Chemical strengthening method for improving falling resistance and surface hardness of glass

• Main Authors: QU SHULIANG, ZHU KAIDI, ZHANG FUJUN
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2020
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention discloses a chemical strengthening method for improving the falling resistance and surface hardness of glass, which sequentially comprises the following steps: (1) a glass plate pretreatment process: soaking with an acid solution to passivate cracks on the surface of the glass and perform preliminary ion exchange at the same time; step (2): a first step of chemical strengthening process: infiltrating the glass plate into a molten salt with a specific composition for ion exchange so as to obtain a deeper compressive stress layer; and (3) a second chemical strengthening process: soaking the glass plate in a molten salt with a specific composition to perform ion exchange so as to obtain relatively high surface layer compression stress. 本发明公开了一种提升玻璃耐摔性能及表面硬度的化学强化方法，该方法依次包括步骤(1)：玻璃板预处理工序，用酸溶液浸泡，使玻璃表面裂纹钝化同时进行初步离子交换；步骤(2)：第一步化学强化工序，使所述玻璃板浸润于特定组成的熔盐中进行离子交换，以便获得较深的压缩应力层；步骤(3)：第二部化学强化工序，使所述玻璃板浸润于特定组成的熔盐中进行离子交换，以便获得较高的表层压缩应力。