硅酸盐学报

铝硅酸盐盖板玻璃多层网络结构与性能关系

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胡文涛 ¹^,² , 石丽芬 ¹^,² , 周刚 ¹^,² , 李深厚 ¹^,² , 杨勇 ¹^,² , 高子鹏 ¹^,² , 滕飞 ¹^,² , 孙晨蕊 ¹^,² , 陈淑勇 ¹^,³ , 曹欣 ¹^,²

硅酸盐学报 | 先进玻璃材料技术与产业发展专题—研究论文 2025,53(10): 2854-2860

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硅酸盐学报 |先进玻璃材料技术与产业发展专题—研究论文 2025 , 53 (10) : 2854 -2860

铝硅酸盐盖板玻璃多层网络结构与性能关系

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胡文涛¹^,², 石丽芬¹^,², 周刚¹^,², 李深厚¹^,², 杨勇¹^,², 高子鹏¹^,², 滕飞¹^,², 孙晨蕊¹^,², 陈淑勇¹^,³, 曹欣¹^,²

作者信息

^1．先进玻璃材料全国重点实验室，中建材玻璃新材料研究院集团有限公司，安徽蚌埠 233000

^2．硅基材料安徽省实验室，安徽蚌埠 233000

^3．玻璃新材料创新中心（安徽）有限公司，安徽蚌埠 233000

通讯作者:

石丽芬（1982—），女，硕士，教授级高级工程师。

作者简介:

胡文涛（1992—），男，硕士，工程师。

Relationship Between Multi-Layer Network Structure and Properties of Aluminosilicate Cover Plate Glass

Wentao HU¹^,², Lifen SHI¹^,², Gang ZHOU¹^,², Shenhou LI¹^,², Yong YANG¹^,², Zipeng GAO¹^,², Fei TENG¹^,², Chenrui SUN¹^,², Shuyong CHEN¹^,³, Xin CAO¹^,²

Affiliations

^1.State Key Laboratory of Advanced Glass Materials, CNBM Research Institute for Advanced Glass Materials Group Co., Ltd, Bengbu 233000, Anhui, China

^2.Silica-Based Materials Laboratory of Anhui Province, Bengbu 233000, Anhui, China

^3.Innovation Center for Advanced Glass Materials (Anhui) Co., Ltd., Bengbu 233000, Anhui, China

Corresponding Author:

SHI Lifen (1982-), female, Master, Professor. E-mail: slf@ctiec.net

HU Wentao (1992-), male, Master, Engineer. E-mail: prohwt@163.com

出版时间: 2025-10-20 doi: 10.14062/j.issn.0454-5648.20250342

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摘要

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铝硅酸盐玻璃由于具有优良的机械性能和化学稳定性，在信息显示领域，如手机盖板、液晶显示器面板等得到了广泛的应用。本工作研究了铝硅酸盐玻璃成分对其微观结构和性能的影响规律，通过实验和分子动力学模拟阐明了组分-微观结构-性能之间的关系。随着Al₂O₃含量的增加，网络结构中［AlO₄］的含量逐渐升高，提高网络的完整性，起到了增强网络连通性的作用，使得玻璃网络结构更加完整、致密。因此，玻璃的密度、弹性模量、维氏硬度、玻璃化转变点、软化点和玻璃熔体的黏度均升高，平均热膨胀系数下降。该工作为铝硅酸盐盖板玻璃的工业化生产提供了必要的理论依据和实验数据。

关键词

铝硅酸盐玻璃 / 微观网络结构 / 机械性能 / 黏度

Abstract

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Introduction

With the rapid iteration of smart displays, especially smartphones, cover plate glass as one of the key materials has made recent progress, becoming an important component in the field of electronic information display applications. Aluminosilicate glass with its unique properties (i.e., good impact resistance, scratch resistance, and high hardness, as well as excellent chemical and thermal stability) is an ideal candidate material for plate cover glass. There is relatively in-depth research on the influence of composition changes in aluminosilicate glass on its structure and properties, but most of the existing research focuses on the short-range structure (<5 Å) of the aluminosilicate glass network structure, while there is less research on its medium-range structure (5-20 Å). In this work, the influence of multi-layer network structure of aluminosilicate glass on its properties was investigated by molecular dynamics simulation and experiments.

Methods

The relationship between the composition-structure-properties of glass was investigated by experimental methods and molecular dynamics simulations. The glass samples were prepared by a conventional high-temperature melting method. The raw materials were weighed and mixed uniformly according to the molar ratio of oxides, put into a platinum-rhodium crucible (90% Pt and 10% Rh), and then heated in a high-temperature lifting furnace at 1640 ℃ for 2 h. After melting, the crucible containing the molten glass was removed and poured onto a preheated copper mold. Once it solidified, it was transferred to an annealing furnace, followed by natural cooling to room temperature to eliminate internal stresses in the glass, resulting in uniform, transparent bulk glass. The glass was then cut and mechanically polished to obtain the samples with various sizes.

