Synthesis method of self-repairing microcapsule and spraying protective coating material capable of realizing self-repairing of scratches

A technology of self-healing microcapsules and a synthesis method, which is applied to the synthesis of self-healing microcapsules and the field of scratch self-repairing spray protective coating materials, can solve problems such as low repair efficiency, achieve rapid response, prolong service life, and improve mechanical properties. the effect of strength

Active Publication Date: 2021-01-15
河北帅阔达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

At present, the relatively new single microcapsule repair coating uses silicone or dry oil as the repair agent, and the repair efficiency is low

Method used

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  • Synthesis method of self-repairing microcapsule and spraying protective coating material capable of realizing self-repairing of scratches
  • Synthesis method of self-repairing microcapsule and spraying protective coating material capable of realizing self-repairing of scratches
  • Synthesis method of self-repairing microcapsule and spraying protective coating material capable of realizing self-repairing of scratches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of scratch self-repairing spray protective coating material that present embodiment proposes, comprises A component and B component;

[0059] The raw material mass fraction of described A component is as follows:

[0060] MDI-100 is 45 parts;

[0061] Polytetrahydrofuran diol is 45 parts;

[0062] 5 servings of self-healing microcapsules;

[0063] Dibutylbenzyl phthalate is 5 parts.

[0064] The mass parts of each composition in described B component is:

[0065] T-403 polyether amine is 50 parts;

[0066] Diaminodimethylthiotoluene is 40 parts;

[0067] Composite metal microcapsule emulsion is 8 parts;

[0068] Aluminum fine powder is 2 parts.

[0069] Preparation of self-healing microcapsules:

[0070] Take methyl methacrylate as the wall material, add 3.5g ethylene maleic anhydride copolymer (EMA) into 50mL deionized water and heat to dissolve to obtain 5.0% EMA aqueous solution; 9.80g methyl methacrylate, 1.0g peroxide Add benzoyl to a 500mL beaker, ...

Embodiment 2

[0077] A kind of scratch self-repairing spray protective coating material that present embodiment proposes, comprises A component and B component;

[0078] The raw material mass fraction of described A component is as follows:

[0079] MDI-50 is 45 parts;

[0080] Polytetrahydrofuran diol is 42 parts;

[0081] 8 servings of self-healing microcapsules;

[0082] Dibutylbenzyl phthalate is 5 parts.

[0083] The mass parts of each composition in described B component is:

[0084] T-403 polyether amine is 50 parts;

[0085] Diaminodimethylthiotoluene is 40 parts;

[0086] Composite metal microcapsule emulsion is 8 parts;

[0087] Aluminum fine powder is 2 parts.

[0088] Preparation of self-healing microcapsules:

[0089] Take methyl methacrylate as the wall material, add 3.5g ethylene maleic anhydride copolymer (EMA) into 50mL deionized water and heat to dissolve to obtain 5.0% EMA aqueous solution; 9.80g methyl methacrylate, 1.0g peroxide Add benzoyl to a 500mL beaker, a...

Embodiment 3

[0096] A kind of scratch self-repairing spray protective coating material that present embodiment proposes, comprises A component and B component;

[0097] The raw material mass fraction of described A component is as follows:

[0098] MDI-50 is 45 parts;

[0099] Polytetrahydrofuran diol is 45 parts;

[0100] 5 servings of self-healing microcapsules;

[0101] Dibutylbenzyl phthalate is 5 parts.

[0102] The mass parts of each composition in described B component comprises:

[0103] T-403 polyether amine is 45 parts;

[0104] Diaminodimethylthiotoluene is 45 parts;

[0105] Composite metal microcapsule emulsion is 8 parts.

[0106] Aluminum fine powder is 2 parts.

[0107] Preparation of self-healing microcapsules:

[0108] Take methyl methacrylate as the wall material, add 3.5g ethylene maleic anhydride copolymer (EMA) into 50mL deionized water and heat to dissolve to obtain 5.0% EMA aqueous solution; 9.80g methyl methacrylate, 1.0g peroxide Add benzoyl to a 500mL be...

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Abstract

The invention belongs to the field of coating compositions, and particularly relates to a synthesis method of a self-repairing microcapsule and a spraying protective coating material capable of realizing self-repairing of scratches. The spraying protective coating material capable of realizing self-repairing of scratches comprises a component A and a component B which are uniformly mixed, whereinthe component A is a semi-prepolymer, and the semi-prepolymer is obtained by taking isocyanate, polyether glycol, a diluent and the self-repairing microcapsule prepared by the synthesis method as rawmaterials, mixing the raw materials and then conducting reacting in inert gas; and the component B comprises amine-terminated polyether, a composite metal phase change microcapsule emulsion, an aminochain extender and metal micro-powder. Through optimization of a coating material component system, dual self-repairing of the coating at normal temperature can be realized, the corrosion resistance of the damaged coating is improved, and the service life of the coating is prolonged.

Description

technical field [0001] The invention belongs to the field of coating compositions, and in particular relates to a synthesis method of self-repairing microcapsules and a scratch self-repairing spray protective coating material. Background technique [0002] Organic anti-corrosion coatings are a common means to protect metals from corrosion, but due to the complex service environment of metal equipment, coatings are prone to aging, partial peeling, cracking and other phenomena. These damage phenomena of the coating often start from the microcracks in the coating. The expansion of the microcracks will cause the coating to be damaged or even peeled off, which will affect the protective performance of the coating and shorten the service life of the coating. In order to improve the service life and effectiveness of the coating, experts and scholars have proposed various methods. Among them, the intelligent self-healing coating prepared by the principle of bionics has received ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/04C09D175/08C09D7/62C09D7/63
CPCB01J13/043C09D175/08C09D7/62C09D7/70C09D7/63C08K2003/0812C08K13/06C08K9/10C08K5/12C08K3/08
Inventor 郭瑞
Owner 河北帅阔达新材料科技有限公司
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