EN ISO 1172:2023

This document specifies two calcination methods for the determination of the textile glass and mineral filler content of glass-reinforced plastics:— MethodA: for the determination of the textile glass content when no mineral fillers are present.— MethodB: for the determination of the textile-glass and mineral-filler content when both components are present.This document is applicable to the following types of material:— prepregs made from yarns, rovings, tapes or fabrics;— SMC, BMC and DMC moulding compounds;— textile-glass-reinforced thermoplastic moulding materials and granules;— filled or unfilled textile-glass laminates made with thermosetting or thermoplastic resins.The methods do not apply to the following types of reinforced plastic:— those containing reinforcements other than textile glass;— those containing materials which do not completely burn off at the test temperature (for example, those based on silicone resin);— those containing mineral fillers which degrade at temperatures below the minimum calcination temperature.