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A kind of high infrared radiation powder and its preparation method

A technology of infrared radiation powder and powder, applied in sustainable manufacturing/processing, climate sustainability, coating, etc., can solve the problem of composition and structure of infrared radiation components, extensive infrared radiation materials, and low emissivity in all bands And other problems, to achieve the effect of improving infrared radiation rate, large lattice distortion, and low production cost

Active Publication Date: 2018-10-23
武汉钢铁有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the infrared radiation coating products used in domestic engineering have relatively extensive control over the composition and structure of infrared radiation materials. Often, various oxides are mixed and the coatings are directly prepared. Through the solid-state reaction of various oxides during high temperature use To form the required infrared radiation components, it is difficult to fundamentally control the composition and structure of the infrared radiation components; there are also high-temperature roasting solid-phase reaction methods to prepare synthetic infrared radiation powders, but the synthesis temperature is high, the holding time is long, and the powder Large granularity
[0004] In addition, although the emissivity of a large number of developed infrared radiation materials in the far-infrared region (8-25 μm) has exceeded 0.9, with the increase of the use temperature, the main peak of infrared radiation moves to short-wave, while the near-middle infrared region The emissivity is low, even less than 0.5, which has become one of the difficulties in improving the thermal efficiency and energy utilization of thermal equipment by using infrared radiation energy-saving materials
[0005] Therefore, in view of the problems of low full-band emissivity and unstable quality in infrared radiation coatings, it is particularly important to develop high-quality, high-emissivity infrared radiation powders

Method used

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  • A kind of high infrared radiation powder and its preparation method
  • A kind of high infrared radiation powder and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0035] A kind of high infrared radiation powder, its preparation method comprises the following steps:

[0036] 1) Mixing: take each raw material according to the proportioning ratio, each raw material and its mass percentage are: ilmenite powder 40%, Fe 2 o 3 Powder 23%, TiO 2 Powder 15%, Cr 2 o 3 Powder 10%, Co 2 o 3 Powder 10%, CeO 2 Powder 2%; put the weighed raw materials into a plastic mixing tank, use alumina as a mixing ball and absolute ethanol as a dispersion medium, and wet mix for 12-24 hours; filter out the mixed slurry and dry it , get mixed powder;

[0037] 2) Put the obtained mixed powder into a graphite reactor, and then put it into a high-current pulse reaction synthesis device, and keep a vacuum (≤10Pa) in the graphite reactor; Heating rate to 1000°C, keep it warm for 10 minutes, and then cool down with the furnace to obtain a synthetic powder;

[0038] 3) The synthetic powder was put into a vacuum ball mill tank for ball milling, wherein alumina wa...

Embodiment 2

[0042] A kind of high infrared radiation powder, its preparation method comprises the following steps:

[0043] 1) Mixing: each raw material is weighed according to the proportion, each raw material and its mass percentage are: ilmenite powder 30%, Fe 2 o 3 Powder 25%, TiO 2 Powder 12%, Cr 2 o 3 Powder 15%, Co 2 o 3 Powder 15%, CeO 2 Powder 3%; put the weighed raw materials into a plastic mixing tank, use aluminum oxide as a mixing ball and absolute ethanol as a dispersion medium, and wet mix for 12-24 hours; filter out the mixed slurry and dry it , get mixed powder;

[0044] 2) Put the obtained mixed powder into a graphite reactor, then put it into a high-current pulse reaction synthesis device, and keep a vacuum (≤10Pa) in the graphite reactor; Heating rate to 1100°C, keep it warm for 10 minutes, and then cool down with the furnace to obtain a synthetic powder;

[0045] 3) The synthetic powder was put into a vacuum ball mill tank for ball milling, wherein alumina was ...

Embodiment 3

[0048] A kind of high infrared radiation powder, its preparation method comprises the following steps:

[0049] 1) Mixing: each raw material is weighed according to the proportion, each raw material and its mass percentage are: ilmenite powder 30%, Fe 2 o 3 Powder 25%, TiO 2 Powder 8%, Cr 2 o 3 Powder 16%, Co 2 o 3 Powder 16%, CeO 2 Powder 5%; put the weighed raw materials into a plastic mixing tank, use aluminum oxide as a mixing ball and absolute ethanol as a dispersion medium, and wet mix for 12-24 hours; filter out the mixed slurry and dry it , get mixed powder;

[0050] 2) Put the obtained mixed powder into a graphite reactor, then put it into a high-current pulse reaction synthesis device, and keep a vacuum in the graphite reactor; directly apply a pulse current to the graphite reactor, and heat it at a heating rate of 300 °C / min to Temperature of 1150°C, heat preservation for 10 minutes, and then cool down with the furnace to obtain a synthetic powder;

[0051]...

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Abstract

The invention discloses a powder with high infrared radiation for an infrared energy-saving coating and a preparation method thereof. The powder with high infrared radiation is prepared by mixing ilmenite powder, Fe2O3 powder, TiO2 powder, Cr2O3 powder, Co2O3 powder and CeO2 powder, then placing the obtained mixture in a graphite reactor, putting the graphite reactor into a great-current-pulse reactive synthesis apparatus, carrying out heating to 950 to 1250 DEG C at a heating rate of 25 to 400 DEG C / min, maintaining the temperature for 5 to 30 min, then carrying out natural cooling so as to obtain synthesized powder and subjecting the synthesized powder to ball milling so as to obtain the powder with high infrared radiation. Compared with the prior art, the powder with high infrared radiation in the invention has the advantages of high infrared emitting ability, stable quality, high usage temperature, long service life, a short synthesis period, low energy consumption, low production cost and substantial energy saving effect.

Description

technical field [0001] The invention belongs to the field of functional materials and preparation, and in particular relates to a high infrared radiation powder and a preparation method thereof. Background technique [0002] As a new energy-saving material, infrared radiation materials are widely used in aviation and military materials, new building materials, various industrial kilns and heat-absorbing surfaces of civil boilers and other fields. Infrared radiation materials can significantly improve the thermal efficiency of industrial kilns and achieve energy-saving effects. The research and development of high-emitting infrared radiation materials has important practical significance for the improvement of my country's energy shortage and the development of low-carbon economy. environmental development needs. [0003] Infrared radiation coatings are composed of radiation powder base material and carrier binder. The role of radiation powder base material is to improve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00
CPCC09D1/00Y02P20/10
Inventor 杜贤武朱小平丁翠娇韩斌
Owner 武汉钢铁有限公司
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