Heat-resistant filter paper and preparation method thereof

Abstract

The invention relates to heat-resistant filter paper and a preparation method thereof. The heat-resistant filter paper disclosed by the invention is composed by the following raw materials by weight: 52-60 parts of hardwood pulp, 42-52 parts of calcium carbonate powder, 10-18 parts of carboxymethyl cellulose, 12-13 parts of polyester fiber, 3-4 parts of trimethylolpropane, 1-2 parts of hydroxyl silicone oil, 2-3 parts of nanometer bentonite, 1-2 parts of celestite powder, 1-2 parts of sodium persulfate, 1-2 parts of antimonous oxide, 1-2 parts of lauryl dimethyl amine oxide, 2-4 parts of sodium dodecyl sulfate, 2-3 parts of triethylene glycol, 0.6-1 part of gamma-aminopropyl triethoxysilane, 3-4 parts of a wet strength agent, 2-4 parts of rosin, 4-5 parts of aluminum hydroxide powder, 3-4 parts of glycerin, 5-7 parts of absolute ethyl alcohol, 0.1-0.3 part of peroxide tert-butyl acetate, 0.2-0.4 part of dodecyl alkylphenol polyoxyethylene ether and a proper amount of water. By adding a great amount of calcium carbonate powder as a raw material, the heat resistance of the filter paper is greatly improved.

Description

technical field [0001] The invention mainly relates to a filter paper, in particular to a heat-resistant filter paper and a preparation method thereof. Background technique [0002] The engine has three types of filters: air, oil, and fuel, generally referred to as "three filters". They are respectively responsible for the filtration of the medium in the engine intake system, lubrication system and combustion system. Due to the large pore size, poor uniformity, and low filtration efficiency of traditionally produced filter paper, it cannot effectively filter out impurities harmful to the engine, causing early engine wear and tear. The impregnated emulsion for filter paper has now changed from alcohol-soluble to Water-soluble development, commonly used water-soluble impregnated emulsions such as polyvinyl acetate copolymer emulsion, styrene-acrylic emulsion and pure acrylic emulsion, among which styrene-acrylic emulsion is the most commonly used, but the filter paper fil...

AI Technical Summary

Problems solved by technology

Due to the large pore size, poor uniformity, and low filtration efficiency of traditionally produced filter paper, it cannot effectively filter out impurities harmful to the engine, causing early engine wear and tear. The impregnated emulsion for filter paper has now changed from alcohol-soluble to Water-soluble development, commonly used water-soluble impregnated emulsions such as polyvinyl acetate copolymer emulsion, styrene-acrylic emulsion and pure acrylic emulsion, among which styrene-acrylic emulsion is the most commonly used, but the filter paper film after impregnated with styrene-acrylic emulsion is relatively brittle , the adhesion to the surface of the fiber in the filter paper is not good, and the amount of functional monomer is large, the cost is high, especially the stiffness is not high and it cannot be degraded in the environment