NEN-ISO 5478:1992 en

Rubber - Bepaling van het styreengehalte - Nitratiemethode

  • Deze norm is ingetrokken sinds 26-10-2006


Over deze norm

Status Ingetrokken
Aantal pagina's 4
Commissie Rubber
Gepubliceerd op 01-05-1992
Taal Engels
This standard specifies a method for the determination of the styrene content of all types of styrene-butadiene rubber (SBR), including oil-extended types. The method is applicable to styrene-butadiene rubbers reinforced with styrene homopolymer, to give the total styrene content. The method is also applicable for determining the styrene in block copolymers containing up to 50% (m/m) of styrene. It is applicable to vulcanizates of mixtures of SBR with other polymers (NR, BR, IR and CR) and is considered a method for estimating the SBR content of mixtures, if the styrene content of the SBR is known and provided that no other styrene-containing materials are present. Any other non-extractable aromatic material which absorbs in the specified spectral region will interfere with this method. The procedure may give low results when the content of mineral fillers insoluble in nitric acid exceeds 5% (m/m).


ICS-code 83.060
Nederlandse titel Rubber - Bepaling van het styreengehalte - Nitratiemethode
Engelse titel Rubber - Determination of styrene content - Nitration method
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