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Water-based organosilicon coating and preparation method thereof

An organosilicon coating and organosilicon emulsion technology, applied in the coating field, can solve the problems of high cost, poor safety and environmental protection performance, and high VOC content of organosilicon coatings, and achieve the effects of good safety and environmental protection performance, energy saving, and VOC content reduction.

Active Publication Date: 2015-02-18
HUIZHOU LIDE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a water-based organic silicon coating, which aims to solve the technical problems of the existing organic silicon coatings such as high cost, high VOC content, poor safety and environmental protection performance, need to be heated to form a film and poor heat resistance

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0046] The present invention also provides a kind of preparation method of waterborne organosilicon coating, comprises the steps:

[0047] Preparation of epoxy silane modified silica sol;

[0048] Add silicone latex, dispersant, wetting agent, thickener, defoamer, bactericide and film-forming aid into the container, stir and mix evenly; in a preferred embodiment, the container is a paint can;

[0049] Continue to add fillers and pigments to the container, and disperse the solid particle size to ≤35um; in a preferred embodiment, adding fillers and pigments is carried out under stirring, which is conducive to uniform dispersion of fillers and pigments, and high-speed dispersion The particle size of final solid particles is less than or equal to 35um;

[0050] Continue to add epoxy silane modified silica sol to the container, stir and mix evenly; in a preferred embodiment, adding epoxy silane modified silica sol is carried out under stirring;

[0051] Continue to add ion-free w...

Embodiment 1

[0058] MP-50E silicone emulsion 30Kg, polycarboxylate potassium salt 3Kg, alkyl polyoxyethylene ether 1Kg, hydroxyethyl cellulose 3Kg, fatty acid salt 0.15Kg, isothiazolinone 0.15Kg, and dipropylene glycol butyl ether 2Kg Add the paint pot, stir and mix evenly; then, under stirring, sequentially add kaolin 7Kg, sericite powder 5Kg, silicon micropowder 10Kg and rutile titanium dioxide 20Kg, and disperse at a high speed until the particle size of the solid particles is ≤35um; then, while stirring Next, add 30Kg of epoxy silane-modified silica sol and mix evenly; finally, add 6Kg of deionized water and 1Kg of polyurethane polyether to adjust the viscosity to prepare a water-based silicone coating.

Embodiment 2

[0060] MP-50E silicone emulsion 35Kg, polycarboxylate potassium salt 2Kg, alkyl polyoxyethylene ether 0.8Kg, hydroxyethyl cellulose 2Kg, fatty acid salt 0.15Kg, isothiazolinone 0.15Kg, and dipropylene glycol butyl ether 2Kg, add it to the paint pot, stir and mix evenly; then, under stirring, add 7Kg of kaolin, 5Kg of sericite, 8Kg of silicon micropowder and 20Kg of rutile titanium dioxide in sequence, and disperse at a high speed until the particle size of the solid particles is ≤35um; then, Under stirring, add 25Kg of epoxy silane-modified silica sol and mix evenly; finally, add 6Kg of deionized water and 1Kg of polyurethane polyether to adjust the viscosity to prepare a water-based silicone coating.

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PUM

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Abstract

The invention discloses a water-based organosilicon coating. The water-based organosilicon coating comprises the following components in percentage by weight: 2.00-40.00 percent of an organosilicon emulsion, 12.00-40.00 percent of nano-silicon sol, 0.50-5.00 percent of a dispersant, 0.10-1.50 percent of a wetting agent, 1.00-45.00 percent of a packing, 10.00-25.00 percent of a pigment, 0.30-5.00 percent of a thickening agent, 0.00-1.50 percent of a flatting agent, 0.30-3.00 percent of a coalescing agent, 0.08-0.20 percent of a disinfectant, 0.00-0.50 percent of a foam killer and the balance of deionized water, wherein the solid content of the organosilicon emulsion is 50% and the nano-silicon sol is epoxy silane modified silica sol. The invention also discloses a preparation method of the water-based organosilicon coating. The water-based organosilicon coating is low in cost and excellent in environment-friendly performance, and a paint film with the water-based organosilicon coating is favorable in adhesion and strength and extremely good in heat resistance of up to 750 DEG C.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-based silicone coating and a preparation method thereof. Background technique [0002] Existing solvent-based silicone coatings include silicone resin liquid, fillers, pigments, additives, and organic solvents. The film-forming substance is silicone resin, and the film-forming substance is single. Due to the high content of the silicone resin liquid, the coating cost High; and due to the presence of organic solvents in solvent-based silicone coatings, the VOC content is high, toxic, pungent odor, poor environmental performance, flammable and explosive, and poor safety. In addition, the film formation of silicone coatings requires heating and baking, which wastes energy, and the heat resistance of the paint film is poor, and the performance of the paint film needs to be improved urgently. Contents of the invention [0003] The main purpose of the present invention is to provide ...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/14C09D7/12
Inventor 薛守芝
Owner HUIZHOU LIDE TECH CO LTD
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