Double-vacuum-layer metal vacuum composite plate with getter, and preparation method thereof

Abstract

The invention relates to a double-vacuum-layer metal vacuum composite plate with a getter. The composite plate comprises a housing, core plates, and a vacuum cavity. The plate is characterized in that the housing is a metal plate or a metal composite plate. The core plates are positioned in the vacuum cavity for providing additional strength for the housing and for ensuring the flatness of the housing under atmospheric pressure. The vacuum cavity is a sealed cavity formed by welded edge-sealing of the housing under normal pressure and high-pressure port-sealing of the housing under vacuum. During the port-sealing process, an air-exhaust port preformed on the housing is automatically sealed by using a low-temperature solder in a vacuum furnace, according to a liquid sealing principle. A separation plate is provided in the vacuum cavity for dividing the vacuum cavity into two vacuum layers. Supporters are provided in the vacuum layers. The preparation method provided by the invention have simple process. With the prepared double-vacuum-layer metal vacuum composite plate with getter, defects of existing thermal insulation plates and vacuum thermal insulation plates can be overcome. Strength, thermal insulation performance, sound insulation performance, fire resistance and decoration function can be improved.

Description

technical field [0001] The invention relates to the technical field of building energy saving, in particular to a double-vacuum-layer metal vacuum composite board 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 ...

AI Technical Summary

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.

Images