Good purifying efficiency air filter paper suitable for humid environment, and making method thereof

Abstract

The invention discloses a good purifying efficiency air filter paper suitable for humid environment. The air filter paper is made by using the following raw materials, by weight, 45-48 parts of a wheat straw pulp, 51-54 parts of a reed pulp, 3-4 parts of kaolin, 1-2 parts of crushed corncob, 2-3 parts of ammonium biphosphate, 0.6-0.9 parts of lithium carbonate, 0.4-0.6 parts of carbomer, 2-3 parts of nanometer titanium dioxide, 1-2 parts of cerium oxide, 0.2-0.4 parts of carragheenan, 1-2 parts of casein, 4-6 parts of diacetone-acryloamide, 5-7 parts of vinyl acetate-acrylic emulsion, 0.5-0.6 parts of tributyl phosphate, 1-2 parts of an assistant and a proper amount of water. Titanium dioxide and cerium oxide added in the invention have a catalysis performance and can purify air; and the addition of the assistant increases the porosity of filter paper, makes adsorbed components uniformly dispersed and improves the filtering performance. The above impregnant has the advantages of large toughness and adhesiveness increase. The filter paper has the advantages of small filtering resistance, high efficiency, water and humidity resistance, and suitable for being used in the humid environment.

Description

Technical field [0001] The invention relates to the field of automobile filters, in particular to an air filter paper with good purification efficiency suitable for humid environments and a preparation method thereof. Background technique [0002] Automobile air filter paper is the core material for the manufacture of automobile engine air filters. Since the air filter is located in the intake system of the engine, and the engine usually generates heat when it is working, it is usually desirable that this air filter medium has a good The filtration performance and high filtration efficiency, as well as a certain degree of high temperature resistance, water resistance and burst resistance. The existing filter paper has poor adsorption and low filtration performance, resulting in low filtration efficiency, which can only filter out 50-60% of impurities in the oil; in addition, when the air filter paper is used in rainy and humid areas, the paper filter layer After moisture absorpt...

AI Technical Summary

Problems solved by technology

The existing filter paper has poor adsorption and low filtration performance, which leads to low filtration efficiency and can only filter out 50-60% of the impurities in the oil; in addition, when the air filter paper is used in rainy and high humidity areas, the paper filter layer After absorbing moisture, it will swell, which will reduce the pore size and porosity of the filter paper, resulting in the increase of filter resistance and the reduction of vehicle power. It also has the disadvantages of poor high temperature resistance, low tensile strength, and poor burst resistance, which limits the Service life of filter paper