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Ultralow-power-consumption graphene high-temperature heating tube and manufacturing method thereof

A technology of ultra-low power consumption and manufacturing method, applied in the shape of heating element, ohmic resistance heating parts and other directions, can solve the problems of poor weldability of alloys, high density of nickel-chromium alloy, low heating rate, etc., and achieve good heating performance, The effect of good heating uniformity and long service life

Active Publication Date: 2021-06-29
陈建波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for nickel-chromium alloys, it is still insufficient in the following aspects: the density of nickel-chromium alloys is high, and the thickness is several millimeters when used; Small, the heating element has no automatic constant temperature and power compensation function, which makes the structure of the electric heating system complex, and the thermal inertia is large. FeCrAl is a ferritic alloy, which has brittleness at room temperature, brittleness at 475°C and high temperature brittleness above 1000°C. Low high temperature strength due to high temperature brittleness ultimately leads to short service life of the heating element; poor weldability of the alloy, difficult to repair

Method used

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  • Ultralow-power-consumption graphene high-temperature heating tube and manufacturing method thereof
  • Ultralow-power-consumption graphene high-temperature heating tube and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A heating element added with graphene, the preparation method of the heating mixture is as follows:

[0039] (1) Place graphene and insulating particles in a 250-degree oven to dry;

[0040] (2) 1 part of graphene treated in step (1) and 70 parts of insulating particles are placed in a mixer according to the proportion and mixed uniformly to prepare a mixture;

[0041] (3) After the mixed material prepared in step (2) is sieved, add 100 parts of ethanol, seal and stir to obtain a mixed slurry;

[0042] (4) Mix uniformly in the mixed slurry and 25 parts of silicate to prepare the graphene exothermic mixture.

[0043] The process steps for preparing the above-mentioned graphene heating mixture into an ultra-low power consumption graphene high-temperature heating tube are as follows:

[0044] (1) Pass the graphene heating mixture through a 6mm extrusion nozzle to form a semi-finished graphene heating core;

[0045] (2) The semi-finished graphene heating core is baked and ...

Embodiment 2

[0049] A heating element added with graphene, the preparation method of the heating mixture is as follows:

[0050] (1) Place graphene and insulating particles in a 250-degree oven to dry;

[0051] (2) 3 parts of graphene and 37 parts of insulating particles processed in step (1) are placed in a mixer according to the proportion and mixed uniformly to prepare a mixture;

[0052] (3) After the mixed material prepared in step (2) is sieved, add 55 parts of ethanol solvent, seal and stir to obtain mixed slurry;

[0053] (4) Mix uniformly in the mixed slurry and 17 parts of the silicate to prepare the graphene exothermic mixture.

[0054] The process steps for preparing the above-mentioned graphene heating mixture into an ultra-low power consumption graphene high-temperature heating tube are as follows:

[0055] (1) Pass the graphene heating mixture through a 10mm extrusion nozzle to form a semi-finished graphene heating core;

[0056] (2) The semi-finished graphene heating cor...

Embodiment 3

[0060] A heating element added with graphene, the preparation method of the heating mixture is as follows:

[0061] (1) Place graphene and insulating particles in a 250-degree oven to dry;

[0062] (2) 5 parts of graphene and 68 parts of insulating particles processed in step (1) are placed in a mixer according to the proportioning ratio and uniformly mixed to obtain a mixture;

[0063] (3) After the mixed material prepared in step (2) is sieved, add 77 parts of ethanol, seal and stir to obtain a mixed slurry;

[0064] (4) Mix uniformly in the mixed slurry and 29 parts of the silicate to prepare the graphene exothermic mixture.

[0065] The process steps for preparing the above-mentioned graphene heating mixture into an ultra-low power consumption graphene high-temperature heating tube are as follows:

[0066] (1) Pass the graphene heating mixture through a 3mm extrusion nozzle to form a semi-finished graphene heating core;

[0067] (2) The semi-finished graphene heating co...

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Abstract

The invention relates to an ultralow-power-consumption graphene high-temperature heating tube and a manufacturing method thereof. The heating tube comprises a graphene heating core and two metal wires, the two metal wires are located on the two sides of the graphene heating core, the metal wires and the graphene heating core are connected into a whole in a pressed mode. The ultralow-power-consumption graphene high-temperature heating tube is characterized in that the graphene heating core is made of a heating mixture; the heating mixture is prepared from the following components in parts by mass: 1-5 parts of graphene, 30-70 parts of insulating particles, 10-100 parts of a solvent and 3-30 parts of a cross-linking agent. According to the heating tube, a chemical mode different from a physical mode is adopted, a connectable bond chain is generated on the surface of the graphene, the graphene can be easily connected with other substances, and the graphene is used for manufacturing a heating tube with the high temperature of 350 DEG C or above. The graphene heating mixture has the advantages of being easy to manufacture, low in cost, high in plasticity, after the heating core is prepared, the quality of the heating core is excellent, and the heating uniformity is good.

Description

technical field [0001] The invention belongs to the technical field of heating elements, and relates to a heating element with a surface temperature of 350 degrees or higher, specifically an ultra-low power consumption graphene ultra-high temperature heating tube and a manufacturing method thereof. Background technique [0002] Graphene is a two-dimensional crystal material composed of a single carbon atomic layer - graphene, known as a magical material, is the thinnest known material, and has set off a research boom all over the world. Most of them are used for heat dissipation, and only a few are used for heating at present. Graphene has outstanding thermal conductivity (5000W / (mK)), its Young's modulus (1100GPa), and fracture strength (125GPa). Graphene has excellent electrical properties Performance (electron mobility can reach 2×105cm2 / Vs at room temperature). Andre Geim and Konstantin Novoselov won the 2010 Nobel Prize in Physics for their contributions to graphene re...

Claims

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Application Information

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IPC IPC(8): H05B3/02H05B3/40
CPCH05B3/02H05B3/40Y02P20/10
Inventor 陈建波王世昌刘安辉苏芃因林柏侨黄坚单㬢肖洪强徐磊
Owner 陈建波
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