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GB/T 20643.3-2025 English PDF

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GB/T 20643.3-2025: Special environmental condition - Environmental test method - Part 3: Artificial environmental test method and guidance - Polymer material
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GB/T 20643.3: Evolution and historical versions

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GB/T 20643.3-2025English279 Add to Cart 3 days [Need to translate] Special environmental condition - Environmental test method - Part 3: Artificial environmental test method and guidance - Polymer material Valid GB/T 20643.3-2025
GB/T 20643.3-2006English319 Add to Cart 3 days [Need to translate] Special environmental condition -- Environmental test method -- Part 3: Artificial environmental test method and guidance -- Polymer material Valid GB/T 20643.3-2006

Standard similar to GB/T 20643.3-2025

GB/T 20643.2   GB/T 20643.1   GB/T 50082   

Basic data

Standard ID GB/T 20643.3-2025 (GB/T20643.3-2025)
Description (Translated English) Special environmental condition - Environmental test method - Part 3: Artificial environmental test method and guidance - Polymer material
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K04
Classification of International Standard 19.040
Word Count Estimation 14,140
Date of Issue 2025-08-01
Date of Implementation 2026-02-01
Older Standard (superseded by this standard) GB/T 20643.3-2006
Issuing agency(ies) State Administration for Market Regulation, Standardization Administration of China

GB/T 20643.3-2025: Special environmental condition - Environmental test method - Part 3: Artificial environmental test method and guidance - Polymer material


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT20643.3-2025
ICS 19.040 CCSK04 National Standard of the People's Republic of China Replaces GB/T 20643.3-2006 Environmental test methods for special environmental conditions Part 3.Artificial simulation test methods and guidelines polymer materials Released on August 1, 2025 Implementation on February 1, 2026 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 Operating environment conditions 2 5 Artificial simulation environment test 2 5.1 General requirements 2 5.2 Test Item 2 Appendix A (Informative) Main Impacts of Environmental Factors on Polymer Materials 6 A.1 Temperature and Temperature Changes 6 A.2 Relative humidity 6 A.3 Salt spray 6 A.4 Mold 6 A.5 Low pressure 7 A.6 Solar Radiation 7 A.7 Dust 7 References 8 Table 1 Simulated environmental test items for polymer materials under special environmental conditions 2 Preface 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. This document is Part 3 of GB/T 20643 "Environmental test methods for special environmental conditions". GB/T 20643 has been published in Lower part. --- Part 1.General provisions; --- Part 2.Artificial simulation test methods and guidelines for electrical and electronic products (including communication products); --- Part 3.Artificial simulation test methods and guidelines for polymer materials. This document replaces GB/T 20643.3-2006 "Special environmental conditions environmental test methods Part 3.Artificial simulation test method" Compared with GB/T 20643.3-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The content of "Scope" has been changed to include humid heat, humid heat ocean, and cold special environmental conditions (see Chapter 1,.2006 edition, Section 1). chapter); b) Changed the “Environmental Conditions of Use” (see Chapter 4, Chapter 3 of the.2006 edition); c) "General requirements" has been changed (see 5.1, 4.1 of the.2006 edition); d) The content of Table 1 has been modified (see Table 1, Table 1 of the.2006 edition); e) Deleted "Recommended Tests" (see 4.3 of the.2006 edition); f) “Test equipment” has been deleted (see Chapter 5 of the.2006 edition). 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 is proposed and coordinated by the China Electrical Equipment Industry Association. This document was drafted by. China Electric Power Research Institute Co., Ltd., Shenzhen INVT Electric Vehicle Drive Technology Co., Ltd., Weikai Testing Technology Co., Ltd., Tsinghua University Shenzhen International Graduate School, China Southern Power Grid Integrated Energy Co., Ltd., Tianjin Aerospace Ruilai Technology Co., Ltd., Shenzhen Polytechnic University, CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Shenzhen Customs Industrial Products Inspection Technology Center Center, Beijing University of Science and Technology, China Special Aircraft Research Institute, General Machinery Key Core Basic Parts Innovation Center (Anhui) Co., Ltd., Hainan Electric Electric Power Research Institute of State Grid Corporation of China and Electric Power Research Institute of State Grid Fujian Electric Power Co., Ltd. The main drafters of this document are. Liu Xin, Zhao Xueru, Gao Jun, Lü Tianyi, Zheng Ziying, Wang Xilin, Xia Yunfeng, Mou Haowen, Wang Xiaoxiang, Guo Zhijia, Qin Jian, Jia Zhidong, Cheng Xuequn, Mu Xianlian, Li Yiying, Zhao Hailong, Xia Xiaojian, and Yan Kanghua. The previous versions of this document and the documents it replaces are as follows. ---First published in.2006 as GB/T 20643.3-2006; ---This is the first revision.

