SS-ISO-9924-2 Rubber and rubber products - Determination of the composition of vulcanizates and uncured compounds by thermogravimetry - Part 2: Acrylonitrile-butadiene and halobutyl rubbers

SS-ISO-9924-2 - EDITION 1 - CURRENT


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 EDITION 1 - Oct. 6, 2000
 Amd 1:2013 EDITION AMENDMENT - May 6, 2013

1.1 This part of ISO 9924 specifies a thermogravimetric method for determining the total organic content, carbon black content, carbonaceous residue and ash in vulcanizates and uncured compounds containing polymers which form a carbonaceous residue on pyrolysis (see 1.2). The loss in mass at around 300 °C is an approximate guide to the volatile-matter content of the compound. 1.2 The method is suitable for the analysis of rubber compounds and vulcanizates containing the hydrocarbon polymers covered by part 1 of this International Standard plus the following copolymers with polar groups which form a carbonaceous residue on pyrolysis: a) acrylonitrile-butadiene copolymers (NBRs); b) carboxylated acrylonitrile-butadiene copolymers (XNBRs); c) hydrogenated acrylonitrile-butadiene copolymers (HNBRs); d) chlorinated isobutylene-isoprene copolymers (CIIRs); e) brominated isobutylene-isoprene copolymers (BIIRs). NOTE 1 The field of application of the method may be extended to include the analysis of compounds containing rubbers different from those given in this clause provided that the applicability of the method is tested beforehand using known compounds or vulcanizates having similar composition. NOTE 2 The method is not suitable for compounds containing mineral fillers, such as carbonates or hydrated aluminium oxides, which decompose in the temperature range from 25 °C to 800 °C, unless suitable corrections based on prior knowledge of filler behaviour can be made. NOTE 3 The method is not suitable for the determination of the total polymer content of compounds containing non-rubber organic ingredients that cannot be completely removed by solvent extraction carried out in accordance with ISO 1407.

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Designation Name

SS-ISO 9924-2

Revision Level

EDITION 1

Status

Current

Publication Date

Oct. 6, 2000

Language(s)

English

Page Count

12

International Equivalent

ISO 9924-2:2000(IDT)