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Water-based acrylic acid dispersion applied to high-speed rail surface coating, and preparation method thereof

A water-based acrylic and surface coating technology, applied in the direction of coating, can solve the problems of low solid content, high viscosity, difficult to break through high solid content, etc., and achieve the effect of high viscosity and low VOC content

Inactive Publication Date: 2020-09-18
江苏巨珩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the conventional acrylic water-based dispersion needs 8% to 10% co-solvent, which cannot fully realize the low emission of VOC. Moreover, the conventional acrylic water-based dispersion has low solid content and high viscosity, and it is difficult to break through high solid content and low viscosity. , so the present invention provides a kind of aqueous acrylic dispersion that is applied to high iron surface coating to solve the above problems

Method used

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  • Water-based acrylic acid dispersion applied to high-speed rail surface coating, and preparation method thereof
  • Water-based acrylic acid dispersion applied to high-speed rail surface coating, and preparation method thereof
  • Water-based acrylic acid dispersion applied to high-speed rail surface coating, and preparation method thereof

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Effect test

Embodiment 1

[0024] The aqueous acrylic dispersion comprises 10 parts of reactive polyol solvents containing double bonds, 46 parts of monomers and chain transfer agents, 40 parts of deionized water and 4 parts of dimethylethanolamine in parts by mass.

[0025] Preferably, the monomers include 10 parts by mass of methyl methacrylate, 8 parts of hydroxyethyl acrylate, and 18 parts of styrene;

[0026] Preferably, the chain transfer agent butyl acrylate is 10 parts by mass;

[0027] Preferably, the double bond reactive polyol solvent is polyvinyl alcohol.

[0028] The present invention also provides a kind of preparation method that is applied to the aqueous acrylic acid dispersion of high iron surface coating, and it comprises:

[0029] Step 1, putting the reactive polyol solvent containing the double bond into the reaction kettle in required mass percentage;

[0030] Step 2. Close the feeding hole, turn on the nitrogen to replace the air in the kettle, and start to raise the temperature ...

Embodiment 2

[0034] The aqueous acrylic dispersion comprises 12 parts of a double bond-containing reactive polyol solvent, 46 parts of a monomer and a chain transfer agent, 40 parts of deionized water and 2 parts of dimethylethanolamine in parts by mass.

[0035] Preferably, the monomers include 10 parts by mass of methyl methacrylate, 8 parts of hydroxyethyl acrylate, and 18 parts of styrene;

[0036] Preferably, the chain transfer agent butyl acrylate is 10 parts by mass;

[0037] Preferably, the double bond reactive polyol solvent is polyvinyl alcohol.

[0038] The present invention also provides a kind of preparation method that is applied to the aqueous acrylic acid dispersion of high iron surface coating, and it comprises:

[0039] Step 1, putting the reactive polyol solvent containing the double bond into the reaction kettle in required mass percentage;

[0040] Step 2. Close the feeding hole, turn on the nitrogen to replace the air in the kettle, and start to raise the temperatur...

Embodiment 3

[0044] The aqueous acrylic dispersion comprises 10 parts of reactive polyol solvents containing double bonds, 46 parts of monomers and chain transfer agents, 40 parts of deionized water and 4 parts of dimethylethanolamine in parts by mass.

[0045] Preferably, the monomers include 12 parts of methyl methacrylate, 8 parts of hydroxyethyl acrylate, and 16 parts of styrene in parts by mass;

[0046] Preferably, the chain transfer agent butyl acrylate is 10 parts by mass;

[0047] Preferably, the double bond reactive polyol solvent is polyvinyl alcohol.

[0048] The present invention also provides a kind of preparation method that is applied to the aqueous acrylic acid dispersion of high iron surface coating, and it comprises:

[0049] Step 1, putting the reactive polyol solvent containing the double bond into the reaction kettle in required mass percentage;

[0050] Step 2. Close the feeding hole, turn on the nitrogen to replace the air in the kettle, and start to raise the tem...

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Abstract

The invention relates to the technical field of coatings, and especially relates to a water-based acrylic acid dispersion applied to a high-speed rail surface coating, and a preparation method thereof. The water-based acrylic acid dispersion comprises, by mass, 8-15 parts of a double bond-containing reactive polyol solvent, 46 parts of monomers and a chain transfer agent, 35-40 parts of deionizedwater and 2-8 parts of dimethylethanolamine, wherein the monomers comprise, by mass, 10-12 parts of methyl methacrylate, 8 parts of hydroxyethyl acrylate, 16-18 parts of styrene, 10 parts of the chaintransfer agent butyl acrylate and 10-12 parts of double-bond reactive polyol solvent polyvinyl alcohol. The preparation method comprises the following steps: adding polyvinyl alcohol into a reactionkettle; dropwise adding the monomers and the chain transfer agent into the reaction kettle within 4 hours, and keeping the temperature of the reaction kettle at 150 DEG C for 2 hours; cooling the reaction kettle to 90 DEG C, adding deionized water and dimethylethanolamine, stirring at a high speed for 1 hour, cooling to 80 DEG C or below, and packaging. The preparation method solves the problems of excessive assistants, low solid content, high viscosity and low VOC content in the existing water-based acrylic dispersion, and conforms to the environmental protection requirements.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based acrylic dispersion applied to high-speed iron surface coatings and a preparation method thereof. Background technique [0002] As an environmentally friendly water-based anti-corrosion coating, water-based acrylic dispersion is mainly used for steel structure anti-corrosion. With people's emphasis on environmental protection and construction safety, the emission requirements of VOC in conventional solvent-based coatings have become increasingly stringent, and VOC prevention and comprehensive treatment have reached unprecedented heights. The development of friendly coatings is an inevitable choice for my country's coatings industry to achieve product transformation and upgrading and maintain sustainable development. Water-based coatings are safe, environmentally friendly, and easy to construct. Water-based coatings are an important way to develop friendly coatings. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/20C08F220/14C08F220/18C08F2/38C09D125/14C09D7/20
CPCC08F212/08C08F2/38C09D125/14C09D7/20C08F220/20C08F220/14C08F220/1804
Inventor 陈玉英
Owner 江苏巨珩新材料科技有限公司
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