Infrared isolated heat-absorption float glass

Abstract

An infrared isolated heat-absorption float glass relates to the field of float glass. The glass is basically composed of SiO2, Na2O, K2O, CaO, MgO, Al2O3, total iron calculated according to Fe2O3, SnO2, ZnO, TiO2, total cerium calculated according to CeO2, and SO3, wherein the weight of the total iron calculated according to Fe2O3 is 0.5-1.0% and the preferable weight of the total iron is 0.6-0.8%; the weight of SnO2 satisfies the formula Fe2O3: SnO2=1: 1.6-3.0 with the preferable formula being Fe2O3: SnO2=1: 2.2-2.6; the weight of ZnO satisfies the formula SnO2: ZnO=1: 0.4-2.5 with the preferable formula being SnO2: ZnO=1: 1.2-2.2; and the weight of the total cerium calculated according to CeO2 satisfies the formula Fe2O3: CeO2=1: 0.005-2.7. The glass has excellent heat absorption property. When the glass thickness is 3-5mm, the transmittance at the wavelength of 1050nm is less than or equal to 15%, and the transmittance at the wavelength of 1300nm is less than or equal to 20%. In the meanwhile, the transmittance of visible light is greater than 50%, and the direct solar transmittance (Te) is less than 40%. Therefore, the glass provided by the invention can isolate the heat energy of sunlight, has an effect of energy saving, and can be widely applied in structural glass, automobile glass and the like.

Description

technical field [0001] The invention relates to the field of float glass, in particular to an infrared-insulating heat-absorbing float glass with low infrared transmittance and high visible light transmittance. Background technique [0002] In the context of global climate change, cities are facing the dual challenges of economic development and reduction of greenhouse gas emissions. Unswervingly following the road of low-carbon development is an inevitable strategy to achieve resource conservation and environmental protection. Glass is an important part of buildings and automobiles. Components absorb heat through glass and isolate the heat of sunlight, which can achieve energy-saving effects. Usually, the original sheet of automotive glass is float glass, and the weight percentage of oxides in the composition of float glass is usually SiO 2 : 65~75%, Na 2 O: 10-15%, K 2 O: 0~3%, CaO: 5~15%, MgO: 2~8%, Al 2 o 3 : 0~3%, SnO 2 0~4%, ZnO 0~4%, TiO 2 : 0~1.5%, according t...

AI Technical Summary

Problems solved by technology

In glass composition, total iron Fe 2 o 3 2.4~2.6%, SnCl 2 2 to 4%, ZnO 5.5 to 6.0%, the total iron content of the glass composition is very high, and a high melting point is required. In addition, SnCl 2 The melting point is 246°C. During the production process, it is difficult to make the glass composition contain SnCl 2 , so it is difficult to implement

[0008] In summary, the existing heat-absorbing glass technology, or the heat-absorbing performance is not good, such as Japan's Central Glass in 200480031885.6, the US PPG patent 97104961.0, Shanghai Yaohua Pilkington Glass Co., Ltd.'s patent 03117080.3; or it is difficult Implementation, for example, embodied in patent 201010183791.8 of Inner Mongolia University of Science and Technology and patent 200910154301.9 of Cai Xuzhong

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