摘要
采用国产CCF800H高强中模碳纤维增强环氧制备了复合材料,研究不同热塑性树脂含量对复合材料张开(Ⅰ)型层间断裂韧度的影响,研究表明:随着热塑组分含量的提高,复合材料的裂纹起始应变能量释放率(GⅠC-init)与裂纹稳态扩展应变能量释放率(GⅠC-prop)都获得了大幅度提升,在增韧组分质量分数大于20%时,增韧聚芳醚酰亚胺粉体可在复合材料层间富集形成层间高韧区,并在复合材料层间形成了由"连续相"和"分散相"组成的层间增韧结构。
The toughened composite was prepared by the domestic high strength medium modulus car-bon fiber （CCF800H） reinforced epoxy resin matrix. The influence of different content of toughening thermoplastic within epoxies on the mode- I interlaminar fracture toughness （G IC） of composites was investigated. The results show the initial strain energy release rate （GIC_init） and the propagational strain energy release rate （GIC-Prop） of composites improve remarkably with the increasing of content of toughening thermoplastics within epoxy matrix. In the case of mass fraction of thermoplastic is grea-ter than 20% of epoxy, the toughening aromatic polyetherimide particle can be concentrated on the in-terlayer of composite to form the high interlaminar toughness zone. The interlaminar toughened struc-ture constituted by Continuous phase？ and 4 dispersion phase？ is fabricated on the interlayer of com-posite.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2017年第8期55-61,共7页
Journal of Materials Engineering
关键词
碳纤维
热塑性树脂
环氧
Ⅰ型层间断裂韧度
carbon fiber
thermoplastic
epoxy
mode-I interlaminar fracture toughness
