Glass cotton and silica-alumina aerogel composite sandwich thermal-insulating and fireproof board

Abstract

The invention provides a glass cotton and silica-alumina aerogel composite sandwich thermal-insulating and fireproof board. The composite sandwich thermal-insulating and fireproof board is composed of an upper face layer, a lower face layer and a glass cotton-strengthened silica-alumina aerogel middle layer. The aerogel composite sandwich thermal-insulating and fireproof board meets the installation requirement of an integrated house, is capable of being cut freely and convenient to construct and apply, combines the fireproof advantages of aerogel and a magnesium oxysulfate structure board and has the double effects of fire prevention and thermal insulation, and the thermal conductivity coefficient of the prepared product is increased by about three times compared with the prior art.

Description

technical field [0001] The invention relates to a thermal insulation fireproof board, in particular to a glass wool silicon aluminum airgel composite sandwich thermal insulation fireproof board. Background technique [0002] Airgel is the material with the lowest thermal conductivity among solid substances, which is only slightly higher than vacuum, about 0.013W / m·K. Airgel also has an extremely low density, which is recognized as the least dense solid in the world, and the lowest density can reach 3kg / m 3 , which is slightly denser than air. Therefore, airgel is the thermal insulation material with the best thermal insulation effect and the smallest density in the world. [0003] The main component of silica airgel is silicon dioxide, which has excellent high temperature and low temperature resistance, and the fire resistance temperature can be as high as 1000 degrees. Therefore, compared with traditional organic insulation materials (polyurethane, XPS, EPS insulation bo...

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Problems solved by technology

[0006] 1. The core material adopts organic insulation materials such as EPS, XPS, polyurethane, etc., and the protection level is low. The best fire-resistant temperature is around 180°C, and it is easy to release toxic substances after fire, and the VOC emission is too high;

[0007] 2. Rock wool has a high level of thermal insulation and fire protection, which can reach Class A fire protection, but rock wool has a high water absorption rate, and it is easy to lose its thermal insulation effect, and rock wool is easy to fall off after absorbing water, causing safety accidents and bringing safety hazards to residents and pedestrians;

[0008] 3. The panel is made of color steel or calcium silicate board. In the case of fire, the heat transfer is fast and it is easy to cause the internal insulation material to burn

[0009] Chinese Patent No. CN204826264U discloses an airgel composite sandwich fire-proof and heat-insulating board. Although the fire-proof and heat-preservation performance of the composite board has been improved, the fire-proof and heat-preservation performance of the sandwich layer is still limited.

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