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Heating body for ultra-high temperature field platform and preparation method and application of heating body

A heating body, ultra-high temperature technology, applied in chemical instruments and methods, electric heating devices, heating element materials, etc., can solve the problems of inability to achieve temperature field construction, insignificant Joule heating effect, low resistivity of graphene, etc., and achieve Joule heating effect. Rapid, broad application prospects, precise and controllable temperature field effects

Pending Publication Date: 2022-03-29
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common heating element materials include tungsten, graphite, etc., and there are the following problems: because tungsten is a metal material, the Joule heat generated is low, so it is usually prepared as a filamentary structure and cannot realize the construction of a large-area temperature field; Larger thickness, slower heating rate, usually at 10 3 ℃ / s; the resistivity of graphene is low, and the Joule heating effect is not obvious

Method used

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  • Heating body for ultra-high temperature field platform and preparation method and application of heating body
  • Heating body for ultra-high temperature field platform and preparation method and application of heating body
  • Heating body for ultra-high temperature field platform and preparation method and application of heating body

Examples

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Embodiment 1

[0043] A heating element for an ultra-high temperature temperature field platform, the heating element is a pre-reduced graphene oxide film, wherein the pre-reduced graphene oxide film is prepared by heat-treating graphene oxide nanosheets.

[0044] In this embodiment, the length of the pre-reduced graphene oxide film is 5 mm, the width is 0.5 mm, and the thickness is 10 μm.

[0045] In this embodiment, a high-temperature-resistant carrier material is also included, and the pre-reduced graphene oxide film is fixed on the high-temperature-resistant carrier material, wherein the high-temperature-resistant carrier material is an alumina ceramic material.

[0046] A method for preparing a heating element for an ultra-high temperature temperature field platform in the above-mentioned present embodiment, such as figure 1 shown, including the following steps:

[0047] (1) Mix graphene oxide nanosheets with a sheet diameter of 40 μm to 50 μm with water to prepare an aqueous solution ...

Embodiment 2

[0079] A heating element for an ultra-high temperature temperature field platform, which is basically the same as in Example 1, except that in Example 2, the length of the pre-reduced graphene oxide film is 5 mm, the width is 0.5 mm, and the thickness is 25 μm.

[0080] A method for preparing a heating element for an ultra-high temperature temperature field platform is basically the same as that of Example 1, the only difference being that in Example 2, the distance between the scraper and the substrate is 3mm. In this embodiment, it can be scraped several times until the target thickness is reached.

[0081] The heating element in Example 2 was used as a heat source to construct an ultra-high temperature temperature field platform.

Embodiment 3

[0083] A heating element for an ultra-high temperature temperature field platform, which is basically the same as in Example 1, except that in Example 3, the length of the pre-reduced graphene oxide film is 5 mm, the width is 0.5 mm, and the thickness is 100 μm.

[0084] A method for preparing a heating element for an ultra-high temperature temperature field platform is basically the same as that of Example 1, the only difference being that in Example 3, the distance between the scraper and the substrate is 4mm. In this embodiment, it can be scraped several times until the target thickness is reached.

[0085] The heating element in Example 3 was used as a heat source to construct an ultra-high temperature temperature field platform.

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Abstract

The invention discloses a heating element for an ultra-high temperature field platform and a preparation method and application thereof, the heating element is a pre-reduced graphene oxide film, the length is larger than or equal to the width, the width is smaller than or equal to 10 mm, and the thickness is smaller than or equal to 200 microns. The preparation method comprises the following steps: preparing the graphene oxide film; and carrying out heat treatment on the graphene oxide film. According to the invention, the pre-reduced graphene oxide film is a heating body material which is light, ultrathin, stable in heating performance and rapid in Joule heating effect, and has the advantages of high heating rate, high temperature, accurate and adjustable temperature and the like; the ultra-high temperature field which is accurate and controllable in temperature field, high in heating rate and high in repeatability can be constructed, and the ultra-high temperature field has high use value and good application prospects. The preparation method has the advantages of being simple in process, convenient to operate, low in cost and the like, large-scale preparation can be achieved, and the method is suitable for industrial production and beneficial to application and popularization of an ultra-high temperature field platform.

Description

technical field [0001] The invention belongs to the field of measurement of an ultra-high temperature environment, and relates to a heating element used for an ultra-high temperature temperature field platform, a preparation method and an application thereof. Background technique [0002] Due to its applicability in cutting-edge fields such as aerospace, advanced materials, and advanced processing technology, the construction of ultra-high temperature temperature fields has attracted widespread attention in recent years. Studies have shown that the construction of an ultra-high temperature temperature field with wide application value usually needs to meet three conditions: accurate and controllable temperature field, fast heating rate, and real-time measurement of temperature field. [0003] At present, common ultra-high temperature construction methods mainly rely on graphite furnaces, high-temperature combustion chambers, wind tunnels and other equipment. Although graphi...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/20C04B37/00C01B32/198
CPCH05B3/145H05B3/20C04B37/00C01B32/198
Inventor 梁耕源张鉴炜鞠苏刘钧尹昌平杨金水刑素丽
Owner NAT UNIV OF DEFENSE TECH
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