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Oxide infrared light reflection insulation carbon felt prepared through dipping and sintering method and application of oxide infrared light reflection insulation carbon felt

An infrared light and oxide technology, which is applied in the field of thermal insulation thermal field materials, can solve the problems of extremely high thermal shock resistance of coatings, chalking, cracking and other problems, so as to improve the service life and product quality, improve service life, The effect of reducing pollution

Active Publication Date: 2015-11-11
哈尔滨科友半导体产业装备与技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, at present, especially for carbon felt and carbon-carbon composite materials, the working temperature is high, and the thermal shock resistance of the coating is extremely high. Most of the binders cannot withstand repeated thermal expansion and contraction. In the technical process, the heat reflective coating will crack, pulverize and fall off after several times of use, which affects the high temperature insulation performance of the oxide infrared light reflective coating
[0010] General oxide infrared light reflective coatings are suitable for thermal insulation substrates with high density and low porosity, such as thermal insulation bricks, thermal insulation tiles, etc., but for carbon felt and carbon-carbon composite materials with high porosity, coating It is difficult to form a layer on its surface, and because the thermal expansion coefficients of oxide infrared reflective materials are inconsistent with those of carbon felt and carbon-carbon composite materials, the heat resistance of oxide infrared light reflective coatings on carbon felt and carbon-carbon composite materials Poor seismic performance
The sol-gel method is an effective method for bonding and compounding oxide infrared reflective materials with carbon felt and carbon-carbon composite materials, but the process is relatively complicated and requires a process from sol to gel. longer

Method used

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  • Oxide infrared light reflection insulation carbon felt prepared through dipping and sintering method and application of oxide infrared light reflection insulation carbon felt
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Embodiment 1

[0040] The oxide infrared light reflective thermal insulation carbon felt prepared by the dipping and sintering method in this embodiment is made according to the following method:

[0041] (1) Prepare mixed solution: choose TiO 2 As the oxide infrared light reflective material used in this embodiment, TiO 2 Tetrabutyl orthotitanate is selected as the precursor, and tetrabutyl orthotitanate, epoxy resin and organic solvent industrial alcohol are mixed according to the mass ratio of 5:1:4, and a mixed solution of the three is prepared (wherein orthotitanate Tetrabutyl ester accounted for 50%, epoxy resin accounted for 10%), stirred for 30min, that is, formed TiO 2 A mixed solution of precursors;

[0042] (2) Impregnation treatment: solidify the carbon felt with the matrix to be treated (the density of the solidified carbon felt is 0.2g / cm 3 ) placed in step (1) prepared TiO 2 The impregnation is carried out in the mixed solution of the precursor; in order to improve the imp...

Embodiment 2

[0048] The oxide infrared light reflective thermal insulation carbon felt prepared by the dipping and sintering method in this embodiment is made according to the following method:

[0049] (1) Prepare mixed solution: choose SiO 2 As the oxide infrared light reflective material used in this embodiment, SiO 2 Tetraethyl silicate (TEOS) is used as the precursor, and TEOS, phenolic resin, and organic solvent industrial alcohol are mixed according to the mass ratio of 9:0.5:0.5 as a mixed solution (tetraethyl silicate accounts for 90% by mass, phenolic resin accounted for 5% by mass), and stirred evenly for 20 minutes to form SiO 2 A mixed solution of precursors;

[0050] (2) Impregnation treatment: the soft carbon felt matrix to be treated (the density of the carbon felt is 0.1g / cm 3 ) placed in the SiO prepared in step (1) 2 Precursor mixed solution is impregnated. In order to improve the impregnation efficiency, pressure impregnation is used to discharge the air in the pore...

Embodiment 3

[0056] The oxide infrared light reflective thermal insulation carbon felt prepared by the dipping and sintering method in this embodiment is made according to the following method:

[0057] (1) Prepare mixed solution: choose Al 2 o 3 As the oxide infrared light reflective material used in this embodiment, Al 2 o 3 Aluminum alkoxide (specifically aluminum isopropoxide) is selected as the precursor of the aluminum alcoholate, and aluminum isopropoxide, phenolic resin, and industrial solvent industrial alcohol are mixed according to a mass ratio of 1:0.8:8.2 as a mixed solution (aluminum isopropoxide accounts for mass percentage 10%, phenolic resin accounted for 8% by mass), stirred evenly for 30min, that is to form Al 2 o 3 A mixed solution of precursors;

[0058] (2) Impregnation treatment: the cured carbon felt matrix to be treated (the density of the carbon felt is 0.30g / cm 3 ) placed in the Al prepared in step (1) 2 o 3 The impregnation is carried out in the mixed so...

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Abstract

The invention provides oxide infrared light reflection insulation carbon felt prepared through a dipping and sintering method and application of the oxide infrared light reflection insulation carbon felt. The oxide infrared light reflection insulation carbon felt is prepared through the following steps: (1), preparing a mixed solution : preparing the mixed solution containing a precursor of an oxide infrared light reflection material, resin and alcohol; (2), dipping: dipping a matrix material in the solution obtained in the step (1); (3), drying: carrying out drying treatment or centrifugal dewatering drying treatment on the matrix treated in the step (2); (4), sintering: sintering the matrix treated in the step (3) at high temperature, carrying out carbonized decomposition on the precursor of the oxide infrared light reflection material so as to decompose the precursor of the oxide infrared light reflection material into the oxide infrared light reflection material, and adhering the oxide infrared light reflection material onto a matrix carbon skeleton so as to enable the oxide infrared light reflection material to change into a nano crystallization state from an amorphous state. By adopting the oxide infrared light reflection insulation carbon felt provided by the invention, diffuse reflection of infrared light can be realized, so that energy conservation and consumption reduction of an insulation thermal field are realized.

Description

technical field [0001] The invention relates to an oxide infrared light reflection heat preservation carbon felt and its application, in particular to an oxide infrared light reflection heat preservation carbon felt prepared by a dipping and sintering method and its application, which belongs to the technical field of heat preservation heat field materials. Background technique [0002] High-temperature thermal furnace is a common industrial equipment, mainly through heating, so that the properties of the processed material will change in high-temperature environment, such as recrystallization, sintering, diffusion, etc., and it is mostly used for crystal, ceramics, metals and other materials According to different materials, the working temperature ranges from 400°C, 500°C to 3000°C. There are a large number of high-temperature furnaces in all walks of life, and the average thermal efficiency is about 30%, which means that more than half of the heat is wasted due to the poo...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/622
Inventor 吕保善赵丽丽吕铁铮
Owner 哈尔滨科友半导体产业装备与技术研究院有限公司