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Water-based amino baked varnish for agricultural machine and preparation method thereof

A technology of amino baking varnish and water-based amino resin, which is applied in the direction of coating, etc., can solve the problems that it is difficult to realize the wet-on-wet of the two coatings, the inability to spray the topcoat, and the long spraying cycle, so as to shorten the spraying cycle and improve the decorative performance of the coating , the effect of improving production efficiency

Pending Publication Date: 2017-06-27
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the requirements of environmental protection, the current demand for water-based paint is increasing. With the application, various problems will follow. It is difficult for water-based amino baking paint to achieve two-coat wet-to-wet because the solvent is water, that is, the primer is not The topcoat cannot be sprayed when it is completely dry, which requires a bake for each coat, resulting in a waste of fuel and a long spraying cycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention provides a water-based amino baking varnish for agricultural machinery. The formula is calculated as follows by weight percentage: water-based resin: 60-70 parts of water-based acrylic resin, 10-15 parts of water-based amino resin; additives: 1-2 parts of environmentally friendly solvent, neutralizer 0.1-0.2 parts, 0.2-0.5 parts of defoaming agent, 1-3 parts of surface release agent, 0.4-0.6 parts of leveling agent, 0.3-0.5 parts of substrate wetting agent, 5-10 parts of deionized water, thickener 0.5-1.0 parts; adhesion promoter 0.1-0.3 parts.

[0026] The water-based amino baking varnish for agricultural machinery provided by the embodiment of the present invention uses water-based acrylic resin and water-based amino resin, and is cross-linked and cured at a high temperature of 150°C to obtain a high-gloss, high-decorative water-based baking varnish coating. The prepared water-based coating has a VOC≤ 80g / L, very low odor, more environmentally friendly t...

Embodiment 2

[0028] On the basis of Example 1, the manufacturers and models of raw materials are further limited, but what is listed here is only a specific example, and does not constitute a limitation to the present invention.

[0029] The selected formula is calculated as follows by weight percentage: water-based resin: 67 parts of water-based acrylic resin, 15 parts of water-based amino resin; additives: 2 parts of environmentally friendly solvent, 0.2 part of neutralizer, 0.4 part of defoamer, 3 parts of surface release agent, 0.6 parts of leveling agent, 0.5 parts of substrate wetting agent, 10 parts of deionized water, 1.0 parts of thickener; 0.3 parts of adhesion promoter.

[0030] Among them, the water-based acrylic resin is Wanhua Chemical's high-gloss acrylic dispersion A2042.

[0031] Among them, the water-based amino resin is one or both of the fully etherified amino resins Taiwan Changchun MR603 and Cytec 303.

[0032] Wherein, the environment-friendly co-solvent is one or b...

Embodiment 3

[0040] The difference with embodiment 2 is:

[0041] The selected formula is calculated as follows by weight percentage: water-based resin: 70 parts of water-based acrylic resin, 10 parts of water-based amino resin; additives: 1 part of environmentally friendly solvent, 0.1 part of neutralizer, 0.2 part of defoamer, 1 part of surface release agent, 0.4 parts of leveling agent, 0.3 parts of substrate wetting agent, 5 parts of deionized water, 0.5 parts of thickener; 0.1 part of adhesion promoter.

[0042] The present invention also provides a preparation method of water-based amino paint for agricultural machinery:

[0043] Step a, according to the ratio of raw materials, first mix the environmentally friendly solvent and neutralizer, then add 50% of the water in the formula, stir at a speed of 500r / min for 3 minutes, and set aside;

[0044] Step b, according to the ratio of raw materials, add the mixed solution in step a to the adhesion promoter, adjust the pH value to 7-8, s...

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Abstract

The invention discloses a water-based amino baked varnish for an agricultural machine and a preparation method thereof and belongs to the technical field of coatings. The water-based amino baked varnish is prepared from, by weight, water-based resins incuding 60-70 parts of water-based acrylic resin and 10-15 parts of water-based amino resin, additives including 1-2 parts of environmentally friendly solvent, 0.1-0.2 part of neutralizer, 0.2-0.5 part of antifoaming agent, 1-3 parts of surface isolation agent, 0.4-0.6 part of leveling agent, 0.3-0.5 part of base material wetting agent, 5-10 parts of deionized water and 0.5-1.0 part of thickening agent, and 0.1-0.3 part of adhesion promoter. The problems existing in the prior art can be solved, spraying of a next coating can be performed when a previous is not completely dried, multiple times of spraying can be performed, volatilization of organic solvents in the varnish does not occur in the last time of varnish baking, and pollution to the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based amino baking varnish for agricultural machinery and a preparation method thereof. Background technique [0002] With the requirements of environmental protection, the current demand for water-based paint is increasing. With the application, various problems will follow. It is difficult for water-based amino baking paint to achieve two-coat wet-to-wet because the solvent is water, that is, the primer is not The topcoat cannot be sprayed when it is completely dry, so each coat needs to be baked once, resulting in a waste of fuel and a long spraying cycle. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a water-based amino baking varnish for agricultural machinery, which can solve the problems existing in the prior art. The next coating can be sprayed when the previous coating is not completely...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D161/32C09D7/00C09D7/12
CPCC09D133/00C08L2205/035C09D7/40C09D7/43C09D7/65C08L61/32
Inventor 张海伟胡中源程璐
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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