Vacuum heat-preserving plate for light building

Abstract

The invention relates to a vacuum heat-preserving plate for a light building. The vacuum heat-preserving plate comprises a low-density micro-porous inorganic heat-preserving layer, a core plate enhanced wrapping layer and a low-permeability air resistance film surface layer, is characterized by consisting of the low-density micro-porous inorganic heat-preserving layer, the core plate enhanced wrapping layer and the low-permeability air resistance film surface layer, and has a structure that the low-density micro-porous inorganic heat-preserving layer, the core plate enhanced wrapping layer and the low-permeability air resistance film surface layer are sequentially arranged from inside to outside. The low-permeability air resistance film surface layer is internally vacuumized. The low-density micro-porous inorganic heat-preserving layer consists of plant ash, silicon dioxide and glass staple fibers. The thickness of the low-density micro-porous inorganic heat-preserving layer is 7 to 30mm. The core plate enhanced wrapping layer is made of a non-woven fabric material. The weight of the core plate enhanced wrapping layer is 40 to 70g per square meter. The low-permeability air resistance film surface layer has a five-layer aluminum plastic composite structure. The thickness of the low-permeability air resistance film surface layer is 0.2 to 0.5mm. The vacuum heat-preserving plate has the advantages of light weight, convenience in transportation, environment friendliness, high heat-preserving performance, long service life, incombustibility, and A-grade fire resistance. Materials are easily obtained and low in cost.

Description

technical field [0001] The invention relates to a thermal insulation board, in particular to a vacuum thermal insulation board for light construction. Background technique [0002] In the prior art, the vacuum insulation board is composed of a vacuum bag made of a high-barrier vacuum film on the surface and a microporous core material inside. By increasing the internal vacuum degree, the heat transfer path of the gas is isolated, and the effects of heat insulation, heat preservation and energy saving are obtained. . In the construction of residential buildings, office places, etc., in order to achieve the purpose of energy saving and emission reduction, and to better insulate the building, it is necessary to install insulation boards on the outer walls of the buildings, and wrap the buildings with insulation boards. Thereby reducing the loss of heat energy in the building. With the increasing requirements for energy saving, traditional thermal insulation cannot meet the re...

AI Technical Summary

Problems solved by technology

With the increasing requirements for energy saving, traditional thermal insulation cannot meet the requirements of high efficiency, low carbon and energy saving. Vacuum insulation panels have been introduced into building thermal insulation due to their advantages of fire prevention, high efficiency and low carbon

[0003] At present, there are two types of core materials commonly used in vacuum insulation panels, one is fiber materials such as glass wool, aluminum silicate fiber, and ceramic fiber, and the other is silica powder materials. Most of them are used for heat preservation of electrical appliances and equipment due to high consumption, high cost, and short service life. Most of the vacuum insulation boards used in construction use silica powder as the core material.

However, building vacuum insulation panels made of silica powder have many shortcomings, such as heavy unit weight, lack of material resources, high vacuum requirements, and high cost, which need to be improved.

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