摘要
研究了"离位"增韧的双马来酰亚胺复合材料层压板的Ⅰ型和Ⅱ型层间断裂韧性、层间微结构及其形貌变化、冲击分层损伤和冲击后压缩强度,以及典型面内、面外的基本力学性能.结果表明,通过热反应失稳分相、相反转和颗粒粗化等一系列过程,"离位"增韧在复合材料的层间形成了热塑性树脂/热固性树脂双连续的3-3相结构,这种结构大大提高了复合材料层压板的层间韧性、冲击损伤阻抗和损伤容限等性能.
The interlaminar toughness like GⅠC and GⅡC of BMI based composite laminates Exsitu toughened was studied as well as the interlaminar microstructure and morphology, impact damage resistance, compression strength after impact, and the typical in-plan and out-plan mechanical properties. Based on the Ex-situ toughening concept, it is found that a thermoplastic/thermosetting co-continuous phase is formed by the reaction-induced spinodal phase separation, followed by phase inversion and coarsening in the interlaminar region of composite laminate, which dramatically improves the interlaminar fracture toughness, impact damage resistance and compression strength after impact.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2008年第4期337-346,共10页
Chinese Journal of Materials Research
基金
国家重大基础研究发展计划项目(2003CB615604)
国家自然科学基金重大项目(10590356)
国家高技术研究发展计划项目(2007AA03Z541)
中国航空工业第一集团公司创新基金项目资助~~
关键词
复合材料
双马来酰亚胺
断裂韧性
相形貌
冲击损伤
力学性能
composites, bismaleimide, interlaminar toughness, phase morphology, impact damage,mechanical properties
