This part of ISO 3451 specifies methods for determination of the ash of polyamides, both filled and unfilled. The general procedures given in ISO 3451-1 are followed. For unfilled materials method A or method ? of ISO 3451-1:1997 is used. For filled and glass-fibre reinforced materials method A of ISO 3451-1:1997 is used. For glass-fibre filled materials containing flame retardant, antimony trioxide, and/or other, volatilizable, additives such as pigment zinc sulfide, a modification is incorporated to remove these as volatile bromine component(s).
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Sisällysluettelo
Foreword
1 Scope
2 Normative reference
3 Principle
3.1 Unfilled materials
3.2 Filled and glass-fibre reinforced materials
3.3 Flame-retardant materials reinforced with glass fibre
4 Reagents (method С or method A in the presence of DBB)
5 Apparatus
6 Procedure
6.1 Test portion
6.2 Unfilled materials
6.3 Filled and glass-fibre reinforced materials
6.4 Materials reinforced with glass fibre containing flame-retardant antimony trioxide and/or other volatilizable additives