High strength ultrathin float glass

Abstract

The invention discloses a kind of high strength ultrathin float glass, comprising the following ingredients: 60-62 wt% of SiO2, 12-15 wt% of Al2O3, 0.4-1.1 wt% of CaO, 6.5-8 wt% of MgO, 11-13 wt% of Na2O, 3-5 wt% of K2O, 1-1.2 wt% of Li2O, 0.5-1 wt% of ZnO, 1-1.5 wt% of B2O3, wherein, the total amount of SiO2, B2O3 and Al2O3 accounts for 73-76.5 wt%, the total amount of SiO2 and Al2O3 accounts for 72-75 wt%, the total amount of MgO and CaO accounts for 7-9 wt%, the total amount of Li2O, Na2O and K2O accounts for 15-18 wt%, and the molar ratio of n(K2O) to n(Na2O) is 0.15-0.3. The high strength ultrathin float glass has the characteristics of high chemical stability, high hardness, and large intensity, and simultaneously satisfies the special molding demands for ultrathin float glass.

Description

Technical field [0001] The invention relates to a float glass, in particular to a high-strength ultra-thin float glass. Even more specifically, the present invention relates to safety glass for windshield and high-end residential safety glass used for high-speed vehicles such as automobiles, ships, railway locomotives, and airplanes. technical background [0002] With the rapid development of the national economy, my country’s flat glass industry has entered a period of rapid expansion. The glass output has ranked first in the world for many years. There are more than 200 float glass production lines, but most of the products are ordinary float glass. Strong ultra-thin float glass cannot be produced yet. As a result, the production capacity of ordinary float glass is severely surplus, while high-quality, special and high-strength glass relies heavily on imports. The production capacity of the entire industry is out of control and the product structure is unreasonable. It also mak...

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Problems solved by technology

[0002] With the rapid development of the national economy, my country's flat glass industry has entered a period of rapid expansion. The glass output has ranked first in the world for many years, and the number of float glass production lines has reached more than 200. However, most of the products are ordinary float glass. Strong ultra-thin float glass is not

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