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Preparation method of line heat source

A wire heat source, wire-shaped technology, applied in the direction of heating element material, heating element shape, etc., can solve the problems of complicated carbon fiber paper preparation process, inability to prepare micro wire heat source, and large thickness of carbon fiber paper, etc., and achieves light weight and electric-thermal conversion efficiency. High, small thermal hysteresis effect

Active Publication Date: 2011-12-14
TSINGHUA UNIV +1
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Problems solved by technology

[0004] However, the method for preparing a linear heat source in the prior art has the following disadvantages: first, the heating layer uses carbon fiber paper, the preparation process of carbon fiber paper is complicated, and the paper base material used in the existing papermaking process is required, and the cost is relatively high
Second, the thickness of the carbon fiber paper prepared by the papermaking process is relatively large, so the micro wire heat source cannot be prepared by this method

Method used

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  • Preparation method of line heat source
  • Preparation method of line heat source
  • Preparation method of line heat source

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preparation example Construction

[0023] see Figure 4 The first embodiment of the technical solution provides a method for preparing a linear heat source 20, which mainly includes the following steps:

[0024] Step 1, providing a linear substrate 202 .

[0025] The linear substrate 202 is used to support the carbon nanotube structure 204, and its material can be a hard material, such as: ceramics, glass, resin, quartz, etc., or a flexible material, such as: plastic or flexible fiber, etc., for making The wire heat source 20 is bent into any shape as required during use. The length, diameter and shape of the linear base 202 are not limited, and can be selected according to actual needs. It can be understood that the material of the linear base 202 is not limited to the materials listed above, as long as it is an insulating material with certain heat resistance. The length, diameter and shape of the linear base 202 are not limited, and can be selected according to actual needs. The preferred linear base 202...

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Abstract

A method for preparing a linear heat source, which specifically includes the following steps: providing a linear substrate; forming a reflective layer on the surface of the linear substrate; preparing a carbon nanotube structure; placing the carbon nanotube structure on the reflective layer The surface is used as a heating layer; two electrodes are formed at both ends of the linear substrate at intervals, and the two electrodes are electrically connected to the carbon nanotube structure; and an insulating protective layer is formed on the outer surface of the carbon nanotube structure, forming One-line heat source.

Description

technical field [0001] The invention relates to a preparation method of a linear heat source, in particular to a preparation method of a carbon nanotube-based linear heat source. Background technique [0002] See figure 1 , the prior art provides a wire heat source 10, which includes a hollow cylindrical support 102; a heating layer 104 is arranged on the surface of the support 102, and an insulating protective layer 106 is arranged on the surface of the heating layer 104; two electrodes 110 are respectively arranged It is located at both ends of the bracket 102 and is electrically connected to the heating layer 104 ; two clamping parts 108 fix the two electrodes 110 and the heating layer 104 on the two ends of the bracket 102 respectively. Wherein, the heating layer 104 is usually formed by winding or wrapping a carbon fiber paper. [0003] The preparation method of the carbon fiber paper comprises the following steps: cutting synthetic fibers or cellulose fibers into sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/40H05B3/48H05B3/54H05B3/14
Inventor 冯辰刘锴王鼎姜开利刘长洪范守善
Owner TSINGHUA UNIV
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