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GB/T 39797-2021: Test method for surface tension of glass melt - Sessile drop method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39797-2021 | English | 189 |
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Test method for surface tension of glass melt - Sessile drop method
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GB/T 39797-2021
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Basic data | Standard ID | GB/T 39797-2021 (GB/T39797-2021) | | Description (Translated English) | Test method for surface tension of glass melt - Sessile drop method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q34 | | Word Count Estimation | 10,141 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39797-2021: Test method for surface tension of glass melt - Sessile drop method---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for surface tension of glass melt - Sessile drop method
ICS 81.040.01
Q34
National Standards of People's Republic of China
Test method for surface tension of molten glass
Released on 2021-03-09
2021-10-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Building Materials Federation.
This standard is under the jurisdiction of the National Industrial Glass and Special Glass Standardization Technical Committee (SAC/TC447).
Drafting organizations of this standard. Beijing University of Technology, Xiamen Metrological Verification and Testing Institute, Huzhou Tianshi Glass Products Co., Ltd., Rainbow Display
Parts Co., Ltd., Bengbu Product Quality Supervision and Inspection Institute, Huzhou Jinnuogna Weibao Fireproof Door and Window Co., Ltd., Hebei CSG Glass
Co., Ltd., China Building Materials Inspection and Certification Group Co., Ltd., Henan Yuke Optical Technology Co., Ltd., Dongguan Yintaifeng Optics
Technology Co., Ltd., Jiangxi Voge Optoelectronics Co., Ltd., Guizhou Building Material Product Quality Inspection and Testing Institute, Shandong Lehejia Commodity Co., Ltd.
Company, Suzhou Xinwu Optoelectronics Technology Co., Ltd., Henan Ancai Hi-Tech Co., Ltd., Dezhou Andun Electronics Co., Ltd., Beijing Xuhui Xinrui
Technology Co., Ltd.
The main drafters of this standard. Li Miao, Jiang Shulian, Tian Yingliang, Song Weirong, Zhang Kun, Zhao Xingyong, Wu Linyu, Wang Wei, Wang Changjun, Li Junjie,
Jing Zhijie, Zhang Xun, Tang Zhangang, Yang Huiliang, Xu Zhengben, Kang Pinchun, Wang Jianjun, Li Na, Lu Ting, Li Hongliang, Zhao Zhiyong, Zhang Yusheng, Peng Shiyong,
Cang Limin, Liu Haiyan, Lun Xiaoyu, Liu Yaru, Huang Bowen.
Test method for surface tension of molten glass
1 Scope
This standard specifies the measurement principles, instruments and equipment, samples, tests, calculation and presentation of results, and tests for measuring the surface tension of glass melts.
report.
This standard applies to the sessile drop method to measure the surface tension of glass melts.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 1598 platinum rhodium 10-platinum thermocouple wire, platinum rhodium 13-platinum thermocouple wire, platinum rhodium 30-platinum rhodium 6 thermocouple wire
GB/T 11446.1 electronic grade water
GB/T 21389 Vernier, belt meter and digital caliper
GB/T 26497 electronic balance
GB/T 30071 Fine-grained high-density special graphite products
GB/T 32201 gas flow meter
YY/T 0686 Medical tweezers
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Glassmelt
Glass that exhibits liquid characteristics above its softening point temperature.
3.2
Surfacetension
The force per unit length at the tangent of the melt (liquid) and gas interface.
3.3
Sessiledropmethod
A method for measuring surface tension based on the shape parameters of the melt (liquid) forming stable ellipsoidal droplets on the surface of the horizontal pallet.
3.4
Calibrationcolumn
Smooth cylinder for image pixel size calibration.
4 Measuring principle
The surface tension of the glass melt is measured based on the sessile drop method. The glass melt is rotated by the combined action of gravity and surface tension on the horizontal pallet.
Axisymmetric ellipsoid (see Figure 1), the relationship between the pressure difference at any point on the surface of the ellipsoid and the surface tension is shown in equation (1).
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