Vacuum technology is analysed and new building materials

in the modern school buildings, there is a call 'light school of architecture. ' Almost all of the building by light part with glass as the 'wall'. Therefore, puts forward two requirements on building glass: one is beautiful; Second, energy saving.

in the tropical and subtropical regions near the equator low latitudes, illumination time is very long. If you use the building without coating glass, solar energy from outside to inside through the glass to 85%, which greatly increased the cost of indoor air conditioning. If on architectural glass coating a layer of the sun control film, the transmission power can be reduced to 17%. This sun control film is under vacuum conditions in transparent or coloured glass surface plating on a part of the transparent layer of metal film, such as chromium, nickel, titanium, stainless steel and high alloy steel. It can improve the reflectivity of visible light range and absorption rate, to reduce the energy from the external to the building.

in the northern temperate and cold regions, if there is no double insulating glass coating use, 80% of the interior energy through the glass to the outside. For example, if the inner surface of the double-layer hollow glass membrane coating with low radiation, the heat loss can be reduced to 40%. Indium tin oxide film is the ideal choice for this kind of low radiation film, the visible light transmittance about 75%, the infrared reflectivity of 90%.

apart from the above shade film and insulation film, still have a kind of 'sunshade heat insulation membrane layer. This kind of thin film materials can choose from three metals: gold, silver and copper. Usually, metal sandwiched between two layers of oxide, in order to improve the bonding strength and protection of metal coating. With high transmittance in the visible scope, has high reflectivity in infrared range.