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Fibre-reinforced plastics - Thermosetting moulding compounds and prepregs - Determination of cure characteristics
This International Standard specifies two methods for the determination of the cure characteristics of fibre-reinforced thermosetting moulding compounds and prepregs.
The characteristics measured are:
The methods specified are applicable to all compounds comprising thermosetting matrices reinforced with fibres. The major field of application is compounds based on unsaturated polyester resins.
Method I describes a test method to determine the reactivity of a thermosetting compound by a simple procedure. This method examines only the reactive behaviour of the matrix and its state of stabilization (one factor affecting the shelf life of the moulding compound).
Method II describes a test method which needs more sophisticated equipment, takes more time but provides additional detailed information about the physical behaviour of the compound under simulated practical moulding conditions. It produces a plate which can be used for further testing to determine properties of the moulded article.
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