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Aqueous dull finishing coat, preparation method and use method thereof

A matte surface, water-based technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of low hardness, furniture surface damage, paint film is easy to be scratched, etc., achieve good chemical resistance, improve scratch resistance damage, excellent chemical resistance

Inactive Publication Date: 2010-06-02
SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many water-based paint products on the market, mainly including one-component water-based paint and two-component water-based paint, but these water-based paints have a common problem, that is, the paint film is easily scratched and has low hardness. damage to the surface of the furniture

Method used

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  • Aqueous dull finishing coat, preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] One. preparation embodiment 1 anti-scratch water-based matt finish paint main paint, step is as follows:

[0055] Take each component according to the weight listed in "Example 1" in Table 1, first add acrylic emulsion and dispersant to the production container, disperse at 500RPM for 3-5 minutes until uniform, add thickener, defoamer, Foam suppressor, disperse at 500RPM for 3-5 minutes until uniform, then add matting powder and glass powder under stirring state, disperse at 1000RPM for 10-15 minutes to fineness≤25μm, finally add wetting agent, wax slurry, water and synthetic Membrane aid, disperse at 500RPM for 10-15 minutes until uniform, and filter through 100 mesh to obtain scratch-resistant water-based matte finish paint.

[0056] 2. Preparation of supporting curing agent: take 80Kg of hydrophilic aliphatic polyisocyanate of XP2451 type hexamethylene diisocyanate of Bayer Company, 20Kg of propylene glycol methyl ether acetate, and add the two kinds of raw materials...

Embodiment 2

[0060] With each component weight listed in "embodiment 2" in table 1, repeat the method (only each component weight changes) described in above-mentioned example 1, make the anti-scratch water-based matte finish paint main paint; Repeat example Components, weight and preparation method of the curing agent in 1 to obtain the curing agent, mix the main paint with the curing agent and water in a weight ratio of 100:50:20 (NCO / OH=2.5), then let stand for 10 minutes, then Carry out construction and drying according to the method described in example 1, then obtain the scratch-resistant water-based matt finish paint film.

[0061] The routine performance test results are shown in the corresponding data of "Example 2" in Table 2.

Embodiment 3

[0063]With each component weight listed in "embodiment 3" in table 1, repeat the method described in above-mentioned example 1 (only each component weight changes), make the anti-scratch water-based matt finish paint main paint; Repeat example Components, proportions and preparation methods of the curing agent in 1 to obtain the curing agent, mix the main paint with the curing agent and water in a weight ratio of 100:50:20 (NCO / OH=2.5), and then let it stand for 10 minutes. Then carry out application and drying according to the method described in Example 1, and then obtain a scratch-resistant water-based matte finish paint film.

[0064] The routine performance testing results are shown in the corresponding data of "Example 3" in Table 2.

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Abstract

The invention relates to an aqueous dull finishing coat with scratch resistance, a preparation method and a use method thereof. Main varnish is prepared from the following components in parts by weight: 60-80 parts of acrylic acid emulsion, 0.5-3 parts of thickening agent, 0.1-1.0 part of defoaming agent, 5-10 parts of glass powder, 0.1-1.0 part of foam inhibitor, 3-8 parts of filming auxiliary agent, 0.1-1.0 part of dispersant, 0.1-0.5 part of wetting agent, 1.0-3.0 parts of extinction powder, 0.5-3.0 parts of wax pulp and 1-20 parts of water; a curing agent of the aqueous dull finishing coat is mixed by 80 parts by weight of aliphatic polyisocyanate and 20 parts by weight of propylene glycol methyl ether acetate; and the ratio of curing agent NCO to main varnish OH is 2.5. The main varnish is prepared by the steps of adding the acrylic acid emulsion into a container, adding the thickening agent, the defoaming agent, the foam inhibitor and the dispersant under stirring, and dispersing at 500RPM for 5-8 minutes till being uniform; afterwards, after adding the extinction powder, the glass powder and the wax pulp under stirring, dispersing at 1000RPM for 15 minutes till the fineness is not more than 25mum; and then, adding the wetting agent, the filming auxiliary agent and the water, dispersing at 500RPM for 10 minutes till being uniform and filtering by a sieve with 100 meshes so as to obtain the aqueous dull finishing coat. The aqueous dull finishing coat is used by mixing in the weight mixture ratio of the main varnish to the curing agent to tap water being 100:50:20. A varnish film has very good hardness, toughness, scratch resistance, abrasion resistance and weather resistance, can be recoated without blanching and has especially good chemical resistance.

Description

technical field [0001] The invention relates to a water-based paint, in particular to a water-based matte finish paint and its preparation method and application method. Background technique [0002] At present, there are many water-based paint products on the market, mainly including one-component water-based paint and two-component water-based paint, but these water-based paints have a common problem, that is, the paint film is easily scratched and has low hardness. damage to the surface of the furniture. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an anti-scratch water-based matte finish paint and its preparation method and application method. [0004] In order to solve the above problems, the present invention provides a water-based matte finish paint, the main paint of which is made of the following components by weight: acrylic emulsion 60-80 [0005] Thickener 0.5-3 [0006] Defoamer 0.1-1.0 [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D175/14C09D5/00
Inventor 郭忠义宋梓琪胡基如王红梅林伟新
Owner SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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