Ultrafine glass fiber composite filter paper and making method thereof

Abstract

The invention discloses an ultrafine glass fiber composite filter paper. The filter paper is composed of 70-80% of ultrafine glass fibers with the fiber diameter of 2-4[mu]m and the fiber length of 3-10mm, 10-20% of meta-aramid with the diameter of 5-10[mu]m and the fiber length of 3-15mm, and 10-20% of polypropylene fibers with the diameter of 5-10[mu]m and the fiber length of 3-15mm and an adhesive, and the adhesive is one of phenolic resin, epoxy resin, acrylic resin and melamine resin. The invention also discloses a making method of the hydrophobic glass fiber filter paper. The method comprises the following steps: beating and mixing the ultrafine glass fibers, meta-aramid and the polypropylene fibers in proportion, removing residues, conveying the obtained mixed slip to a paper molding machine, molding to obtain wet paper, carrying out vacuum pumping filtration to remove water, sprinkling the adhesive, and drying the wet paper to obtain the above product. The ultrafine glass fiber composite filter paper made in the invention has the advantages of high filterability, high strength, good temperature resistance and wide application.

Description

Technical field [0001] The invention relates to a method for preparing filter paper, in particular to a method for preparing ultrafine glass fiber composite filter paper, and belongs to the field of filter materials. Background technique [0002] With the rapid development of science and technology, the continuous rise of power, steel, construction and other industries has created a more affluent, convenient and faster life for people. At the same time, environmental pollution is also seriously threatening human life and health. Recent air pollution The damage to the human body is particularly obvious, and large-scale haze weather has repeatedly hit. The state pays more and more attention to air environment quality, and PM2.5 is included in the new air quality evaluation system. How to use high-efficiency filter materials to reduce the entry of harmful gases in the air into the human body or to effectively filter the harmful gases discharged has become imminent. [0003] Filter p...

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Problems solved by technology

However, the filter papers prepared by the above two patents are all made of composite materials. During the working process of the materials, the structural stability is not high, and the lamination interface will be clogged, which will affect its filtering effect.