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Automotive water-borne one-component white paint with excellent comprehensive property and preparation method thereof

A water-based, white paint technology, applied in coatings, polyurea/polyurethane coatings, etc., which can solve problems such as uneven performance

Active Publication Date: 2016-08-17
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, there are many manufacturers selling water-based one-component white paint on the market, and the performance parameters are not uniform, but basically no brand can meet all the above requirements at the same time

Method used

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  • Automotive water-borne one-component white paint with excellent comprehensive property and preparation method thereof
  • Automotive water-borne one-component white paint with excellent comprehensive property and preparation method thereof
  • Automotive water-borne one-component white paint with excellent comprehensive property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Preparation of water-based white paste

[0040] The formula of water-based white pulp is shown in Table 1, and its preparation process is as follows: ①Put deionized water and different kinds of co-solvents into the stirring tank, and then add BYK-190, FX600, TEGO-500, TEGO- 901w, after being dispersed evenly, continue to add RD and R-706, and stir for 10-15min at a linear speed of 8-9m / s; If the thickness is less than 5μm, white pulp can be obtained.

[0041] 2. Preparation of water-based one-component white paint

[0042] Put the resin 2606 into the stirring tank, add 2-amino-2-methyl-1-propanol while stirring, after neutralizing for 5 minutes, slowly add the ground white pulp, TEGO-830, TEGO-240, FX1070, add After finishing all the materials, stir for 30 minutes, filter and discharge the materials, and obtain the water-based one-component white paint.

[0043] 3. Preparation of water-based one-component white paint film

[0044] Use deionized water to adjust th...

Embodiment 2

[0055] Table 3 is the feeding formula for preparing water-based white paint by changing the type of dispersant in Example 2 while keeping other materials unchanged, and the formula numbers are 5, 6, 7 and 8 in sequence. Prepare 4 kinds of white paints numbered 5-8 shown in Table 3 according to the technical process of preparing water-based one-component white paint in Example 1, and prepare the paint film according to the technical process of preparing white paint film in Example 1.

[0056] The properties of the waterborne one-component white paints prepared by formula 5, formula 6, formula 7 and formula 8 are shown in Table 4. It can be seen from the table that when the dispersant combination of (BYK-190+FX600) or (BYK-194N+OROTAN+BYK-151) is used in the formula, the water-based one-component white paint has excellent storage stability, freeze-thaw Stability, hiding power, adhesion, flexibility, water resistance, chemical resistance and weather resistance; when the dispersan...

Embodiment 3

[0064] Table 5 is the feeding formula for preparing the water-based white paint by changing the ratio of the dispersant in Example 3 while keeping other materials unchanged, and the formula numbers are 9, 10, 11 and 12 in sequence. Prepare 4 kinds of white paints that are numbered 9 to 12 shown in Table 5 according to the technological process of preparing water-based one-component white paint in Example 1, and prepare paint films according to the technological process of preparing white paint films in Example 1.

[0065] The properties of the waterborne one-component white paints prepared by formula 9, formula 10, formula 11 and formula 12 are shown in Table 6. It can be seen from the table that when the ratio of dispersant BYK-190 and FX600 is 0.5:4.5, the water-based white paint has excellent hiding power, adhesion, flexibility, chemical resistance and weather resistance, but its storage stability, freeze-thaw The stability and water resistance are unqualified; when the rat...

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Abstract

The invention discloses automotive water-borne one-component white paint with an excellent comprehensive property and a preparation method thereof. The water-borne one-component white paint is composed of resin, an amine neutralizer, white pulp and auxiliaries, wherein the white pulp is composed of deionized water, cosolvent, auxiliaries and titanium dioxide. After material feeding is completed according to a formula of the white pulp, high speed dispersion is conducted on the materials for 10 min to 15 min, then the dispersed materials enter a sand mill to be milled till the fineness is smaller than 5 micrometers, and the white pulp is obtained; material feeding is conducted according to a formula of the white paint in sequence, stirring is conducted to be uniform, and the water-borne white paint is obtained. The water-borne one-component white paint has the advantages of being excellent in storage stability, freeze-thaw stability, covering capacity, water resistance, chemical resistance, weather resistance, application property, anti-sagging property and drying speed.

Description

technical field [0001] The invention relates to the technical field of automobile coatings, in particular to a water-based one-component white paint with excellent comprehensive performance and a preparation method thereof. Background technique [0002] At present, my country's automotive coatings are still mainly solvent-based, and a large number of volatile organic compounds (VOCs) have caused serious pollution to the ecological environment during the coating process, and have also brought great harm to human health. With the improvement of people's awareness of environmental protection, governments of various countries have introduced a large number of relevant regulations to limit the emission of VOCs. In order to keep up with the development of the times, automotive coatings are changing to be environmentally friendly. Environmentally friendly coatings include water-based coatings, powder coatings, UV-curable coatings and high-solid coatings, and water-based coatings ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
CPCC08L2205/035C09D7/61C09D7/63C09D7/65C09D175/04C08L71/00C08K13/02C08K5/05C08K5/17C08K2003/2241
Inventor 张育波李耀明黄劼阮伟明伍祺卓冯兆华王炼石
Owner GUANGDONG YATU CHEM
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