Automobile engine filter paper immersion resin emusion and preparation method thereof

Abstract

The invention relates to filter paper dipping resin emulsion of car engine, with the following components: styrene monomer 10-35%, acrylic ester monomer 10-35%, functional monomer 0.5-10%, emulsifier 0.5-5%, initiator 0.1-1% and deionized water 50-70%. The invention is uses by half-continue emulsion polermarization technology, with simple processive technique, friendly environment, low cost, and it can make the filter paper of car get ideal strength, destroying resistance, moisture resistance and enough deflexion, remarkably strenthed physical strength, mechanical stability and resistance to solvent.

Description

technical field [0001] The invention relates to a self-crosslinking auto engine filter paper impregnated resin emulsion and a preparation method thereof. Background technique [0002] Automobile engine filter filter paper is a common filter material. Compared with other filter materials, paper filter material has the advantages of low cost, good filtering effect, small size, light weight, and easy cleaning, so it is widely used. Filter paper made from papermaking fiber raw materials such as wood pulp, because its density is lower than ordinary paper, the paper is loose, low in intrinsic strength, soft in texture, cannot withstand the severe action of the processing process, and cannot meet the performance requirements of use as a filter material Therefore, the filter paper must be processed with resin to ensure the product quality and performance of the engine filter paper. The filter paper is impregnated with resin, which can improve the physical strength and structural st...

AI Technical Summary

Problems solved by technology

Wherein polyvinyl acetate emulsion (PVAc is called for short white glue) is cheap, easy to use, impregnates and processes automobile filter paper with PVAc emulsion, and production technology is mature, and safe and nontoxic, uses comparatively extensive (CN1388289A), but the automobile that processes through PVAc emulsion impregnation The disadvantages of filter paper products are: the stiffness of the paper is reduced in the environment of high temperature and high humidity, and the waterproof and moisture-proof performance is not good, which will bring difficulties to the processing and use of automotive filter elements in the future.

When forming a film, PVA has an isolation effect on each latex particle, which increases the discontinuity and inhomogeneity of the film. At the same time, PVA exists in a free state in the film, and it has strong water absorption. The presence of free PVA will greatly reduce the cohesiveness, water resistance, weather resistance and heat resistance of PVAc emulsion.

These properties of PVAc resin emulsions can be improved to a certain extent by copolymerization with acrylate monomers, but the problem of hydrolysis of PVAc molecules cannot be fundamentally solved. Adding a crosslinking agent during the impregnation process, such as adding melamine formaldehyde resin, can also improve the performance of PVAc resins. The waterproof and heat-resistant performance of the emulsion, but this method of adding a cross-linking agent will not only complicate the impregnation process, but also affect other properties of the filter paper, such as air permeability, strength, etc.