GB/T 4498.2-2017Rubber - Determination of ash - Part 2: Thermogravimetric analysis (English PDF)
橡胶 灰分的测定 第2部分：热重分析法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 1, 2017
Implementation date
May 1, 2018
Scope
GB/T 4498.2-2017 is the English-translated version of 橡胶 灰分的测定 第2部分：热重分析法.
GB/T 4498.2-2017 is the Chinese standard "Rubber - Determination of ash - Part 2: Thermogravimetric analysis". Its scope clause reads: This section GB/T 4498 specifies the use of thermogravimetric analyzer (TGA) Determination of raw rubber, rubber and vulcanized rubber ash two method.
This section applies to GB/T 5576 provisions of the M, O, R and U raw rubber, rubber and vulcanized rubber ash determination. --- Method A for measuring raw rubber. --- Method B for the determination of rubber and vulcanized rubber.
This section does not include to explain the rubber compound or vulcanized rubber in the inorganic chemical composition and ash. Note that these two methods do not always give the same result. Its clauses include principle; reagents or materials; equipment.
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Document preview — GB/T 4498.2-2017
National Standard of the People's Republic of China
- ICS
- 83.060
- Classification
- G 40
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 principle
- 4 Reagents or materials
- 5 equipment
1 Scope
This section GB/T 4498 specifies the use of thermogravimetric analyzer (TGA) Determination of raw rubber, rubber and vulcanized rubber ash two method.
This section applies to GB/T 5576 provisions of the M, O, R and U raw rubber, rubber and vulcanized rubber ash determination.
--- Method A for measuring raw rubber.
--- Method B for the determination of rubber and vulcanized rubber.
This section does not include to explain the rubber compound or vulcanized rubber in the inorganic chemical composition and ash.
Note that these two methods do not always give the same result.
2 Normative references
The following documents for the application of this document is essential. 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 5576 rubber and latex nomenclature
GB/T 15340 natural, synthetic raw gum sampling and sample preparation methods
GB/T 17783 vulcanized rubber samples and the preparation of the sample --- chemical test
Determination of volatiles content of raw rubber GB/T 24131-2009
3 principle
The known quality of the rubber sample heated under nitrogen decomposition, to be completely decomposed after the sample, switch to oxygen or air, continue heating
Until the carbonaceous material is completely burnt out and reaches a constant weight, the mass of the residue is the mass of ash.
4 Reagents or materials
4.1
Nitrogen gas Purity >= 99.99% (volume fraction).
4.2 Oxygen
Purity >= 99.99% (volume fraction), or air.
5 equipment
5.1
Thermogravimetric Analyzer, including the following components.
a) hot balance;
b) heating furnace;
......
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
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