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Ultra-high-performance water-based mirror surface two-component varnish and preparation method thereof

An ultra-high performance, two-component technology, used in coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problem of high hardness and fullness, paint film gloss, fullness and hardness are not ideal, gloss Advanced problems, to achieve high gloss fullness, high fullness, good water resistance

Inactive Publication Date: 2021-03-26
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent "CN109749611A" discloses a super-gasoline-resistant water-based varnish and its preparation method. The varnish contains a component A resin paint and a B-component curing agent, wherein the A component is dispersed by water-based hydroxyl acrylic emulsion and water-based hydroxyl polyurethane Body, defoamer, wetting agent, drier, etc., component B is composed of curing agent and solvent. The paint film has the advantages of good adhesion, high gloss (95°), high hardness and fullness. It is a water-based base paint formula, and the gloss, fullness and hardness of the paint film are still not ideal

Method used

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  • Ultra-high-performance water-based mirror surface two-component varnish and preparation method thereof
  • Ultra-high-performance water-based mirror surface two-component varnish and preparation method thereof
  • Ultra-high-performance water-based mirror surface two-component varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A super high performance aqueous mirror double-component varnish, preparation method:

[0023] Preparation of a component:

[0024] (1) Initiate aqueous dispersion resin, deionized water, deionized water, stirred at 300-600 rpm, stirred for 5-10 minutes;

[0025] (2) Add a wetting agent, a leveling agent, an ultraviolet absorber, an antifoaming agent, 300-600 rpm, and stir for 5-10 minutes;

[0026] (3) The formation of triphenyl, DPNB, film forming auxiliary agent was added to (2), and stirred at 300-600 rpm, stirred for 5-10 minutes to obtain a component.

[0027] B component preparation:

[0028] (4) In the sealed container, it is placed in the closed container, respectively, the amount of water dispersion type polyisocyanate, aqueous dispersion type modified isopolyoids, propylene glycol dikyl acetate and dehydrated agent, 300-600 rpm, stirred after 20min The B component, wherein the preparation method of the polyisocyanate in the B component is: in three flasks equippe...

Embodiment 2

[0036] Example 2 is an experiment in the case of varying acrylic acid and polyurethane resin, and the formulation number is 4 #, 5 #, 6 #, 7 # (Table 3), according to the preparation process of Example 1. Preparation of color lacquer and its process to prepare a paint film. Table 4 is the paint film performance detection of Example 2, and the lacquer film specular effect of the curing agent system is very good, the gloss and fullness of the fullness are relatively high, 5 # and 6 # square water resistant, buttone resistant performance, 4 #Electronics with 7 # squares. This is because the hydroxy polyurethane dispersion is combined with a hydroxyacrylate dispersion. The ratio of the two is 1: 2.5-4, and the performance advantage is obvious. In the case of satisfying high gloss, the flexibility, Narotyne The performance of ketone, water resistant, etc., in line with the application of bus passenger cars and rail transportation facilities.

[0037] Table 3 Example 2 Details of specif...

Embodiment 3

[0042]Example 3 is an experiment in the case where other materials are not changed, and the formulation is 8 #, 9 #, 10 #, 11 # (Table 5), prepared according to the preparation process of Example 1. Paint film is prepared in the process of paint and its process. Table 6 is the performance detection of the paint film in Example 3, known from the table, under the fixation of the resin system, the species of the curing agent on the gloss, fullness, water resistant and Narbone test of the paint film, and the formulation The modified isophorone polyisocyanate uses a special process, which is grafted, involved in acrylic acid and polyurethane, which plays an important role in the performance of the paint film, combined with polyisocyanate, and achieves gloss to reach 97. 60 °), completely realize the mirror effect, the fullness can reach 97 or more, hardness Implement H-class; and use conventional isocyanate or only polyisocyanate or modified isoplastin polyisocyanate paint film propert...

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Abstract

The invention relates to the technical field of coatings, in particular to an ultrahigh-performance water-based mirror surface two-component varnish and a preparation method thereof. The varnish is composed of a component A and a component B, the component A is composed of a resin dispersion, trimethylbenzene, dipropylene glycol butyl ether, a wetting agent and the like, and the component B is composed of polyisocyanate and modified isophorone polyisocyanate. A prepared paint film has mirror surface leveling, high fullness and high film thickness requirements, is not prone to prickly heat, hasexcellent water resistance, high temperature resistance, weather resistance, acid resistance, alkali resistance, gasoline resistance and engine oil resistance, has very good physical performance suchas high gloss, hardness and toughness, has very good adhesive force with a lower-layer paint film, and has very good butanone wiping resistance.

Description

Technical field [0001] The present invention relates to the field of coating materials, and more particularly to ultra-high performance aqueous mirror two-component varnishes and preparation methods thereof. Background technique [0002] At present, with the gradual improvement of people's quality of life, environmental protection regulations are also increasingly strict. Various environmental regulations have strict restrictions on the emissions of volatile organic compounds (VOCs). There is less solvent content in aqueous varnish, and the performance is basically satisfied with customer needs, and low VOC environmentally friendly and water-based varnish. [0003] China Patent "CN109749611A" discloses a water-resistant aqueous varnish and a preparation method thereof, which comprises a resin lacquer and a component curing agent in which the Aquarium is dispersed by aqueous hydroxyacry acid emulsion, aqueous hydroxy polyurethane Composition of body, defoamer, wetting agent, drill...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/08C08G18/79C08G18/66C08G18/62C08G18/64C08G18/48C08G18/32
CPCC08G18/3206C08G18/4081C08G18/4854C08G18/6216C08G18/6415C08G18/6677C08G18/791C08G18/792C09D5/08C09D175/04
Inventor 江瀚陈忠刘冬立严明辉李新冯兆华冯兆均
Owner GUANGDONG YATU CHEM
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