BS ISO 9924-1:2000
Rubber and rubber products - Determination of the composition of vulcanizates and uncured compounds by thermogravimetry - Butadiene, ethylene-propylene copolymer and terpolymer, isobutene-isoprene, isoprene and styrene-butadiene rubbers

Standard No.

BS ISO 9924-1:2000

Release Date

2001

Published By

British Standards Institution (BSI)

Status

Be replaced 2016-07

Replace By

BS ISO 9924-1:2016

BS ISO 9924-1:2001

Latest

BS ISO 9924-1:2023

Scope

1 This part of ISO 9924 specifies a thermogravimetric method for the determination of the total organic content, carbon black content and ash in vulcanizates and uncured compounds. The loss in mass at 300 ℃ is an approximate guide to the volatile-matter content of the compound. 2 The method is suitable for the analysis of rubber compounds and vulcanizates containing the following rubbers occurring alone or as mixtures: a) polyisoprene of natural or synthetic origin; b) polybutadiene; c) styrene-butadiene copolymers; d) isobutylene-isoprene copolymers; e) ethylene-propylene copolymers and related terpolymers. NOTE The field of application of the method may be extended to the analysis of compounds containing rubbers different from those given in this subclause, provided that the applicability of the method is tested beforehand using known compounds or vulcanizates having a similar composition. Other compounds are covered in ISO 9924-2. 3 The method is not suitable for rubbers containing polymers which form a carbonaceous residue during pyrolysis, such as many chlorine- or nitrogen-containing rubbers. 4 The method is also not suitable for materials containing additives which cause the formation of carbonaceous residues during pyrolysis, such as cobalt and lead salts or phenolic resins. 5 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 ℃ to 650 ℃, unless suitable corrections based on prior knowledge of filler behaviour can be made. 6 The method is not suitable for the determination of the total polymer content of compounds or vulcanizates containing non-rubber organic ingredients that cannot be completely removed by solvent extraction carried out in accordance with ISO 1407.

BS ISO 9924-1:2000 history

• 2023 BS ISO 9924-1:2023 Rubber and rubber products. Determination of the composition of vulcanizates and uncured compounds by thermogravimetry. Butadiene, ethylene-propylene copolymer and terpolymer, isobutene-isoprene, isoprene and styrene-butadiene rubbers
• 2016 BS ISO 9924-1:2016 Rubber and rubber products. Determination of the composition of vulcanizates and uncured compounds by thermogravimetry. Butadiene, ethylene-propylene copolymer and terpolymer, isobutene-isoprene, isoprene and styrene-butadiene rubbers
• 2001 BS ISO 9924-1:2000 Rubber and rubber products - Determination of the composition of vulcanizates and uncured compounds by thermogravimetry - Butadiene, ethylene-propylene copolymer and terpolymer, isobutene-isoprene, isoprene and styrene-butadiene rubbers