Microwave high-temperature heating heat-generating material containing MoSi2 and preparation method thereof

A technology for high-temperature heating and heating materials, applied in microwave heating and other directions, can solve the problems of low high-temperature heating life, high cost of heating elements, slow heating speed, etc., and achieve the effects of good high-temperature oxidation resistance, low cost, and fast heating speed.

Active Publication Date: 2009-10-28
唐山任氏巨源微波仪器有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a long life, high temperature and high efficiency containing MoSi 2 The microwave high-temperature heating heating material and its preparation method, using it to replace traditional heating elements such as resistance wires, silicon carbide rods and silicon molybdenum rods, can not only solve the problems of low high-temperature heating life and poor heating capacity of existing microwave strong absorption materials, but also It can solve the shortcomings of traditional heating elements such as high cost, low life, and slow heating speed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Select MoSi with an average particle size of about 80 μm as the base powder 2 Powder (purity generally greater than 95wt.%) and SiC powder with an average particle size of about 150 μm, MoSi 2 The proportions of SiC and SiC are respectively: 30wt.% and 70wt.%.

[0035] (2) The weighed MoSi 2 Powder and SiC powder were mixed on a ball mill with alcohol as solvent for 6 hours to obtain a mixture.

[0036] (3) Dry the above mixture to obtain a microwave high-temperature heating heating material.

Embodiment 2

[0038] (1) Select MoSi with an average particle size of about 100 μm as the base powder 2 Powder (purity generally greater than 95wt.%) and SiC powder with an average particle size of about 150 μm, MoSi 2 , SiC, water glass, high-temperature glue and water are respectively: 8wt.%, 30wt.%, 2wt.%, 10wt.% and 50wt.%. to increase or decrease.

[0039] (2) Firstly, the weighed MoSi 2 Powder and SiC powder were mixed on a ball mill with alcohol as a solvent for 8 hours to obtain a mixture. After the above mixture was dried, it was mixed with weighed water glass, high-temperature glue and water in a mixer for 1 hour to obtain a slurry.

[0040] (3) Select a plate, or block, or a container of a specific shape composed of thermal insulation materials as a solid carrier, and apply the slurry described in (2) on the solid carrier by means of spraying equipment or manually (coating Grooves of a certain depth can be carved on the surface of the solid carrier to be coated to increase the...

Embodiment 3

[0043] (1) Select MoSi with an average particle size of about 50 μm as the base powder 2 powder (purity generally greater than 95wt.%) and SiC powder with an average particle size of about 80 μm, and the sintering aid is SiO with an average particle size of about 50 μm 2 Powder, MoSi 2 , SiC and SiO 2 The content proportions of the three are respectively: 30wt.%, 67wt.% and 3wt.%.

[0044] (2) After mixing the above weighed powder on a ball mill for 12 hours with alcohol as a solvent, add 10 vol.% phenolic resin solution as a binder, and mix for another 6 hours to obtain a mixture.

[0045] (3) Dry the above-mentioned mixture material, grind it, and pass through a 60-mesh sieve.

[0046] (4) The above-mentioned sieved materials were pressed and formed on a flat vulcanizing machine, the forming pressure was about 30MPa, and the pressure was maintained for 30s, and then sintered at 1700°C under the protection of Ar gas in a high-temperature sintering furnace to obtain a micro...

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Abstract

The invention discloses a microwave high-temperature heating heat-generating material containing MoSi2 and a preparation method thereof in the technical field of microwave high-temperature heating heat-generating materials. The microwave high-temperature heating heat-generating material containing MoSi2 is prepared by compounding MoSi2 and a microwave strongly absorbing material on the basis of the excellent high-temperature inoxidability and excellent microwave absorbing property of the MoSi2. The using forms of the MoSi2 comprise powder, slurry and plate. The microwave strongly absorbing material compounded with the MoSi2 is one or a mixture of more than one of SiC, AlN, C, CuO and Fe3O4. The microwave high-temperature heating heat-generating material of the invention is used as a heat-generating material to replace a resistance wire, a silicon carbide rod, a silicon-molybdenum bar and other traditional heating elements, has the advantages of excellent high-temperature inoxidability, long service life, quick temperature rise, large heat-generating area, uniform heating and energy conservation, is particularly suitable to be used as a microwave high-temperature heating unit to replace a heating element in the conventional electric furnace and can also be used as a novel microwave absorbing material.

Description

technical field [0001] The invention belongs to the technical field of microwave high-temperature heating heating materials, in particular to a 2 Microwave high-temperature heating heating material and preparation method thereof, more precisely a kind of MoSi 2 As a microwave absorption and high temperature anti-oxidation component, composite materials with excellent microwave absorption and microwave high temperature heating properties and their preparation methods can be obtained through composition changes and process control, especially suitable for use as high temperature heating elements, replacing traditional electric furnaces heating element. Background technique [0002] Microwave energy has been increasingly used in heating fields, such as: food, paper, wood, sintering and so on. The microwaves used in actual heating are usually electromagnetic waves with frequencies of 915MHz and 2450MHz. The simple principle of microwave heating is that the polarization of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/58C04B30/00C04B28/24H05B6/64
Inventor 申玉田徐艳姬王玺龙申偲伯申玉娟王建军
Owner 唐山任氏巨源微波仪器有限公司
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