The glass samples were simulated, and the simulated structure was a cubic box composed of approximately 10000 atoms. The initial dimensions of the simulation box were calculated based on predicted density and atomic mass. The initial structure was optimized by a soft potential to ensure structural integrity and prevent atomic loss. The potential function used was the Buckingham potential, and the Ewald summation method was used to handle long-range Coulomb interactions. The cutoff radius was set to 10 Å, with an integration time step of 0.001 ps. The initial structure was randomly generated by an open-source software named ATOMSK.

Results and discussion

The statistical results of the short-range structural characteristics of silicate glass indicate that there are no significant changes in the position and intensity of the O—O peak, and the intensity of the Al—O peak near 1.7 Å gradually increases as Al₂O₃ content increases. The number of Al—O structural units in the glass network structure increases, having a clear symmetrical distribution with aluminum primarily in a four-coordinate environment. The strength of the Si—O bond decreases with the reduction of SiO₂. The number of [SiO₄] tetrahedral groups decreases, and some alkaline earth metal ions in the glass network structure transform into ions that serve to compensate for the charge of the [AlO₄] tetrahedral groups.

The statistical analysis of the medium-range structural characteristics of aluminosilicate glass indicates that as Al₂O₃ content increases, the Q value of the first sharp diffraction peak (FSDP) shifts towards higher values, the ring size distribution shows a certain sharpening degree with the decreasing proportions of small rings (i.e., 3-membered and 4-membered rings) and large rings (i.e., ≥7-membered rings), while increasing the proportions of medium-sized rings (i.e., 5-membered and 6-membered rings). The smaller rings, such as the three-membered and four-membered rings, typically possess a higher energy and are more prone to structural rearrangement or breakage, whereas the larger rings, such as the five-membered and six-membered rings, are relatively stable. This indicates a reduction in the medium-range disorder of the glass network structure, resulting in a denser network structure.

The mechanical properties of the glass (i.e., density, elastic modulus, and Vickers hardness) gradually increase with the increase of Al₂O₃ content. The mechanical characteristics of the glass are positively correlated to the density of its network structure. The increase in the content of the [AlO₄] network structure makes the network structure denser, while the combined effect of [AlO₄] and [SiO₄] gradually enhances the integrity of the glass network. This results in a decrease in the average coefficient of thermal expansion, an increase in the strain point and softening point, and an increase in high-temperature viscosity.

Conclusions

The relationship between the composition-structure-properties of aluminosilicate glass was elucidated through experiments and molecular dynamics simulations. The substitution of Al³⁺ for Si⁴⁺ induced changes in the short-range and medium-range network structures of the glass, leading to an increase in the bridging oxygen content and a sharpening of the ring size distribution. The structural factor could shift towards higher values at the position of the first sharp diffraction peak (FSDP), resulting in an increase in the order of the short-range and medium-range network structures, and making the network structure denser. Consequently, the density, elastic modulus, Vickers hardness, strain point, softening point, and viscosity of the glass melt all increased, while the average coefficient of thermal expansion decreased.

Key words

aluminosilicate glass / microscopic network structure / mechanical properties / viscosity

引用本文

胡文涛, 石丽芬, 周刚, 李深厚, 杨勇, 高子鹏, 滕飞, 孙晨蕊, 陈淑勇, 曹欣. 铝硅酸盐盖板玻璃多层网络结构与性能关系. 硅酸盐学报, 2025 , 53 (10) : 2854 -2860 . DOI: 10.14062/j.issn.0454-5648.20250342

Wentao HU, Lifen SHI, Gang ZHOU, Shenhou LI, Yong YANG, Zipeng GAO, Fei TENG, Chenrui SUN, Shuyong CHEN, Xin CAO. Relationship Between Multi-Layer Network Structure and Properties of Aluminosilicate Cover Plate Glass[J]. Journal of the Chinese Ceramic Society, 2025 , 53 (10) : 2854 -2860 . DOI: 10.14062/j.issn.0454-5648.20250342

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安徽省重点研究与开发计划(2023z04020014)

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2025年第53卷第10期

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文章信息

doi: 10.14062/j.issn.0454-5648.20250342

接收时间：2025-04-29
首发时间：2026-10-21
出版时间：2025-10-20

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出版历史

收稿日期：2025-04-29
修回日期：2025-05-23

基金

安徽省重点研究与开发计划(2023z04020014)

作者信息

^1．先进玻璃材料全国重点实验室，中建材玻璃新材料研究院集团有限公司，安徽蚌埠 233000

^2．硅基材料安徽省实验室，安徽蚌埠 233000

^3．玻璃新材料创新中心（安徽）有限公司，安徽蚌埠 233000

通讯作者:

石丽芬（1982—），女，硕士，教授级高级工程师。

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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20250342

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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