A kind of preparation method of airgel composite material

A composite material and aerogel technology, which is applied in the field of composite material preparation, can solve the problems of difficult mixing of aerogel and resin, achieve large size and light weight, improve utilization rate, and realize the effect of uniform distribution

Active Publication Date: 2020-10-27
CHANGSHA XINGNA AEROGEL
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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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  • A kind of preparation method of airgel composite material

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. In addition, those skilled in the art can make corresponding combinations of features in the embodiments in this document and in different embodiments according to the descriptions in this document.

[0023] Embodiments of the present invention are as follows, a method for preparing an airgel composite material, comprising the following steps:

[0024] (1) Mix resin powder and airgel evenly;

[0025] (2) Lay a layer of mixture on the mold substrate;

[0026] (3) Using a laser in a step-scanning manner, the obtained mixture is rapidly heated until the resin powder in it melts and the airgel does not melt;

[0027] (4) Repeat step (2) and step (3) alternately on the previous deposition layer;

[0028] (5) Curing to o...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/08C04B26/02C04B20/00C04B20/02C04B40/02C04B40/00
CPCB29C67/00C04B20/0036C04B20/023C04B26/02C04B38/085C04B40/0017C04B40/0222C04B2201/32
Inventor 卢梦言卢军卢孟磊张丁日卢斌
Owner CHANGSHA XINGNA AEROGEL
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