Composition for glass, alumina borosilicate glass, preparation method of alumina borosilicate glass and applications of composition for glass and alumina borosilicate glass

A technology of aluminoborosilicate and composition, which is applied in semiconductor/solid-state device manufacturing, electrical components, circuits, etc., to achieve the effects of good tempering effect, high thermal expansion coefficient, and high strain point

Active Publication Date: 2016-08-03
DONGXU OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of flexible packaging cover materials, the chemically toughened low-brittle ultra-thin flexible cover glass is far superior to polymer materials in terms of strength and air tightness, but there are also unavoidable brittleness problems of glass materials, and broken damage when dropped still need to avoid

Method used

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  • Composition for glass, alumina borosilicate glass, preparation method of alumina borosilicate glass and applications of composition for glass and alumina borosilicate glass
  • Composition for glass, alumina borosilicate glass, preparation method of alumina borosilicate glass and applications of composition for glass and alumina borosilicate glass
  • Composition for glass, alumina borosilicate glass, preparation method of alumina borosilicate glass and applications of composition for glass and alumina borosilicate glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0077] Weigh each component according to the glass composition shown in Table 1, mix well, pour the mixture into a platinum crucible, then heat in a resistance furnace at 1430°C for 4 hours, and stir with a platinum rod to remove air bubbles. Pour the molten glass into a stainless steel cast iron mold to form a specified block glass product, then anneal the glass product in an annealing furnace for 2 hours, turn off the power and cool down to 25°C with the furnace. Cut, grind and polish the glass products, clean the surface of the polished 80*80*1mm glass products with deionized water and put them into molten KNO at 440°C 3 Treat for 3 hours in middle temperature, then take it out and cool it down to 25°C, wash it with deionized water and dry it to obtain a finished glass product. Various properties of each glass product were measured respectively, and the results are shown in Table 1.

[0078] Table 1

[0079]

[0080]

Embodiment 9-12、 comparative example 1-3

[0082] According to the method of Example 1, the difference is that the composition of the mixture (corresponding to the glass composition) and the performance measurement results of the obtained product are shown in Table 2.

[0083] Table 2

[0084]

[0085]

[0086] By comparing the data of embodiment 9 and embodiment 12 in table 2, it can be seen that in weight percentage, 02 o 3 / (Al 2 o 3 + Ga 2 o 3 )<0.6, the thermal stability, chemical strengthening properties, impact resistance and toughness of the glass can be further improved.

[0087] By comparing the data in Table 1-2, it can be seen that the method of the present invention utilizes SiO containing specific content 2 , B 2 o 3 、Al 2 o 3 、Na 2 O, K 2 O, MgO, CaO, ZnO and RE 2 o 3 The glass prepared from the composition for glass has an elastic modulus higher than 80GPa and a density lower than 2.5g / cm 3 , the coefficient of thermal expansion in the range of 50-350°C is less than 90×10 -7 / °C, th...

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Abstract

The invention relates to the field of glass, and discloses a composition for glass, alumina borosilicate glass, a preparation method of the alumina borosilicate glass and applications of the composition for glass and the alumina borosilicate glass. The composition comprises the following components by weight on an oxide basis: 40-60wt% of SiO2, 10-40wt% of B2O3, 3-17wt% of Al2O3+Ga2O3, 11-18wt% of Na2O, 0-5wt% of K2O, 0-8wt% of MgO, 0.1-13wt% of CaO, 0-4wt% of ZnO and 0.1-4wt% of RE2O3. The prepared glass is high in chemical strengthening effect, has a relatively high strain point, a relatively high elasticity modulus, a relatively low melting temperature and favorable impact strength and tenacity, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of glass, in particular to a composition for glass, aluminoborosilicate glass and a preparation method and application thereof. Background technique [0002] In the field of flat panel display, the touch screen product market has developed rapidly in recent years. The current mainstream product is a capacitive touch screen, and its main component is a glass substrate that protects the surface. With the development of display technology and touch technology, the market's 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, so 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 the glass Yes, so improving the strength of the glass itself is the key. In addition to being...

Claims

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Application Information

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IPC IPC(8): C03C3/095C03C21/00H01L27/32H01L51/52
CPCC03C3/095C03C21/00H10K59/00H10K50/80H10K50/84
Inventor 张广涛胡恒广王丽红闫冬成李俊锋安利营
Owner DONGXU OPTOELECTRONICS TECH CO LTD
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