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Water-based acrylic protective coating

A technology of water-based acrylic and protective coatings, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of poor coating film compactness, surface corrosion of metal materials, poor shielding performance, etc., and achieve good anti-rust, scratch-resistant protection performance, high The effect of cleaning protection performance

Active Publication Date: 2021-10-22
常州能邦阻尼材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing acrylic protective materials all have the following defects and deficiencies: (1) the gloss retention and aging resistance of acrylic polymers are better but the compactness of the coating film is relatively poor, and the shielding performance to water vapor and oxygen is poor, and it is easy to Corrosion of the surface of metal materials; (2) Since the film-forming process of water-based coatings is accompanied by the evaporation of water, and the evaporation rate of water will affect the fusion of polymer particles; (3) the inorganic powder in the coating is not easy to Forms a smooth and dense coating on polymer surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A water-based acrylic protective coating, comprising the following components by weight: 50 parts of acrylic emulsion, 8 parts of silica fume powder, 5 parts of bauxite trihydrate, 3 parts of modified bentonite, 10 parts of mica, 1 part of dispersant, defoaming agent 0.3 part of agent, 0.2 part of derusting agent, 1 part of film-forming agent, 10 parts of water, 5 parts of thickening agent; What described dispersant adopted is the dispersant that German Baker Gilini Company produces; Described defoamer What adopt is polyether defoamer; The particle diameter of described mica is 200 orders; Described film-forming agent is compounded by ethylene glycol and diethylene glycol butyl ether according to volume ratio 1:3; Described The modified bentonite is polystyrene-coated bentonite particles.

[0027] The preparation method of the bentonite particle coated with polystyrene used in above-mentioned embodiment 1 comprises the steps:

[0028] (1) Be that 300 mesh bentonites ar...

Embodiment 2

[0033] A water-based acrylic protective coating, comprising the following components by weight: 60 parts of acrylic emulsion, 10 parts of silica fume powder, 8 parts of bauxite trihydrate, 1 part of modified bentonite, 7 parts of mica, 2 parts of dispersant, defoaming agent 0.2 part of agent, 0.5 part of derusting agent, 2 parts of film-forming agent, 2 parts of water, 8 parts of thickening agent; What described dispersant adopted is the dispersant that German Baker Gilini Company produces; Described defoamer What adopt is polyether defoamer; The particle diameter of described mica is 200 orders; Described film-forming agent is compounded by ethylene glycol and diethylene glycol butyl ether according to volume ratio 1:3; Described The modified bentonite is polystyrene-coated bentonite particles.

[0034] The preparation method of the bentonite particle coated with polystyrene used in above-mentioned embodiment 2 comprises the steps:

[0035] (1) Bentonite with a particle diam...

Embodiment 3

[0040] A water-based acrylic protective coating, comprising the following components by weight: 70 parts of acrylic emulsion, 5 parts of silica fume powder, 10 parts of bauxite trihydrate, 5 parts of modified bentonite, 5 parts of mica, 1.5 parts of dispersant, defoaming agent 0.1 part of agent, 0.1 part of rust remover, 3 parts of film-forming agent, 30 parts of water, 10 parts of thickening agent; What described dispersant adopted is the dispersant that German Baker Gilini Company produces; Described defoamer A polyether defoamer is used; the particle size of the mica is 200 mesh; the film-forming agent is compounded by ethylene glycol and diethylene glycol butyl ether in a volume ratio of 1:3; the The modified bentonite is polystyrene-coated bentonite particles.

[0041] The preparation method of the bentonite particle coated with polystyrene used in above-mentioned embodiment 3 comprises the steps:

[0042] (1) Bentonite with a particle diameter of 300 meshes is dispersed...

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Abstract

The invention discloses a water-based acrylic protective coating. The coating comprises the following components in parts by weight: 50-70 parts of an acrylic emulsion, 5-10 parts of silica fume, 5-10 parts of alumina trihydrate, 1-5 parts of modified bentonite, 5-10 parts of mica, 1-2 parts of a dispersing agent, 0.1-0.3 part of a defoaming agent, 0.1-0.5 part of a rust remover, 1-3 parts of a film-forming agent, 1-30 parts of water and 5-10 parts of a thickening agent. According to the invention, bentonite is modified, so that good compatibility is obtained in the system, and the film-forming property of the coating is better. A silane coupling agent is adopted to modify bentonite, surface hydroxyl disappears, so that the bentonite has good hydrophobicity, meanwhile, a good core-shell structure is formed, and in the coating film forming process, surface tension of water and a polymer is increased, and film forming on the surface of the polymer is promoted. The coating disclosed by the invention has relatively good protective properties such as corrosion resistance, wear resistance and scratch resistance, and has very important practical significance.

Description

technical field [0001] The invention relates to the technical field of paint chemical industry, in particular to a water-based acrylic protective paint. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for environmental protection materials. The existing acrylic protective materials all have the following defects and deficiencies: (1) the gloss retention and aging resistance of acrylic polymers are better but the compactness of the coating film is relatively poor, and the shielding performance to water vapor and oxygen is poor, and it is easy to Corrosion of the surface of metal materials; (2) Since the film-forming process of water-based coatings is accompanied by the evaporation of water, and the evaporation rate of water will affect the fusion of polymer particles; (3) the inorganic powder in the coating is not easy to Forms a smooth and dense coating on polymer surfaces. Chinese patent CN104830181A provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/61C09D5/08C09D7/20C09D7/62C09D7/63
CPCC09D133/04C09D7/61C09D5/08C09D7/20C09D7/62C09D7/63C08K13/06C08K9/10C08K9/06C08K3/346C08K5/053C08K5/06C08K3/34
Inventor 徐斌刘春林曹峥成骏峰
Owner 常州能邦阻尼材料科技有限公司
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