STUDY ON THE PREPARATION AND CURING PROCESS OF OoA PREPREGS

Abstract

Abstract: In this study, Out of Autoclave (OoA) prepregs were prepared by single film impregnation process. Prepreg impregnation levels were measured using three methods. Laminate porosity and mechanical properties were tested to compare the prepregs with various impregnation levels. The preferred impregnation level of 22% was identified to offer the best overall performance for the selected prepreg system. Processing parameters for CFRP manufacturing are crucial in OoA process. Laminates with various processing parameters were evaluated using NDT, porosity, microstructure and mechanical properties. A cure cycle of 2 hours at 120 ℃ was selected as the most suitable key process parameters for the selected prepreg system. Overall thermal and mechanical performance comparison was carried out for the laminates manufactured via OoA and autoclave processes. For the selected OoA prepreg system, the thermal and mechanical performance of the laminates via OoA process are equivalent to those via autoclave process.

Key words: OoA, prepreg impregnation levels, laminate porosity, CFRP, curing process

CLC Number:

TB332

CHEN Shuai-jin, XU Chen, WU Guo-qing, LI Guo-ming. STUDY ON THE PREPARATION AND CURING PROCESS OF OoA PREPREGS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 90-95.

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