High-performance air filter paper and preparation method and application thereof

Abstract

The invention provides an air filter paper, comprising base paper and an impregnating agent for impregnating the base paper, the fibers used in the base paper include 20-40 parts of high-density cotton linter pulp and 5-5 parts of polypropylene fiber in parts by weight. 12 parts, 20-40 parts of alkali-free glass fiber chopped strands, 3-8 parts of ceramic fiber and 10-20 parts of carbon fiber, 0.1-4 parts of amphoteric polyacrylamide used in the preparation of base paper, 0.2 parts of modified starch light calcium carbonate ‑0.8 part, 0.5‑5 part of polyethylene oxide with a molecular weight of 2.5 million to 3 million, and 0‑0.2 part of a defoamer; the impregnating agent includes: modified phenolic resin; modified nano-titanium dioxide polytetrafluoroethylene emulsion ; Stearic acid modified liquid. In the present invention, the water resistance, temperature resistance, good non-stickiness, acid and alkali resistance, corrosion resistance, abrasion resistance, strength and deformation resistance of the obtained air filter paper are greatly improved through the formulation of the base paper and three times of impregnation. It can be blown back to remove dust, can be cleaned and used repeatedly, and has increased hydrophobic and lipophilic functions, and can be used for oil-water separation.

Description

technical field [0001] The invention relates to the technical field of filter paper, in particular to a high-performance air filter paper and its preparation method and application. Background technique [0002] Air filter paper is widely used. With the rapid development of social economy, the requirements for clean rooms such as medicine, biological sciences, integrated circuits, and sterile operating rooms are getting higher and higher. In order to improve the filtration efficiency of traditional air filter paper, only by increasing The quantification of air filter paper, the increase of quantification will often increase the resistance of air filter paper, and the increase of resistance will reduce the service life of air filter paper. cost, and because the existing air filter paper is made of ordinary wood pulp fiber, the air filter paper made of it generally has high tightness, low filtration efficiency, low ash capacity, short life, washing resistance, temperature resi...

AI Technical Summary

Problems solved by technology

[0002] Air filter paper is widely used. With the rapid development of social economy, the requirements for clean rooms such as medicine, biological sciences, integrated circuits, and sterile operating rooms are getting higher and higher. In order to improve the filtration efficiency of traditional air filter paper, only by increasing The quantification of air filter paper, the increase of quantification will often increase the resistance of air filter paper, and the increase of resistance will reduce the service life of air filter paper. cost, and because the existing air filter paper is made of ordinary wood pulp fiber, the air filter paper made of it generally has high tightness, low filtration efficiency, low ash capacity, short life, washing resistance, temperature resistance, wear resistance, Acid and alkali resistance, dust and oil stain peeling are relatively poor, and its filtration efficiency is generally lower than 90%, and paper air filter paper generally has poor curing and insufficient water resistance. When the air humidity changes, the paper is easy to Deformation, which affects the filtering effect