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Composition for glass, aluminosilicate glass, preparation method and application thereof

A technology of aluminosilicate glass and composition, which is applied in the field of glass to achieve high chemical strengthening performance, large Young's modulus, good strength and toughness

Inactive Publication Date: 2017-05-31
TUNGHSU TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned systems have major defects

Method used

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  • Composition for glass, aluminosilicate glass, preparation method and application thereof
  • Composition for glass, aluminosilicate glass, preparation method and application thereof
  • Composition for glass, aluminosilicate glass, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0083] The components were weighed according to the glass composition shown in Table 1, mixed well, and the mixture was poured into a platinum crucible, then heated in a resistance furnace at 1550°C for 7 hours and stirred with a platinum rod to expel air bubbles. The molten glass is poured into a stainless steel cast iron grinding tool to form a specified block glass product, and then the glass product is annealed in an annealing furnace for 2 hours, and the power is turned off and the furnace is cooled to 25 ℃. Cut, grind and polish the glass products, wash the surface of the 80*80*0.08mm glass products obtained by polishing with deionized water and put them into molten KNO at 430°C. 3 After treatment for 3 hours, the glass was taken out and cooled to 25°C, washed with deionized water and dried to obtain a glass finished product. Various properties of each glass finished product were measured, and the results are shown in Table 1.

[0084] Table 1

[0085]

[0086]

Embodiment 9-16

[0088] 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.

[0089] Table 2

[0090]

[0091]

Embodiment 17-22、 comparative example 1-3

[0093] 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 3.

[0094] table 3

[0095]

[0096]

[0097] Comparing the data in Tables 1-3, it can be seen that the method of the present invention utilizes SiO containing a specific content 2 , Al 2 O 3 , B 2 O 3 , MgO, Na 2 O and TiO 2 The flexible glass prepared from the composition for glass has an elastic modulus higher than 80GPa and a density lower than 2.5g / cm 3 , the thermal expansion coefficient in the range of 50-350℃ is less than 95×10 -7 / °C, the strain point temperature is higher than 610°C; among them, after chemical strengthening treatment, the fracture toughness K of the glass IC More than 650MPa m 1 / 2 , the compressive stress formed on the glass surface is 810-880MPa, the depth of the compressive stress layer is above 40μm, the tensile ...

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PUM

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Abstract

The invention relates to the field of glass, and discloses a composition for glass, aluminosilicate glass, and a preparation method and application thereof. Based on the weight of the composition, measured by oxides, the composition contains 55-68wt% of SiO2, 10-25wt% of Al2O3, 1-8wt% of B2O3, 0.01-5wt% of MgO, 10-19wt% of Na2O and 0.12-2wt% of TiO2. The flexible aluminosilicate glass disclosed by the invention has low brittleness and high fracture toughness and strength.

Description

technical field [0001] The invention relates to the field of glass, in particular to a composition for glass, aluminosilicate glass and a preparation method and application thereof. Background technique [0002] The substrates and protective covers of OLEDs and LCDs used in curved displays need to be non-planar, which increases the difficulty in manufacturing. Polymer materials have good plasticity and are easy to make curved and flexible displays, but their hardness, scratch resistance, pressure resistance, weathering resistance, light transmission, thermal stability, and chemical stability are not as good as glass, so glass is still a An important material for curved and flexible displays; however, glass has disadvantages such as excessive brittleness and difficulty in bending, which is not conducive to the use of curved and flexible display devices. [0003] In the field of flat panel display, the touch screen product market has developed rapidly in recent years. The cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/091C03C21/00
CPCC03C3/091C03C21/002
Inventor 沈玉国王丽红郑权闫冬成李俊锋张广涛
Owner TUNGHSU TECH GRP CO LTD
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