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GB/T 8081-2018Rubber, raw natural -- Guidelines for the specification of technically specified rubber (TSR) (English PDF)

天然生胶技术分级橡胶(TSR)规格导则

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 28, 2018

Implementation date

November 1, 2019

Scope

GB/T 8081-2018 is the English-translated version of 天然生胶技术分级橡胶(TSR)规格导则.

GB/T 8081-2018 is the Chinese standard "Rubber, raw natural -- Guidelines for the specification of technically specified rubber (TSR)". Its scope clause reads: This standard provides guidelines for the specification of natural rubberized rubber graded rubber (TSR), which is classified according to the type of natural rubber and its properties.

Claim. This standard applies to all parties involved in the TSR and may serve as a basis for setting more stringent requirements under certain circumstances. therefore, This standard also lists some guidelines that require the consent of all parties concerned. Its clauses include terms and definitions.

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Document preview — GB/T 8081-2018

National Standard of the People's Republic of China

ICS: 83.040.10
Classification: B 72
Replacing: GB/T 8081-2008

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

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 raw material composition
5 hierarchical structure
6 Specifications
7 sampling
8 Packing

1 Scope

This standard provides guidelines for the specification of natural rubberized rubber graded rubber (TSR), which is classified according to the type of natural rubber and its properties.

Claim.

This standard applies to all parties involved in the TSR and may serve as a basis for setting more stringent requirements under certain circumstances. therefore,

This standard also lists some guidelines that require the consent of all parties concerned.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1232.1 Determination of non-vulcanized rubber - Part 1 . Determination of Mooney viscosity (GB/T 1232.1-2016, ISO 289-1..2014, IDT)

GB/T 3510 Determination of plasticity of unvulcanized rubber - Rapid plasticity method (GB/T 3510-2006, ISO .2007..1991, IDT)

GB/T 3517 Determination of plastic retention rate (PRI) of natural rubber (GB/T 3517-2014, ISO 2930.2009, MOD)

GB/T 4498.1 Determination of rubber ash - Part 1 . Muffle furnace method (GB/T 4498.1-2013, ISO 247.2006,

MOD)

GB/T 8086 Determination of impurities in natural rubber (GB/T 8086-2008, ISO 249.1995, MOD)

GB/T 8088 Determination of nitrogen content of natural rubber and natural latex (GB/T 8088-2008, ISO 1656.1996, MOD)

GB/T 14796 Determination of natural rubber color index (GB/T 14796-2008, ISO 4660.1999, IDT)

GB/T 15340 Natural and synthetic raw rubber sampling 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 24797.2 Film for rubber packaging - Part 2. Natural rubber (GB/T 24797.2-2014, ISO 20299-2.

2006, IDT)

ISO 17278 Determination of gel content of natural rubber graded rubber (TSR) [Rubber, rawnatural-Determina-

Tionofthegelcontentoftechnicalyspecifiedrubber(TSR)]

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Technical grade rubber technicalyspecifiedrubber; TSR

Natural rubber made from the latex of Heeveabrasiliensis (usually processed into a block glue) with the corresponding grade

Matching performance.

3.2 Constant viscose constantviscosity (CV) rubber

Natural rubber with controlled viscosity, usually treated with a viscosity stabilizer before or after the drying process. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 289 · ISO 2930.2009 · ISO 247.2006 · ISO 249.1995 · ISO 1656.1996 · ISO 4660.1999 · ISO 1795.2000 · ISO 248 · ISO 20299 · ISO 17278

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