GB/T 14837.3-2018: Rubber and rubber products -- Determination of the composition of vulcanizates and uncured compounds by thermogravimetry -- Part 3: Hydrocarbon rubbers, halogenated rubbers and polysiloxane rubbers after extraction

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Scope

This Part of GB/T 14837 specifies a thermogravimetric method for the determination of the
main constituents of rubber compounds such as elastomer(s), carbon black and mineral filler.
This method establishes the “fingerprint” of the tested material. However, the result does not
always correspond exactly to the theoretical formula of the rubber.
This Part applies to raw or compounded rubbers, vulcanized and unvulcanized, after
preliminary extraction.
This Part applies to rubbers with hydrocarbon backbones (NR, BR, SBR, IIR, EPDM, ACM,
AEM, etc.) used alone or as mixtures. For the mixtures, the polymer content corresponds to the
total rubber, and it is not usually possible to identify individual polymers.
This Part applies to rubbers with halogenated hydrocarbon backbones (CR, CSM, FKM, CM,
CO, ECO, etc.) or containing nitrogen (NBR, HNBR, NBR/PVC, etc.), as well as to their
mixtures. However, these rubbers often form carbonaceous residues which interfere with the
analysis. Application of an appropriate procedure minimizes these interferences.
This Part also applies to rubbers with a polysiloxane backbone (VMQ, etc.) and to rubbers not
listed above.

Basic Data

Standard ID	GB/T 14837.3-2018 (GB/T14837.3-2018)
Description (Translated English)	Rubber and rubber products -- Determination of the composition of vulcanizates and uncured compounds by thermogravimetry -- Part 3: Hydrocarbon rubbers, halogenated rubbers and polysiloxane rubbers after extraction
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G40
Classification of International Standard	83.060
Word Count Estimation	18,116
Date of Issue	2018-03-15
Date of Implementation	2018-10-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration