Double vacuum layer composite vacuum plate with degassers and preparation method of double vacuum layer composite vacuum plate

Abstract

A double vacuum layer composite vacuum plate with degassers comprises a panel, a core plate and a vacuum cavity, and is characterized in that the panel is fixed on the upper surface at the outer part of the vacuum cavity; the core plate is placed at the bottom in the vacuum cavity; the panel and/or the core plate provide (s) additional strength for the vacuum cavity, and ensure (s) the smoothness of the vacuum cavity under the atmospheric pressure; the vacuum cavity is a closed cavity formed in such a way that a metal plate is subjected to welding and edge sealing under the normal pressure and sealing at a high temperature in vacuum; the sealing is achieved through automatically sealing an extraction opening, prefabricated in the vacuum cavity, in a vacuum furnace by low-temperature solder according to a liquid sealing principle; a clapboard is arranged in the vacuum cavity, and divides the interior of the vacuum cavity into double vacuum layers; and struts are arranged in the vacuum layers. The double vacuum layer composite vacuum plate has the advantages that the preparation method is simple in process, the prepared double vacuum layer composite vacuum plate with the degassers can overcome defects of a conventional insulation board and a conventional vacuum insulation board, and the strength, the heat insulation performance, the sound insulation performance, and the fire resistance and the decoration performance can be enhanced.

Description

technical field [0001] The invention relates to the technical field of building energy conservation, in particular to a double-vacuum-layer composite vacuum panel with a getter and a manufacturing method thereof. Background technique [0002] my country's building energy consumption has accounted for more than 1 / 3 of the energy consumption of the whole society, and it is increasing year by year. The use of thermal insulation building materials is one of the main means to reduce building energy consumption. At present, many materials used for building exterior wall insulation are Class B insulation materials, such as polystyrene, polyurethane, foam rubber and other organic materials. These organic materials have poor heat resistance and are easy to burn. A large amount of toxic smoke can accelerate the spread of the fire; at the same time, organic materials will shrink during a fire, producing burning droplets, causing the tiles on the insulation layer to fall off, which may ...

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Problems solved by technology

At present, many materials used for building exterior wall insulation are Class B insulation materials, such as polystyrene, polyurethane, foam rubber and other organic materials. These organic materials have poor heat resistance and are easy to burn. A large amount of toxic smoke can accelerate the spread of the fire; at the same time, organic materials will shrink during a fire, producing burning droplets, causing the tiles on the insulation layer to fall off, which may cause secondary fires and secondary fires. harm, so the relevant state departments explicitly prohibit the use of organic insulation materials for external wall insulation, especially in high-rise buildings and public buildings

Among the thermal insulation materials whose combustion performance reaches the A-level standard, inorganic materials represented by mineral wool and rock wool are mainly used. However, the existing domestic products have a large gap with the requirements of architectural applications in terms of water absorption, strength, and weather resistance. If it is directly used for building wall insulation, there will be problems such as water absorption, falling, softening, etc.

In addition, the cost of Class A thermal insulation materials is much higher than that of organic materials, and the construction process is complicated. The construction cost far exceeds the cost of Class B thermal insulation materials, and its thermal insulation performance is poor and energy consumption is high, which cannot meet the current needs of the country for energy conservation and emission reduction.

[0003] Vacuum insulation panels are a new type of insulation material developed in recent years, mainly including vacuum bags and core materials. There are obvious disadvantages such as difficulty in drying the core material, poor air tightness of the vacuum bag, low puncture resistance strength, fast vacuum decay, easy bag expansion, short heat preservation life, etc.

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