GB/T 36086-2018 English PDF

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GB/T 36086-2018: Nanotechnology -- Determination of contact angles of nano powders -- Washburn dynamic pressure method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36086-2018	359	Add to Cart	4 days	Nanotechnology -- Determination of contact angles of nano powders -- Washburn dynamic pressure method	Valid

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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

---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.
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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