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GB/T 40725-2021 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40725-2021: Test method of dipped cord and rubber adhesive peeling performance
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40725-2021	139	Add to Cart	3 days	Test method of dipped cord and rubber adhesive peeling performance	Valid

Similar standards

GB/T 36363 GB/T 20786 GB 18241.1 GB/T 32110 GB/T 32105

Basic data

Standard ID: GB/T 40725-2021 (GB/T40725-2021)
Description (Translated English): Test method of dipped cord and rubber adhesive peeling performance
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G47
Word Count Estimation: 7,721
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40725-2021: Test method of dipped cord and rubber adhesive peeling performance

---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.
Test method of dipped cord and rubber adhesive peeling performance ICS 83.140.99 CCSG47 National Standards of People's Republic of China Test method for adhesion and peeling performance of dipped cord and rubber Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

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 of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is organized by the National Rubber and Rubber Products Standardization Technical Committee Dipping Skeleton Material Sub-Technical Committee (SAC/TC35/SC13) Focus. Drafting organizations of this document. Shenma Industrial Co., Ltd., Pingdingshan Shenma Cord Fabric Development Co., Ltd., Ningbo Karcher Tape Co., Ltd. Company, Qingdao University of Science and Technology, Jinhua Yalun Chemical Fiber Co., Ltd., Qingdao Shengruida Magnetic Material Co., Ltd., Qingdao Shengke Material Co., Ltd., Qingdao Keda New Rubber and Plastic Technology Service Co., Ltd., Qingdao New Material Science and Technology Industrial Park Development Co., Ltd., Dongping Golden Horse Cord Fabric Co., Ltd. company. The main drafters of this document. Duan Wenliang, Wu Xiao, Ying Jianli, Liu Li, Xiang Jun, Li Xin, Zhang Huiyun, Sun Lishui, Qiao Sihuai, Liu Yong, Zhang Electronics, Li Xiaohui, Wang Jie, He Zehan, Li Jifang, Zhai Chaoyang, Xi Xinjun, Zhou Bingqian, Lu Zhongxin, Zheng Yunsuo. Test method for adhesion and peeling performance of dipped cord and rubber

1 Scope

This document describes the test method for the peel strength of a single dipped cord to the rubber and the rubber coverage of the cord surface after peeling. This document is applicable to fiber-made dipped cords and rubber vulcanization bonding and peeling performance tests, and peeling performance of dipped yarns, cords and rubber The test can be used as reference.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations 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 2941 Rubber Physical Test Method Sample Preparation and Adjustment General Procedure GB/T 6038 Rubber test compound batching, mixing and vulcanization equipment and operating procedures GB/T 8170 Numerical rounding rules and the expression and determination of limit values GB/T 12833 Multimodal curve analysis in the determination of tear strength and adhesive strength of rubber and plastics GB/T 32110 Terms and definitions of dipped framework materials

3 Terms and definitions

The terms and definitions defined in GB/T 32110 apply to this document.

4 Test principle

A single dipped cord is arranged in a mold according to a certain rule and then made into a sample mold blank with rubber in a certain order, and prepared after vulcanization Into a flat strip sample. Use a tensile testing machine to peel off the adhesion interface between the cord and the rubber in the sample at a constant speed, and determine the peeling The mid-peak value of the peeling force during the process, the ratio of this value to the number of cords in the peeled sample is the peeling force of a single dipped cord, and the unit is N/piece; After peeling, the ratio of the effective rubber coverage area on the surface of the dipped cord to the effective peeling area is the rubber coverage of the sample. Represented as a percentage.

5 Equipment and tools

5.1 Tensile testing machine Use a constant velocity elongation (CRE) type tensile testing machine, which should meet the following technical requirements. a) Electric drive and equipped with suitable non-inertial force measuring device; b) A computer software and hardware system that complies with the test data recording and processing specified in GB/T 12833; c) With a holder for holding the sample, the clamping surfaces of the two holders should be kept in the same vertical plane during the test; d) The specimen is clamped by the holder, and the specimen should not be slipped or damaged. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40725-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40725-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 40725-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40725-2021_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.