Research on Several Factors Affecting the Test of Thermal Expansion Coefficient of Glass Materials: Improving accuracy for high-performance applications

Han Yu; Zhang Meilun; Cao Zhenbo; Yang Shengyun; Wang Ke; Wang Qiao; Zhang Yang; Lv Haifeng; Zhou You; Jia Jinsheng

doi:10.1595/205651325X17314046073320

ISSN: 2056-5135

oa Research on Several Factors Affecting the Test of Thermal Expansion Coefficient of Glass Materials

Improving accuracy for high-performance applications
Authors: Han Yu^1,2, Zhang Meilun², Cao Zhenbo^1,2, Yang Shengyun², Wang Ke², Wang Qiao^1,2, Zhang Yang^1,2, Lv Haifeng², Zhou You^1,2 and Jia Jinsheng^1,2
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¹ China Building Materials Academy Co Ltd, Beijing, 100024, China ² China National Building Material Photonics Technology Co Ltd, Zaozhuang, 277000, China
Email:^*[email protected] ^¶[email protected]
Source: Johnson Matthey Technology Review, Volume 69, Issue 3, Jul 2025, p. 489 - 498
DOI: https://doi.org/10.1595/205651325X17314046073320
- Received: 07 Aug 2024
- Accepted: 11 Nov 2024

Abstract

Accurate measurement of glass transition temperature (Tg) and coefficient of thermal expansion (CTE) is of great significance in guiding the use and process performance of the materials. This manuscript measures the CTE and Tg of samples by the thermal expansion method and systematically researches the measurement factors affecting the Tg and the CTE, including the shape and size of the samples, the starting furnace temperature and the heat treatment process. The study shows that the sample shape and size, the starting furnace temperature and the heat treatment process all have an effect on the test results. At the same time, the placement of the sample and the data processing method will also make the test results deviate from the real value. Therefore, in order to accurately assess the thermal properties of the material, the size of the sample is specified to be 6 mm in diameter and 50 mm in length, while the initial temperature of the furnace during the CTE test should be lower than 35°C. In addition, test samples of the same glass grade should undergo the same heat treatment process to ensure the accuracy of the test results.

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/content/journals/10.1595/205651325X17314046073320

Research on Several Factors Affecting the Test of Thermal Expansion Coefficient of Glass Materials

Johnson Matthey Technology Review 69, 489 (2025); https://doi.org/10.1595/205651325X17314046073320

/content/journals/10.1595/205651325X17314046073320

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Article Type: Research Article

Keyword(s): coefficient of thermal expansion; factors; glass; thermal expansion method

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oa Research on Several Factors Affecting the Test of Thermal Expansion Coefficient of Glass Materials

Improving accuracy for high-performance applications

Abstract

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