Solid epoxy resin systems for automated composite manufacturing
نویسندگان
چکیده
Abstract Thermosetting resins were formulated by mixing solid epoxy components, hardener and accelerator at elevated temperature. These mixtures ground into uncured, resin powders dispensed onto carbon fibres using a powder printer prior to vacuum curing. Using accelerators reduced curing time from 8 h 16 min. Manufactured cross-ply fibre laminates (0°/90°/0°) had comparable mechanical properties composites manufactured liquid system. Tack behaviour of formulations was investigated results compared conventional Master curves the storage loss moduli both generated applying time-temperature superposition shear between 1 100 rad/s multiple temperatures. This approach used determine optimum processing parameters enable tack for automated placement, demonstrating importance temperature control with respect deposition rates.
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ژورنال
عنوان ژورنال: Composites Part A-applied Science and Manufacturing
سال: 2021
ISSN: ['1359-835X', '1878-5840']
DOI: https://doi.org/10.1016/j.compositesa.2020.106205