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Carbon series electric heating coating

A technology for electrothermal coatings and conductive materials, applied in heating element materials, polyurea/polyurethane coatings, coatings, etc., can solve the problems of complex manufacturing process, poor adhesion and high cost, and achieve high electrothermal conversion efficiency, low cost, high temperature stable effect

Inactive Publication Date: 2008-03-26
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary electric heating films are usually divided into semiconductor electric heating films and ceramic electric heating films. Due to the complex manufacturing process, high cost, brittleness and poor adhesion of these two electric heating films, their practical application is severely limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Flake graphite particle size <300 mesh 60%

[0022] Silver Powder 5%

[0023] Halogen-free flame retardant 1%

[0024] TMG-7 coupling agent 0.5%

[0025] T-160 high temperature resistant plasticizer 1.5%

[0026] Resin for screen printing 32%,

[0027] Preparation method: Add conductive particles in proportion (both by mass ratio) to the selected resin binder for screen printing, then add 100-300% of the total amount of ingredients such as acetone or alcohol and stir for 5 minutes, and then stir While adding various additives (according to the order of coupling agent, plasticizer, stabilizer and flame retardant), stir fully at 15-40°C for 30-60 minutes, or grind and stir for 30 minutes to obtain The invention relates to a carbon-based electric heating paint.

Embodiment 2

[0029] Flake graphite degree <600 mesh 30%

[0030] Conductive carbon black 30%

[0031] Silicon carbide 3%

[0032] Halogenated flame retardant 1.5%

[0033] DB-160 coupling agent 0.5%

[0034] Dibasic Lead Phthalate Stabilizer 1%

[0035] Modified high temperature phenolic resin 34%

[0036] The preparation method is as in Example 1.

Embodiment 3

[0038] Conductive carbon black 50%

[0039] Silver Powder 10%

[0040] Halogenated flame retardant 1%

[0041] TMC-7 coupling agent 0.5%

[0042] Hydroquinone stabilizer 1%

[0043] Polyol Benzoate Plasticizer 1.5%

[0044] Modified high temperature phenolic resin 36%

[0045] The preparation method is as in Example 1.

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Abstract

The electrothermal carbon paint includes inorganic conducting material 30-80 wt%, adhesive 20-70 wt% and assistant 1-8 wt%. The inorganic conducting material is one or several kinds of scale graphite, silicon carbide, artificial graphite and conductive carbon black. The electrothermal carbon paint has electrothermal efficiency as high as 93 %, no light energy consumption and wide application.

Description

technical field [0001] The invention relates to a carbon-based electrothermal paint, which can be used for related heating materials and belongs to the technical field of indoor heating. Background technique [0002] Calculated according to Joule's law, the electric heating wire is a main filament that generates heat, and has strong light and electromagnetic inductance effect loss. The heat radiation is mainly three-dimensional diffusion, and its electric heating efficiency is only 57%. The electric heating efficiency of PTC ceramics can reach 70%. Electric heating film Because it is the heat source of the mask, there is no light energy consumption, and its electric heating efficiency can reach 93%. Ordinary electric heating films are usually divided into semiconductor electric heating films and ceramic electric heating films. Due to the complex manufacturing process, high cost, brittleness and poor adhesion of these two electric heating films, their practical applications a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/00C09D175/04H05B3/14
Inventor 夏金童王伯泉
Owner HUNAN UNIV
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