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Norm

ISO 247:1990

Ausgabedatum: 1990 11 08

Rubber — Determination of ash

The two methods are applicable to raw, compounded and vulcanized rubbers of the families described in ISO 1629. The principle of method A consists in heating a weighed te...
ZURÜCKGEZOGEN: 2006 09 14
Herausgeber:
International Organization for Standardization
Format:
Digital | 3 Seiten
Sprache:
Englisch
Aktuell Gültig:

The two methods are applicable to raw, compounded and vulcanized rubbers of the families described in ISO 1629. The principle of method A consists in heating a weighed test portion in a crucible over a gas burner, followed by volatilization of the decomposition products and transfer of the crucible to a muffle furnace. The crucible is heated until all the carbonaceous matter has been burnt off and constant mass is attained. In method B a weighed test portion is heated in a crucible in the presence of sulfuric acid, first by means of a gas burner and then in a muffle furnace as in method A. Platinum crucibles shall be used for ashing fluorine-containing and lithium-polymerized rubbers. Cancels and replaces the second edition ISO 247:1978, which contains three methods of determination.

ISO 247-1:2018
2018 07 26
Rubber — Determination of ash — Part 1: Combustion method
Norm
ISO 247:2006
2006 09 14
Rubber — Determination of ash
Norm
ISO 247:1990
1990 11 08
Rubber — Determination of ash
Norm
ISO 247:1978
1978 05 01
Rubber — Determination of ash
Norm
Historie aufklappen
Norm
ISO 247:2006
Ausgabedatum : 2006 09 14
Rubber — Determination of ash