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Method for preparing polymer electrothermal film

An electrothermal film and polymer technology, applied in electrothermal devices, ohmic resistance heating, electrical components, etc., can solve the problems of power drift power, attenuated heating temperature, easy aging, etc., to solve thermal expansion and contraction and cracking, Enhanced connection strength and good anti-aging properties

Active Publication Date: 2013-02-13
苏州威泰克斯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

Polymer materials have the characteristics of stable structure, good processability, aging resistance, small attenuation, easy to design complex structures, and easy to carry out functional compounding. Polymer electric heating film is a technology that implants these characteristics of polymer materials into electric heating materials. , to change the disadvantages of electrothermal materials such as simple structure, single function, easy aging, and short life
The traditional polymer electric heating film has the disadvantages of low electric-thermal conversion efficiency, uneven heating, power drift or power attenuation, and uncontrollable heating temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The invention provides a method for preparing a polymer electrothermal film, comprising the following steps:

[0048] 1) Preparation of conductive composite filler powder:

[0049] Take by weighing 10% colloidal graphite micropowder, 33% conductive carbon black micropowder, 15% nanometer carbon powder, 18% zinc oxide powder, 13% silver powder and 11% magnesium hydroxide powder by weight percentage, place in Mix evenly in the mixer, the mixing speed is 50rpm, and the mixing time is 10h, and the conductive composite filler powder is obtained;

[0050] 2) Preparation of conductive composite filler:

[0051] Weigh 5% of the conductive composite filling powder in step 1), 52% of polyamide grease, 36% of xylene and 7% of silane coupling agent KH550 in step 1) according to the weight percentage of raw materials, and place them in a grinding and dispersing machine for dispersing and grinding. The grinding speed was 100 rpm, and the dispersion and grinding time was continued f...

Embodiment 2

[0062] A method for preparing a polymer electric heating film, comprising the following steps:

[0063] 1) Preparation of conductive composite filler powder:

[0064] Take by weighing 36% colloidal graphite micropowder, 23.9% conductive carbon black micropowder, 0.1% nano-carbon powder, 15% zinc oxide powder, 10% silver powder and 15% magnesium hydroxide powder, place in Mix evenly in the mixer, the mixing speed is 300rpm, and the mixing time is 1h, and the conductive composite filler powder is obtained;

[0065] 2) Preparation of conductive composite filler:

[0066] Weigh 36% of the conductive composite filling powder in step 1), 40% of polyamide grease, 20% of xylene and 4% of silane coupling agent KN560 according to the weight percentage of raw materials, and place them in a grinding and dispersing machine for dispersing and grinding. The grinding speed is 1000rpm, and the dispersing and grinding time is continued for 1h to obtain the conductive composite filling glue, a...

Embodiment 3

[0076] A method for preparing a polymer electric heating film, comprising the following steps:

[0077] 1) Preparation of conductive composite filler powder:

[0078] Take by weighing 36% colloidal graphite micropowder, 8% conductive carbon black micropowder, 13% nanometer carbon powder, 17% zinc oxide powder, 13% silver powder and 13% magnesium hydroxide powder by weight percentage, place in Mix evenly in the mixer, the mixing speed is 50~300rpm, and the mixing time is 1~10h, and the conductive composite filler powder is obtained;

[0079] 2) Preparation of conductive composite filler:

[0080] Weigh 36% of the conductive composite filling powder in step 1), 20% of polyamide grease, 36% of xylene and 8% of silane coupling agent KH570 in the weight percentage of raw materials, and place them in a grinding disperser for dispersing and grinding. The grinding speed was 300 rpm, and the dispersion grinding time was continued for 4 hours to obtain a conductive composite filling g...

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Abstract

The invention discloses a method for preparing a polymer electrothermal film. The method comprises the following steps: according to the weight percentage of raw materials, weighing 10 to 36 percent of colloidal graphite micro powder, 8 to 33 percent of conductive carbon black micro powder, 0.1 to 15 percent of nano carbon powder, 0.1 to 18 percent of zinc oxide powder, 0.1 to 13 percent of silver powder and 0.1 to 13 percent of magnesium hydroxide powder to prepare conductive composite filling powder; then preparing conductive composite filling glue by utilizing the conductive composite filling powder; preparing a heating thin film and simultaneously preparing insulating composite filling glue; preparing an insulating film by utilizing the insulating composite filling glue; and finally, preparing the polymer electrothermal film. The invention solves the problems of nonuniform heating temperature and high heating efficiency of a conventional electrothermal film. The invention also overcomes the defects of power attenuation, short working service life and the like of the conventional electrothermal film in the using process.

Description

technical field [0001] The invention relates to the technical field of electrothermal material preparation, in particular to a method for preparing a polymer electrothermal film. Background technique [0002] The application of electric heating film has a history of several decades in China. Electric heating film is divided into high temperature electric heating film and low temperature electric heating film. The high temperature film is mainly mica film, the high temperature film is mainly used in electric heaters and industrial heating products, etc., and the low temperature film is mainly used in civil heating. [0003] Polymer electric heating film is one of many electric heating films, which means that its heating material is an electric heating material with a polymer structure in terms of material properties. Macromolecule is a material composition method relative to monomer structure substances such as metals. Plastics, synthetic rubber and various coatings are all ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/34C09D179/08C09D127/18C09D127/12C09D5/24C09D5/25
CPCY02P20/10
Inventor 叶么华
Owner 苏州威泰克斯新材料科技有限公司
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