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GB/T 30918-2022 English PDF

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Q: Should I purchase the latest version GB/T 30918-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 30918-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 30918-2022: Non-oil-extended solution polymerized isoprene rubber (IR) - Evaluation procedures
Status: Valid

GB/T 30918: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30918-2022	359	Add to Cart	4 days	Non-oil-extended solution polymerized isoprene rubber (IR) - Evaluation procedures	Valid
GB/T 30918-2014	639	Add to Cart	4 days	Non-oil-extended, solution-polymerized isoprene rubber (IR) -- Evaluation procedure	Obsolete

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Basic data

Standard ID: GB/T 30918-2022 (GB/T30918-2022)
Description (Translated English): Non-oil-extended solution polymerized isoprene rubber (IR) - Evaluation procedures
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G35
Classification of International Standard: 83.060
Word Count Estimation: 18,119
Date of Issue: 2022-12-30
Date of Implementation: 2023-07-01
Older Standard (superseded by this standard): GB/T 30918-2014
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 30918-2022: Non-oil-extended solution polymerized isoprene rubber (IR) - Evaluation procedures

---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 83.060 CCSG35 National Standards of People's Republic of China Replacing GB/T 30918-2014 Non-oil-extended solution polymerized isoprene rubber (IR) Evaluation method Evaluation procedures [ISO 2303.2019, Isoprene rubber (IR)-Non-oil-extended, solution- Posted on 2022-12-30 2023-07-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Sampling and sample preparation 2 5 Physical and chemical tests of raw rubber 2 5.1 Mooney viscosity 2 5.2 Volatile matter 2 5.3 Ash content 2 6 Preparation of rubber compound samples for evaluation 2 6.1 Standard test formula 2 6.2 Procedure 3 6.2.1 Equipment and procedures 3 6.2.2 Mixing procedure of open mill 3 6.2.3 Laboratory internal mixer (LIM) mixing procedure 4 7 Evaluation of vulcanization characteristics 6 7.1 Evaluation of disc oscillating vulcanizer 6 7.2 Evaluation of rotorless vulcanizer 6 8 Tensile stress-strain performance evaluation of vulcanized rubber 7 9 Precision 7 10 Test report 7 Appendix A (Informative) Precision of Vulcanization Characteristics of Open Mixer and Laboratory Mixer 8 Appendix B (Informative) Natural Rubber Precision 10 Appendix C (informative) Precision specified in ASTM D340312 Reference 14

