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GB/T 42270-2022: Test methods of hydrophobic characteristics for porous hydrophobic membrane
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GB/T 42270-2022: Test methods of hydrophobic characteristics for porous hydrophobic membrane

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ICS 71.040.99 CCSJ77 National Standards of People's Republic of China Hydrophobicity Test Method of Porous Hydrophobic Membrane Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents" drafting. Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Standardization Technical Committee of Separation Membrane (SAC/TC382). This document is drafted by. Tianjin University of Technology, Zhejiang Jinmembrane Environmental Technology Co., Ltd., Shanghai Kaixin Separation Technology Co., Ltd., China Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Eco-Environmental Research Center, Chinese Academy of Sciences, Quality and Technical Supervision Standards and Codes of Shunde District, Foshan City Institute, Tianjin Motianmembrane Technology Co., Ltd., Zhejiang University, Guangzhou Institute of Advanced Technology, Beijing Origin Water Separation Membrane Technology Co., Ltd., Beijing Zhongke Ruisheng Resources and Environment Technology Co., Ltd., Lide Membrane (Beijing) New Material Technology Co., Ltd., Jiehai Ruiquan Membrane Technology (Tianjin) Co., Ltd. Company, Sinopec (Beijing) Chemical Research Institute Co., Ltd., Shanghai Jiaotong University, Shandong Zhaojin Motian Co., Ltd., Anhui Zhongke Shenyang Membrane Technology Co., Ltd., Sinochem (Ningbo) Runwo Membrane Technology Co., Ltd., Tianjushi Engineering Technology Group Co., Ltd., Hunan Aowei Technology Co., Ltd. Co., Ltd., Weihai Qingerte Environmental Technology Co., Ltd., Ningxia University, Hangzhou Kebaite Filter Equipment Co., Ltd., Beijing University of Technology, Zhejiang Huiyong New Material Co., Ltd., Shandong Heweijing Technology Co., Ltd., Zhejiang Gertex Environmental Protection Special Material Technology Co., Ltd., Tianjin Motian Membrane Engineering Technology Co., Ltd., Chongqing Moore Water Treatment Equipment Co., Ltd. The main drafters of this document. Lu Xiaolong, Fan Yunshuang, Xu Yinong, Ge Wenyue, Kang Guodong, Wang Jun, Zhou Zhou, Jia Qiuying, Zhang Lin, Wang Xi, Peng Xingzheng, Gao Yonggang, Bi Fei, Zhang Yanping, Zhang Xinmiao, Shao Jiahui, Zhang Weizheng, Wang Xiaolin, Cao Chun, Chen Ping, Bloomberg, Yu Shuili, Wei Yibin, Lu Guoying, Peng Yuelian, Cao Yi, Zhao Lanyu, Jiang Xueliang, Xi Xuejie, Ma Bing, Chen Donggen, Gao Xu, Ren Longfei, An Anfu, Liu Yang, Ma Lanyun. Hydrophobicity Test Method of Porous Hydrophobic Membrane

1 Scope

This document describes the test method for water penetration pressure and critical wetting value of porous hydrophobic membranes. This document is applicable to the separation in which the membrane channel remains in the gas phase or oil phase during the membrane separation process, and the pore size ranges from 0.01 μm to 10.0 μm. Testing of membrane hydrophobic properties.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 6682 Analytical laboratory water specifications and test methods GB/T 32373-2015 Test method for reverse osmosis membrane GB/T 38902-2020 Image Analysis Method for Determination of Sectional Dimensions of Hollow Fiber Membranes YY/T 0282 injection needle

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 During the membrane separation process, the membrane channel remains in the gas phase or oil phase, and the separation membrane has a pore size ranging from 0.01 μm to 10.0 μm. 3.2 Hollow fiber and tubular porous hydrophobic membranes used in a state where the inner surface of the membrane is in contact with the raw material solution. 3.3 Hollow fiber and tubular porous hydrophobic membranes used in a state where the outer surface of the membrane is in contact with the raw material solution. 3.4 liquid pressure The minimum pressure required for water to pass through a porous hydrophobic membrane. Note. The unit is megapascal (MPa). 3.5 critical wetting value The maximum wetting depth at which a porous hydrophobic membrane can self-dehydrate. Note. The unit is micron (μm). ...