Organic-inorganic hybrid silica modified acrylic resin and coating thereof

A technology of acrylic resin and silicon dioxide, applied in anti-corrosion coatings, coatings, etc., can solve the problems of easy carcinogenicity, high environmental pollution, and high toxicity, and achieve good corrosion resistance, improved shielding performance, and excellent weather resistance.

Active Publication Date: 2016-01-13
HAOLISEN COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general anti-corrosion coatings, passivating pigments are added to the paint film, and the passivating pigments passivate the metal surface on the anode area to promote the formation of a shielding layer. Chromate pigments are mainly used. Due to their high toxicity and carcinogenicity, many countries have Disabled
Moreover, the anti-corrosion coatings currently on the market are mainly solvent-based, which cause great environmental pollution.

Method used

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  • Organic-inorganic hybrid silica modified acrylic resin and coating thereof
  • Organic-inorganic hybrid silica modified acrylic resin and coating thereof
  • Organic-inorganic hybrid silica modified acrylic resin and coating thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) The formula of the machine-inorganic hybrid silica-modified acrylic resin:

[0022]

[0023] Mix active silicon dioxide containing vinyl, acrylic acid, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, and part of tert-butyl hydroperoxide evenly according to the formula amount, and it is called mixed solution a ; Mix part of tert-butyl hydroperoxide and ethylene glycol monobutyl ether evenly according to the formula quantity, which is called mixed solution b. Add propylene glycol monobutyl ether and diethylene glycol monobutyl ether into a reaction vessel with a stirrer and a condenser according to the formula, blow nitrogen gas, raise the temperature to 115°C, start adding the mixed solution a dropwise, and keep it warm after 3 hours Half an hour, then drop the mixed solution b, drop it for half an hour, then keep it warm for 2 hours, then cool down to below 45°C and discharge to obtain the organic-inorganic hybrid silica-modified acrylic resin; ...

Embodiment 2

[0028] 1) The formula of the machine-inorganic hybrid silica-modified acrylic resin:

[0029]

[0030] Mix active silicon dioxide containing vinyl, acrylic acid, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, and part of tert-butyl hydroperoxide evenly according to the formula amount, and it is called mixed solution a ; Mix part of tert-butyl hydroperoxide and ethylene glycol monobutyl ether evenly according to the formula quantity, which is called mixed solution b. Add propylene glycol monobutyl ether and diethylene glycol monobutyl ether into a reaction vessel with a stirrer and a condenser according to the formula, blow nitrogen gas, raise the temperature to 115°C, start adding the mixed solution a dropwise, and keep it warm after 3 hours Half an hour, then drop the mixed solution b, drop it for half an hour, then keep it warm for 2 hours, then cool down to below 45°C and discharge to obtain the organic-inorganic hybrid silica-modified acrylic resin; ...

Embodiment 3

[0035] 1) The formula of the machine-inorganic hybrid silica-modified acrylic resin:

[0036]

[0037] Mix active silicon dioxide containing vinyl, acrylic acid, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, and part of tert-butyl hydroperoxide evenly according to the formula, and it is called mixed solution a ; Mix part of tert-butyl hydroperoxide and ethylene glycol monobutyl ether evenly according to the formula quantity, which is called mixed solution b. Add propylene glycol monobutyl ether and diethylene glycol monobutyl ether into the reaction vessel with agitator and condenser according to the formula, blow nitrogen gas, heat up to 115°C, start adding the mixed solution a dropwise, keep it warm after 3 hours Half an hour, then drop the mixed solution b, drop it for half an hour, then keep it warm for 2 hours, then cool down to below 45°C and discharge to obtain the organic-inorganic hybrid silica-modified acrylic resin;

[0038] 2) the organic-i...

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Abstract

The invention relates to an organic-inorganic hybrid silica modified acrylic resin and a coating thereof. The organic-inorganic hybrid silica modified acrylic resin comprises, by weight, 8-14 parts of propylene glycol mono-n-butyl ether, 12-18 parts of diethylene glycol monobutyl ether, 10-12 parts of vinyl group-containing active silica, 9-11 parts of acrylic acid, 8-12 parts of hydroxypropyl methacrylate, 10-12 parts of methyl methacrylate, 17-19 parts of n-butyl acrylate, 5-7 parts of tert-butyl hydroperoxide and 7-9 parts of ethylene glycol monobutyl ether. The coating is suitable for anticorrosion of metal workpieces; and the final hardness of a coating layer obtained by using the coating reaches 2H, the impact strength is 50Kg.cm, the adhesion is 0 grade, the coating layer has very excellent corrosion resistance, the salt spray resistance reaches 1000h, the unidirectional corrosion width is not greater than 2mm, the coating layer has good weatherability, and a result of 1000h QUV ageing test shows that the light loss rate is not greater than 10%, and delta E is not greater than 1.0.

Description

[technical field] [0001] The invention belongs to organic-inorganic hybrid silicon dioxide modified acrylic resin and coating thereof. [Background technique] [0002] Every year, the national losses due to steel corrosion are very huge, because the corrosion resistance of the steel surface is poor, and once the surface is corroded, its performance and service life will be seriously affected. Therefore, it is necessary to treat its surface to improve its anti-corrosion performance. In general anti-corrosion coatings, passivating pigments are added to the paint film, and the passivating pigments passivate the metal surface on the anode area to promote the formation of a shielding layer. Chromate pigments are mainly used. Due to their high toxicity and carcinogenicity, many countries have Disabled. Moreover, the anti-corrosion coatings currently on the market are mainly solvent-based, which cause great environmental pollution. Therefore, it is urgent to develop a shielding l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/06C08F220/28C08F220/14C08F220/18C09D151/10C09D5/08C09D161/20C09D161/32C09D7/12
Inventor 刘薇薇孔凡桃徐庆李磨郑子童
Owner HAOLISEN COATING SHANGHAI
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