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New type electrical conductive paint and preparation method

A new type of conductive coating technology, applied in conductive coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of insufficiently stable performance of conductive coatings, oxidation reaction conductivity, poor dispersion stability, etc., and achieve good electrical and thermal stability. , The effect of good coating flatness and lasting electrical conductivity

Inactive Publication Date: 2005-10-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To prepare a conductive coating with good performance, the added conductive powder should have good conductivity, high fineness, good compatibility with base materials (various resins, emulsions, etc.), excellent thermal stability and weather resistance, and low cost and other characteristics, but the existing technologies are difficult to meet the above conditions at the same time
For example, metal-based conductive coatings have good electrical conductivity, but they are not stable enough in the air, and are prone to oxidation reactions, resulting in a decrease in electrical conductivity, and are more expensive; while carbon-based conductive coatings are cheap, but have poor dispersion stability, dark colors and relatively high prices. Single, not conducive to the color of the paint, not suitable for paint systems that require light colors
The conductive effect of metal oxide coatings is not good, and the performance of conductive coatings prepared by composite conductive fillers is not stable enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The basic formulation of the conductive coating is:

[0039] Raw material name dosage / g

[0040] Bisphenol A type epoxy resin 40

[0041] Diluent (butyl ester:xylene=1:1) 8

[0042] Titanium mixed valence oxide conductive powder 45

[0043] n-Butyl titanate coupling agent 4

[0044] BYK 4010 Dispersant 1.5

[0045] Tego A-900 defoamer 1.5

[0046] Epoxy Curing Agent 8

[0047] Stir and disperse the above raw materials according to the proportion, and prepare the finished conductive coating. When the addition amount of the conductive powder is 45wt%, the resistivity of the paint film is 0.38Ωcm.

[0048] Other conditions remain unchanged, when the conductive powder is tungsten mixed valence oxide, the resistivity of the paint film is 0.42Ω·cm.

Embodiment 2

[0050] The basic formulation of the conductive coating is:

[0051] Raw material name dosage / g

[0052] Alkyd resin 32

[0053] Diluent (toluene: dibutyl ester = 1: 1) 6.4

[0054] Titanium mixed valence oxide conductive powder 55

[0055] n-Butyl titanate coupling agent 4

[0056] Byk-220s wetting and dispersing agent 1.6

[0057] EFKA-3777 leveling agent 1.0

[0058] Curing agent 6.4

[0059] Stir and disperse according to the above-mentioned raw materials according to the proportion, and prepare the finished conductive coating. When the addition amount of the conductive powder is 55wt%, the resistivity of the paint film is 0.41Ω·cm.

[0060] Other conditions remain unchanged, when the conductive powder is tungsten mixed valence oxide, the resistivity of the paint film is 0.48Ω·cm.

Embodiment 3

[0062] The basic formula of conductive coating is:

[0063] Raw material name dosage / g

[0064] One-component acrylic resin 28

[0065] Diluent (n-butyl ester: xylene = 1:1) 5.6

[0066] Titanium mixed valence oxide conductive powder 60

[0067] n-Butyl titanate coupling agent 4

[0068] BYK110 wetting and dispersing additive 1.8

[0069] Byk-A530 0.6

[0070] Stir and disperse according to the above-mentioned raw materials according to the proportion, and prepare the finished conductive coating. When the addition amount of the conductive powder is 60wt%, the resistivity of the paint film is 0.45Ω·cm.

[0071] Other conditions remain unchanged, when the conductive powder is tungsten mixed valence oxide, the resistivity of the paint film is 0.51Ω·cm.

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Abstract

The present invention relates to a new type conductive paint and its preparation method. Said conductive paint is formed from film-forming material, conductive powder, coupling agent, diluent and adjuvant. The resistivity of paint film formed by utilizing said conductive paint is in the range of 0.38-0.65 ohm.cm.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a novel conductive paint and a preparation method thereof. Background technique [0002] Conductive coatings refer to a class of functional coatings that are coated on non-conductive substrates to enable them to conduct current and eliminate accumulated static charges. Compared with methods such as vacuum sputtering and plastic electroplating to obtain a conductive layer, conductive coatings have the advantages of convenient construction, simple equipment, low cost, and a wide range of applications. The development of conductive coatings began in the 1940s. Since this type of coating has broad application prospects in the fields of electronics, construction, and aerospace, it has become one of the hot spots in the field of coating research in recent years. [0003] At present, conductive coatings at home and abroad are mainly divided into additive conductiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/12
Inventor 吴介达刘金库
Owner TONGJI UNIV
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