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Preparation method of polymer electric heating film

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

Active Publication Date: 2014-10-15
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 electric heating film, which includes the following steps:

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

[0049] Weigh 10% colloidal graphite powder, 33% conductive carbon black powder, 15% nano carbon powder, 18% zinc oxide powder, 13% silver powder and 11% magnesium hydroxide powder according to the weight percentage of raw materials, and place them in Mix uniformly in the mixer, the mixing speed is 50 rpm, and the mixing time is 10 hours to obtain the conductive composite filler powder;

[0050] 2) Preparation of conductive composite filler:

[0051] Weigh 5% according to the weight percentage of the raw materials in step 1). Conductive composite filler powder, 52% polyamide resin, 36% xylene and 7% silane coupling agent KH550 are placed in a grinding disperser to disperse and grind. The grinding speed is 100 rpm, and the dispersion grinding time lasts for 8 hours to obtain a conductive composite fill...

Embodiment 2

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

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

[0064] Weigh 36% of colloidal graphite powder, 23.9% of conductive carbon black powder, 0.1% of nano carbon powder, 15% of zinc oxide powder, 10% of silver powder and 15% of magnesium hydroxide powder according to the weight percentage of raw materials. Mix uniformly in the mixer, the mixing speed is 300 rpm, and the mixing time is 1 h to obtain the conductive composite filler powder;

[0065] 2) Preparation of conductive composite filler:

[0066] Weigh 36% according to the weight percentage of raw materials in step 1) of conductive composite filler powder, 40% polyamide resin, 20% xylene and 4% silane coupling agent KN560, and place them in a grinding disperser to disperse and grind. The grinding speed is 1000 rpm, and the dispersion grinding time lasts for 1 hour to obtain a conductive composite filler. The mass concentration ...

Embodiment 3

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

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

[0078] Weigh 36% of colloidal graphite powder, 8% of conductive carbon black powder, 13% of nano carbon powder, 17% of zinc oxide powder, 13% of silver powder and 13% of magnesium hydroxide powder according to the weight percentage of raw materials. Mix uniformly in the mixer, the mixing speed is 50~300rpm, the mixing time is 1~10h, then the conductive composite filling powder is obtained;

[0079] 2) Preparation of conductive composite filler:

[0080] Weigh 36% according to the weight percentage of the raw materials in step 1). Conductive composite filler powder, 20% polyamide resin, 36% xylene and 8% silane coupling agent KH570 are placed in a grinding disperser to disperse and grind. The grinding speed is 300 rpm, and the dispersing grinding time lasts for 4 hours to obtain a conductive composite filler, and the mass concentr...

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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 preparation of electric heating materials, in particular to a method for preparing a polymer electric heating film. Background technique [0002] The application of electric heating film in China has a history of decades. The 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, 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 polymer structure in terms of material properties. Macromolecules are a form of material composition relative to metal and other monomeric structural substances. Plastics, synthetic rubber and various coatings are all macr...

Claims

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Application Information

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Patent Type & Authority Patents(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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