Ultrathin photovoltaic rolled glass

Abstract

The invention discloses ultrathin photovoltaic rolled glass. The ultrathin photovoltaic rolled glass comprises the following oxides by mass percentage: 71.0-73.18% of SiO2, 8.0-8.50% of CaO, 3.50-4.50% of MgO, 1.35-2.8% of Al2O3, 13.30-14.0% of Na2O, 0.6-1.0% of B2O3, 0.05-0.18% of Sb2O3, 0.05-0.1% of CeO2 and 0.01-0.012% of Fe2O3. According to the content of the oxides, the raw materials are compounded, and the photovoltaic rolled glass of which the thickness is less than 2.0 mm is prepared by founding, rolling forming and annealing processes; a glass component system is optimized, the B2O3 is introduced to reduce the glass expansion factor and increase the glass refractive index so as to play the fluxing action; the CeO2 and nitrate perform the combined action, so the clarification and decoloration effects are improved, the drawability of the glass is enhanced, and the plasticity of the photovoltaic rolled glass is improved; and the content of the Al2O3 and MgO is high, and the frit performance is improved. The final performance can satisfy the high-transparent and high-speed formability requirements of the industrial production of the photovoltaic glass of which the thickness is less than 2.0 mm, the production cost is saved, and the industrial production of the light and thin photovoltaic glass is realized.

Description

technical field [0001] The invention relates to the technical field of photovoltaic rolling glass, in particular to an ultra-thin photovoltaic rolling glass. Background technique [0002] Under the trend of increasing energy unaccountability and people's awareness of environmental protection, the global solar photovoltaic industry has developed rapidly. Photovoltaic power generation is the third largest energy utilization in my country's renewable energy after nuclear power and wind power. The embossed glass used in the photovoltaic crystal-silicon double-glass module is used as the cover glass, which has the characteristics of low iron and high transmittance. Photoelectric conversion efficiency of solar cells increases power generation. With the continuous development of the photovoltaic industry, higher requirements are placed on the production technology of photovoltaic glass. In the future, photovoltaic glass will develop in the direction of thinner and thinner, breakin...

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Problems solved by technology

[0003] At present, the photovoltaic glass industry generally uses Na 2 O-CaO-SiO 2 Photovoltaic glass is prepared by system. The thickness of the prepared solar photovoltaic glass is basically 3-3.2mm, which cannot meet the molding requirements of the calendering process with a thickness of less than 2.0mm, and the composition is complex, which increases production costs and does not meet the requirements of industrial production.

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