A kind of quick-drying non-benzene alkyd coating and preparation method thereof

Abstract

The invention relates to a quick-drying benzene-free alkyd coating and a preparation method thereof. The coating comprises the following components in parts by weight: 20-90 parts of modified alkyd resin, 10-70 parts of environment-friendly organic solvent, modified 1-20 parts of resin, 0.1-10 parts of drier, 0.05-5 parts of leveling agent, 0.05-5 parts of defoamer, 0.05-5 parts of anti-settling agent, 0.05-5 parts of anti-skinning agent, 1 part of pigment and filler ~10 servings. The fast-drying benzene-free alkyd coating of the present invention adopts modified alkyd resin, environment-friendly fast volatile solvent and modified resin to solve the problems of slow surface drying and poor adhesion of the coating film. The introduction of amino groups into the alkyd resin structure is conducive to the rapid curing of the coating film. The modified resin is more easily soluble in alkane solvents, and can obtain excellent adhesion, salt spray resistance, heat and humidity resistance, and impact resistance after film formation. and excellent electrical properties.

Description

Technical field [0001] The present invention relates to the field of coatings, in particular, it relates to a fast drying alkyd benzene-deposited coatings. Background technique [0002] Deposited coatings applied to a printed circuit board or other electronic substrate and the protective coating and consistent shape of the object to be coated. It is possible to provide environmental and mechanical protection to the electronic circuits and components from moisture, salt spray, and other environmental mold, thereby improving the reliability and security of the printed circuit board, to prolong the life of electronic products . [0003] Alkyd paint after ten years of development, the technology is mature, low cost, widely used, but less alkyd type deposited coatings can be applied to the circuit board protection product use. Conventional dry product exists slow, poor complex type of circuit board attachment ability, it contained aromatic solvents cause harm to humans, environmental ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of traditional alkyd coatings such as slow surface drying, strong smell of aromatic solvents, and inability to effectively protect complex types of circuit boards, the present invention provides a fast-drying benzene-free alkyd coating. Contains the following components by weight: 20-90 parts of modified alkyd resin, 10-70 parts of environment-friendly organic solvent, 1-20 parts of modified resin, 0.1-10 parts of drier, 0.05-5 parts of leveling agent , 0.05-5 parts of defoaming agent, 0.05-5 parts of anti-settling agent, 0.05-5 parts of anti-skinning agent, 1-10 parts of pigment and filler; the mass ratio of the modified alkyd resin to the modified resin is: 100 1 part of modified alkyd resin, 5-25 parts of modified resin, such a proportion can obtain excellent adhesion and heat and humidity resistance; the oil degree of the modified alkyd resin is 45-55%; the modified alcohol The acid resin contains the following components in parts by weight: 20-60 parts of unsaturated fatty acid, 10-20 parts of polyol, 1-10 parts of isocyanate resin, 4-16 parts of epoxy resin, 2-12 parts of polyamine, and 0.01 parts of catalyst ~1 part, solvent 20~50 parts

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