GB/T 42270-2022 in English

VALID

Test methods of hydrophobic characteristics for porous hydrophobic membrane

Issued on:2022-12-30
Implemented on:2023-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $190.00
$185.00

Standard No:	GB/T 42270-2022
Document status:	VALID
Title in English:	Test methods of hydrophobic characteristics for porous hydrophobic membrane
Title in Chinese:	多孔疏水膜的疏水性能测试方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-12-30
Implemented on:	2023-04-01
Professional Classification:	GB-National Standard
Related Keywords:	membrane test porous hydrophobic membrane porous hydrophobic membrane introduction reference test method direct contact membrane distillation test methods
Related Topics:	super hydrophobic Porous Hydrophobic Hydrophobic segment water performance hydrophobic adsorbent Hydrophobin+ Hydrophobic membrane water Hydrophobic Angle performance test english Membrane hole Eighteen how hydrophobic Sparse + Hydrophobicity and Hydrophobicity Hydrophobic membrane protein hydrophobic hydrophobic contact Hydrophobic membrane Hydrophobicity and Surface Hydrophobicity Hydrophobic membrane Hydrophobic Surface Hydrophobicity tick hydrophobicity hydrophobic oil hydrophobin sparseness bismuth hydrophobic water film performance test english Hydrophobic angle measurement Hydrophobic Angle Meter Hydrophobic Angle water film liquid hydrophobic Hydrophobic test film hydrophobicity Hydrophobicity measurement Hydrophobic angle measurement performance test english how hydrophobic Water phase membrane Hydrophobic angle measurement method Hydrophobic test Hydrophobic Angle Detection Hydrophobic angle measurement method upper hydrophobic angle how to measure water How Hydrophobicity is Measured Three ways to measure the amount of water Water test method Hydrophobic water absorption Hydrophobic t film Hydrophobic angle hydrophobic chain Hydrophobic rubber sheet How much contact angle is hydrophobic Hydrophobic Angle Detection Hydrophobic Except Hydrophobic Angle Taste this sparse liquid hydrophobic Thickness Test Film hydrophobization dredge agent Hydraulic calculation of porous orifice plate hydrophobic patch Yu Cunming hydrophobic Pyrene and microdomain hydrophobicity Hydrophobicity analysis chart Hydrophobic grade test Film-forming performance measurement method Hydrophobic membrane test Super hydrophobic coating Test methods for medical porous coatings Superhydrophobic detection Execution of Hydrophobic Waterproof Coatings Continuous water film method test Paint hydrophobic angle Testing of hydrophobic angle of coatings Validation of Hydrophobic Chromatography Methodology Paint hydrophobicity standards Material hydrophobicity testing standards Modified plastic hydrophobicity test Hydrophobicity test How to determine the hydrophobicity and hydrophilicity of proteins Protein hydrophobicity detection method Hydrophobic membrane surface energy calculation method Surface hydrophobicity determination How much deviation from the test method is acceptable? Film forming test method Water trap related Hydrophobic performance test Hydrophobicity test Methods for analyzing sequence hydrophobicity gb/t 42270-2022 Material hydrophobicity evaluation

《GB/T 42270-2022多孔疏水膜的疏水性能测试方法》由TC382（全国分离膜标准化技术委员会）归口，主管部门为国家标准委。

Introduction

1. Background and significance of standard formulation

Porous hydrophobic membranes have important application value in the field of separation technology, and their hydrophobic properties are directly related to membrane separation efficiency and stability. The formulation of this standard fills the gap in this field in China and provides a scientific basis for the quality assessment of porous hydrophobic membranes.

2. Comparative analysis of standard frameworks

Standard dimensions	GB/T42270-2022	Comparison standards	Advantage analysis
Scope of application	Porous hydrophobic membrane with a pore size of 0.01μm~10.0μm	GB/T32373-2015 (reverse osmosis membrane)	Narrower scope of application, more targeted
Test indicators	Water permeability pressure, critical wetting value	N/A	New critical wetting value test, more valuable for reference
Test method	Direct contact membrane distillation, vacuum membrane distillation	GB/T38902-2020 (hollow fiber membrane test)	Introducing a variety of test devices to improve accuracy

3. Explanation of core terms and application cases

Liid entressure

Definition: The minimum pressure required for water to pass through a porous hydrophobic membrane.

Case: The test results of a hollow fiber membrane produced by a certain company showed that its entressure was 0.15Mpa, which met the requirements of industrial separation.

Critical wetting value (criticalwettingvalue)

Definition: The maximum wetting depth of a porous hydrophobic membrane that can self-dehydrate.

Example: In direct contact membrane distillation, the critical wetting value of a flat membrane is 250μm, indicating that it has good self-dehydration performance.

More samples: YD/T 3934-2021 JGJ 94-2008 DL/T 5154-2012

Sample only — not a preview of GB/T 42270-2022

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