Influence of interphase morphology on adhesion and composite durability in semicrystalline polymer matrix composites
Conference
·
OSTI ID:441486
- Virginia Tech, Blacksburg, VA (United States)
The microstructure of the interphase in semicrystalline polymer matrix composites has a dramatic influence on their mechanical properties. Studies have been performed to alter this region and to correlate various interphase morphologies with changes in fiber-matrix adhesion. A reinforced nylon 66 composite, when subjected to specific thermal histories, contains an interphase composed of transcrystallinity. This region has been altered by coating fibers with a diluent, poly(vinyl pyrrolidone), and/or adding the diluent to the matrix material in very small quantities. Interphase morphology was investigated with optical microscopy, and adhesion was measured using a modified fiber pull-out test. It was found that transcrystallinity increases the interfacial shear strength. The effect different interphase morphologies have on the durability of bulk composite samples is currently under investigation.
- OSTI ID:
- 441486
- Report Number(s):
- CONF-960214--
- Country of Publication:
- United States
- Language:
- English
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