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Self-cleaning water-based nano coating

A nano-coating and self-cleaning technology, applied in anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of not meeting the needs of use, being polluted, and not being able to fully disperse pigments and fillers

Pending Publication Date: 2022-03-11
广东鑫皇冠新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, in order to solve the problem that water-based nano-coatings cannot fully disperse pigments and fillers, are easily corroded and polluted, and cannot meet the needs of use, the invention provides a self-cleaning water-based nano-coating and a preparation method thereof. The specific technical scheme is as follows:

Method used

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preparation example Construction

[0038] In addition, the present application also provides a preparation method of self-cleaning water-based nano-coating, comprising the following steps:

[0039] Add water-based polyurethane acrylic emulsion, polyamide-imide resin, modified epoxy resin, diatomaceous earth, filler and dispersant to the reaction kettle, and stir at 800r / min-1200r / min for 30min under the first temperature condition -60min, obtain mixture A;

[0040] Add a catalyst, a coupling agent and an anti-corrosion additive to the mixture A, and stir at a speed of 300r / min-500r / min under ultrasonic conditions for 15min-20min to obtain a mixture B;

[0041] Add a curing agent, a defoamer and a rheological agent to the mixture B, and stir at a speed of 1000r / min-1200r / min for 20min-30min under the second temperature condition to obtain a self-cleaning water-based nano coating.

[0042] In one embodiment, the first temperature condition is 45°C-60°C.

[0043] In one embodiment, the ultrasonic conditions are:...

Embodiment 1-3

[0048] The preparation raw materials of the self-cleaning water-based nano paint of embodiment 1-3 are as shown in table 1;

[0049] The preparation method of the self-cleaning water-based nano paint of embodiment 1-3 may further comprise the steps:

[0050] Add 3g of tridecafluorooctyltriethoxysilane, 2g of toluene diisocyanate, 3g of isophorone diisocyanate and 6g of isopropanol into the mixing kettle, and mix at a speed of 800r / min-1200r / min for 10min- After 20 minutes, it was used as a coupling agent for later use;

[0051] 80g coconut acid diethanolamide is mixed with 20g3-propanediol, as anti-corrosion auxiliary agent, for subsequent use;

[0052] Add 2g of zinc oxide, 5g of silicon dioxide, 3g of bismethylolpropionic acid, and 6g of calcium carbonate into the ball mill, and ball mill for 20 minutes at a speed of 50r / min-100r / min and a temperature of 45°C-50°C After -40min, it will be used as a dispersant for later use;

[0053] Add water-based polyurethane acrylic em...

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Abstract

The invention provides a self-cleaning water-based nano coating and a preparation method thereof. The self-cleaning water-based nano coating is prepared from the following raw materials: water-based polyurethane acrylic emulsion, polyamide-imide resin, modified epoxy resin, diatomite, a catalyst, a coupling agent, a curing agent, a defoaming agent, a rheological agent, a dispersing agent and an anti-corrosion additive. The self-cleaning water-based nano coating with high overall stability and remarkable corrosion resistance can be obtained by optimizing formula components, the coupling agent is prepared by compounding tridecafluorooctyltriethoxysilane, toluene diisocynate, isophorone diisocyanate and isopropyl alcohol, the water resistance and pollution resistance of a coating can be promoted, and the self-cleaning water-based nano coating has the advantages that the self-cleaning water-based nano coating is high in overall stability and remarkable in corrosion resistance; coco fatty acid diethanol amide and 3-propanediol in the anti-corrosion additive are combined for use, the dispersing agent is prepared from zinc oxide, silicon dioxide, bis (hydroxymethyl) propionic acid and calcium carbonate, and then the dispersing agent, the coupling agent and the anti-corrosion additive have a synergistic effect, so that the anti-corrosion and water-resistant effects of the coating are further improved.

Description

technical field [0001] The invention relates to the field of paint preparation, in particular to a self-cleaning water-based nano paint and a preparation method thereof. Background technique [0002] Nano-coatings have a wide range of uses, such as public facilities, household appliances, ships, military and chemical anti-corrosion and other fields. In recent years, with the promulgation of some green environmental protection policies, water-based nano-coatings have attracted more and more attention from researchers and enterprises. Although there are many water-based nano-coatings on the market and have been industrialized, there are still the following problems: the surface tension of water-based nano-coatings is high, and the pigments and fillers cannot be fully dispersed, and water molecules are easy to enter the interior of the matrix and cause corrosion. During the process, the highly hydrophilic coating is easily polluted, which leads to the performance of the water-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D179/08C09D163/00C09D5/08C09D7/61C09D7/63
CPCC09D175/14C09D5/08C09D7/61C09D7/63C09D7/70C08K2003/2296C08K2003/265C08K2201/014C08L79/08C08L63/00C08K7/26C08K5/20C08K5/053C08K3/22C08K3/36C08K5/09C08K3/26C08K5/5419C08K5/29C08K5/05C08K13/04
Inventor 申国辉谭贺洵周立平
Owner 广东鑫皇冠新材料有限公司
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