3D-shaped colorable ion exchange glass and preparation method thereof

Abstract

The invention discloses 3D-shaped colorable ion exchange glass and a preparation method thereof. The glass comprises 55-75% of SiO2, 7-23% of Al2O3, 0-5% of B2O3, 3-25% of Na2O, 0-6% of K2O, 0-5% of P2O5, 0-6% of ZnO, 0-3% of MgO, 0.1-3% of CaO and 0-4% of SnO2. The preparation method comprises the following steps: step 1, subjecting the above raw materials to melting and molding to form flat glass; step 2, performing high-temperature annealing treatment; step 3, carrying out ion exchange in the molten salt of a coloring agent at 380-450 DEG C for 1-6 h, wherein the molten salt of the coloring agent molten salt is composed of 30%-50% of copper nitrate, 20%-35% of potassium nitrate and 20%-35% of sodium nitrate; and step 4, carrying out cooling to 80 DEG C from 400 DEG C within 1 h to obtain the glass. The glass has a low softening point and can meet the artistic demand on product shapes through reprocessing.

Description

technical field [0001] The invention relates to the technical field of 3D glass manufacturing, in particular to a 3D shaped and colorable ion exchange glass and a preparation method thereof. Background technique [0002] With the development of modern display technology, a large number of flat panel display products such as liquid crystal display, cash machine protection screen, touch screen information inquiry machine and media advertising player have emerged and entered our daily life. With the improvement of people's material and cultural living standards, Shape, color and suitability of these display products are increasingly sought after. [0003] The softening point of conventional ion-exchangeable glass used as cover glass in consumer electronic devices is usually greater than or equal to 840 ° C. Glasses with softening points in this range are easily suitable for molding, but this glass is not suitable for elevated temperatures. Molded into 3D shapes. Specifically,...

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Problems solved by technology

[0003] The softening point of conventional ion-exchangeable glass used as cover glass in consumer electronic devices is usually greater than or equal to 840 ° C. Glasses with softening points in this range are easily suitable for molding, but this glass is not suitable for elevated temperatures. Formed into 3D shapes

Specifically, the higher softening point of glass causes the material of the glass and the mold to react, causing the glass to adhere to the mold or degrade the mold, thereby damaging the glass and degrading the mold; meanwhile, expensive colorants are often required to form tintable glass Therefore, there is an urgent need to develop a kind of 3D molding colorable and cheap and safe glass material that can be processed to meet people's appreciation needs for product shapes, low softening point

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