期刊
COMPOSITE STRUCTURES
卷 213, 期 -, 页码 261-270出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2019.01.069
关键词
Benzoxazine; Elevated-temperature properties; Carbon fibres; Mechanical testing; Out-of-autoclave processing
资金
- Enterprise Ireland [CF/2010/IComp2010-01]
Benzoxazine's have recently emerged as new candidate resins for elevated temperature structural applications in the aerospace sector offering attractive attributes including infusibility under vacuum, fire-smoke-toxicity performance and room temperature storage/transport. The main objective of this study is to evaluate the hydrothermal in-plane-shear (IPS) strength of carbon-fibre (CF) based laminates manufactured using two benzoxazine (BZ) resin systems (BZ9120 and BZ9130). CF/BZ9130 was evaluated at 160 degrees C in the wet condition and benchmarked against two commercially available bismaleimide (BMI) resin systems - traditionally considered for wet applications at 160 degrees C. CF/BZ9120 was evaluated at 120 degrees C (just below its Tg) in the dry and wet condition and benchmarked against CF/BZ9130. BMI's remain the benchmark for IPS strength at 160 degrees C (wet) with 64% retention while BZ9130 only retained 48% of IPS strength at 160 degrees C (wet) and also exhibited excessive elongation. CF/BZ9130 showed good retention at 120 degrees C (68% wet) outperforming CF/BZ9120 (48% wet). Positively, both BZ systems performed at least as well as the BMI's under ambient conditions.
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