Nanometer self-healing paint and preparation method thereof

A nano- and nano-silica technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as insufficient fullness, poor gloss and color retention of the paint film, and heavy odor

Active Publication Date: 2014-11-05
杭州家源环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of nanometer self-healing paint and its preparation method, solve the problems of poor environmental protection and heavy smell in the construction process of wood coa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Nano self-healing paint, which is composed of component A and component B with a weight ratio of 1:1; said component A is composed of 32% by weight of synthetic fatty acid resin, 18% of linear hydroxyl-containing polyester resin (soft linear polyester resin), 0.1% nano-silica, 0.1% defoamer, 0.1% leveling agent, 0.1% dispersant, 0.3% drier, 49.3% solvent; among them, The solvent is 29.3% PMA and 20% n-butyl acetate.

[0035] Component A preparation method is as follows:

[0036] (1) 32% by weight of synthetic fatty acid resin and 18% of linear hydroxy acid ester resin are added to the stirrer and stirred;

[0037] (2) Add 0.1% by weight of nano silicon dioxide, 0.1% of dispersant, and 0.1% of defoamer under the condition of low speed;

[0038] (3) After high-speed dispersion for 5-30 minutes, stir at low speed, add 0.1% leveling agent, 0.3% drier, and 49.3% solvent, stir for 3-10 minutes, and discharge to obtain component A.

[0039] The component B consists of 48% h...

Embodiment 2

[0043] Nano self-healing paint, which is composed of component A and component B with a weight ratio of 1:1. The component A is composed of the following raw materials in weight percentage: 30% synthetic fatty acid resin, 18% linear hydroxyl-containing poly Ester resin, L0.1% nano silica, 0.1% dispersant, 0.1% defoamer, 0.1% leveling agent, 0.3% drier, 3% pigment, 1% dumb powder, 47.3% solvent; Component B is composed of the following raw materials in weight percentage: 46% hexamethylene diisocyanate-based polyisocyanate, 50% n-butyl acetate, 4% ethyl acetate.

[0044] Its preparation method is as follows:

[0045] Preparation of Component A:

[0046] (1) Add 30% by weight synthetic fatty acid resin and 18% linear hydroxy acid ester resin to the stirrer and stir;

[0047] (2) Add 0.1% by weight of nano-silica, 0.1% of dispersant, 0.1% of defoamer, 3% of pigment, and 1% of dumb powder under the condition of low speed;

[0048] (3) After high-speed dispersion for 5-30 minutes...

Embodiment 3

[0052] Nano self-healing paint, which is composed of component A and component B with a weight ratio of 1:1.1; the component A is composed of 30% polyaspartate polyurea, 20% linear Hydroxyl-containing polyester resin, 0.4% nano silicon dioxide, 0.2% defoamer, 0.1% leveling agent, 0.1% dispersant, 0.2% drier, 49% solvent composition; the components B consists of 50% hexamethylene diisocyanate-based polyisocyanate and 50% n-butyl acetate by weight percentage. Its preparation method is identical with embodiment 1.

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PUM

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Abstract

The invention discloses a nanometer self-healing paint and a preparation method thereof, and belongs to the technical field of paint application. The invention solves the problems of weak scratch resistance and failure in self-healing of the wood lacquer surface in the prior art. The nanometer self-healing paint is composed of a component A and a component B. the component A consists of the following raw materials by weight: synthetic fatty acid resin / acrylic resin or polyaspartate polyurea, straight chain polyester resin containing hydroxyl, nanometer silicon dioxide, a dispersing agent, a defoaming agent, a leveling agent, a drying agent and a solvent; and the component B consists of the following raw materials by weight: hexamethylene diisocyanate, and acetic acid butyl ester; the component A and the component B are in the weight ratio of 1:0.8 to 1.2. The self-healing paint of the invention is not only environment-friendly but also has self-healing effect after scratching.

Description

technical field [0001] The invention belongs to the technical field of paint application, and in particular relates to a nanometer self-healing paint and a preparation method thereof. Background technique [0002] At present, many coatings used on furniture, wood, and automobile surfaces in the market have the functions of protection and aesthetic decoration. In the field of wood coatings and furniture coatings, they generally contain free TDI, and the scratches of the coating film cannot self-heal. Poor, the paint film in the automotive field cannot heal itself after being scratched, and it has been unable to meet people's needs. Contents of the invention [0003] The object of the present invention is to provide a kind of nanometer self-healing paint and its preparation method, solve the problems of poor environmental protection and heavy smell in the construction process of wood coatings and automotive coating metal / non-metallic paints in the prior art, and poor gloss a...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D7/12
Inventor 邓传均
Owner 杭州家源环保材料有限公司
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