GB/T 45469-2025 English PDF

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GB/T 45469-2025: Microbeam analysis - Transmission electron microscopy - Preparation methods of ultrathin section of polymer composites
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GB/T 45469-2025	359	Add to Cart	4 days	Microbeam analysis - Transmission electron microscopy - Preparation methods of ultrathin section of polymer composites	Valid

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Basic data

Standard ID: GB/T 45469-2025 (GB/T45469-2025)
Description (Translated English): Microbeam analysis - Transmission electron microscopy - Preparation methods of ultrathin section of polymer composites
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G04
Classification of International Standard: 71.040.99
Word Count Estimation: 18,139
Date of Issue: 2025-03-28
Date of Implementation: 10/1/2025
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45469-2025: Microbeam analysis - Transmission electron microscopy - Preparation methods of ultrathin section of polymer composites

---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.
ICS 71.040.99 CCSG04 National Standard of the People's Republic of China Microbeam analysis transmission electron microscopy Preparation method of ultra-thin slices of polymer composite materials Released on 2025-03-28 2025-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Sample Preparation 2 5 Ultrathin section preparation 3 6 Transmission electron microscopy of ultrathin section specimens 6 Appendix A (Informative) Formulas of Commonly Used Reagents 7 Appendix B (Informative) Glass transition temperature of polymers 9 Reference 11

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 is required. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed and coordinated by the National Microbeam Analysis Standardization Technical Committee (SAC/TC38). The drafting units of this document. Zhejiang University, Fudan University, Shanghai Jiao Tong University, and Jiangsu Leibo Scientific Instrument Co., Ltd. The main drafters of this document are. Hong Jian, Wang Hua, Zhang Xiaomin, Zhao Xiaohuan, Zhou Guangrong, Wang Ge, Zheng Xi, Xu Ying, Xia Qiuhua.

Introduction

When using transmission electron microscopy to observe polymer composites, ultrathin section sample preparation is the key. The multi-component, multi-phase system with different chemical properties and various reinforcing materials and filling materials has excellent mechanical and other properties. So far, there is no unified technology for preparing ultrathin sections of polymer composites under electron microscopy. In order to standardize the preparation method of electron microscope ultrathin sections of polymer composites, This document is specially formulated. Microbeam analysis transmission electron microscopy Preparation method of ultra-thin slices of polymer composite materials

1 Scope

This document specifies the method and technical specifications for the preparation of ultrathin section samples of polymer composites for transmission electron microscopy observation. This document is applicable to the preparation of polymer composite samples that can be ultra-thinly sectioned at room temperature or under freezing conditions.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 30544.4-2019 Nanotechnology Terminology Part 4.Nanostructured Materials

3 Terms and definitions

The terms and definitions defined in GB/T 30544.4-2019 and the following apply to this document. 3.1 polymer A high molecular weight compound composed of one or several structural units repeatedly connected by covalent bonds. 3.2 Polymer composite material polymercomposite A multi-component, multi-phase system with polymer as the matrix and various reinforcing materials and filling materials, which has excellent mechanical properties. And other performance. 3.3 Nanoscale The size range is about 1nm~100nm. NOTE 1 This size range generally, but not exclusively, exhibits properties that cannot be extrapolated from larger sizes. For these properties, the upper and lower limits of the scale are is approximate. Note 2.The purpose of introducing a lower limit (about 1 nm) in this definition is to avoid the default of a single or small cluster of atoms being a nano-object or nano-structure when no lower limit is set. unit. [Source. GB/T 30544.4-2019, 2.1] 3.4 Nanomaterials Any material whose external dimension, internal or surface structure is at the nanoscale. NOTE This generic term includes nano-objects and nano-structured materials. [Source. GB/T 30544.4-2019, 2.3] 3.5 Nanocomposite A solid mixture consisting of two or more phase-separated materials, one or more of which is a nanophase. ......

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