Construction method of vacuum insulation plate wall body

Abstract

The invention relates to a vacuum insulation plate fixing device and a construction method. The vacuum plate and a building wall body are combined into a whole through main working procedures of spraying and leveling, spraying and sticking, spraying and protecting and the like. The vacuum insulation plate fixing device and the construction method have good protective performance to the vacuum plate. Service life of the vacuum plate is prolonged, thus the vacuum plate has the integrity and good resistance to shock. The cold bridge problems of the seams, head and tail, blank points of the vacuum plate and the like are solved, thus uniformity and consistency of heat preservation of the whole wall body are improved by more than 75%. The problem that a breakage rate of the vacuum plate is high is solved, thus the construction with high difficulty and complexity is enabed to be simple and rapid.

Description

Technical field: [0001] The invention relates to a construction method of a wall body of a vacuum insulation board used for heat preservation of an external wall of a building. Background technique: [0002] Due to its very low thermal conductivity of 0.008-0.015 W / m.k, vacuum insulation panels are gradually being used in building wall insulation. The research on vacuum insulation panels began in 1972, mainly in Europe, Japan and other countries. At present, it has been widely used in refrigerators and refrigeration industries. European countries have started to apply it in construction three years ago. The tracking and testing results of the model project in Munich, Germany show that the annual energy consumption of vacuum panels for insulation projects is only 1 / 10 of the average energy consumption of the city of Munich. [0003] The excellent thermal insulation performance of vacuum panels has led to mass application in the domestic construction industry. According to f...

AI Technical Summary

Problems solved by technology

[0004] Vacuum insulation boards are used in external wall insulation. They have good insulation performance, but they also have great defects: 1. Vacuum insulation boards are mainly made of inorganic materials such as carbon tetrachloride dry powder and mixed glass fiber materials, which are packed in aluminum foil bags. It is made by vacuuming. After vacuuming, the aluminum foil bag and the core material are combined by vacuum suction. Because the aluminum foil glass fiber cloth is very thin, it is easy to be damaged during transportation, especially during the construction process. After air leakage, the vacuum insulation board The thermal conductivity of cement can be increased to 0.98w / m.k-1.23w / m.k, which exceeds the thermal conductivity of cement, thus losing the significance of the insulation board

The use of large-area exterior walls requires the splicing of thousands of vacuum panels, and a large number of aluminum foil joints will cause a large number of cold bridges, which will deteriorate the overall thermal insulation coefficient and uniformity of the wall.

3. The vacuum board cannot be cut, and there are no vacuum boards of suitable size and shape for the doors, windows, corners, convex and concave places, the head and tail of the splicing, etc., leaving a lot of space and seams

Because the quality of the material of the vacuum board is aluminum foil with a thickness of a few tenths of a millimeter, the inorganic powder is wrapped, and the solid is formed by the vacuum degree, and it is easy to be destroyed under stress.

At present, the construction technology and method of vacuum panels have greatly increased the material cost and labor cost, and the construction difficulty and complexity are very high.

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