Ultra-gasoline resistant aqueous varnish and preparation method thereof

A gasoline and water-resistant technology, applied in the field of coatings, can solve problems such as unsatisfactory drying speed and antibacterial properties, and achieve the effects of improving scratch resistance, improving wettability and high hardness

Active Publication Date: 2019-05-14
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is the basic formula of water-based varnish, without the use of additives such as drier and anti-fungal agent, and the drying speed and antibacterial properties are not ideal

Method used

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  • Ultra-gasoline resistant aqueous varnish and preparation method thereof
  • Ultra-gasoline resistant aqueous varnish and preparation method thereof
  • Ultra-gasoline resistant aqueous varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0049] A super gasoline-resistant water-based varnish, which is composed of a component A resin paint and a component B curing agent in a weight ratio of 3:1. The specific formula is shown in Table 1. The preparation method of water-based varnish specifically comprises the following steps:

[0050] (1) Add the hydroxyacrylic acid emulsion and the hydroxypolyurethane dispersion into the dispersion tank in parts by weight, stir evenly, then add the defoamer, solvent A, stir at a low speed for 5-10min, moisten the leveling agent, water-based drier, Bactericide and light stabilizer, stir at medium speed for 10-15 minutes, adjust the viscosity to 30-40s, filter to obtain component A resin paint;

[0051] (2) Add the curing agent to the solvent B in parts by weight, and stir evenly to obtain the curing agent of component B;

[0052] (3) Mix the resin paint of component A and the curing agent of component B in a weight ratio of 3:1 to obtain the water-based varnish.

Embodiment 1

[0053] The coating of Example 1 and the commercially available water-based varnish were constructed simultaneously on the ABS of spray-coated paint (surface dry), and the test results of paint film properties are shown in Table 2.

[0054] Table 2 Paint film performance test results

[0055]

[0056] From Table 2, we can see that the water-based varnish of the present invention has excellent gasoline resistance, and has excellent properties such as fast drying, long activation time, and good gloss.

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Abstract

The invention relates to ultra-gasoline resistant aqueous varnish and a preparation method thereof. The aqueous varnish comprises a component A resin paint and a component B curing agent in a weight ratio of 3: 1, wherein the component A resin paint comprises 45-65 parts of aqueous hydroxyl acrylic emulsions, 15-30 parts of aqueous hydroxyl polyurethane dispersions, 0.2-0.5 part of a defoaming agent, 0.2-1.0 part of a wetting leveling agent, 0.2-0.6 part of an aqueous drier, 0.1-0.3 part of a bactericide, 1-3 parts of light stabilizers and 5-15 parts of solvents A; and the component B curing agent comprises 55-75 parts of curing agents and 10-30 parts of solvents B. Compared with the prior art, the preparation method is simple, raw materials are widely selected, and the prepared aqueous varnish has excellent chemical resistance, especially gasoline resistance, effectively improves surface drying speed and activation period, has good interlayer adhesion, and has the advantages of fast hardness establishment, high fullness and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a super gasoline-resistant water-based varnish and a preparation method thereof. Background technique [0002] The varnish, due to its transparency, imparts some additional excellent properties to the coating. Especially for automotive exteriors, varnishes with high gloss, fullness, weather resistance and chemical resistance are often used to give people visual and sensory aesthetics, and to provide long-term and effective protection for the car body. Traditional varnishes use a large amount of solvents, causing VOC (volatile organic compounds) emissions to pollute the environment. At the same time, the solvents in the construction process will also cause great harm to the body of the workers. [0003] How to effectively reduce VOC is the requirement of current environmental protection laws and regulations, and also conforms to the trend of the development of environmentally fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04
Inventor 朱忠敏叶小明胡吉霞
Owner DONGLAI COATING TECH SHANGHAI
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