Glass outer protective film for cold environments

Abstract

The invention discloses a glass outer protective film for cold environments, and belongs to the technical field of building glass. The glass outer protective film for the cold environments comprises afilm bonding glue layer, an elastic reset clamping layer is arranged on the right side of the film bonding glue layer, the film bonding glue layer can be adhered onto outer glass for the cold environments, influence of glass internal stress on glass is reduced when inner and outer temperature difference is large, breaking and cracking of the glass are decreased under large inner and outer temperature difference, four corners of the glass are adhered and fixed, so that the glass is naturally in an internal tension state, the glass has inward stress, the inward stress is within a controllable range, outer stress of the glass is offset after deformation of the outer glass caused by temperature difference, influence of the inner temperature on the glass stress is blocked, inner and outer temperature difference of the outer glass is reduced, the outer glass changes colors and reflects light after being irradiates to be heated, and increasing of outer stress caused by high temperature is decreased.

Description

technical field [0001] The invention relates to the technical field of architectural glass, and more specifically relates to a glass outer protective film for cold environments. Background technique [0002] Glass is an amorphous inorganic non-metallic material, generally made of various inorganic minerals (such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) of. Its main components are silicon dioxide and other oxides. The chemical composition of ordinary glass is Na2SiO3, CaSiO3, SiO2 or Na2O·CaO·6SiO2, etc. The main component is silicate double salt, which is an amorphous solid with irregular structure. Widely used in buildings, used for wind and light transmission, belongs to the mixture. There are also colored glass that is mixed with certain metal oxides or salts to show color, and tempered glass made by physical or chemical methods. Sometimes some transparent plastics (such as polymethyl methacrylate) are also call...

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Problems solved by technology

[0003] Glass is widely used in the windows of buildings. The glass composition generally contains stones, impurities, air bubbles, etc. inside. The impurities in the glass are the weak points of tempered glass and also the place of stress concentration, especially if the stones are under the tensile stress of tempered glass. area, it is very easy to cause the glass to burst as a whole. The stone exists in the glass, which has a different expansion coefficient from the vitreous body. After the glass is tempered, the stress concentration in the crack area around the stone increases exponentially. When the expansion coefficient of the stone is smaller than that of the glass, the stone around the stone The tangential stress is in a state of tension, and the crack expansion accompanied by stones is very easy to occur. At the same time, when there is a temperature difference between the inner and outer sheets of the glass, it is more likely to cause the stress deformation of the glass, and then cause the glass to break. When there is a temperature difference between the inner and outer sheets of the vacuum glass , the bending deflection and edge bending deflection of the glass spherical surface caused by the temperature difference are proportional to the length, width and bending radius of the vacuum glass. Tensile stress, which caused the vacuum glass to break close to the corner

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