High-performance thermal insulation material and preparation method thereof

Abstract

The invention provides a high-performance thermal insulation material and a preparation method thereof. The thermal insulation material comprises silicon dioxide aerogel and a fiber material, wherein, the silicon dioxide aerogel takes silicon dioxide hydrosol as a raw material, and is prepared by adding a catalyst. The method comprises the following steps: sol preparing, sol dipping, gelating, gel ageing, hydrophobization treating and drying and the like. The method can conveniently and selectively prepare the materials of planes, abnormal-shape surfaces and multiple sizes, has simple and convenient operation and small environmental pollution. The material has excellent mechanical performance, good high-temperature stability and heat insulation performance, and has wide application prospect in the fields of civilian industries, space flight and aviation industries, military industries and the like.

Description

technical field

[0001] The invention relates to the field of functional materials, in particular to a fiber-reinforced airgel heat insulating material and a preparation method thereof. Background technique

[0002] With the rapid development of human economic life, human demand for energy is increasing. However, at present, the energy used by human beings is mainly non-renewable energy, and energy shortage has become an important obstacle restricting human development. Therefore, reducing energy consumption and saving energy has become the goal that human beings need to work together.

[0003] Thermal insulation material technology is a very efficient and low-cost energy-saving technology, which has important uses in many fields. For example, in the field of construction, the use of thermal insulation materials can reduce energy consumption caused by the use of air-conditioning refrigeration or heating; in the field of smelting industry, the use of fiber-reinforced airgel ...

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