Metal vacuum insulated panel and preparation method thereof

Abstract

The invention provides a metal vacuum insulated panel which comprises a shell, core materials and vacuum chambers. The metal vacuum insulated panel is characterized in that the shell is a metal panel or a metal composite panel. The core materials are located in the vacuum chambers formed by welding the shell in a sealing mode and provide additional strength for the shell, so that smoothness of the shell under atmospheric pressure is guaranteed. The vacuum chambers are massively automatically welded and sealed in a vacuum furnace under high vacuum and high temperature. A preparation method of the metal vacuum insulated panel is simple in process, the prepared metal vacuum insulated panel can overcome the defects of an existing heat preserving panel and an existing vacuum insulated panel, therefore, air tightness of the vacuum chambers of the metal vacuum insulated panel can be effectively guaranteed, the service life of the metal vacuum insulated panel is prolonged, strength can be increased, and the heat insulation, sound insulation and fireproof performance and the decorative function can be increased.

Description

technical field [0001] The invention relates to a vacuum heat insulation panel, in particular to a metal vacuum heat insulation panel 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 cause secondary fires and secondary fires. ...

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 difficult drying of the core material, poor air tightness of the vacuum bag, low puncture resistance, high moisture content of the core material, fast vacuum attenuation, easy expansion of the bag, short insulation life, etc.

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