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Analysis of volumetric changes of unsaturated polyester resins during curing
Author(s) -
Hill Ronald R.,
Muzumdar Shailesh V.,
Lee L. James
Publication year - 1995
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760351007
Subject(s) - materials science , curing (chemistry) , differential scanning calorimetry , styrene , polyester , shrinkage , unsaturated polyester , composite material , polymerization , electron paramagnetic resonance , volume (thermodynamics) , polymer chemistry , thermodynamics , polymer , copolymer , nuclear magnetic resonance , physics
Two models were proposed to predict the volume changes that occur during the cure of unsaturated polyester resin/styrene systems. These models are able to account for both thermal expansions/contractions and polymerization shrinkage during processing. One model, which is based on coversion, was developed by combining experimental results from differential scanning calorimetry and dilatometry. The second model is based on radical concentration, and was developed using results from electron spin resonance spectroscopy and dilatometry. Predictions obtained from both models were compared with experimental results and reasonable agreement was obtained.