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GB/T 39548-2020: Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions
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Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions
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GB/T 39548-2020
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Basic data | Standard ID | GB/T 39548-2020 (GB/T39548-2020) | | Description (Translated English) | Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q25 | | Classification of International Standard | 91.100.60 | | Word Count Estimation | 5,571 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-11-01 | | Quoted Standard | GB/T 4132; GB/T 10294; GB/T 10295; GB/T 37608 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the method for measuring the retention of thermal resistance of vacuum insulation panels under specified temperature and humidity conditions. This standard applies to the evaluation of long-term durability of vacuum insulation panels, and other materials can also be referred to. | GB/T 39548-2020: Determination of retention rate on thermal resistance of vacuum insulation panels (VIP) in hygrothermal conditions
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(Determination of the retention rate of thermal resistance of vacuum insulation panels under damp and hot conditions)
ICS 91:100:60
Q25
National Standards of People's Republic of China
Determination of the retention rate of thermal resistance of vacuum insulation panels under damp and hot conditions
2020-12-14 release
2021-11-01 implementation
State Administration for Market Regulation
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 Thermal Insulation Material Standardization Technical Committee (SAC/TC191):
Drafting organizations of this standard: Nanjing Fiberglass Research and Design Institute Co:, Ltd:, Anhui Kensihui New Material Co:, Ltd:, Guangzhou
Huineng Environmental Protection Material Co:, Ltd:, Fujian Saite New Material Co:, Ltd:, CRRC Changjiang Vehicle Co:, Ltd:, Changhong Meiling Co:, Ltd:,
Jiangsu Shanyou Diao New Material Co:, Ltd:, Chuzhou Yinxing New Material Technology Co:, Ltd:, Qingdao Dexu New Material Co:, Ltd:, China
Petrochemical International Business Co:, Ltd:, National Fiberglass Product Quality Supervision and Inspection Center:
The main drafters of this standard: Hou Peng, Zhang Jianhong, Diao Zijun, Zeng Tianhua, Yuan Jiangtao, Wang Haicheng, Liu Qiang, Chen Jingming, He Yuanxin, Xu Weiguo,
Wei Bangfu, Jiang Feng, Hu Xiaodong, Zhang Liangliang, Li Shunzhong, Wu Sheng, Sun Meifeng, Bao Yuzhen, Hu Pengjun, Zhao Ming, Ding Qing, Pan Yang, Qu Huili, Yan Huifeng,
Cui Jun, Tang Jian, Wei Shanzhi, Zhang Shuaikai:
Determination of the retention rate of thermal resistance of vacuum insulation panels under damp and hot conditions
1 Scope
This standard specifies the method for measuring the retention of thermal resistance of vacuum insulation panels under specified temperature and humidity conditions:
This standard applies to the evaluation of long-term durability of vacuum insulation panels, and other materials can also be referred to:
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 references, the latest version (including all amendments) applies to this document:
GB/T 4132 Thermal insulation materials and related terms
GB/T 10294 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials: Protective hot plate method
GB/T 10295 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials by calorimeter method
GB/T 37608 vacuum insulation board
3 Terms and definitions
The following terms and definitions defined in GB/T 4132 and GB/T 37608 apply to this document:
3:1
Thermal resistance retention rate retentionrateonthermalresistance
Under the specified temperature and humidity conditions, the sample is processed for a certain period of time, and the ratio of the thermal resistance of the central area after processing to that before processing:
4 Equipment
4:1 Temperature and humidity control box: temperature fluctuation is not more than ±2℃; relative humidity fluctuation is not more than ±3%:
4:2 Thermal conductivity tester: meet the requirements of GB/T 10294 or GB/T 10295:
4:3 Environmental chamber: The temperature fluctuation is not more than ±2℃:
5 Sample
5:1 Sample requirements
The sample should be a complete vacuum insulation panel: The sample size is the original size of the sample:
5:2 State adjustment
The sample should be placed for no less than 72h under the conditions of temperature (23±2)℃ and relative humidity (50±5)%:
6 Test procedure
6:1 Thermal resistance test in the central area before treatment
Use a thermal conductivity tester to test the thermal resistance of the central area of the sample before processing, take three significant figures, and record the thickness of the sample: If the sample
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