Filter paper with high filtering efficiency, and preparation method thereof

Abstract

The invention relates to filter paper with high filtering efficiency, and a preparation method thereof. The filter paper with high filtering efficiency disclosed by the invention is composed of the following raw materials by weight: 50-60 parts of jute pulp, 45-50 parts of wood pulp, 20-25 parts of polystyrene fibers, 3-5 parts of sodium carboxymethyl cellulose, 3-4 parts of a nano carbon powder, 1-2 parts of feldspar powder, 1-2 parts of alum powder, 1-2 parts of 4,4'-diphenylmethane diisocyanate, 2-3 parts of diethylene triamine, 2-3 parts of polyamide wax micropowder, 0.8-1 part of bis(P,P-bis-ethylhexyl diphosphato)ethanediolato titanate, 0.4-0.6 part of an antioxidant DSTP, 0.5-0.6 part of sodium persulfate, 2-3 parts of ethylene glycol, 6-7 parts of rosin, 15-20 parts of absolute ethyl alcohol, 3-4 parts of nano diatomite, 0.8-1 part of polyoxyethylene octyphenyl ether, 0.3-0.4 part of Gamma-(2,3-epoxypropoxy)propyl trimethoxysilane and a proper amount of water. The filter paper produced by the invention has high filtration precision, high filtration efficiency, small air resistance and strong pollutant-holding capacity, and is environment-friendly.

Description

technical field [0001] The invention mainly relates to a filter paper, in particular to a filter paper with high filtration efficiency 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...

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