Anti-corrosive and anti-aging coating for disc type vacuum filter

Abstract

The invention discloses an anti-corrosive and anti-aging coating for a disc type vacuum filter. The anti-corrosive and anti-aging coating is prepared from the following components in parts by weight:60 to 100 parts of No.60 petroleum asphalt, 25 to 40 parts of polyvinylidene fluoride glue, 10 to 28 parts of ethylene and vinyl acetate copolymer, 5 to 10 parts of calcium rosin, 2 to 5 parts of 400-mesh calcined magnetic powder, 2 to 7 parts of 400-mesh talcum powder, 5 to 6 parts of 500-mesh calcium carbonate, 10 to 12 parts of 800-mesh calcium bicarbonate, 1 to 3 parts of 800-mesh sierozem, 2to 5 parts of sodium hexametaphosphate, 1 to 2 parts of quartz powder, 1 to 2 parts of kaolin, 2 to 10 parts of fluorocarbon resin, 1 to 2 parts of pentaerythritol, 1 to 2 parts of melamine, 1 to 2 parts of titanium dioxide powder, 1 to 2 parts of adhesion force accelerant, 1 to 5 parts of viscosity adjusting solvent, 1 to 2 parts of dispersant, and 1 to 2 parts of defoaming agent. The anti-corrosive and anti-aging coating has the advantages that the reasonable raw material and proportional ratio are selected, the raw materials cooperate together in a synergistic way, the adhesion force is better, the sealing property is better, the coating film is dense and tight, the cracking and swelling are avoided, the anti-corrosive property is realized, and the service life of the filter is prolonged.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a corrosion-resistant and anti-aging coating for a disc vacuum filter. Background technique [0002] A filter (pressure filter) is a device that uses a porous filter material to achieve solid-liquid separation. Filters are used in chemical industry, petroleum, pharmaceutical, light industry, food, mineral processing, coal and water treatment and other departments. The filter is a new type of filter system with novel structure, small size, easy and flexible operation, high efficiency, airtight work, and is a multi-purpose filter equipment with strong applicability. [0003] In ancient China, filtering technology was already used in production. In 200 BC, there was paper made of plant fibers. In 105 AD, Cai Lun improved the papermaking method. After filtering through the gaps of the bamboo screen, a thin layer of wet pulp remains on the bamboo screen, and becomes paper after dryi...

AI Technical Summary

Problems solved by technology

[0004] In the existing filter, the inner wall paint is made of ordinary paint. After long-term use, the paint is easy to age and fall off, which will cause the filter equipment to be rusted and shorten the service life of the filter.