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Pressure/temperature measurements during compression molding of glass mat reinforced thermoplastic composites
Author(s) -
Giles Harold F.
Publication year - 1995
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.730010312.n
Subject(s) - materials science , composite material , compression molding , compression (physics) , molding (decorative) , polypropylene , thermoplastic , viscosity , thermoplastic composites , pressing , mold
Cavity pressure transducer measurements are used to determine the effective viscosity of glass reinforced polypropylene composites during compression molding. Part solidification time during the cycle is determined from changes in pressure profiles at different locations in the tool. Higher pressing speeds and part thickness lead to significantly lower effective material viscosity during the compression cycle.