Self-crosslinkingacrylic emulsion for water-based metallic paint and preparation method thereof

Abstract

The invention discloses a self-crosslinkingacrylic emulsion for water-based metallic paint. The self-crosslinkingacrylic emulsion comprises the following main raw material recipes in parts by weight: 35-40 parts of methyl methacrylate, 30-35 parts of butyl acrylate, 15-20 parts of styrene, 10-25 parts of a functional monomer, 1-1.5 parts of an anionicemulsifier, 0.5-0.75 part of a non-ionic emulsifier, and 1.0-1.5 parts of an initiator, wherein the functional monomers adopt three or more of methylacrylic acid, a phosphate functional monomer, diacetone acrylamide, glycidyl methacrylate and acrylamide. Correspondingly, the invention also discloses a preparation method of the self-crosslinkingacrylic emulsion for the water-based metallic paint. The self-crosslinkingacrylic emulsion for the water-based metallic paint is environment-protecting, energy-saving, environmentally friendly, stable to heat and light, and not prone to aging under the action of ultraviolet rays, has low surface tension, has good stain resistance, and has a rust conversion function.

Description

technical field [0001] The invention relates to the field of acrylic resin polymers, in particular to a self-crosslinking acrylic emulsion for water-based metal paint and a preparation method thereof. Background technique [0002] At present, metal protective coatings widely used at home and abroad mainly use solvent-based resins as base materials, which contain a large amount of organic solvents, such as: xylene, toluene, ethyl acetate, etc. These volatile organic compounds volatilize a large amount during the film forming process. The VOC in the environment will not only endanger the construction personnel, but also volatilize into the atmosphere, causing environmental pollution and waste of resources. With the enhancement of human's awareness of environmental protection, countries around the world have issued corresponding environmental protection regulations to limit the emission of volatile organic compounds (VOC) in coatings. It is imminent to develop environmentally f...

AI Technical Summary

Problems solved by technology

[0004] The prior art also has the application of the crosslinking reaction of acrylic acid to the field of water-based metallic paints, such as "Acrylic Emulsion for Water-based Metallic Paints and Preparation Method thereof" disclosed by Patent Publication No. CN105254800 A. Vinyl monomers or vinyl aromatic compounds: 33 to 45 parts by weight, vinyl monomers containing hydroxyl groups: 1 to 7 parts by weight, vinyl monomers containing carboxyl groups: 0.5 to 1 parts by weight, functional monomers: 1 to 3 parts by weight Parts by weight, silicone monomer: 1 to 3 parts by weight, initiator: 0.15 to 0.4 parts by weight, complex emulsifier: 1 to 4 parts by weight, neutralizer: 0.1 to 0.5 parts by weight, pH buffer: 0.05 to 0.1 Parts by weight and deionized water: 45 to 50 parts by weight obtained through core / shell emulsion polymerization, but it only solves the problems of adhesion and water whitening resistance