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GB/T 41928-2022 English PDF

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US$184.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 41928-2022: Plastics - Epoxy resins - Determination of degree of crosslinking of crosslinked epoxy resins by differential scanning calorimetry(DSC)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41928-2022	184	Add to Cart	3 days	Plastics - Epoxy resins - Determination of degree of crosslinking of crosslinked epoxy resins by differential scanning calorimetry(DSC)	Valid

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Basic data

Standard ID: GB/T 41928-2022 (GB/T41928-2022)
Description (Translated English): Plastics - Epoxy resins - Determination of degree of crosslinking of crosslinked epoxy resins by differential scanning calorimetry(DSC)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G32
Classification of International Standard: 83.080.10
Word Count Estimation: 10,192
Date of Issue: 2022-12-30
Date of Implementation: 2023-04-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41928-2022: Plastics - Epoxy resins - Determination of degree of crosslinking of crosslinked epoxy resins by differential scanning calorimetry(DSC)

---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 83.080.10 CCSG32 National Standards of People's Republic of China Plastic Epoxy Differential Scanning Calorimetry (DSC) Determination of the degree of crosslinking of crosslinked epoxy resins (ISO 14322.2018, IDT) Posted on 2022-12-30 2023-04-01 Implementation State Administration for Market Regulation Released 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 for Standardization Documents" drafting. This document is equivalent to ISO 14322.2018 "Plastic Epoxy Resin Differential Scanning Calorimetry (DSC) Determination of Cross-linked Epoxy Resin Cross-linking Calorimetry" Liandu". 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 Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC15). This document is drafted by. Sinopec Baling Petrochemical Co., Ltd., Zhonglan Chenguang Chengdu Testing Technology Co., Ltd., People's Republic of China Qingdao Dagang Customs, Zhejiang Chennuo Polymer Materials Co., Ltd., Foshan Shirui Advertising Logo Co., Ltd., Qingdao Customs Technology Center, Shanghai Haifuchen Chemical Co., Ltd., Qingdao Institute of Product Quality Inspection, Liaocheng University, CGN Juner (Zhejiang) New Material Co., Ltd., Jilin Province Product Quality Supervision and Inspection Institute, Dongguan Guozhong New Material Research Institute Co., Ltd., Shanghai Daoyi Semiconductor Materials Co., Ltd., Jiangmen City Deshan Complex Hehe Materials Technology Co., Ltd., Complex High-tech Materials (Shanghai) Co., Ltd., Jiangsu Taitel New Material Technology Co., Ltd. The main drafters of this document. Zheng Wenyan, Liu Lirong, Gao Jianguo, Liu Ming, Weng Weijun, Yuan Wei, Wang Lun, Ju Yuanqin, Qiao Haiqing, Teng Mouyong, Zhou Huijun, Li Shangyu, Guo Yingying, Wang Meiling, Chen Cuiping, Wu Deshan, Wang Ruiliang, Han Jianwei. Plastic Epoxy Differential Scanning Calorimetry (DSC) Determination of the degree of crosslinking of crosslinked epoxy resins

1 Scope

This document describes the use of Differential Scanning Calorimetry (DSC) to measure the heat of reaction generated during the crosslinking of epoxy resins and calculates based on the results. The method of calculating the degree of crosslinking. This document applies to epoxy resin systems with moderate or slow crosslinking reactions. This document is not applicable to systems with fast crosslinking reactions at room temperature.

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. ISO 11357-1 Plastics Differential Scanning Calorimetry (DSC) Part 1.General [Plastics-Differentialscanning Note. GB/T 19466.1-2004 Plastic Differential Scanning Calorimetry (DSC) Part 1.General Rules (ISO 11357-1.1997, IDT) ISO 11409 Determination of heat of reaction and reaction temperature of plastic phenolic resins by differential scanning calorimetry (Plastics-Phenolic Note. GB/T 32681-2016 Determination of reaction heat and reaction temperature by differential scanning calorimeter method for plastic phenolic resin (ISO 11409.1993, MOD)

3 Terms and Definitions

The terms and definitions defined in ISO 11357-1 and the following apply to this document. 3.1 degree of crosslinking Indicates the degree of crosslinking reaction of the epoxy resin system. Note. Expressed as a percentage, calculated according to formula (2) in Chapter 8. 3.2 Epoxy resin, curing agent and accelerator are uniformly mixed together, and the glue system before any reaction occurs. 3.3 total heat of reaction totalheatofreaction The total amount of reaction heat generated during the completion of crosslinking of an uncrosslinked epoxy resin system (see 3.2) as determined by DSC. Note. expressed in joules per gram (J·g-1).

4 principles

The total heat of reaction was first measured by DSC for the uncrosslinked epoxy resin system samples. Curve A in Figure 1 is this DSC test curve ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41928-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41928-2022_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 41928-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41928-2022_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.