Low-temperature composite electrothermal material and its preparation method

An electrothermal material and low temperature technology, applied in the field of low temperature composite electrothermal material and its preparation, can solve the problems of low working life, scrapped heating layer, large contact resistance and gap, etc., and achieve the effect of fast heating time

Inactive Publication Date: 2011-12-21
SHANGHAI RELI TECH GRP CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] 1. As a heating material, carbon fiber conductive paper is based on a three-dimensional conductive network built by carbon fiber in conductive paper. The main factors affecting its resistance are contact resistance and the size of its gap. The carbon fiber is in a fluffy state, and the contact resistance and gap are large, which greatly affects its resistance, thereby affecting its heating effect
[0004] 2. When carbon fiber conductive paper is used for heating, it is mostly pre-buried under the cement floor. The strong alkali in the cement mud has a great corrosive effect on it, and it is easy to cause the direct scrapping of the heating layer
[0005] 3. Carbon fiber conductive paper and conductive tape often have poor contact, which can easily cause current breakdown between carbon fiber conductive paper and conductive tape
[0006] 4. Carbon fiber conductive paper is directly applied to plane heating. When it is electrified, there will be a large amount of leakage current on its surface. After testing, the leakage current at its working temperature after direct electrification and heating is much higher than the 0.08mA stipulated by the state , seriously endangering the life safety of users
[0007] 5. Carbon fiber conductive paper is directly used for plane heating without any treatment, its working life is low, and its stability will gradually decline

Method used

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  • Low-temperature composite electrothermal material and its preparation method
  • Low-temperature composite electrothermal material and its preparation method
  • Low-temperature composite electrothermal material and its preparation method

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preparation example Construction

[0057] Please see attached figure 1 - attached Figure 10 As shown, the preparation method of the low-temperature composite electrothermal material of the present invention includes the following steps:

[0058] Step 1, prepare epoxy resin glass fiber cloth 3. Epoxy glass fiber cloth 3 is prepared by mixing 2124 phenolic resin, 6101 epoxy resin, 706 water-based polyurethane resin, silane coupling agent, acetone solution and alkali-free glass fiber cloth in a certain proportion.

[0059] Step 1.1, mix 2124 phenolic resin and 6101 epoxy resin evenly to make the first mixed solution. The mixing ratio range of 2124 phenolic resin and 6101 epoxy resin is 3-5.5:1.

[0060] Step 1.2, uniformly mix the first mixed solution prepared in step 1.1 with 706 water-based polyurethane resin to prepare the second mixed solution. The mixing ratio range of the first mixed solution to 706 waterborne polyurethane resin is 15-25:1.

[0061] Step 1.3, uniformly mix the acetone solution and the ...

Embodiment 1

[0076] The low-temperature composite electric heating material is prepared by the following method:

[0077] Step 1, prepare epoxy resin glass fiber cloth 3. Epoxy glass fiber cloth 3 is prepared by mixing 2124 phenolic resin, 6101 epoxy resin, 706 water-based polyurethane resin, silane coupling agent, acetone solution and alkali-free glass fiber cloth according to the following ratio.

[0078] Step 1.1, mix 2124 phenolic resin and 6101 epoxy resin in a ratio of 4:1 to make the first mixed solution.

[0079] Step 1.2, mix the first mixed solution prepared in step 1.1 with 706 water-based polyurethane resin in a ratio of 20:1 to prepare the second mixed solution.

[0080] In step 1.3, mix the acetone solution and the silane coupling agent uniformly at a ratio of 75:1 to prepare a third mixed solution.

[0081] In step 1.4, the second mixed solution and the third mixed solution are mixed and stirred evenly to prepare an epoxy resin solution.

[0082] In step 1.5, pour the alk...

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Abstract

The invention relates to a low-temperature composite electric heating material, which consists of two layers of polyethylene terephthalate resin, two layers of epoxy resin glass fiber cloths and a layer of carbon fiber conductive paper, wherein the two layers of epoxy resin glass fiber cloths respectively cover the two sides of the layer of carbon fiber conductive paper, and the two layers of polyethylene terephthalate resin respectively cover the two sides of the two layers of epoxy resin glass fiber cloths. When the low-temperature composite electric heating material is used for building heating, not only can the advantages of a carbon fiber conductive paper, but also the defects of the prior art can be overcome. Therefore, the low-temperature composite electric heating material is an electric heating material which can greatly improve the electric heating conversion efficiency, the heat resistance, the fire resistance, the stability and the service life of heating elements.

Description

technical field [0001] The invention relates to an electrothermal material, in particular to a low-temperature composite electrothermal material and a preparation method thereof. Background technique [0002] In recent years, carbon fiber conductive paper has been widely used in the field of HVAC as an excellent planar heating material. However, the carbon fiber conductive paper planar heating materials currently on the market are mixed. The main problems include: [0003] 1. As a heating material, carbon fiber conductive paper is based on a three-dimensional conductive network built by carbon fiber in conductive paper. The main factors affecting its resistance are contact resistance and the size of its gap. The carbon fiber is in a fluffy state, and the contact resistance and gap are large, which greatly affects its resistance, thereby affecting its heating effect. [0004] 2. When carbon fiber conductive paper is used for heating, it is mostly pre-buried under the cement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/10H05B3/34B32B17/04B32B17/10B32B17/12
CPCY02B30/00
Inventor 全俊成
Owner SHANGHAI RELI TECH GRP CO LTD
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