Journal
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
Volume 25, Issue 5, Pages 503-512Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684406058290
Keywords
microwave cure; thermal cure; glass-epoxy composite; glass transition temperature (T-g); mechanical properties
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An investigation into the mechanical behavior of microwave-cured glass-epoxy composites is carried out and the results are compared with those of thermally cured composites. Microwave curing of a glass fiber reinforced bifunctional epoxy resin system (LY556/HY951) is carried out in custom-built, multi-mode, industrial microwave cure equipment operating at a frequency of 2450 MHz. Through tensile, compression, and flexural strength tests, it is demonstrated that while the mechanical properties of microwave-cured composites compare well with those of the thermally cured ones, the microwave curing process, per se, results in a significant reduction in the process cycle time and power consumption.
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