摘要
报道了一种简单有效的增强热塑性塑料聚芳醚腈（PEN）力学性能的方法。该方法通过使用碳纤维（CF）和石墨烯微片（GN）实现多元多尺寸协同增强，通过熔融共混挤出造粒，得到力学性能优异的PEN／CF／GN复合材料。与PEN树脂、PEN／GN（5％）和PEN／CF（20％）复合材料相比，PEN／CF（20％）／GN（5％）复合材料的冲击强度分别增加了98．4％、63．6％、29．4％，其弯曲模量达到18．6GPa，分别增加了1．7、4．5、6．4倍。扫描电镜照片显示，微米尺寸CF和纳米填料GN的同时加入减少了基体富集区域和自由体积，增强了界面作用力，能够减少应力集中和帮助应力转移。同时加入CF和GN到聚合物系统中形成聚合物／微米／纳米体系，不仅具有显著的协同增强效应，能为材料设计提供参考，而且采用熔融注塑成型工艺，具有工业化生产前景。
An easy and efficient approach multi-scale carbon fiber （CF） and graphene to the development of advanced thermoplastic composites based on nanoplatelet （GN） reinforcement. Poly （ arylene ether nitrile ） （PEN） composites, prepared by the twin-screw extrusion, exhibited excellent mechanical properties. For example, the flexural modulus of PEN/CF/GN composites was 18.6 GPa, which was 1.7, 4.5 and 6. 4 times larger than those of PEN/CF composites, PEN/GN composites and PEN host, respectively. Based on the SEM image observation, such mechanical enhancements can be attributed to the synergetic effect of micro- scale CF and nano-scale GN in the PEN matrix （decreased matrix-rich and free-volume regions and enhanced interfacial interactions）. This study had demonstrated that multi-scale CF and GN had an obvious synergetic reinforcing effect on the mechanical properties and thermal stabilities of thermoplastic composites, which provided an easy and effective way to design and improve the properties of composite materials.
出处
《塑料工业》
CAS
CSCD
北大核心
2013年第S01期109-113,共5页
China Plastics Industry
关键词
聚芳醚腈
碳纤维
石墨烯微片
力学性能
协同增强
PEN
Carbon Fiber
Graphene Nanoplatelet
Mechanical Properties
Synergetic Reinforcement
