Chandrakala, K and Vanaja, A and Rao, RMVGK (2007) SOME PRELIMINARY STUDIES ON THE SHELF LIFE OF RT CURE GLASS-EPOXY PREPREG. Project Report. National Aerospace Laboratories, Bangalore.
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Abstract
Preliminary studies were carried out on the storage life of prepregs made out of bifunctional epoxy resin system (Imported resin system LY5052/HY5052) as matrix and glass fiber as reinforcement and maintained at sub-ambient temperature(-1 S°C). Composite laminates were prepared out of these prepregs at room temperature by using the vacuum bag technique. The thermal (Glass transition temperature, Tg) properties were evaluated and compared with a composite prepared in a conventional way (without the usage of pre impregnated plies) at room temperature employing a similar moulding technique. These studies established the maximum storage period of prepregs to be 20days at -18°C with optimized processing techniques and thermal properties.
| Item Type: | Proj.Doc/Technical Report (Project Report) |
|---|---|
| Uncontrolled Keywords: | Prepregs,Shelflife,DSC,Tg,bifunctional epoxy |
| Subjects: | AERONAUTICS > Aircraft Design, Testing & Performance CHEMISTRY AND MATERIALS > Chemistry and Materials (General) |
| Division/Department: | Fibre Reinforced Plastics Division, Fibre Reinforced Plastics Division, Fibre Reinforced Plastics Division |
| Depositing User: | Mr Nisanth |
| Date Deposited: | 19 Jul 2011 10:09 |
| Last Modified: | 19 Jul 2011 10:09 |
| URI: | http://nal-ir.nal.res.in/id/eprint/9452 |
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