Preparation method of a surface-enhanced high-temperature-resistant nano-insulation material

A nano-insulation material and surface strengthening technology, applied in chemical instruments and methods, synthetic resin layered products, lamination devices, etc. Wide range of effects

Active Publication Date: 2016-06-01
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method can prepare surface-enhanced high-temperature-resistant nano-insulation materials, and the area in contact with the upper and lower molds can be formed according to the required size, but other surfaces cannot be formed with precise dimensions.

Method used

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  • Preparation method of a surface-enhanced high-temperature-resistant nano-insulation material
  • Preparation method of a surface-enhanced high-temperature-resistant nano-insulation material
  • Preparation method of a surface-enhanced high-temperature-resistant nano-insulation material

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 Shown is a schematic diagram of the surface-strengthened high-temperature-resistant nano-insulation material in Example 1 of the present invention. The high-temperature-resistant nano-insulation material to be prepared in this example is a part of a cylindrical structure, including an inner nano-insulation core material 1 And the surface reinforcement layer, the nano-insulation material is granular porous insulation material or fiber-reinforced airgel insulation material, the surface reinforcement layer includes a low-temperature surface 2 and other surfaces 3 except the low-temperature surface 2, wherein the low-temperature surface is inorganic The fiber cloth reinforces the resin, and the other sides are inorganic fiber cloth.

[0040] In this example:

[0041]The nano insulation material is compression molded SiO 2 Nanoparticle porous insulation material. Thickness is 30mm, density is 0.35g / cm 3 , the thermal conductivity is 0.023W / m·K.

[0042]...

Embodiment 2

[0055] The shape of the surface-reinforced high-temperature-resistant nano-insulation material in this embodiment is the same as in Example 1, including the inner nano-insulation material core material 1 and the surface strengthening layer, and the nano-insulation material is a granular porous insulation material or fiber-reinforced airgel In the heat insulating material, the surface strengthening layer includes a low temperature surface 2 and other surfaces 3 except the low temperature surface 2, wherein the low temperature surface is made of inorganic fiber cloth reinforced resin, and the other surfaces are made of inorganic fiber cloth.

[0056] In this example:

[0057] Nano insulation material is mullite fiber reinforced SiO 2 Airgel composites. The thickness is 35mm and the density is 0.2g / cm 3 , the thermal conductivity is 0.021W / m·K.

[0058] The low-temperature surface 2 in the surface reinforcement layer is made of inorganic fiber cloth reinforced resin, and the o...

Embodiment 3

[0069] The shape of the surface-reinforced high-temperature-resistant nano-insulation material in this embodiment is the same as in Example 1, including the inner nano-insulation material core material 1 and the surface strengthening layer, and the nano-insulation material is a granular porous insulation material or fiber-reinforced airgel In the heat insulating material, the surface strengthening layer includes a low temperature surface 2 and other surfaces 3 except the low temperature surface 2, wherein the low temperature surface is made of inorganic fiber cloth reinforced resin, and the other surfaces are made of inorganic fiber cloth.

[0070] In this example:

[0071] The nano insulation material is compression molded Al 2 o 3 Nanoparticle porous insulation material. Thickness is 40mm, density is 0.45g / cm 3 , the thermal conductivity is 0.03W / m·K.

[0072] The low-temperature surface 2 in the surface reinforcement layer is made of inorganic fiber cloth reinforced res...

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Abstract

The invention relates to a surface-reinforced high-temperature-resistant nanometer thermal insulation material and a preparation method thereof. The surface-reinforced high-temperature-resistant nanometer thermal insulation material comprises an internal nanometer heat insulating material and a surface reinforcement layer, wherein the nanometer heat insulating material is a compression-molded particulate porous heat insulating material or a fiber-reinforced aerogel heat insulating material prepared by adopting a sol-gel method through supercritical drying, the surface reinforcement layer comprises a low-temperature surface and remaining surfaces, the remaining surfaces are made of inorganic fiber cloths. The surface-reinforced high-temperature-resistant nanometer thermal insulation material prepared by adopting the method has higher strength and integrity, the internal structure of the material is not damaged, the heat insulating property and the usage temperature of the material are not influenced; in addition, the size forming accuracy of the appearance formed by adopting the method is high, and the method is suitable for situations requiring higher accuracy on the size of the heat insulating material.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a surface-enhanced low thermal conductivity and high temperature resistant nanoporous thermal insulation material and a preparation method thereof. Background technique [0002] Nanoporous insulation materials have the characteristics of low density, high specific surface area and high porosity, and their solid thermal conductivity is extremely low; their pore size is nanoscale (generally less than 100nm), which is lower than the mean free path of air molecules, and has extremely low The gas heat conduction; in addition, infrared radiation heat transfer can be suppressed by adding opacifiers and other means. Therefore, nanoporous thermal insulation materials have excellent thermal insulation properties and are known as "super thermal insulation materials". There are generally two ways to prepare nano-insulation materials, one is to use nano-powder, opacifying agent, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/26B32B27/04B32B27/12B32B9/04B32B33/00B32B38/18B32B37/15B32B38/16
Inventor 吴文军胡子君马蕾孙陈诚李俊宁宋兆旭
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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