Norm

NEN-ISO 247-1:2018 en

Rubber - Bepaling van het asgehalte - Deel 1: Verbrandingsmethode

58,24 63,48 Incl BTW

Over deze norm

Status Definitief
Aantal pagina's 7
Commissie Rubber
Gepubliceerd op 01-08-2018
Taal Engels
NEN-ISO 247-1 specifies three methods for the determination of ash from raw rubbers, compounded rubbers and vulcanizates. The methods are applicable to raw, compounded or vulcanized rubbers of the M, N, O, R and U families described in ISO 1629, except that: - Method A is not used for the determination of ash from compounded or vulcanized rubbers containing chlorine, bromine or iodine; - Method B is used for compounded or vulcanized rubbers containing chlorine, bromine or iodine. It shall not be used for uncompounded rubbers; - Method C is intended to be used for the determination of ash from raw, compounded or vulcanized rubber not containing chlorine, bromine or iodine by wrapping the test portion in ashless filter paper; - Lithium and fluorine compounds might react with silica crucibles to form volatile compounds, giving low ash results. Platinum crucibles shall therefore be used for ashing fluorine-containing and lithium-polymerized rubbers. This document does not cover the interpretation of the ash results as to the inorganic chemical content of a compound or vulcanizate. This is the responsibility of the analyst, who has to be aware of the behaviour of rubber additives at elevated temperatures.

Details

ICS-code 83.060
Nederlandse titel Rubber - Bepaling van het asgehalte - Deel 1: Verbrandingsmethode
Engelse titel Rubber - Determination of ash - Part 1: Combustion method
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