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Status : Withdrawn
Standard Type : Main
Document No :
Document Year : 2008
Pages : 10
Edition : 1
Section Volume : Composites and reinforcement fibres (ISO/TC 61/SC 13.)
Method A specifies three different resin removal procedures for the determination of the mass of fibre in the composite (viz a combustion procedure, a procedure by digestion in nitric acid and a procedure by digestion in a mixture of sulfuric acid and hydrogen peroxide). The selection of the procedure to be used is made by considering the combustibility of the resin used in the composite, its ability to decompose and the type of resin concerned. It should be noted that method A is only of limited applicability when filled resins are present that could prevent complete dissolution and/or combustibility of the resin.
Method B (thickness measurement method) is only applicable to laminates moulded from prepregs of known fibre mass per unit area.