rate to tiny particulate matters, and is simple, convenient and energy-saving in preparation method.

Description

technical field [0001] The invention relates to a preparation method of polyphenylene sulfide non-woven composite filter material, in particular to the process and technology of polyphenylene sulfide fiber web layer compounding, heat setting and surface polishing. Background technique [0002] Polyphenylene Sulfide (PPS) fiber is a new type of high-performance synthetic fiber, which has excellent thermal stability, chemical corrosion resistance, flame retardancy and other physical and chemical properties, and can work at higher temperatures and extremely harsh conditions. Long-term use in the environment, mainly used for thermal filter materials. In recent years, with the rapid development of industry, industrial pollution has become increasingly serious, which has endangered the natural environment and people's health. At present, the smog weather in most cities continues to be active, the concentration of suspended particulate matter in the atmosphere remains high, and th...

AI Technical Summary

Problems solved by technology

However, the nonwoven fabric and its composite products of this invention are still based on the spunbond method, and the fibers are relatively thick, and the filtration accuracy of tiny particles such as PM2.5 is not enough. In addition, when the product is used at high temperature, the PPS fiber will undergo stress relaxation, resulting in Insufficient thermal stability of the product at high temperature

[0005] It can be seen that in the existing technology, there is no PPS non-woven fabric with high filter material strength, good high temperature thermal stability, high air permeability, smooth surface, easy to clean dust, and high filtration accuracy for PM2.5 fine particles. Therefore, in the face of the increasingly serious atmospheric haze problem caused by industrial development, it is urgent to develop a PPS non-woven composite filter with good performance, simple and energy-saving preparation method, and ultra-high filtration efficiency for PM2.5 tiny particles. material