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Composition for glass, chemically strengthened glass with low brittleness, and preparation method and application of chemically strengthened glass with low brittleness

A technology for strengthening glass and composition, which is applied in the fields of low brittle chemically strengthened glass and its preparation, and glass composition. Effect of melting temperature, good strength and toughness

Inactive Publication Date: 2016-06-01
WUHU DONGXU OPTOELECTRONICS EQUIP TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In quartz glass, Si-O has strong bonding force and long-range disorder, and it is difficult to produce plastic shear, so it has high hardness and high brittleness. Part of SiO is replaced by boron or alkali metal 2 , the silicon-oxygen network produces broken bonds, and plastic shear is more likely to occur, so the hardness decreases and the brittleness decreases; 2 o 3 Replace SiO 2 After that, the opening degree of the glass structure was reduced, and it has a rigid structure, which can resist deformation, resulting in a decrease in fracture toughness and an increase in brittleness. At present, the high-alumina and high-alkali silicate cover glass has the characteristics of high strength and high brittleness.

Method used

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  • Composition for glass, chemically strengthened glass with low brittleness, and preparation method and application of chemically strengthened glass with low brittleness
  • Composition for glass, chemically strengthened glass with low brittleness, and preparation method and application of chemically strengthened glass with low brittleness
  • Composition for glass, chemically strengthened glass with low brittleness, and preparation method and application of chemically strengthened glass with low brittleness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9

[0056] Weigh the components as shown in Table 1, mix them well, pour the mixture into a platinum crucible, and then heat it in a resistance furnace at 1430°C for 4 hours, and stir with a platinum rod to expel bubbles. Pour the molten glass into a stainless steel cast iron grinding tool and shape it into a specified block glass product. Then, the glass product is annealed in an annealing furnace for 2 hours. The power is turned off and the furnace is cooled to 25°C. Cut, grind, and polish the glass product, and clean the surface of the polished 50*50*1mm glass product with deionized water and put it into 420℃ molten KNO 3 It is treated for 3 hours, then taken out and cooled to 25°C, cleaned with deionized water and dried to obtain a glass product. The various properties of each glass product were measured, and the results are shown in Table 1.

[0057] Table 1

[0058]

[0059]

Embodiment 10-17

[0061] According to the method of Example 1, the difference is that the composition of the mixture and the performance measurement results of the obtained product are shown in Table 2.

[0062] Table 2

[0063]

[0064]

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PUM

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Abstract

The invention relates to the glass field, and discloses a composition for glass, chemically strengthened glass with low brittleness, a preparation method of the chemically strengthened glass with low brittleness and application of the chemically strengthened glass with low brittleness. The composition is prepared from the following components in percent by weight: 40 weight percent to 60 weight percent of SiO2, 15 weight percent to 35 weight percent of B2O3, 1 weight percent to 7 weight percent of Al2O3, 10 weight percent to 17 weight percent of Na2O, 0 to 4 weight percent of K2O, 8 weight percent to 15 weight percent of MgO, 0 to 6 weight percent of CaO, 0.01 weight percent to 3 weight percent of SrO, 0.01 weight percent to 3 weight percent of BaO and 1 weight percent to 8 weight percent of ZnO. The glass prepared according to the preparation method disclosed by the invention has the advantages of good toughening effect, higher strain point, higher modulus of elasticity, lower melting temperature, higher coefficient of thermal expansion, lower brittleness, excellent strength, excellent toughness, suitability for large-scale industrial production, compatibility for PDP (Plasma Display Panel) substrate production and capability of solving the PDP glass waste recycling problem.

Description

Technical field [0001] The invention relates to the field of glass, and in particular to a composition for glass, low-brittle chemically strengthened glass, and a preparation method and application thereof. Background technique [0002] In the field of flat display, the touch screen product market has developed rapidly in recent years. The current mainstream product is a capacitive touch screen, the main component of which is a glass substrate with a protective surface. With the development of display technology and touch technology, market requirements for glass substrates are increasing. As touch screens are more and more widely used, almost all devices of large, medium and small sizes have touch screens. Therefore, the most important performance of touch screens is to have excellent mechanical properties, scratch resistance and scratch resistance, and this performance is reflected by the strength of glass Yes, so improving the strength of the glass itself is the key. In addi...

Claims

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Application Information

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IPC IPC(8): C03C3/093C03C21/00C03C4/00
CPCC03C3/093C03C4/00C03C21/002
Inventor 张广涛安利营闫冬成王丽红胡恒广徐兴军
Owner WUHU DONGXU OPTOELECTRONICS EQUIP TECH
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