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Conductive coating

A technology of conductive coatings and semiconductors, applied in conductive coatings, polyester coatings, coatings, etc., can solve the problems of high price, not bright, limited use range, etc., to achieve extended service life, good safety, and high cost performance. Effect

Inactive Publication Date: 2014-06-11
苏州德亮材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The color of conductive coatings is affected by the conductive materials inside, such as: silver (Ag) and conductive carbon black (carbon black), mostly metallic and graphite dark black, the color is single, monotonous, and not bright
[0006] In order to achieve sufficient electrostatic and electromagnetic wave protection effects, the conductive materials used in conductive coatings need materials with good conductivity, generally precious metals, whose price is high, which will increase the cost of conductive coatings, making it impossible to use a large number of conductive coatings, resulting in Restrictions on the scope of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A conductive coating is composed of 20% by weight of water-based polyester resin, 15% of titanium dioxide powder, 15% of zinc sulfide semiconductor nano-powder (powder resistivity ≤400 Ω·cm, and an average particle size of 170nm), 15% of carbon dioxide 8% of silicon powder, 15% of additives (9% of BYK-333 wax additive, 3% of modified urea solution and 3% of BYK-151 dispersant) and 27% of water were added to the reactor and mixed evenly, and then grinded again. available.

Embodiment 2

[0029] A conductive coating is composed of 17% of water-based polyester resin, 15% of titanium dioxide powder, 15% of zinc sulfide semiconductor nano-powder (powder resistivity ≤400 Ω·cm, and an average particle size of 170nm), 15% by weight, 8% of silicon powder, 15% of additives (9% of BYK-333 wax additive, 3% of modified urea solution and 3% of BYK-151 dispersant) and 30% of water were added to the reactor and mixed evenly, and then grinded again. available.

Embodiment 3

[0031] A conductive coating is composed of 20% by weight of water-based polyester resin, 15% of titanium dioxide powder, 15% of zinc sulfide semiconductor nano-powder (powder resistivity ≤400 Ω·cm, and an average particle size of 170nm), 15% of carbon dioxide 5% of silicon powder, 15% of additives (9% of BYK-333 wax additive, 3% of modified urea solution and 3% of BYK-151 dispersant) and 30% of water were added to the reactor and mixed evenly, and then grinded again. available.

[0032] The conductive paint prepared in the embodiment of the present invention has been tested and found that the adhesion (grade 0) is 100 / 100, the surface dry time (60°C) is 10min, and the volume resistivity is 3×10 -3 Ω·cm, surface resistivity 0.2Ω / cm 2 .

[0033] The conductive coating provided by the present invention is a functional fluid coating suitable for electronic products with engineering plastics as the shell, which can be easily sprayed or brushed on the surfaces of plastic parts of ...

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Abstract

The invention belongs to the field of electronic material, and in particular relates to a conductive coating mainly prepared by blending the components by the weight percentage: 15-20% of a waterborne polyester resin, 10-15% of a titanium dioxide powder, 10-15% of a zinc sulfide semiconductor nano-powder, 5-8% of a silicon dioxide powder, 9-15% of an additive, and 20-30% of water. The additive is composed of a wax auxiliary agent, a modified urea solution and a dispersing agent. The conductive coating has the characteristics of environmental protection and good electromagnetic shielding effect.

Description

technical field [0001] The invention belongs to the field of electronic materials, and in particular relates to a conductive material. Background technique [0002] With the rapid development of the electronics industry, electronic products such as various household appliances, office computers, instruments and equipment have been widely popularized and applied. However, while their work brings great convenience to people, it also releases a large amount of electromagnetic radiation, which endangers people's health. In addition, electromagnetic radiation is also extremely harmful to electronic products themselves. On the one hand, plastic is widely used as the casing of electronic products due to its advantages of low cost, light weight and easy processing, but it is almost completely transparent to electromagnetic waves and has no shielding effect on electromagnetic interference. On the other hand, the power of the micro-current control signal inside the electronic produc...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D7/12C09D5/24
Inventor 吴宏图曹亮方小明
Owner 苏州德亮材料科技有限公司
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