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Water-based primer for wood enamel sealing and preparation method thereof

A water-based primer and sealing primer technology, used in biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve problems such as insufficient performance, and achieve excellent sandability and smoothness, drying speed and High-performance effects such as fast hardness build-up, anti-bulging effect and sandability

Active Publication Date: 2018-03-23
上海君子兰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, it is very easy to show its lack of performance when used on dining tables and floors. This functional defect has led to the development of water-based paint.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037]Among the foregoing, the preparation method comprises the following steps:

[0038] Add additives and deionized water accounting for 5% of the total mass of deionized water into the dispersion tank, stir at a speed of 300 to 400rmp for 20 to 30 minutes, then add lead-free pigments, and shake the system at a speed of 800 to 1000rmp Disperse until the fineness of the lead-free pigment is less than 25-40μm, then add the remaining deionized water components, then add acrylic emulsion, silica sol, polyurethane, and add anti-mold and antibacterial agents and film-forming aids at a speed of 600-800rmp , continue to disperse for 25min to 40min, and measure the viscosity to be (35±2)s, then filter and discharge to obtain the water-based wood enamel sealing primer.

Embodiment 1

[0040] Example 1: Add 5% to 25% of the total mass of deionized water into the dispersion tank, stir at a speed of 300 to 400rmp for 20 to 30 minutes, add 12% to 25% of lead-free pigment rutile titanium dioxide, Then add 0.1% to 0.5% of high molecular weight block copolymer or polycarboxylate sodium salt type dispersant, 0.1% to 0.5% of water-based non-silicone fatty acid polymer or modified polyacrylic acid polydefoamer, sodium hexametaphosphate Wet agent 0.1%~0.3%, water-based acrylate copolymer, polyether modified polysiloxane polymer leveling agent 0.2%~0.5%, non-ionic polyurethane thickener 0.2%~1%, benzotriazoles UV absorption stabilizer 0.1%~0.3%, disperse the system at the speed of 800~1000rmp until the fineness of the lead-free pigment is less than 30~40μm, then add 20%~40% of acrylic emulsion and 20%~30% of acidic silica sol , polyol polyurethane 6% to 15%, add dithiosalicyl gum type anti-mold and antibacterial agent 0.1% to 0.2% at the speed of 600 to 800rmp, dipropy...

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Abstract

The invention discloses a water-based primer for wood enamel sealing. The water-based primer for wood enamel sealing contains the following raw materials in percentage by mass: 20-40% of an acrylic emulsion, 20-30% of silica sol, 6-15% of polyurethane, 12-25% of a lead-free pigment and 5-25% of deionized water, and further comprises the following auxiliaries: 0.1-0.5% of a dispersant, 0.1-0.5% of a defoamer, 0.1-0.3% of a wetter, 0.2-0.5% of a leveller, 0.2-1% of a thickener and the like. According to the water-based primer for wood enamel sealing, high-purity stable water-based acidic silica sol is selected, only contains moisture and volatile matters, has the characteristics of no smell, no toxicity, high-temperature resistance, no flash point and flame resistance, cooperates with the homogeneous-phase collocation of the other materials in the formula, and forms a glass enamel sealing film layer which is incapable of being dissolved and deteriorated after coating the surface of a wood material to form a film; the coated wood material can also be effectively protected; the scrubbing resistance and the contamination resistance are obviously improved.

Description

technical field [0001] The invention relates to IPC international patent classification C09D paint composition water-based wood coating technology, in particular to a water-based primer for sealing wood enamel and a preparation method thereof. Background technique [0002] Environmental protection regulations formulated by various countries have strict restrictions on volatile organic compounds (VOC) in coatings. VOCs in coatings are mainly harmful substances produced by solvent volatilization during drying and film formation. Traditional solvent-based wood coatings contain a large amount of solvents and There will be residual toxic monomers, which are harmful to the environment and health. It is an inevitable development trend for water-based coatings, including water-based wood coatings, to replace traditional solvent-based coatings. Compared with traditional solvent-based coatings, water-based wood coatings not only have low VOC content, but also And it has the advantages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/00C09D175/08C09D175/06C09D5/14C09D7/61
CPCC08L2205/035C09D5/14C09D5/16C09D7/61C09D7/63C09D151/00C08L75/08C08L75/06C08K3/36C08K2003/2241C08K2003/329C08K5/3475
Inventor 马强华邓文根欧政忠
Owner 上海君子兰新材料股份有限公司
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