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Waterborne metal baking varnish with flexibility and hardness and low temperature reactivity, and preparation method and application thereof

A metal baking paint, water-based technology, applied in coatings, polyester coatings, etc., can solve problems such as adhesion, salt spray resistance, chemical resistance, baking temperature, baking time, and flexibility and hardness. , to achieve the effect of improving operability and controllability, comprehensive improvement and balance of flexibility and hardness, and reducing baking temperature and baking time

Active Publication Date: 2019-09-10
深圳市雷巴环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

5. The degree of wear resistance is different. If you hit the paint with a hard object, there is no abnormality and the paint film is not damaged; while the spray paint is prone to cracks, serious paint film peeling off, white peeling
[0004] However, if the conventional water-based metal baking paint wants to achieve good performance, the baking temperature and baking time are more demanding, and it is difficult to balance the flexibility and hardness. The hardness is high, the flexibility is not good, and it is not impact resistant. , the hardness decreases, the crosslink density decreases, resulting in a decrease in adhesion, salt spray resistance and chemical resistance

Method used

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  • Waterborne metal baking varnish with flexibility and hardness and low temperature reactivity, and preparation method and application thereof
  • Waterborne metal baking varnish with flexibility and hardness and low temperature reactivity, and preparation method and application thereof
  • Waterborne metal baking varnish with flexibility and hardness and low temperature reactivity, and preparation method and application thereof

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preparation example Construction

[0069] The present invention also provides a kind of preparation method of water-based metal baking varnish as described in any one of above-mentioned technical scheme, comprises the following steps:

[0070] 1) After mixing water-based polyester and water, mixture A is obtained; after premixing defoamer, wetting agent, cosolvent, catalyst and pH regulator, mixture B is obtained;

[0071] 2) After continuing to mix the mixture A, mixture B, acrylic resin and amino resin obtained in the above steps, mixture C is obtained;

[0072] 3) The mixture C obtained in the above steps, the thickener and the water-based aluminum silver paste are finally mixed to obtain a water-based metallic baking paint.

[0073] In the preparation method of the present invention, the specific preferred scheme of the raw material, and the preferred numerical value of the number of added parts are consistent with the specific preferred scheme of the components in the aforementioned water-based metal bakin...

Embodiment 1

[0100] A kind of water-based metallic baking varnish comprises the following components according to mass percentage:

[0101] KT6031: 40%, WX194: 30%, CYMEL303: 5%, CYMEL325: 5%, butyl glycol ether: 10%, DMEA: 0.5%, tego wet 4100: 0.2%, BYK 028: 0.3%, OS6050: 0.6%, BD7744: 0.2%, water-based aluminum silver paste: 3%, deionized water: 5.2%.

[0102] The preparation steps of water-based metal baking paint are as follows:

[0103] (1) According to the above mass fraction, first mix WX194 with deionized water to obtain mixture A, then pre-mix ethylene glycol butyl ether, BYK028, tego wet4100, DMEA, and BD7744 to obtain mixture B. At 400-500rpm, the mixture Add B slowly to mixture A;

[0104] (2) After the addition of mixture B, slowly add KT6031, CYMEL303, and CYMEL325, and disperse at 1000 rpm for 20 minutes after the addition to obtain mixture C;

[0105] (3) Finally, add OS6050 and water-based aluminum silver paste to mixture C, and disperse at 1500rpm for 20 minutes to obt...

Embodiment 2

[0110] A kind of water-based metallic baking varnish comprises the following components according to mass percentage:

[0111] KT6031: 30%, WX194: 40%, CYMEL303: 3%, CYMEL325: 5%, butyl glycol ether: 8%, DMEA: 0.6%, tego wet 4100: 0.3%, BYK 028: 0.3%, OS6050: 0.8%, BD7744: 0.2%, deionized water: 11.8%.

[0112]The preparation steps of water-based metal baking paint are as follows:

[0113] (1) According to the above mass fraction, first mix WX194 with deionized water to obtain mixture A, then pre-mix ethylene glycol butyl ether, BYK028, tego wet4100, DMEA, and BD7744 to obtain mixture B. At 400-500rpm, the mixture Add B slowly to mixture A;

[0114] (2) After the addition of mixture B, slowly add KT6031, CYMEL303, and CYMEL325, and disperse at 1000 rpm for 20 minutes after the addition to obtain mixture C;

[0115] (3) Finally, add OS6050 to the mixture C and disperse at 1500rpm for 20 minutes to obtain a water-based metallic baking paint.

[0116] The water-based metal ba...

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Abstract

The invention provides a waterborne metal baking varnish. The metal baking varnish comprises, in parts by weight, 10-40 parts of a waterborne acrylic resin, 10-30 parts of a waterborne polyester, 5-20parts -of an amino resin, 5-15 parts of a co-solvent, 0.2-0.5 part of a wetting agent, 0.2-0.4 part of an anti-foaming agent, 0.3-1.5 parts of a thickener, 0.05-0.3 part of a catalyst, 0.1-0.5 part of a pH adjuster, 0-4 parts of an aluminum silver paste, and water. Compared with an oil paint, the provided waterborne metal baking varnish is more environment-friendly and yellowing-resistant, and has relatively strong hardness, water resistance, chemical resistance and other properties. Compared with an ordinary waterborne metal baking varnish, the waterborne metal baking varnish has a lower baking temperature, and has relatively strong tolerance at baking temperature and baking time. At the same time, a paint film has high hardness, strong flexibility, and strong adhesion and salt fog resistance, operability and controllability in use are greatly improved, and popularization and use are easier.

Description

technical field [0001] The invention belongs to the technical field of water-based metal baking varnish, and specifically relates to a water-based metal baking varnish and its preparation method and application, in particular to a water-based metal baking varnish with both flexibility and hardness and low-temperature reactivity, and its preparation method and application. Background technique [0002] Paint is coated on the surface of the object to be protected or decorated, and can form a continuous solid film firmly attached to the object to be coated, also known as paint film or coating, usually based on resin, or oil, or emulsion, adding Or do not add pigments, fillers, add corresponding additives, and use organic solvents or water to prepare viscous liquids. There are many types of coatings, which are divided according to the form of the product, mainly divided into: solvent-based coatings, water-based coatings, powder-based coatings, high-solid coatings, metallic coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D167/02C09D161/32C09D7/61
CPCC08K2003/0806C08K2003/0812C08L2201/08C08L2205/025C08L2205/035C09D133/04C09D167/02C09D7/61C08L67/02C08L61/32C08K13/02C08K3/08C08L33/04
Inventor 涂志江黄银平彭成镜
Owner 深圳市雷巴环保材料有限公司
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