Nanoscale heat insulating material

A thermal insulation material, nano-scale technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of high thermal conductivity and inability to meet thermal insulation performance, etc., and achieve the effects of low cost, simple production and easy to obtain.

Inactive Publication Date: 2010-05-12
刘礼龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing high-temperature insulation boards generally use glass wool, rock wool, and ceramic fibers (thermal conductivity λ≤0.15W/mK 600°C, λ≤0.20W/mK 800°C) as heat insulation materials, and the existing problems are : Due to the large thermal conductivity of glas

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A nano heat insulating material, its composition and weight percentage are respectively:

[0031] 5-95% silicon dioxide powder of 5-200 nanometer scale;

[0032] Silicon carbide powder of 5-200 nanometers or 3-10 microns 5-30%

[0033] 5-200 nanometer or 3-10 micron zirconia powder or zirconium silicate powder 5-30%

[0034] Fiber for reinforcement 3~15%

[0035] Add solvent to the rest to 100%.

[0036] The preparation method is:

[0037] Mix silicon dioxide powder, silicon carbide powder, zirconium dioxide powder or zirconium silicate powder with reinforcing fibers in a dry state according to the weight ratio, add a solvent, and stir evenly to form a wet mixture; the powder mixing adopts the current market Planetary forced stirring mixer or conical stirring mixer used on the Internet or similar mixing methods such as stirring rod mixer, and then add solvent to mix into wet material, and extrude it into a certain shape billet with extrusion machinery , or directly...

Embodiment 2

[0042] A nano heat insulating material, its composition and weight percentage are respectively:

[0043] The nano-scale inorganic powder is nano-silica or fumed silica powder, the particle size of which is 5-200 nanometers, and the dosage is 5-95% (by weight), preferably 20-70% (by weight);

[0044] Nano-scale or micron-scale zirconium dioxide powder or nano-scale or micron-scale zirconium silicate powder, the particle size is 5-200 nanometers or 3-10 microns, and the dosage is 5-50% (by weight), preferably 15-35%;

[0045] Nanoscale or micronscale aluminum oxide powder, the particle size of which is 5-200 nanometers or 3-10 microns, and the dosage is 5-30% (weight), preferably 8-15% (weight);

[0046] The dosage of reinforcing fiber is 3-15% (weight).

[0047] Mix nano-scale silica or fumed silica powder, zirconium dioxide powder or zirconium silicate powder, and aluminum oxide powder with reinforcing fibers in a dry state according to the weight ratio, add solvent, and the...

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PUM

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Abstract

The invention relates to a nanoscale heat insulating material, comprising the following components in weight percent: 5-95% of nanoscale silicon dioxide powder, 5-50% of nanoscale or micro-sized zirconium dioxide powder or zirconium silicate powder and/or silicon carbide powder, 3-15% of reinforced fibre and adding the solvent to 100%. The invention is characterized by easily-obtained raw materials, simple production, low cost and the like, no need of special device; as for the prepared nanoscale heat insulating material, the density is 100-500Kg/m3, the heat conduction coefficient is 0.030-0.055W/mK at 800 DEG C and is much lower than that of the ceramic fibre with the heat conduction coefficient being 0.12-0.20W/mK at 800 DEG C, thus being an excellent nanoscale heat insulating material with broad application prospect and being widely applied to each aspect of heat insulating and energy saving fields of high temperature heat insulation, low temperature heat insulation, cold insulation and the like.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, in particular to a nanoscale thermal insulation material. Background technique [0002] my country is a big energy consuming country. The annual energy consumption is equivalent to 1.5 billion tons of standard coal, of which about 40% is the energy consumption of industrial equipment. At present, the country has formulated a series of laws and regulations on energy-saving buildings in order to reduce the energy consumption of industrial equipment. One of the ways to reduce the energy consumption of industrial equipment is to install heat insulation boards in the industrial equipment, and use the heat insulation board to wrap the industrial equipment to reduce the energy consumption of the equipment. [0003] Existing high-temperature insulation boards generally use glass wool, rock wool, and ceramic fibers (thermal conductivity λ≤0.15W / mK 600°C, λ≤0.20W / mK 800°C) as heat insulation ma...

Claims

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Application Information

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IPC IPC(8): C09K3/00
Inventor 刘礼龙
Owner 刘礼龙
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