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Carbon fiber electric heating core without support body and demolding method thereof

A carbon fiber and electric heating core technology, applied in the field of carbon fiber infrared electric heating core preparation, can solve the problems of high scrap rate, low demoulding efficiency, poor quality, etc., and achieve favorable detachment, good demoulding effect, and stable demoulding gap uniform effect

Active Publication Date: 2018-08-14
TIANJIN POLYTECHNIC UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention aims to provide a supportless carbon fiber electric heating core and its demoulding method. Coating the release cloth, using the instantaneous high-temperature heat radiation energy generated when the carbon fiber is energized, the release agent on the surface of the release cloth is melted into a liquid, and at the same time, the mesh cloth in the release cloth is carbonized into powder, making the high-temperature resistant support core There is a stable gap between the rod and the carbon fiber heating core, and the demoulding is realized after cooling down. The demoulding method of the present invention solves the problems of low demoulding efficiency, poor quality and high rejection rate of the existing carbon fiber infrared heating core during the demoulding process. Has a good application prospect

Method used

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  • Carbon fiber electric heating core without support body and demolding method thereof

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Effect test

Embodiment 1

[0041] 1. A release agent for unsupported carbon fiber electric heating core demoulding, said release agent comprising the following raw materials: paraffin wax, graphite powder, wherein the weight ratio of paraffin wax and graphite powder is 1:1, and the particle size is 500 mesh, mix the above raw materials in proportion and then mix with water to make a paste.

[0042] 2. A release cloth 2 for demoulding a carbon fiber electric heating core without a support body, the release cloth 2 includes: the release agent described in this embodiment, cotton yarn with a porous structure, wherein the paste-like release cloth The mold agent is evenly applied on the surface of the cotton yarn, and the surface density of the release cloth 2 after applying the mold release agent is 100g / m 2 .

[0043] 3. A method for preparing a supportless carbon fiber electric heating core, comprising the following steps:

[0044] (1) Coating the release cloth 2 prepared in this embodiment on the surfa...

Embodiment 2

[0048]1. A release agent for unsupported carbon fiber electric heating core demoulding, said release agent comprising the following raw materials: temperature-resistant silicone grease, powdered graphene, wherein the temperature-resistant silicone grease, powdered graphene The weight ratio is 2:1, and the particle size is 600 mesh. The above raw materials are mixed in proportion and then mixed with water to make a paste.

[0049] 2. A release cloth 2 for demolding a carbon fiber electric heating core without a support body, the release cloth 2 includes: the release agent described in this embodiment, medical gauze with a porous structure, wherein the paste-like The release agent is evenly applied on the surface of the medical gauze, and the surface density of the release cloth 2 after applying the release agent is 80g / m 2 ;

[0050] 3. A method for preparing a supportless carbon fiber electric heating core, comprising the following steps:

[0051] (1) Cover the release cloth...

Embodiment 3

[0055] 1. A release agent for demolding a carbon fiber electric heating core without a support, the release agent includes the following raw materials: temperature-resistant silicone grease, powdered carbon nanotubes, wherein, temperature-resistant silicone grease, powdered carbon nanotubes The weight ratio of the tube is 1.5:1, and the particle size is 550 mesh. The above raw materials are mixed in proportion and then mixed with water to make a paste.

[0056] 2. A release cloth 2 for demoulding a carbon fiber electric heating core without a support body, the release cloth 2 includes: the release agent described in this embodiment, cotton yarn with a porous structure, wherein the paste-like release cloth The mold agent is evenly applied on the surface of the cotton yarn, and the surface density of the release cloth 2 after applying the mold release agent is 120g / m 2 .

[0057] 3. A method for preparing a supportless carbon fiber electric heating core, comprising the followin...

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Abstract

The invention relates to a carbon fiber electric heating core without a support body and a demolding method of the carbon fiber electric heating core without the support body and belongs to the fieldof preparation of carbon fiber infrared electric heating cores. The method comprises the following steps that firstly, the surface of a support core rod of a high-temperature-resistant carbon fiber electric heating body is wrapped with demolding cloth, a demolding agent on the surface of the demolding cloth is melted into liquid by utilizing instantaneous high-temperature heat radiation energy generated when carbon fibers are electrified, and meanwhile mesh fabric in the demolding cloth is carbonized into powder, so that a stable gap exists between the high-temperature-resistant support core rod and the carbon fiber electric heating core, and demolding is realized after cooling. The demolding method solves the problems of low demolding efficiency, poor quality and the high rejection rate of an existing carbon fiber infrared electric heating core in a demolding process. According to the demolding method, the demolding mode of the cooperative use of the demolding cloth with the melting characteristic and a high-temperature-resistant support core rod die is adopted, during demolding, the demolding gap can be flexibly adjusted according to the wrapping thickness of the demolding cloth,so that the demolding method is suitable for demolding carbon fiber electric heating tapes in different shapes and has the good application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of carbon fiber infrared electric heating cores, in particular to a supportless carbon fiber electric heating core and a demoulding method thereof. Background technique [0002] In the field of infrared radiation heating, the heating efficiency of carbon fiber infrared radiation heating is currently higher. The main principle is to use the characteristics of carbon fiber itself as a semiconductor and the characteristics of high far-infrared emissivity when electrified. The emissivity of carbon fiber itself can reach more than 0.9, which is close to Absolute black body, its electrothermal radiation conversion efficiency and thermal radiation heating efficiency are very high. At the same time, carbon fiber is also a kind of flexible material, which has excellent characteristics such as high strength, high modulus, high temperature resistance, corrosion resistance, and less release of impurities in high te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/60B29C33/68B29C35/02
CPCB29C33/60B29C33/68B29C35/02B29L2031/779
Inventor 曹伟伟井敏朱波于宽
Owner TIANJIN POLYTECHNIC UNIV
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