A kind of thermal insulation board and preparation method thereof

Abstract

A heat-insulation and heat-preservation plate is characterized in that the heat-insulation and heat-preservation plate is constituted by a core part and a surface layer, wherein the core part is an aerogel / resin complex constituted by aerogel and resin bound with the aerogel, and the surface layer is a resin phase. A preparation method of the heat-insulation and heat-preservation plate mainly comprises the following steps that (1) piece laminating is conducted, specifically, the aerogel and resin powder are evenly mixed and then laid on a piece of transparent resin plate, and then the mixtureis covered with another piece of transparent resin plate, so that a combined body is obtained; and (2) hot-pressing forming is conducted, specifically, the combined body is subjected to hot-pressing forming under the certain temperature and pressure. The heat-insulation and heat-preservation plate has the good heat-insulation and heat-preservation properties, the good light transmitting property,the good safety and the good sound-insulation and noise-reduction property, and is suitable for the fields of door windows, curtain wall glass, daylighting roofs and the like of environment-friendly buildings, ultra-low energy consumption buildings and near-zero energy consumption buildings.

Description

technical field [0001] The invention relates to the technical field of energy-saving materials, in particular to a thermal insulation board containing airgel and a preparation method thereof. Background technique [0002] Airgel is a lightweight nano-solid material that aggregates nanoscale ultrafine particles to form a nanoporous network structure, and fills the network pores with a gaseous dispersion medium. Its porosity is as high as 99.8%, the typical size of pores is 1-40nm, and the specific surface area is 400-1200m 2 / g, while the density can be as low as 3kg / m 3 , the thermal conductivity at room temperature can be as low as 0.010W / (m•K), showing excellent light weight, light transmission, heat insulation, heat preservation, sound insulation, fire resistance, impact resistance, and excellent chemical stability and non-combustibility. It is precisely because of these characteristics that silica airgel materials have broad application potential in thermal, acoustic, ...

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Problems solved by technology

[0003] However, due to the complexity of the conventional sol-gel process and the extremely high comprehensive technical threshold for producing large-scale and complete transparent airgel sheets, it involves not only material technology, but also many technical fields such as process technology and process equipment technology, so , it is difficult to prepare large-sized intact airgel

In addition, because airgel is a brittle material with poor flexural strength, it cannot be used alone, but can only be used as a sandwich layer of insulating glass, which limits the application range of airgel in the field of transparent building envelopes to a certain extent. And because the glass is heavy, it will undoubtedly increase the load of the building, so that the building has certain safety hazards.

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