Nanoscale heat insulating material

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...

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 glass wool, rock wool, ceramic fiber and other materials, they cannot meet the higher thermal insulation performance requirements. In order to achieve higher thermal insulation requirements, the thermal conductivity of existing thermal insulation materials is relatively large.