GB/T 42718-2023 English PDF

US$379.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42718-2023: General technical requirements for electro-conductive material-over-foam gasket
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42718-2023	379	Add to Cart	4 days	General technical requirements for electro-conductive material-over-foam gasket	Valid

Similar standards

GB/T 44652   GB/T 40100   GB/T 40093   GB/T 20236   GB/T 16679.1   

Basic data

Standard ID: GB/T 42718-2023 (GB/T42718-2023)
Description (Translated English): General technical requirements for electro-conductive material-over-foam gasket
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K04
Classification of International Standard: 17.220.99
Word Count Estimation: 20,264
Date of Issue: 2023-05-23
Date of Implementation: 2023-12-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42718-2023: General technical requirements for electro-conductive material-over-foam gasket

---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.
ICS17:220:99 CCSK04 National Standards of People's Republic of China Electromagnetic Shielding Effectiveness of Wrapped Foam Pads General Technical Requirements Released on 2023-05-23 2023-12-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Technical requirements 2 4:1 Shielding effectiveness under working thickness 2 4:2 Resistance under working thickness 2 4:3 Compression set 3 4:4 Flame retardant performance 3 4:5 Environmental requirements 3 4:6 Appearance 4 5 Test method 4 5:1 Test conditions 4 5:2 Shielding effectiveness under working thickness 4 5:3 Resistance under working thickness 4 5:4 Compression set 4 5:5 Flame retardant performance 5 5:6 Environmental requirements 5 5:7 Appearance 5 6 Inspection rules 5 6:1 General Inspection Rules 5 6:2 Inspection classification 5 6:3 Factory inspection 5 6:4 Type inspection 5 7 Labeling, packaging, transportation and storage 6 7:1 Flag 6 7:2 Packaging 6 7:3 Transport 6 7:4 Storage 6 Appendix A (Normative) Test Method for Shielding Effectiveness of Wrapped Foam Pad 7 Appendix B (Normative) Test method for resistance under working thickness of wrapped foam pad 10 Reference 12

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: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Electrical Equipment Industry Association: This document is under the jurisdiction of the National Standardization Technical Committee on Electromagnetic Shielding Materials (SAC/TC323): This document was drafted by: Maxim New Materials Co:, Ltd:, Shanghai Institute of Metrology and Testing Technology, Shenzhen Feirongda Technology Co:, Ltd: Co:, Ltd:, Jiangsu Institute of Quality and Standardization, Institute of Metal Research, Chinese Academy of Sciences, Chengdu Moore Huanyu Testing Technology Co:, Ltd:, Jinan Zhongzheng New Materials Co:, Ltd: The main drafters of this document: Chen Weibin, Chen Chaochan, Shi Weiwei, Yu Xiaolei, Ma Song, Chen Nan, Li Changlin, Li Siqing, Miao Yi: Electromagnetic Shielding Effectiveness of Wrapped Foam Pads General Technical Requirements

1 Scope

This document specifies the technical requirements, inspection rules, signs, and packaging of foam cushion materials in the frequency range of 10kHz~40GHz: Requirements for packaging, transportation and storage, and the corresponding test methods are described: This document applies to the design, production and testing of wrapped foam gasket materials for electromagnetic shielding, grounding, etc: applications:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 191 Packaging, storage and transportation icon marks GB/T 2828:1 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling plan retrieved by acceptance quality limit (AQL) GB/T 2829-2002 Sampling procedure and table for periodic inspection counting (applicable to inspection of process stability) GB/T 5169:16-2017 Fire Hazard Tests for Electrical and Electronic Products Part 16: Test Flame 50W Horizontal and Vertical Fire Flame test method GB/T 6669-2008 Determination of compression set of flexible foam polymeric materials GB/T 26125 Determination of six restricted substances (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers) in electrical and electronic products GB/T 26572 Limit Requirements for Restricted Substances in Electrical and Electronic Products GB/T 26667 Terminology of electromagnetic shielding materials

3 Terms and Definitions

The following terms and definitions defined in GB/T 26667 apply to this document: 3:1 Wrapped foam linerelectro-conductivematerial-over-foamgasket Shaped conductive foam pad A type of electromagnetic shielding material that wraps a layer of conductive material outside the foam and fixes it on the working equipment to play the role of electromagnetic shielding or grounding: 3:2 SE At a certain point under the same excitation, the ratio of the electric field strength, magnetic field strength or power measured when there is a shielding material to that when there is no shielding material: 3:3 initial thickness initialthickness Ti The original thickness of the wrap foam pad before compression: ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42718-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42718-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42718-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42718-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.