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A high-strength safety protection glass with low surface tension and its preparation method

A technology with low surface tension and safety protection, which is applied in the field of high-alumina special touch screen glass, and can solve the problems of unsuccessful production and late start of research on high-alumina glass for touch screens.

Active Publication Date: 2016-03-30
CHONGQING XINJING SPECIAL GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] my country's research on high-alumina glass for touch screens started late, and there is no precedent for successful production

Method used

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  • A high-strength safety protection glass with low surface tension and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: According to No. 1 glass component in Table 2, the high-strength safety protective glass obtained, 10 2 The temperature of dPa·s viscosity is 1589°C, 10 4 The temperature of dPa·s viscosity is 1116°C, 10 11 The temperature of dPa·s viscosity is 603°C, 10 14.5 The temperature of dPa·s viscosity is 509°C; the surface tension is 0.339N / M at 900°C, 0.319N / M at 1200°C, 0.317N / M at 1300°C, and 0.311N / M at 1400°C. The water resistance grade of the original film is less than grade 3 (Na2O precipitation is 35.56μg / g glass), the Vickers hardness is 590, and the compressive strength at 1.0mm is 336MPa. The surface hardness is 641 and the compressive strength is 805MPa after chemical strengthening at 425°C for 8 hours.

Embodiment 2

[0041] Embodiment 2: According to No. 2 glass components in Table 2, the high-strength protective glass obtained, 10 2 The temperature of dPa·s viscosity is 1578°C, 10 4 The temperature of dPa·s viscosity is 1119°C, 10 11 The temperature of dPa·s viscosity is 607℃, 10 14.5 The temperature of dPa·s viscosity is 512°C; the surface tension is 0.340N / M at 900°C, 0.320N / M at 1200°C, 0.318N / M at 1300°C, and 0.312N / M at 1400°C. The water resistance grade of the original sheet is less than grade 3 (Na2O precipitation 41.62μg / g glass), the Vickers hardness of the original sheet is 595, the compressive strength of 1.0mm is 342MPa, the surface hardness after chemical strengthening is 646, and the compressive strength is 810MPa.

Embodiment 3

[0042] Embodiment 3: According to No. 3 glass components in Table 2, the high-strength protective glass obtained, 10 2 The temperature of dPa·s viscosity is 1582°C, 10 4 The temperature of dPa·s viscosity is 1119°C, 10 11 The temperature of dPa·s viscosity is 608℃, 10 14.5 The temperature of dPa·s viscosity is 513°C; the surface tension is 0.339N / M at 900°C, 0.318N / M at 1200°C, 0.317N / M at 1300°C, and 0.311N / M at 1400°C. The water resistance grade of the original film is less than grade 3 (Na2O precipitation is 43.58μg / g glass), the Vickers hardness is 587, and the 1.0mm compressive strength is 332MPa. After chemical strengthening, the surface hardness is 631, and the compressive strength is 796MPa.

[0043] The water resistance level of ordinary float glass is 4 (Na2O precipitation is about 280μg / g glass), the surface Vickers hardness is 533, and the compressive strength of 1.0mm is 243MPa. After chemical strengthening, the surface hardness is 582, and the compressive str...

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Abstract

The invention relates to a low-surface-tension high-strength safety protection glass, which has the advantages of low high-temperature viscosity, high tendency to melting and low surface tension and is easy to form and suitable to be produced by a float process. The glass is mainly used as the high-strength safety protection glass for touch screens of mobile phones, televisions, tablet computers, industrial control equipment and the like. The glass is characterized by comprising the following components in percentage by mass: 59-62% of SiO2, 12-14% of Al2O3, 11-13% of Na2O, 0.25% of CeO2, 0.5% of SnO2, 5-6% of MgO, 4-5% of K2O, 0.6-0.8% of MoO3, 1.1-1.5% of Bi2O3, 1.2-1.3% of GeO2 and 0.25-0.75% of other impurities (Fe2O3+TiO2+CaO); and the total content of the MoO3, Bi2O3 and GeO2 is 3.0-3.5%.

Description

technical field [0001] The invention relates to high-alumina special touch screen glass, in particular to a high-strength safety protective glass with low surface tension, which is easy to melt due to its low viscosity at high temperature and easy to form due to its low surface tension, and is suitable for float process production. It is mainly used as high-strength safety protection glass for touch screens of mobile phones, TVs, tablet computers, and industrial control equipment. It can also be used for windshield safety glass of luxury cruise ships, high-speed railway locomotives, airplanes and other high-speed vehicles. technical background [0002] With the rapid development of the national economy, my country's industrial control equipment, mobile phones, flat-panel TVs and other touch-screen electronic devices are widely used, which can effectively prevent impact and scratch damage on the surface of the display product screen and prolong the service life of the product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/095
Inventor 鲁鹏赵会峰姜宏有学军童云赖新宇刘晓娟
Owner CHONGQING XINJING SPECIAL GLASS CO LTD