Anti-static glass fiber composite echelon filter material and preparation method thereof

Abstract

The invention belongs to the technical field of filter media, and particularly relates to an anti-static glass fiber composite echelon filter material which comprises an anti-static glass fiber bulked yarn cloth layer, and uniform anti-static particles are contained in the anti-static glass fiber bulked yarn cloth layer; an anti-static fiber net layer is connected to the upper portion of the anti-static glass fiber bulked yarn cloth layer, a polytetrafluoroethylene impregnation layer is arranged on the side, away from the anti-static glass fiber bulked yarn cloth layer, of the anti-static fiber net layer, and a plasticizer is contained in the polytetrafluoroethylene impregnation layer. The upper part of the anti-static fiber net layer is connected with a polytetrafluoroethylene microporous film layer; the invention also provides a preparation method of the anti-static glass fiber composite echelon filter material. The filter material is low in operation cost, good in filtering effect, excellent in anti-static performance, good in high-temperature resistance and chemical resistance, high in durability, good in toughness and beneficial to application and popularization.

Description

technical field [0001] The invention belongs to the technical field of filter media, and in particular relates to an antistatic glass fiber composite ladder filter material and a preparation method thereof. Background technique [0002] Fiber materials for industrial fume filtration are generally required to have good temperature resistance, breaking strength, toughness, chemical resistance, and flame retardancy. A single fiber material is often unable to meet the requirements, because each fiber material has various advantages and disadvantages, such as the most representative Nomex fiber, polyphenylene sulfide fiber, polyimide fiber and teflon fiber , the Nomex fiber has good temperature resistance and chemical resistance, but in high moisture flue gas, its temperature resistance temperature will drop rapidly, that is, from 204 ° C to 150 ° C, which limits its application; polystyrene Sulfide fiber has good properties of high temperature resistance, acid resistance and al...

AI Technical Summary

Problems solved by technology

A single fiber material often cannot meet the requirements, because each fiber material has various advantages and disadvantages, such as the most representative Nomex fiber, polyphenylene sulfide fiber, polyimide fiber and polytetrafluoroethylene fiber Among them, the Nomex fiber has good temperature resistance and chemical resistance, but in high-moisture flue gas, its temperature resistance temperature will drop rapidly, that is, from 204 ° C to 150 ° C, which limits its application; polyphenylene Sulfide fiber has good properties of high temperature resistance, acid resistance and alkali corrosion resistance, and is suitable for dust removal of coal-fired flue gas, but its anti-oxidant ability is poor, and its functionality is limited; polyimide fiber has good adsorption performance and is commonly used The highest temperature is 260°C. Although it can make up for the above-mentioned deficiencies of the filter material, its hydrolytic stability is not ideal and the price is expensive; PTFE fiber has excellent high temperature resistance, chemical resistance and mechanical strength, but the price is relatively high , and felting is more difficult

[0003] Therefore, the effect of the filter material made from a single fiber is not good, which limits its application to a certain extent.

For example, in the prior art, the patent No. CN101927110B "anti-static glass fiber composite filter material and its preparation method" and the patent number CN201848161U "anti-static glass fiber composite filter material for coal-fired power plants" only use a single Although the overall performance of the PTFE fiber has been improved to a certain extent by processing each structure, it is still difficult to avoid the defects of difficult material manufacturing and expensive materials.

Images