High-performance water-based acrylic polyurethane coating and preparation method thereof

An acrylic polyurethane and water-based polyurethane technology, applied in the field of coatings, can solve the problems of single application scenario, unstable product performance, complex preparation process, etc., achieve excellent adhesion performance, improve crosslinking density and coating film drying speed, stable performance Effect

Active Publication Date: 2022-04-29
郑州中科新兴产业技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current technical problems of complicated coating preparation process, unstable product performance, and single application scenarios, the present invention proposes a high-performance waterborne acrylic polyurethane coating and its preparation method. The prepared waterborne acrylic polyurethane coating has excellent adhesion, water resistance, Hardness, drying speed, flexibility, salt spray resistance, impact resistance, gloss and other properties, the comprehensive performance can reach and exceed some solvent-based coatings, and it has the characteristics of convenient construction, stable performance, and simple adjustment for different application scenarios

Method used

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  • High-performance water-based acrylic polyurethane coating and preparation method thereof
  • High-performance water-based acrylic polyurethane coating and preparation method thereof
  • High-performance water-based acrylic polyurethane coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add soybean oil acid, epoxy resin E-20, and tetrabutylammonium bromide to the reaction kettle, and feed N 2 , start stirring at 150r / min, raise the temperature to 130°C and react for 3h, until the acid value in the system is lower than 5 to obtain epoxy ester; then slowly cool down to 120°C, add propylene glycol methyl ether and n-butanol, and then add styrene, methacrylic acid Mix methyl ester, butyl acrylate, acrylic acid and benzoyl peroxide evenly, and pump them into the reaction kettle at a constant speed with a peristaltic pump. After about 3 hours of pumping, react at 120°C for a further 2 hours: then cool down to 80°C and add triethylamine to neutralize After 30 minutes, deionized water was added under high-speed stirring at 3000 r / min to prepare soy-oleic acid-modified epoxy-acrylic resin.

[0033] Wherein the amount of each raw material used in the step (1) is:

[0034] soybean oil 29 copies Epoxy resin E-20 60 copies tetrabutylamm...

Embodiment 2

[0042] (1) Add soybean oil acid, epoxy resin E-12, and tetrabutylammonium bromide to the reaction kettle, and feed N 2 , start stirring at 150r / min, raise the temperature to 130°C and react for 3h, until the acid value in the system is lower than 5 to obtain epoxy ester; then slowly cool down to 120°C, add propylene glycol methyl ether and n-butanol, and then add styrene, methacrylic acid Mix methyl ester, butyl acrylate, acrylamide, acrylic acid and benzoyl peroxide evenly, and pump them into the reaction kettle at a constant speed with a peristaltic pump for about 3 hours, then react at 120°C for 2 hours; then cool down to 80°C and add triethyl ether The amine was neutralized for 30 minutes, and deionized water was added under high-speed stirring at 3000 r / min to prepare soy-oleic acid-modified epoxy-acrylic resin.

[0043] Wherein the amount of each raw material used in the step (1) is:

[0044] soybean oil 29 copies Epoxy resin E-12 96 copies tetra...

Embodiment 3

[0052] (1) Dehydrated ricinoleic acid, epoxy resin E-20, and tetrabutylammonium bromide are added to the reactor, and N 2 , start stirring at 150r / min, raise the temperature to 130°C and react for 3h, until the acid value in the system is lower than 5 to obtain epoxy ester; then slowly cool down to 120°C, add propylene glycol methyl ether and n-butanol, and then add styrene, methacrylic acid Mix methyl ester, butyl acrylate, hydroxyethyl acrylate, acrylic acid and benzoyl peroxide evenly, and pump them into the reaction kettle at a constant speed with a peristaltic pump for about 3 hours, then react at 120°C for 2 hours; then cool down to 80°C and add Triethylamine was neutralized for 30 minutes, and deionized water was added under high-speed stirring at 3000 r / min to prepare dehydrated ricinoleic acid modified epoxy-acrylic resin.

[0053] Wherein the amount of each raw material used in the step (1) is:

[0054] dehydrated ricinoleic acid 28 copies Epoxy res...

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Abstract

The invention provides a high-performance water-based acrylic polyurethane coating and a preparation method thereof, which are used for solving the technical problems of complex coating preparation process, unstable product performance and single application scene. The high-performance waterborne acrylic polyurethane coating is prepared from the following raw materials in parts by mass: 200 to 300 parts of vegetable oleic acid modified epoxy-acrylic resin, 50 to 150 parts of closed waterborne polyurethane, 0.25 to 1 part of a de-foaming agent, 0.25 to 2.5 parts of a dispersing agent and 50 to 150 parts of pigment filler. The high-performance waterborne acrylic polyurethane coating disclosed by the invention is low in VOC content, high in paint film crosslinking density, stable in storage at normal temperature, excellent in water resistance, adhesive force, hardness, toughness, drying speed, salt fog resistance, impact resistance, glossiness and the like, has the characteristics of convenience in construction, stable performance and simplicity and adjustability aiming at different application scenes, and has wide application prospects. The paint can be widely applied to the field of industrial stoving paints.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a high-performance water-based acrylic polyurethane coating and a preparation method thereof. Background technique [0002] In recent years, with the continuous enhancement of environmental protection awareness, the country has higher and higher requirements for environmental protection. The coating industry is developing towards low pollution. Water-based coatings are increasingly emerging. Water-based coatings have gradually replaced traditional solvent-based coatings in the field of industrial coatings. [0003] The promotion and use of water-based coatings can save a lot of resources, reduce air pollution, improve the working environment, etc., but in some fields, the performance of water-based coatings prepared from a single variety of resin cannot compete with solvent-based coatings, and there are low adhesion and poor water resistance. , poor weather resistance, poor flex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D175/08C09D5/08C08F290/06C08F212/08C08F220/14C08F220/18C08F220/06
CPCC09D151/08C09D5/08C08F290/064C08L2205/04C08L75/08C08F212/08C08F220/14C08F220/1804C08F220/06
Inventor 张延强吴琼袁东明李玉
Owner 郑州中科新兴产业技术研究院
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