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Water-based light-color static conductive primer and preparation method thereof

A static-conducting, light-colored technology, used in primers, conductive paints, coatings, etc., to solve problems such as poor adhesion

Active Publication Date: 2020-07-10
江苏永阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor adhesion of water-based static conductive primer on non-polar plastic substrates such as PE and PP, the present invention provides a water-based light-colored static conductive primer and a preparation method thereof, which can meet the requirements of adhesion and mechanical properties. And the base coat is light in color and will not affect the color of the top coat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A water-based light-color electrostatic conductive primer, comprising the following components by weight: 20kg of water-based acrylic emulsion, 30kg of vinyl chloride-acrylic acid core-shell copolymer emulsion, 4kg of conductive carbon black, 10kg of titanium dioxide, 0.2kg of leveling aid, and defoamer 0.1kg, 10kg of water, wherein the Tg of the water-based acrylic emulsion is 55°C. The specific preparation method is as follows:

[0023] (1) Take a vinyl chloride-acrylic acid core-shell copolymer emulsion with a formula amount of 1 / 3, add conductive fillers to it, stir and mix evenly, and then grind and disperse. When the fineness of the mixed solution is less than 20 microns, stop grinding to obtain a conductive paste Material A;

[0024] (2) Take the vinyl chloride-acrylic acid core-shell copolymer emulsion with a formula amount of 2 / 3, add titanium dioxide to it, stir and mix evenly, then grind and disperse, when the fineness of the mixed solution is less than 20 m...

Embodiment 2

[0028] The difference from Example 1 is that the water-based light-colored electrostatic conductive primer includes the following weight components: 30 kg of water-based acrylic emulsion, 20 kg of vinyl chloride-acrylic acid core-shell copolymer emulsion, 10 kg of conductive carbon black, 20 kg of titanium dioxide, and 0.6 kg of leveling aid kg, 0.1 kg of defoamer, and 30 kg of water, wherein the Tg of the water-based acrylic emulsion is 45°C.

[0029] Use the prepared water-based light-colored electrostatic conductive primer to spray the model, and carry out the coating performance test, specifically as follows: on the surface of the PP model, when spraying the primer film thickness of 20 microns, the adhesion of the paint film (cross-cut method) is 1 grade, Surface resistance 10 5 Europe, the color of the paint film is light gray, and the L value is 40. On the surface of the PE model, when the primer film is sprayed with a thickness of 20 microns, the adhesion of the paint ...

Embodiment 3

[0031] The difference from Example 1 is that the water-based light-colored electrostatic conductive primer includes the following weight components: 40 kg of water-based acrylic emulsion, 15 kg of vinyl chloride-acrylic acid core-shell copolymer emulsion, 6 kg of conductive carbon black, 15 kg of titanium dioxide, and 1 kg of leveling aid , 0.3kg of defoamer, 20kg of water, wherein the Tg of the water-based acrylic emulsion is 50°C.

[0032] Use the prepared water-based light-colored electrostatic conductive primer to spray the model, and carry out the coating performance test, specifically as follows: on the surface of the PP model, when spraying the primer film thickness of 20 microns, the adhesion of the paint film (cross-cut method) is 1 grade, Surface resistance 10 7 Europe, the color of the paint film is light gray, and the L value is 43. On the surface of the PE model, when the primer film is sprayed with a thickness of 20 microns, the adhesion of the paint film (cross...

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Abstract

The invention discloses a water-based light-color static conductive primer, which comprises the following components by weight: 20-40 parts of a water-based acrylic emulsion, 15-30 parts of a vinyl chloride-acrylic core-shell copolymer emulsion, 4-10 parts of conductive filler, 10-20 parts of titanium dioxide, 0.2-1 part of a leveling agent, 0.1-0.5 part of a defoaming agent and 10-30 parts of water. The water-based acrylic emulsion is an acrylate emulsion, the glass transition temperature (Tg) of the water-based acrylic emulsion is lower than 60DEG C, and the vinyl chloride-acrylic core-shellcopolymer emulsion is a block copolymer emulsion with vinyl chloride as a core and acrylic acid as a shell, so that the adhesive force of the coating on PE and PP substrates is improved. According tothe invention, the defects of poor adhesion and poor mechanical properties of a water-based acrylic system on PE and PP substrates are overcome, the high-performance water-based light-color static conductive primer applied to the PE and PP substrates is successfully developed, and the problem of difficult adhesion of water-based paint to the PE and PP substrates is fundamentally solved.

Description

technical field [0001] The invention belongs to the technical field of conductive coatings, and relates to a water-based light-color static conductive primer applied to plastic substrates such as PE and PP and a preparation method thereof. Background technique [0002] Electrostatic spraying has the advantages of high paint utilization rate, good finishing quality, high coating efficiency, and friendly construction environment. It has been widely used in automobile, furniture and other industries. However, electrostatic spraying requires the substrate to have a certain conductivity in order to realize the potential difference, which limits its application on plastic parts. [0003] In order to solve this problem, a layer of conductive primer is first coated on the plastic substrate to achieve the purpose of static electricity. In order to ensure the adhesion and mechanical properties of the coating, high requirements are put forward for the adhesion, mechanical properties a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D151/00C09D5/24C09D7/61
CPCC09D133/04C09D151/003C09D5/24C09D5/002C09D7/61C08K2201/001C08K2003/2241C08L51/003C08K3/04C08K3/22C08L33/04
Inventor 陆勇鹏缪文明
Owner 江苏永阳新材料科技有限公司
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