P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and preparation method thereof

Abstract

The invention discloses a P84 fiber and PPS (Polyphenylene Sulfide) fiber composite high-temperature-resisting spunlaced felt and a preparation method thereof. The P84 fiber and PPS fiber composite high-temperature-resisting spunlaced felt comprises a base cloth layer in the middle, wherein the upper surface of the base cloth layer is provided with an ultrafine fiber dust accepting surface layer, and a ventilation and air purification surface layer is arranged on the lower surface of the base cloth layer; the base cloth layer, the ultrafine fiber dust accepting surface layer and the ventilation and air purification surface layer are needled to form the felt; the surface of the felt is provided with a PTFE (Polytetrafluoroethylene) emulsion impregnation layer. The ultrafine fiber dust accepting surface layer is composed of P84 fibers with a three-leaf-shaped structure and a PPS fiber spreading net with the size of 1D; an ultrahigh-pressure multi-path spunlacing process is used for replacing a traditional needling process; a spunlacing flexible entangling laminating technology and a splitting process are utilized, so that the P84 fibers are split and cracked into fibers with relatively fine fiber diameters, and irregular pores are formed; the distribution of pore diameters is more uniform, tight and intensive than a needed filtering material; the felt has extremely high filtering efficiency and the emission concentration is lower than 10mg / m<3>.

Description

technical field [0001] The invention relates to the field of waste gas treatment, in particular to a composite high temperature resistant spunlace felt made of P84 fiber and PPS fiber and a preparation method thereof. Background technique [0002] PPS resin has only been used in the fiber field in recent years. Because of its good temperature resistance, good elasticity, excellent anti-corrosion performance, and flame retardancy, it is favored by the field of flue gas and dust removal. 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. Flue gas dust removal is an important part of pollution control, and bag dust removal is an important method for flue gas control. The treatment of flue gas requires new fibers with high temperature resistance and corrosion resistance, and PPS fibers can basically meet the above requirements. [0003] However, in the ...

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Problems solved by technology

[0003] However, in the field of gas-solid separation, especially the PPS fiber needle felt that is widely used in the bag filter of thermal power plants, with the improvement of national environmental protection emission standards, the emission concentration of pure PPS fiber needle felt does not meet the standard, and the oxidation resistance Average performance, general use effect and lifespan

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