Electrically-conducting paint based on TiB2 and its preparation method and application

A technology of conductive coatings and conductive powders, applied in conductive coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of high resistance of metal compounds, poor electrical properties of carbon-based fillers, poor heat and humidity resistance, etc., to achieve electrical conductivity. Excellent, strong thermal conductivity, excellent electrical conductivity

Inactive Publication Date: 2008-03-26
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For additive-type conductive coatings, carbon-based fillers have poor electrical properties, poor heat and humidity resistance, and the coating is soft and not wear-resistant; metal fillers (gold and silver are expensive) are easy to

Method used

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  • Electrically-conducting paint based on TiB2 and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] raw material name

[0040] Stir and disperse the above raw materials in proportion to prepare conductive coating. If the conductive powder is pure TiB 2 (purity greater than 98% wt, particle size 2 ~ 10μm), then the conductivity is 0.5Ω.cm, if the conductive powder is TiB 2 : graphite: acetylene black = 1: 0.2: 0.1 weight ratio, then the conductivity is 0.6Ω.cm. The coating (coating thickness is about 80 μm) is coated with A3 carbon steel for about 1000 hours, and for magnesium (magnesium alloy AZ91D) for about 280 hours. Alloy) has a neutral salt spray resistance time of about 800h, and coated copper (copper alloy) has a neutral salt spray resistance time of about 880h. As shown in Figure 1, TiB used in the present invention 2 scanning electron microscope photographs.

Embodiment 2

[0042] Difference with embodiment 1 is that the basic formula of this conductive paint is:

[0043] raw material name

[0044] Stir and disperse the above raw materials in proportion to prepare conductive coating. If the conductive powder is pure TiB 2 , the conductivity is 0.5Ω.cm, if the conductive powder uses TiB 2 : graphite: carbon black=1:0.2:0.1 weight ratio, then the electrical conductivity is 1.0Ω.cm. The coating (coating thickness is about 80 μm) is coated with A3 carbon steel for about 1000 hours, and for magnesium (magnesium alloy AZ91D) for about 280 hours. Alloy) has a neutral salt spray resistance time of about 800h, and coated copper (copper alloy) has a neutral salt spray resistance time of about 880h.

Embodiment 3

[0046] Difference with embodiment 1 is that the basic formula of this conductive paint is:

[0047] raw material name

[0048] The difference from Example 1 is that the above raw materials are stirred and dispersed in proportion to prepare a conductive coating. The curing temperature is 300-350°C, and the curing time is 2-5 hours. If the conductive powder is pure TiB 2 , the conductivity is 0.3Ω.cm, if the conductive powder uses TiB 2 : graphite: carbon black=1:0.2:0.1 weight ratio, then the electrical conductivity is 1.1Ω.cm. The coating (coating thickness is about 80 μm) is coated with A3 carbon steel for about 1200 hours, and for magnesium (magnesium alloy AZ91D) for about 320 hours. Alloy) has a neutral salt spray resistance time of about 1000h, and coated copper (copper alloy) has a neutral salt spray resistance time of about 880h.

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PUM

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Abstract

The present invention relates to conducting paint, and is especially one kind of TiB2 powder based conducting paint powder and its preparation process and application. The TiB2 powder based conducting paint powder consists of film forming material, coupling agent, diluent, assistants and curing agent; and conducting assistant consists of TiB2 powder as main component, carbon black, graphite, acetylene black and other conducting powder in certain proportion. It is prepared through adding the assistants into the film forming material and dispersing in a dispersing machine, adding coupling agent and conducting powder through stirring, adding mixed diluent through stirring to obtain paint product. The conducting paint coating is formed through brushing, spraying or dipping, and cured at room temperature or through heating. The present invention has the advantages of high conducting property, high hardness, high wear resistance, excellent protecting performance, etc.

Description

technical field [0001] The invention relates to the field of conductive coatings, specifically a TiB-based 2 Powder conductive coating and its preparation method and application. Background technique [0002] Conductive coatings refer to a class of coatings with conductor and semiconductor functions, which have been widely used in the electronic and electrical industry, printed circuit boards, switches, marine antifouling coatings, electrothermal materials, electromagnetic shielding, surface dust prevention and other fields. Conductive coatings can be divided into additive type and structural type according to the mechanism of conductivity. Additive conductive coating refers to the addition of conductive inorganic particles or organic antistatic agents to non-conductive resins, utilizing the physical and mechanical properties of organic resins and the conductivity of fillers; "Afterwards, polymer materials with conductive functions can be directly formed into films or mixe...

Claims

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Application Information

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IPC IPC(8): C09D5/24C09D7/12C09D163/00C09D133/00C09D175/04C09D167/04C09D183/00
Inventor 刘建国严川伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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