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

非充油溶液聚合型异戊二烯橡胶（IR）评价方法

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

July 1, 2023

Scope

GB/T 30918-2022 is the English-translated version of 非充油溶液聚合型异戊二烯橡胶（IR）评价方法.

GB/T 30918-2022 is the Chinese standard "Non-oil-extended solution polymerized isoprene rubber (IR) - Evaluation procedures".

Its scope clause reads: 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).

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Document preview — GB/T 30918-2022

National Standard of the People's Republic of China

ICS: 83.060
Classification: G 35
Replacing: GB/T 30918-2014

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Sampling and sample preparation
5 Physical and chemical tests of raw rubber
5.1 Mooney viscosity
5.2 Volatile matter
5.3 Ash content
6 Preparation of rubber compound samples for evaluation
6.1 Standard test formula
6.2 Procedure
6.2.1 Equipment and procedures
6.2.2 Mixing procedure of open mill
6.2.3 Laboratory internal mixer (LIM) mixing procedure
7 Evaluation of vulcanization characteristics
7.1 Evaluation of disc oscillating vulcanizer
7.2 Evaluation of rotorless vulcanizer
8 Tensile stress-strain performance evaluation of vulcanized rubber
9 Precision
10 Test report
Appendix A (Informative) Precision of Vulcanization Characteristics of Open Mixer and Laboratory Mixer
Appendix B (Informative) Natural Rubber Precision
Appendix C (informative) Precision specified in ASTM D340

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-

GB/T 40126 | GB/T 40125 | GB/T 36089 | GB/T 30922 | GB/T 30914 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 37 · ISO 289 · ISO 23529 · ISO 247.2006 · ISO 2393 · ISO 1795.2000 · ISO 248 · ISO 6502

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