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ISO 15040:1999
Composites -- Prepregs -- Determination of gel time
This International Standard specifies a method for the determination of the gel time of prepregs made of continuous reinforcement impregnated with epoxy and/or unsaturated-polyester resin.
The method is applicable to most prepregs with a width in the range 300 mm to 1000 mm.
It is not suitable for very narrow prepregs (for example narrow tape), nor for prepregs with a low resin content.
International Organization for Standardization [iso]