Glass for chemical reinforcement as well as preparation method and application thereof
A technology for strengthening glass and chemistry, applied in the field of chemical strengthening glass and its preparation, can solve the problems of glass melting and forming, and achieve the effects of reducing production cost, reducing energy consumption, and excellent chemical strengthening effect.
Inactive Publication Date: 2019-11-15
河北视窗玻璃有限公司 +1
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Problems solved by technology
The glass for chemical strengthening of the present invention can obtain a higher CS value under the premise of a lower alumina content (molar percentage ≤ 10%), thereby solving the problems of glass melting, clarification, molding and high cost
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preparation example Construction
[0036] (1) Preparation of glass for chemical strengthening: mix the ingredients according to the formula amount of oxide mole percentage in the glass for chemical strengthening, melt and clarify in an electric furnace at a temperature of 1650°C for 6 hours, pour the molten glass on the steel plate to prepare a glass block , performing annealing in an annealing furnace at a cooling rate of 1° C. / min from the annealing point to the strain point to obtain the glass for chemical strengthening;
[0037] (2) Preparation of chemically strengthened glass: the glass for chemically strengthened in step (1) was cut, ground, and polished to 0.7mm, and then ion-exchanged in potassium nitrate molten salt to obtain chemically strengthened glass.
[0038] The strengthening performance test equipment of the glass for chemical strengthening obtained in each embodiment of the present invention is Orihara automatic surface stress meter FM-6000LE:
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Abstract
The invention discloses glass for chemical reinforcement as well as a preparation method and application thereof. Based on mole percentage of oxide, the glass for chemical reinforcement comprises 50 to 74 percent of SiO2, 0.5 to 10 percent of Al2O3, 3 to 12 percent of ZnO and 8 to 20 percent of R2O, wherein the R2O comprises Na2O or a mixed material of Na2O and K2O; and the mole ratio of (ZnO+Al2O3) / SiO2 is 0.10 to 0.3, the mole ratio of ZnO / Al2O3 is 0.1 to 15 and the mole ratio of K2O / R2O is 0 to 0.5. Through selection of glass components and content and selection of proportional relation ofspecific components, the CS value and the DoL depth of ordinary alkali aluminosilicate glass with high aluminum oxide content can be obtained under the same chemical reinforcement condition and low aluminum oxide content, and the problems of high melting temperature, high forming temperature and high production cost of the glass are solved.
Description
technical field [0001] The invention belongs to the technical field of glass, and relates to a glass for chemical strengthening, a preparation method and application thereof. Background technique [0002] Portable mobile devices such as smartphones and tablet computers have become a necessity in people's lives, and they require cover glass with high strength, scratch resistance, and strong impact resistance. Only chemically strengthened cover glass can meet the needs of end customers. [0003] Chemical strengthening is divided into high-temperature type and low-temperature type. The low-temperature type refers to the enhancement of the glass surface through ion exchange between alkali metal ions in the glass and alkali metal ions in molten salt below the strain point temperature. For chemically strengthened glass, surface compressive stress (CS), depth of stress layer (DoL) and bulk tensile stress (CT) are usually used as evaluation indicators. [0004] Domestic cover glas...
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IPC IPC(8): C03C3/085C03B18/02C03C21/00
CPCC03B18/02C03C3/085C03C21/002
Inventor 蔡礼貌韩正伟李彦涛巩瑞龙孙雪峰李聚锋
Owner 河北视窗玻璃有限公司