GB/T 36065-2018Nanotechnologies—Analysis of amorphous carbon, ash and volatile of carbon nanotubes—Thermogravimetry (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

Introduction

Carbon nanotubes are nanotubes composed of carbon atoms. Carbon nanotubes have many excellent mechanical, electrical and chemical properties in many fields It has a wide range of application prospects and is a nanomaterial that has been industrially produced [1]. Amorphous carbon, ash, and volatiles in carbon nanotubes The content and its main oxidation temperature and thermal stability have a great influence on its performance and application [2, 3]. Therefore, the components of the carbon nanotube sample are accurate.

Accurate measurement and evaluation of its oxidative and thermal stability are key control parameters for the quality of carbon nanotube samples.

Thermogravimetry (referred to as TG) is to evaluate the content of different components in carbon nanotubes samples and their main oxidation temperature and heat The effective method of stability, the use of different experimental atmospheres can obtain different information [4~8]. This standard gives carbon in different experimental atmospheres Thermogravimetric analysis (TGA) techniques and specifications for nanotube samples, including different experimental atmospheres Under the TG principle and data processing process and so on. The experimental atmosphere specifically includes a carbon dioxide atmosphere, a mixed gas atmosphere of oxygen and synthetic air And nitrogen atmosphere.

The formulation of this standard will provide for the production of carbon nanotube samples, testing organizations, research institutes and related supervision and management departments.

The use of TG to analyze the contents of amorphous carbon, ash, volatiles and other components and oxidation temperature in carbon nanotubes under the same experimental atmosphere reference.

1 Scope

This standard specifies the use of thermogravimetric analysis of amorphous carbon, ash, and volatiles in carbon nanotube samples under different experimental atmospheres.

The method for measuring the main oxidation temperature and thermal stability of the carbon nanotubes and the carbon nanotubes includes an atmosphere of carbon dioxide, a mixture of oxygen and synthetic air. Gas atmosphere and nitrogen atmosphere.

This standard applies to single-wall and multi-wall carbon nanotube samples obtained by chemical vapor deposition. Carbon nanotube test obtained by other preparation methods You can refer to the implementation.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 5314 powder metallurgy powder sampling method

GB/T 6425 thermal analysis terminology

Thermal analysis method for thermal stability of GB/T 13464

GB/T 19619 nanomaterials

Thermogravimetric analysis of oxidation temperature and ash of GB/T 29189 carbon nanotubes

GB/T 30544.3 Nanotechnology terminology part 3. Carbon nano-objects

Thermal weight characterization of GB/T 32868 nanotechnology single-walled carbon nanotubes

ISO /T R10929 Nanotechnology Multi-Wall Carbon Nanotube Characterization [Nanotechnologies-Characterizationofmultiwal Carbon(MWCNT)samples]

3 Terms and definitions

GB/T 6425, GB/T 13464, GB/T 19619, GB/T 29189, GB/T 30544.3, GB/T 32868, ISO /T R10929 The defined and the following terms and definitions apply to this document.