A kind of preparation method of airgel composite material

Abstract

The invention provides a preparation method for an aerogel composite material. The aerogel composite material is composed of an aerogel and a resin phase which is used for bonding the aerogel. The preparation method comprises the following steps: (1) mixing: uniformly mixing the aerogel with resin powder; (2) spreading: spreading a layer of a mixture obtained in the step (1) on the substrate of amold; (3) melting: rapidly heating the resin powder in the mixture obtained in the step (2) by using a laser in a step scan manner until the resin powder is molten; (4) alternate spreading and melting: alternately repeating the step (2) and the step (3) on a former deposition layer; and (5) curing. The aerogel composite material disclosed by the invention has good heat insulation performance, light transmittance, safety performance, sound insulation performance and noise reduction performance, and is applicable to the field of doors and windows, curtain wall glass, lighting roofs and the likeof green buildings, ultralow-energy-consumption buildings and near-zero-energy-consumption buildings and to the fields of artistic glass and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of composite materials, in particular to a preparation method of airgel composite materials. 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, optical, microel...

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Problems solved by technology

[0004] In order to obtain a large-sized, high-strength and light-weight building energy-saving material with excellent thermal insulation properties, the solution of the present invention is as follows: (1) Use transparent thermal insulation airgel with silicon hydroxyl on the surface and hydrophobic properties inside Technology to solve the problem that airgel and resin are difficult to mix

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