Non-woven silicon-aluminum aerogel compound sandwich insulating fireproof board

Abstract

The invention provides a non-woven silicon-aluminum aerogel compound sandwich insulating fireproof board which is composed of an upper surface layer, a lower surface layer and a non-woven reinforced silicon-aluminum aerogel middle layer. The non-woven silicon-aluminum aerogel compound sandwich insulating fireproof board meets the installation requirement of integrated houses, can be cut freely and is convenient to construct and apply; fire resistance advantages of aerogel and a magnesium oxysulfate construction plate are combined, the dual effects of fire resistance and heat insulation are achieved, and the heat conductivity coefficient of an obtained product is improved by about three times compared with the prior art.

Description

technical field [0001] The invention relates to a thermal insulation and fireproof board, in particular to a nonwoven silicon-aluminum airgel composite sandwich thermal insulation and 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 insulat...

AI Technical Summary

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.

Images