Journal
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
Volume 28, Issue 16, Pages 1987-1997Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684408090715
Keywords
glass-epoxy composite; pre-pregs; storage period; glass transition temperature
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Funding
- Council of Scientific and Industrial Research (CSIR), New Delhi
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Studies were carried out on the storage life of Room Temperature (RT)-curable pre-pregs comprising of two varieties of bi-functional epoxy resins (imported resin system and an equivalent grade of indigenous resin system) as matrices and bi-directional glass fabric as reinforcement. The hand-made pre-pregs were stored at sub-ambient temperature (-18 degrees C). The resin flow of pre-preg was determined as a function of storage period. Composite laminates were vacuum molded using the pre-pregs taken out of the deep freezer. The composite specimens were characterized for their thermal (T-g) as well as mechanical properties. The properties obtained were compared with the properties of wet layed-up composites fabricated without the usage of pre-impregnated plies.
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