Rubber, raw. Determination of volatile-matter content Thermogravimetric methods using an automatic analyser with an infrared drying unit

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Hardcopy , PDF

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English

Published date

27-03-2019

Publisher

British Standards Institution

This document specifies two thermogravimetric methods for the determination of moisture and other volatile-matter content in raw rubbers by using an automatic analyser with an infrared drying unit.

1.1

This document specifies two thermogravimetric methods for the determination of moisture and other volatile-matter content in raw rubbers by using an automatic analyser with an infrared drying unit.

1.2

These methods are applicable to the determination of volatile-matter content in synthetic rubbers (SBR, NBR, BR, IR, CR, IIR, halogenated IIR and EPDM) listed in ISO1629 and to various forms of raw rubber, such as bale, block, chip, pellet, crumb, powder and sheet. These methods might also be applicable to other raw rubbers only when the change in mass is proven to be due solely to loss of original volatile matter and not to rubber degradation.

1.3

The methods are not applicable to raw rubbers which need homogenizing as specified in ISO1795.

1.4

The hot-mill method and the oven method specified in ISO248‑1 and the methods specified in this document might not give identical results. In cases of dispute, therefore, the oven method, procedureA, specified in ISO248‑1:2011, is the referee method.

NOTE These methods can be useful for routine determinations, e.g. quality control, when the measurement conditions for the automatic analyser are fixed for a particular raw rubber or grade of raw rubber.

Committee	PRI/50
DocumentType	Standard
ISBN	9780539004458
Pages	16
PublisherName	British Standards Institution
Status	Current
Supersedes	BS ISO 248-2:2012

Standards	Relationship
ISO 248-2:2019	Identical

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BS ISO 248-2:2019

Rubber, raw. Determination of volatile-matter content Thermogravimetric methods using an automatic analyser with an infrared drying unit

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