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BSI 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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BSI BS ISO 248-2:2019

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

PUBLISH DATE 2019
PAGES 16
BSI BS ISO 248-2:2019

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 ISO 1629 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 ISO 1795.

1.4

The hot-mill method and the oven method specified in ISO 248‑1 and the methods specified in this document might not give identical results. In cases of dispute, therefore, the oven method, procedure A, specified in ISO 248‑1:2011, 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.

SDO BSI: British Standards Institution
Document Number ISO 248-2
Publication Date March 27, 2019
Language en - English
Page Count 16
Revision Level
Supercedes
Committee PRI/22
Publish Date Document Id Type View
March 27, 2019 BS ISO 248-2:2019 Revision
Aug. 31, 2012 BS ISO 248-2:2012 Revision