In situ thermoset molecular composites

The polymerization of rigid rod polymer precursors in a reactive matrix precursor, which is later cured in the mold, constitutes the in situ process. A poly‐azomethine (PAM) was used as the rigid rod molecule. The resin used was an epoxy. We discuss the prediction of mechanical properties using micr...

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Bibliographic Details
Published in:Journal of polymer science. Part B, Polymer physics Polymer physics, 1994-12, Vol.32 (16), p.2555-2565
Main Authors: Wiff, D. R., Lenke, G. M., Fleming III, P. D.
Format: Article
Language:English
Subjects:
Applied sciences
epoxy
Exact sciences and technology
glass/epoxy composite
in situ molecular composites
Mechanical properties
molecular composites
molecular modeling
Organic polymers
Physicochemistry of polymers
poly (azomethine)
Properties and characterization
rigid rod polymer
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Summary:The polymerization of rigid rod polymer precursors in a reactive matrix precursor, which is later cured in the mold, constitutes the in situ process. A poly‐azomethine (PAM) was used as the rigid rod molecule. The resin used was an epoxy. We discuss the prediction of mechanical properties using micromechanics equations for chopped fiber composites. The chemistry used to synthesize the rigid rod polymer PAM in the epoxy precursor is reviewed. Approaches to better control the cure of these epoxy systems through cure kinetics and cure rheology studies completes the thermoset in situ molecular composite process. There was a 71% increase in tensile modulus in comparison to that of the neat epoxy resin. Molecular modeling simulations and continuum mechanics are used to help understand these findings. PAM/epoxy systems were used as a matrix material in the fabrication of unidirectional glass fiber/(PAM/epoxy) structural composites. © 1994 John Wiley & Sons, Inc.
ISSN:0887-6266
1099-0488
DOI:10.1002/polb.1994.090321601