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

A technology of water-based primer and sealing primer, which is applied in the direction of biocide-containing paint, antifouling/underwater paint, coating, etc. It can solve the problems of insufficient performance and achieve excellent sandability and flatness, and thermal stability Increased resistance, fast drying and firmness build-up

Active Publication Date: 2015-07-08
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] In the foregoing, the preparation method includes the following steps:

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

Embodiment 1

[0040] Example 1: Add 5%-25% of the total mass of deionized water into the dispersion tank, stir at 300-400rpm for 20-30min, add 12%-25% lead-free pigment rutile titanium dioxide, Then add high molecular weight block copolymer or polycarboxylate sodium salt type dispersant 0.1% to 0.5%, water-based non-silicone fatty acid polymer or modified polyacrylic acid poly defoamer 0.1% to 0.5%, sodium hexametaphosphate Wetting agent 0.1%~0.3%, waterborne acrylate copolymer, polyether modified polysiloxane polymer leveling agent 0.2%~0.5%, non-ionic polyurethane thickener 0.2%~1%, benzotriazole UV light absorption stabilizer 0.1%~0.3%, disperse the system until the lead-free pigment fineness is less than 30~40μm at 800~1000rpm, then add 20%~40% acrylic emulsion, 20%~30% acid silica sol , Polyol polyurethane 6%~15%, add dithiosalicylic gum type anti-fungal and antibacterial agent 0.1%~0.2%, dipropylene glycol butyl ether or dipropylene glycol methyl ether film forming aid 0.5% at 600~800r...

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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 present invention relates to the IPC International Patent Classification C09D Waterborne Wood Coating Technology of Coating Composition, in particular to a waterborne primer used for wood enamel sealing 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. The VOC in coatings is mainly harmful to the human body caused 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 is harmful to the environment and health. It is an inevitable development trend for water-based wood coatings to replace traditional solvent-based coatings. Compared with traditional solvent-based coatings, water-based wood coatings are not only manifested in low VOC content, And it has the advantages of no e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D175/08C09D175/06C09D5/14C09D7/12
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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