Sizing agent for surface processing of glass fiber filter cloth and preparation method thereof

Abstract

The invention relates to a soaking agent for the surface processing of glass fiber filter cloth and a preparation method thereof, which belongs to the surface processing of glass fibers. The soaking agent comprises a soaking agent main body component A and a hydrophilic coupling agent dispersed liquid component B in the weight part proportion as follows: A:B=100:3 to 4, and the soaking agent mainbody component A comprises the following raw material components in percentage by weight: 4 to 8 percent of polytetrafluoroethylene emulsion with the solid content of 60 percent, 8 to 12 percent of polyacrylate emulsion with the solid content of 30 percent, 3 to 5 percent of polyvinyl alcohol aqueous solution with the solid content of 8 percent and 2 to 4 percent of phenylmethylsilicone fluid emulsion with the solid content of 30 percent; the hydrophilic coupling agent dispersed liquid component B comprises the following raw material components in percentage by weight: 7 to 10 percent of silane coupling agent A-151 and 7 to 10 percent of alcohol and does not contain Tween-80. The invention provides the soaking agent with reasonable formula and good storage stability and the preparation method thereof with simple process and lower cost. The produced glass fiber filter cloth reaches the technical index specified in a national standard GB / T18371-2002.

Description

technical field [0001] The invention relates to a sizing agent for post-treatment of glass fiber filter cloth and a preparation method thereof, which belongs to the surface treatment of glass fiber, in particular to the surface treatment of glass fiber fabric. Background technique [0002] Glass fiber filter cloth has the advantages of high strength, stable size, high temperature resistance, good corrosion resistance and high filtration efficiency. service life. The performance of the sizing agent for the surface treatment of glass fiber filter cloth is very important to improve the performance of the filter cloth such as folding resistance, wear resistance and water repellency, and to prolong the service life. After the filter cloth is impregnated with the impregnating agent, it is prebaked and baked to dry the impregnating solution and make it form a film on the surface of the fiber to protect the fiber from chemical corrosion and improve its folding resistance and durabi...

AI Technical Summary

Problems solved by technology

[0004] 1. The formula is unreasonable and the storage stability is not good, resulting in phase separation during use, affecting the quality of dipping, or even scrapping, resulting in waste

[0005] 2. The coupling agent dispersion in the sizing component, the composition of the formula is unreasonable, and the amount of coupling agent is too large, resulting in unnecessary waste, unstable quality, easy to separate, and affecting the use effect

[0006] 3. The preparation process of the coupling agent dispersion in the sizing component is complex

[0007] The above problems lead to glass fiber filter cloth products with low glue content and poor hydrophobicity

Poor air permeability and low strength, it is difficult to meet the technical requirements stipulated in the current national standards, and the production cost is high

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