Zinc phosphorus aluminum silicate glass with high strain point, fast ion exchange function and weak-acid resistance

Abstract

The invention discloses zinc phosphorus aluminum silicate glass with a high strain point, fast ion exchange function and weak-acid resistance. The glass is prepared from the following ingredients in percentage by mass: 56 to 65 percent of SiO2, 17 to 22 percent of Al2O3, 10 to 16 percent of Na2O, 0 to 1 percent of K2O, 0 to 1 percent of Li2O, 0 to 5 percent of P2O5, 0 to 2 percent of B2O3, 0 to 0.5 percent of MgO, 1 to 8 percent of ZnO, 0 to 1 percent of TiO2, 0 to 0.5 percent of SrO, 0 to 0.5 percent of SnO2 and 0 to 0.5 percent of CeO2, wherein the sum of all ingredients is 100 percent; thestrain point temperature of the glass is higher than or equal to 580 DEG C; the compression stress value is greater than or equal to 900 MPa; the compression stress layer is greater than or equal to 35 mu m. The glass composition is optimized to obtain the glass with high compression stress value, high compression stress layer and weak-acid resistance.

Description

technical field [0001] The invention relates to the technical field of glass materials, in particular to a zinc phosphoaluminosilicate glass with high strain point, fast ion exchange and weak acid resistance. Background technique [0002] With the development and demand of the touch screen and display market, the rapid development and demand of touch screen and display cover glass have been driven. With people's pursuit of the appearance and performance of mobile terminal devices such as smart phones, the cover glass is gradually transitioning from the traditional 2D shape to 2.5D and 3D shapes. This also puts forward more stringent requirements on the performance of the cover glass used to protect the screen. However, the strength of ordinary silicate glass still cannot meet the needs of daily use, such as repeated drops of mobile phones and collisions with sharp objects, etc., will cause damage to the screen. The cover glass is required to have high fracture resistance, ...

AI Technical Summary

Problems solved by technology

In order to remove the dirt on the glass surface, the glass is generally cleaned with a weak acid cleaning agent, such as an oxalic acid solution with a pH of 2. Therefore, the glass surface is required to have a certain weak acid resistance, so as to avoid visible scratches on the glass surface from being damaged by the weak acid. damage, thereby reducing the transmittance of the glass and affecting the yield

Especially when a certain amount of P is introduced into the glass 2 o 5 After the composition, the chemical stability of the glass is reduced, thereby reducing the weak acid resistance of the glass; there is no report that can solve the above problems.

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