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Light high-efficiency multilayer heat insulation material and preparation method thereof

A multi-layer heat insulation material and heat insulation material technology, applied in the direction of chemical instruments and methods, layered products, flat products, etc., can solve problems such as high cost and complicated process, and achieve improved integrity, toughness, and low thermal conductivity , the effect of high-efficiency heat insulation protection

Active Publication Date: 2019-11-05
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many problems such as complex process and high cost.

Method used

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  • Light high-efficiency multilayer heat insulation material and preparation method thereof
  • Light high-efficiency multilayer heat insulation material and preparation method thereof

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preparation example Construction

[0029] In a first aspect, the present invention provides a method for preparing a light-weight and high-efficiency multilayer thermal insulation material, the method comprising the following steps:

[0030] (1) The fiber preform is impregnated with the sol to obtain an airgel composite material; the fiber preform is preferably selected from glass fiber, high silica fiber, basalt fiber, quartz fiber, aluminum silicate fiber, alumina fiber and mullite fiber, that is, in the present invention, the fiber preform is preferably made of glass fiber, high silica fiber, basalt fiber, quartz fiber, aluminum silicate fiber, alumina fiber and One or more (two or more) fibers in the mullite fiber; in the present invention, the fiber preform can be made into forms such as cotton felt, needle felt, fiber blanket, etc.; more Preferably, the fiber preform is made of fibers selected from the group consisting of glass fibers (low-cost glass fibers), high silica fibers and basalt fibers; in the p...

Embodiment 1

[0052] The lightweight and high-efficiency multi-layer thermal insulation material used at medium temperature is prepared according to the invention. Airgel uses fiber preforms to impregnate sol precursors at normal temperature and pressure, and is formed by a sol-gel process. The fiber preforms are made of glass fiber mats, and the sol precursors are composed of tetraethyl orthosilicate, solvents, water, and catalysts. The fiber cloth is made of two-dimensional weaving of glass fiber yarn (the linear density of the glass yarn is 30tex, and the twist is 70T / M). The reflective film is made of polyimide aluminized film, and the thickness of the reflective film is 25 μm. KH-CL-RTV room temperature vulcanized silicone rubber adhesive.

[0053] ① Firstly, the glass fiber is mixed and molded into a glass fiber mat (fiber prefabricated body is provided), and then the glass fiber mat is impregnated with a sol precursor composed of tetraethylorthosilicate, solvent, water, and a catalys...

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Abstract

The invention relates to a light high-efficiency multilayer heat insulation material and a preparation method thereof. The method comprises the following steps: (1) impregnating a fiber preform with sol to prepare an aerogel composite material; (2) wrapping and sewing the aerogel composite material prepared in the step (1) by using fiber cloth to obtain a thermal insulation material preform; and (3) bonding a reflection film on the surface of the thermal insulation material preform obtained in the step (2) to prepare the light high-efficiency multilayer thermal insulation material. The invention also provides the light high-efficiency multilayer heat insulation material prepared by the preparation method, and the material can carry out high-efficiency heat insulation protection on a targetstructure at room temperature -500 DEG C. The light high-efficiency multilayer heat insulation material and the preparation method thereof have simple preparation process and low cost, and are expected to be popularized and applied in the fields of low-temperature heat insulation and civil heat insulation in aerospace.

Description

technical field [0001] The invention relates to the technical field of heat insulation materials, in particular to a light-weight and high-efficiency multilayer heat insulation material and a preparation method thereof. Background technique [0002] Airgel is the most efficient heat insulation material found so far, and has been widely used in construction, metallurgy, aerospace and other fields. In response to the high temperature resistance of heat insulation materials in aerospace, airgel used in aerospace focuses on Research and development of high temperature resistance, for example, the research and application of airgel resistant to 1000 degrees, 1100 degrees, and 1200 degrees, but the improvement of temperature resistance means the need to use better raw materials and more demanding processes, followed by What comes is the increase in cost. The concept of focusing on quality over cost in aerospace is not applicable in the civilian field. The high cost of airgel limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/00B29C70/40B29C65/48B32B17/04B32B17/06B32B9/00B32B9/04B32B5/06B32B3/04B32B7/12B32B27/12B32B27/36B32B27/28B32B33/00
CPCB29C65/48B29C70/40B29D7/00B32B3/04B32B5/02B32B5/06B32B7/12B32B9/047B32B17/067B32B27/12B32B27/281B32B27/36B32B2260/021B32B2260/04B32B2262/10B32B2262/101B32B2307/304B32B2307/558B32B2605/18
Inventor 郭建业杨洁颖苏力军张丽娟裴雨辰李文静孙景景
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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