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 replaces GB/T 30918-2014 "Evaluation method for non-oil-extended solution polymerized isoprene rubber (IR)", and Compared with GB/T 30918-2014, except for structural adjustment and editorial changes, the main technical changes are as follows. --- Added "terms and definitions" (see Chapter 3); --- Increased the determination method of volatile matter (see 5.2); --- Increased the determination method of ash (see 5.3); --- Changed the mixing procedure of the laboratory internal mixer (LIM) as a note (see 6.2.3, 5.2.3 of the.2014 edition); ---Changed the evaluation method of vulcanization characteristics (see Chapter 7, Chapter 6 of the.2014 edition); --- Changed the symbol of the vulcanization characteristic parameters measured by the rotorless vulcanizer (see 7.2, 6.2 of the.2014 edition). This document is modified to adopt ISO 2303.2019 "Isoprene Rubber (IR) Non-oil-extended Solution Polymerization Evaluation Method". The technical differences between this document and ISO 2303.2019 and their reasons are as follows. ---Regarding normative reference documents, modify ISO 6502-1 to ISO 6502-3, and other normative reference documents are related to international standards Chinese file replacement for consistency correspondence (see Chapter 2); --- Increased the normative reference to GB/T 9881 (see Chapter 3), to facilitate the search for related terms; --- Increase the normative reference to GB/T 4498.2 (see 5.3) to meet the needs of users; --- Changed the referenced documents (see 7.2) for the evaluation of vulcanization characteristics by the rotorless vulcanizer to meet the needs of users; --- Changed the symbol of the vulcanization characteristic parameters measured by the rotorless vulcanizer (see 7.2, Chapter 10). The following editorial changes have been made to this document. ---Deleted the relevant content of "Double Conical Blender and Waring Agitator" (see the note to 6.2.3.2 in ISO 2303.2019); --- Increased the average value (see Table A.1 and Table A.2); --- Adjusted the order of the parameters in the Appendix B (informative) table (see Table B.1 to Table B.4); --- Added footnotes to the table in Appendix B (informative) (see Table B.2); --- Added Appendix C (informative) "Precision of ASTMD3403". Please note that some contents of this document may refer to patents. The issuing authority of this document does not assume the right to identify patents. This document is proposed by China Petroleum and Chemical Industry Federation. This document is sponsored by the Synthetic Rubber Sub-Technical Committee of the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35/SC6) Focus on. This document is drafted by. China National Petroleum Corporation Petrochemical Research Institute, Sailun Group Co., Ltd., Sinopec Oil Group Petrochemical Research Institute Co., Ltd., Guizhou Tire Co., Ltd., Fushun IKOS New Material Co., Ltd. The main drafters of this document. Chen Heping, Zhao Huihui, Wang Shining, Li Xiaoyin, Liu Yunheng, Chen Haihua, Jia Huiqing, Zhai Yueqin, Wu Yi, Liu Suibo, Wang Zhen, Song Jierui, Li Yuntao. This document was first published in.2014, and this is the first revision. Non-oil-extended solution polymerized isoprene rubber (IR) Evaluation method Caution --- Personnel using this document should have practical experience in formal laboratory work. This document does not address all possible security issues question. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations.

1 Scope

This document describes general non-oil-extended solution-polymerized isoprene rubber (IR). ---Physical and chemical test methods for raw rubber; ---Standard reference materials, standard test recipes, equipment and operating procedures used to evaluate vulcanization characteristics. This document applies to the evaluation of non-oil-extended solution polymerized isoprene rubber (IR).

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 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber (GB/T 528-2009, ISO 37. 2005, IDT) GB/T 1232.1 Determination of unvulcanized rubber with a disc shear viscometer - Part 1.Determination of Mooney viscosity (GB/T 1232.1-2016, ISO 289-1.2014, IDT) GB/T 2941 Rubber Physical Test Methods Specimen Preparation and Adjustment General Procedures (GB/T 2941-2006, ISO 23529. 2004, IDT) GB/T 4498.1 Determination of Rubber Ash Content Part 1.Muffle Furnace Method (GB/T 4498.1-2013, ISO 247.2006, MOD) GB/T 4498.2 Determination of Rubber Ash Content Part 2.Thermogravimetric Analysis GB/T 6038 Rubber test compound batching, mixing and vulcanization equipment and operating procedures (GB/T 6038-2006, ISO 2393. 1994, MOD) GB/T 9881 Rubber Terminology GB/T 15340 Sampling of natural and synthetic raw rubber and its sample preparation method (GB/T 15340-2008, ISO 1795.2000, IDT) GB/T 24131.1 Determination of volatile content of raw rubber - Part 1.Hot roll method and oven method (GB/T 24131.1- 2018, ISO 248-1.2011, MOD) GB/T 24131.2 Determination of volatile content of raw rubber - Part 2.Heating loss of automatic analyzer with infrared drying unit Heavy method (GB/T 24131.2-2017, ISO 248-2.2012, MOD) ISO 6502-2 Measurement of vulcanization properties of rubber using a vulcanometer Part 2.Disk oscillation vulcanometer method (Rubber-Meas- ISO 6502-3 Measurement of vulcanization properties of rubber using a vulcanometer Part 3.Rotorless vulcanometer method (Rubber- ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 30918-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 30918-2022_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 30918-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 30918-2022_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.

Question 5: Should I purchase the latest version GB/T 30918-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 30918-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.