GB/T 36259-2018 in English
VALIDHigh aluminum silicate cover glass for touch panel
- Issued on:2018-06-07
- Implemented on:2019-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$136.00
《GB/T 36259-2018触摸屏盖板用高铝硅玻璃》由TC447（全国工业玻璃和特种玻璃标准化技术委员会）归口，主管部门为中国建筑材料联合会。
Introduction
In-depth interpretation of the national standard for high-aluminum silicate glass for touch screen cover
I. Background and significance of standard formulation
With the popularization of mobile electronic devices such as smart phones and tablets, touch screen technology has developed rapidly. In order to meet the market demand for high-performance touch screens and ensure product quality and safety performance, the national standard GB/T 36259-2018 "High-aluminum silicate glass for touch screen cover" came into being.
II. Comparative Analysis of Standard Frameworks
| Standard Dimensions | GB/T 36259-2018 | Comparative Analysis |
|---|---|---|
| Chemical Composition Requirements | Aluminum Oxide Content ≥12% | Higher than ordinary glass, improving hardness and impact resistance. |
| Thickness Range | 0.30mm~1.10mm | Covering mainstream touch screen requirements, taking into account both thinness and strength. |
| Mechanical performance indicators | Vickers hardness ≥630 HV | Meet the standards of high-end protective glass. |
III. Interpretation of core technical parameters
Chemical strengthening performance requirements
Stress layer depth needs to be ≥35μm (0.3mm thick) and ≥40μm (0.7mm and above) to ensure that the glass surface has sufficient impact resistance. Chemical strengthening is achieved through ion exchange process, and the specific parameters are as follows:
- Processing temperature: 430°C
- Processing time: 0.3~0.7mm≤6.5h; ≥0.7mm≤7h
- Impact resistance height after strengthening: 40cm (thin slice)/50cm (thick slice)
IV. Recommendations for standard implementation
- Quality control:Strictly monitor the alumina content during production to ensure that it meets the 12% lower limit requirement.
- Process optimization:It is recommended to use a fully automatic surface stress meter to detect the effect of chemical strengthening treatment.
- Environmental factors:It is recommended to conduct bending strength tests in a temperature and humidity controlled environment (temperature: 20±5°C, humidity: 40%-80%).
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