1 Scope
This part of GB/T 9345 specifies methods for determination of the ash of polyamides, both filled and unfilled.
The general procedures given in GB/T 9345.1-2008 are followed. For unfilled materials method A or method C of GB/T 9345.1-2008 is used. For filled and glass-fibre reinforced materials method A of GB/T 9345.1-2008 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).
2 Normative Reference
The following standard contains provisions which, through reference in this text, constitute provisions of this part of GB/T 9345. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 9345.1-2008 Plastics—Determination of Ash—Part 1: General Methods
(ISO 3451-1:1997, IDT)
3 Principle
3.1 Unfilled materials
Contents
Foreword i
1 Scope
2 Normative Reference
3 Principle
4 Reagents (Method C or Method A in the Presence of DBB)
5 Apparatus
6 Procedure
7 Expression of Results
8 Precision
9 Test Report
