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GB/T 36086-2018: Nanotechnology -- Determination of contact angles of nano powders -- Washburn dynamic pressure method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 36086-2018 | English | 359 |
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Nanotechnology -- Determination of contact angles of nano powders -- Washburn dynamic pressure method
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GB/T 36086-2018
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Basic data | Standard ID | GB/T 36086-2018 (GB/T36086-2018) | | Description (Translated English) | Nanotechnology -- Determination of contact angles of nano powders -- Washburn dynamic pressure method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A40 | | Classification of International Standard | 71.040.50 | | Word Count Estimation | 18,122 | | Date of Issue | 2018-03-15 | | Date of Implementation | 2018-10-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 36086-2018: Nanotechnology -- Determination of contact angles of nano powders -- Washburn dynamic pressure method
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Nanotechnology--Determination of contact angles of nanopowders--Washburn dynamic pressure method
ICS 71.040.50
A40
National Standards of People's Republic of China
Nanotechnology Nano Powder Contact Angle Measurement
Washburn dynamic pressure method
Published by.2018-03-15
2018-10-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration released
Directory
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and definitions, symbol 1
4 Principle 2
5 Instruments and Materials 5
6 Test method 5
7 The main source of measurement uncertainty 6
8 Test Report 7
Appendix A (informative) Appendix Washburn dynamic pressure measurement powder contact angle example 8
Appendix B (Informative) Powder Contact Angle Test Report 11
Reference 13
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the Chinese Academy of Sciences.
This standard is under the jurisdiction of the National Nanotechnology Standardization Technical Committee (SAC/TC279).
This standard was drafted by. East China Normal University, National Nanoscience Center.
The main drafters of this standard. Ma Shiyi, Chen Banglin, Liu Xiaoxiao, Ge Guanglu, Han Qingping, Xu Jian.
Introduction
Powder materials have a wide range of applications in industries such as industry, agriculture, environmental protection, and medicine. In the preparation and application of powder materials
In these, it is often necessary to understand the degree of wetting of the powder by the liquid. The contact angle method for measuring the degree of wetting of liquids on flat plates has been well established.
This method is directly used to characterize the degree of wetting of liquids to powders. Measurement of powder connection by Washburn dynamic pressure method
The antennae can accurately reflect the degree of wetting of the powder by the liquid, and is of great significance to the development of the powder material.
Nanotechnology Nano Powder Contact Angle Measurement
Washburn dynamic pressure method
1 Scope
This standard specifies the Washburn dynamic pressure method to measure the contact angle of nano-powder.
This standard applies to the contact of liquids and nano-powders without chemical reaction, dissolution or swelling, and the measurement of the contact angle only when wetting occurs.
the amount. The contact angle measurement of other powder materials can refer to this standard.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 24368-2009 Determination of contact angle of hydrophobic surface contamination on glass surface
GB/T 30693-2014 Measurement of contact angle of plastic film with water
3 Terms and definitions, symbols
3.1 Terms and Definitions
The terms and definitions defined in GB/T 24368-2009 and GB/T 30693-2014 apply to this document.
3.1.1
Wet wetting
The process of replacing one liquid with another on a solid surface.
3.1.2
Contact angle contactangle
After the droplets reach equilibrium on the surface of the solid, the tangent to the gas/liquid interface is made from the solid/liquid/gas three-phase boundary point. This tangent passes through the liquid and solid/
The angle between the liquid junction lines.
3.1.3
Forward angle advancingangle
The maximum angle that can be observed when the droplet size increases.
3.1.4
Receding angle
The smallest angle that can be observed when the droplet size is reduced.
3.1.5
Powder contact angle contactangleofpowder
The contact angle of the liquid on the powder particles usually refers to the advancing angle.
3.1.6
Washburn dynamic pressure method Washburn dynamicpressure method
The method of calculating the contact angle of the liquid on the powder particles is measured by measuring the pressure change of the closed gas in the sample tube when the liquid penetrates.
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