introduction

GB/T 20643 "Environmental test methods for special environmental conditions" covers the test methods of products in my country's dry heat, dry hot desert, plateau, damp heat, damp heat Artificial simulation test methods and guidelines for special climate types such as ocean and cold. Currently, GB/T 20643 consists of three parts. --- Part 1.General. The purpose is to propose general rules for natural atmosphere exposure tests and artificial simulation tests under special environmental conditions. and gives general guidance for environmental testing. --- Part 2.Artificial simulation test methods and guidelines for electrical and electronic products (including communication equipment). The purpose is to propose electrical and electronic products (including communication equipment) artificial simulation test methods and guidelines under special environmental conditions. --- Part 3.Artificial simulation test methods and guidelines for polymer materials. The purpose is to propose the characteristics of polymer materials under special environmental conditions. Artificial simulation test methods and guidelines. "Special environmental conditions test" is to expose the sample to natural or artificial simulated dry heat, dry hot desert, plateau, damp heat, wet The special climate conditions of hot ocean, cold and other regions, thus affecting the storage, transportation and use of the products in actual use. If required by the relevant standards, these test methods can also be used for type testing, batch sampling testing, quality control, etc. Quantity inspection test and other types of tests. Environmental test methods for special environmental conditions Part 3.Artificial simulation test methods and guidelines polymer materials

1 Scope

This document specifies the requirements for plastics, rubber, coatings, etc. under six special environmental conditions. dry heat, dry hot desert, plateau, humid heat, humid hot ocean, and cold. Artificial simulation test methods and guidelines for polymer materials. This document is applicable to assessing the environmental adaptability of polymer materials used under special environmental conditions.

2 Normative references

The contents of the following documents constitute the 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 2423.1 Environmental testing for electric and electronic products Part 2.Test methods Test A. Low temperature GB/T 2423.2 Environmental testing for electric and electronic products Part 2.Test methods Test B. High temperature GB/T 2423.3 Environmental testing Part 2.Test methods Test Cab. Steady state damp heat test GB/T 2423.4 Environmental testing for electric and electronic products - Part 2.Test methods - Test Db. Cyclic damp heat (12h 12h cycle) GB/T 2423.16 Environmental testing Part 2.Test methods and guidance. Mildew growth GB/T 2423.17 Environmental testing Part 2.Test methods Test Ka. Salt spray GB/T 2423.22 Environmental testing Part 2.Test methods Test N. Temperature change GB/T 2423.27 Environmental testing Part 2.Test methods Test methods and guidance. Temperature/low pressure or temperature/humidity/low Comprehensive air pressure test GB/T 2423.37 Environmental testing for electric and electronic products Part 2.Test methods Test L. Dust test GB/T 2423.65 Environmental testing Part 2.Test methods Test. Salt spray/temperature/humidity/solar radiation combination GB/T 9286 Paints and varnishes cross-cut test GB/T 14522 Test method for artificial weathering of plastics, coatings and rubber materials for use in mechanical industrial products - Fluorescent UV lamp GB/T 16422.2 Plastics laboratory light source exposure test method Part 2.Xenon arc lamp GB/T 20625-2024 Terminology for special environmental conditions GB/T 32088 Xenon arc accelerated aging test method for automotive non-metallic parts and materials

3 Terms and Definitions

The terms and definitions defined in GB/T 20625-2024 apply to this document.

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