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Household appliance color plate low-gloss alkali-resistant silver paint and preparation method thereof

A color plate and alkali-resistant technology, which is applied in the field of color-coated steel plate coatings, can solve the problems of limiting the use range and use environment of silver products for home appliances, alkali resistance affects surface gloss, color plate surface discoloration, etc., and achieves interlayer adhesion no adverse effects

Pending Publication Date: 2020-10-16
进彩关西涂料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in practice, the existing low-gloss silver paint has very poor alkali resistance. This is because the low-gloss silver paint contains matting powder and aluminum powder. The matting powder is made of silica, which will react with NaOH to form Sodium silicate and water will cause discoloration on the surface of the color plate; and aluminum powder will also react with NaOH to form NaAlO 2 And water, at this time the color paste under the aluminum powder leaks out, forming a visual difference
Therefore, the alkali resistance of home appliance silver products seriously affects its surface gloss, which severely limits the scope and environment of home appliance silver products.

Method used

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  • Household appliance color plate low-gloss alkali-resistant silver paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] A method for preparing a low-light alkali-resistant silver paint for home appliance color boards, comprising the following steps:

[0082] a. Divide 8kg of S-150 aromatic hydrocarbon solvent into two equal parts, soak 5kg of FZ-EV120 resin-coated aluminum powder and 5kg of KC303 pearlescent powder in the solvent for 3 hours respectively;

[0083] b. Mix 55kg NL345 saturated polyester resin, 10kg CYMEL308 amino resin, 1kg BYK057 defoaming aid, 1kg BYK-354 leveling agent, 1kg King N5228 acid catalyst, 3kg ACEMATT3300 surface coating matting powder, 3kg color paste and stir Uniform, 1000r / min, disperse for 40min;

[0084] c. Add the resin-coated aluminum powder and pearl powder soaked in step a respectively to the resin mixture in step b, stir again, the stirring speed is 1000r / min, and disperse for 40min.

Embodiment 2

[0086] A method for preparing a low-light alkali-resistant silver paint for home appliance color boards, comprising the following steps:

[0087] a. Divide 10kg of S-150 aromatic hydrocarbon solvent into two equal parts, soak 8kg of FZ-EV120 resin-coated aluminum powder and 3kg of KC303 pearlescent powder in the solvent for 5 hours respectively;

[0088] b. Mix 50kg NL345 saturated polyester resin, 15kg CYMEL308 amino resin, 0.5kg BYK070 defoaming aid, 2kg BYK-358 leveling agent, 0.5kg King N5225 acid catalyst, 5kg ACEMATT EXP3600 surface coating matting powder, 2kg color paste Mix and stir evenly, 1500r / min, disperse for 20min;

[0089] c. Add the resin-coated aluminum powder and pearl powder soaked in step a to the resin mixture in step b respectively, stir again at a stirring speed of 1500r / min, and disperse for 20min.

Embodiment 3

[0091] A method for preparing a low-light alkali-resistant silver paint for home appliance color boards, comprising the following steps:

[0092] a. Divide 8.5kg of PMA solvent into two equal parts, soak 6kg of FZ-EV170 resin-coated aluminum powder and 4.5kg of KC303 pearlescent powder in the solvent for 3.5 hours respectively;

[0093] b. 52kg NL385 saturated polyester resin, 14kg CYMEL327 amino resin, 0.6kg BYK077 defoaming aid, 1.8kg BYK-358 leveling agent, 0.6kg King N5225 acid catalyst, 4.5kg ACEMATT EXP3400 surface coating matting powder, Mix 2.2kg of color paste and stir evenly, 1200r / min, disperse for 35min;

[0094] c. Add the resin-coated aluminum powder and pearl powder soaked in step a to the resin mixture in step b respectively, stir again at a stirring speed of 1200r / min, and disperse for 35min.

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Abstract

The invention discloses a household appliance color plate low-gloss alkali-resistant silver paint and a preparation method thereof, and belongs to the field of color-coated steel plate coatings. The paint comprises the following components in parts by weight: 50-55 parts of saturated polyester resin; 10 to 15 parts of amino resin; 0.5 to 1 part of a defoaming auxiliary agent; 1-2 parts of a leveling agent; 0.5 to 1 part of an acid catalyst; 3-5 parts of surface coating type matting powder; 5 to 8 parts of resin coated aluminum powder; 8-10 parts of a solvent; 2-3 parts of color paste; and 3-5parts of pearl powder. Surface coating type matting powder and resin-coated aluminum powder are adopted and do not react with NaOH, so that the paint has good alkali resistance; meanwhile, pearl powder is adopted to replace part of color paste, so that color paste below aluminum powder cannot be exposed, and visual difference and color difference are not generated on the surface of the coating.

Description

technical field [0001] The application relates to the field of color-coated steel plate coatings, in particular to a low-light, alkali-resistant silver coating for home appliance color plates and a preparation method thereof. Background technique [0002] Color-coated steel plate is a kind of organic coated steel plate, which has the advantages of high strength, good corrosion resistance, convenient processing and forming, bright color and beautiful appearance. Color-coated steel sheets have been widely used in the fields of construction, household appliances, transportation tools, furniture and office appliances in the world. In my country, color-coated steel sheets are mainly used in the field of industrial construction, and color-coated steel sheets are rarely used in civil buildings. Transportation The transportation industry is in the start-up stage, and the use of color plates in the home appliance industry has just begun to accelerate. At the same time, my country is a...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D161/20C09D5/36C09D7/62C09D7/42
CPCC08K2003/0812C08K2003/2241C08K2003/2272C09D5/36C09D167/00C09D7/42C09D7/62C08L61/20C08K13/06C08K9/10C08K3/08C08K3/34C08K3/22
Inventor 田红恩赵保安王树莲
Owner 进彩关西涂料科技(上海)有限公司
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