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A kind of ultra-high temperature thermal insulation composite material and preparation method thereof

A composite material, ultra-high temperature technology, applied in chemical instruments and methods, protective equipment, other household appliances, etc., can solve the problem of limited impact resistance of aerogel composite materials, temperature resistance not exceeding 1000 ° C, and inability to meet thermal protection. Demand and other issues, to achieve great application value, improve the bonding force between layers, and improve the effect of anti-vibration

Active Publication Date: 2017-02-22
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silica airgel material is a well-studied and relatively mature heat insulation material at present. It has excellent heat insulation performance in the temperature range of use, but the temperature resistance of this material does not exceed 1000°C, so it cannot be used for more Thermal insulation in high temperature environments, and airgel composites have limited impact resistance and cannot be used for thermal insulation in areas with impact damage
However, the existing thermal insulation protection materials cannot meet the thermal protection requirements in ultra-high temperature environments.

Method used

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  • A kind of ultra-high temperature thermal insulation composite material and preparation method thereof
  • A kind of ultra-high temperature thermal insulation composite material and preparation method thereof
  • A kind of ultra-high temperature thermal insulation composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Preparation of ultra-high temperature thermal insulation composite materials with a temperature resistance of 1600 °C.

[0057] The specific preparation process is as figure 2 shown in the following steps:

[0058] (1) Preparation of flexible high temperature insulation layer

[0059] Zirconia fiber, silicon carbide infrared blocking agent, and polyvinyl alcohol-coated zirconium sol are used as a dispersant (polyvinyl alcohol accounts for 5% by mass of the solid part of the zirconium sol, and the pH value of the solution is 3).

[0060] Proportion: the addition of silicon carbide infrared blocking agent is 20% of the weight of alumina fiber or zirconia fiber, and the dispersant accounts for 100% of the weight of alumina fiber or zirconia fiber;

[0061] After mixing and dispersing the zirconia fiber, silicon carbide infrared blocking agent and dispersant evenly, the dispersant is removed and dried to obtain a flexible high-temperature heat insulation layer with a thi...

Embodiment 2～10

[0067] The ratio is shown in Table 1, and all the other are the same as Example 1, and the performance is shown in Table 1.

[0068] Table 1

[0069]

[0070]

Embodiment 11

[0072] Preparation of ultra-high temperature thermal insulation composite materials with a temperature resistance of 1400 °C.

[0073] The specific preparation process is the same as in Example 1.

[0074] Flexible high-temperature insulation layer: alumina fiber, zirconia fiber or mullite fiber, silicon carbide infrared barrier, polyvinyl alcohol-coated aluminum sol as a dispersant (polyvinyl alcohol accounts for 10% of the mass of aluminum sol solids, The pH value of the solution is 2).

[0075] Proportion: the addition of silicon carbide infrared blocking agent is 20% of the weight of alumina fiber or zirconia fiber, the dispersant is 130% of the weight of alumina fiber or zirconia fiber, and a flexible high-temperature heat insulation layer of 5mm is prepared .

[0076] The medium and low temperature insulation layer is made of mullite fiber reinforced silica airgel material, mullite fiber fabric is used for the high temperature side, mullite, quartz, aluminum silicate f...

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Abstract

The invention provides an ultrahigh-temperature heat-insulating composite material and a preparation method thereof. According to the invention, a multilayer structure with a form of Z-G-Q-Z is adopted, wherein the Zs are high-temperature-resistant fibrous textile fabrics; the G is a flexible high-temperature heat-insulating layer; the Q is a low-medium-temperature heat-insulating layer; the multilayer structure is sutured into a whole through a high-temperature-resistant suture line; the flexible high-temperature heat-insulating layer is a fiber mat which is molded from high-temperature-resistant fibers and an infrared barrier agent with an inorganic sol as a high-temperature binder according to a wet method; and the low-medium-temperature heat-insulating layer is a fiber-reinforced aerogel material. According to the invention, the flexible high-temperature heat-insulating layer is compounded with the low-medium-temperature heat-insulating layer and the high-temperature-resistant fibrous textile fabrics are sutured on the upper and lower surfaces of the compounded layers, so the material has the advantages of high-temperature resistance, highly-efficient heat-insulation performance and excellent anti-vibration and anti-shock properties.

Description

technical field [0001] The invention relates to an ultra-high temperature thermal insulation composite material and a preparation method thereof, belonging to the technical field of thermal insulation materials. Background technique [0002] Airgel is a lightweight nanoporous material formed by the condensation of colloidal particles. The effect is greatly reduced, and at the same time, the accumulation of nanoparticles into an infinitely long path also effectively weakens the heat conduction effect of the solid. Based on the excellent inhibition effect of the airgel material on the solid and gaseous conduction, it is currently known as the lowest thermal conductivity. A solid material. Silica airgel material is a well-studied and relatively mature heat insulation material at present. It has excellent heat insulation performance in the temperature range of use, but the temperature resistance of this material does not exceed 1000°C, so it cannot be used for more Anti-therma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04B32B17/02B32B7/08C04B30/02
CPCB32B9/047B32B33/00B32B2250/04B32B2307/304B32B2307/306B32B2307/558B32B2571/00
Inventor 张凡贺剑郭慧宋寒刘斌裴雨辰张迪鲁胜苏力军李文静
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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