摘要
通过静电纺丝的方法制备了单轴取向的聚酰亚胺(PI)纳米纤维膜,并且采用不同环化温度的纳米纤维膜与聚酰亚胺基体进行复合,制备了一种PI纳米纤维增强PI复合薄膜。通过扫描电子显微镜(SEM)研究了纳米纤维的取向情况,以及纳米纤维膜与其基体的界面粘接情况;采用红外光谱对不同热处理温度PI纳米纤维膜的亚胺化程度进行了表征;并对复合薄膜的力学性能进行了表征。结果表明:通过提高滚筒转速可以得到高度取向结构的纳米纤维膜;纳米纤维膜的环化程度随热处理温度升高而提高;纳米纤维的亚胺化程度越低,其与基体之间的界面粘接性越好,复合薄膜的力学性能越佳。
Highly oriented polyimide （PI）nanofibers were prepared via electrospinning and its homogenous composite films were fabricated using the membranes with different cyclization temperature as reinforcing fibers. The orientation of the nanofiber and the interracial adhesion between nanofiber and matrix were studied by scanning electron microscopy （SEM）. And the relationship between the thermal cyclization temperature and the degree of was investigated by infrared spectroscopy （IR）. The mechanical properties of the composites were also characterized by the universal testing machine. The results show that the orientation degree of the nano-fiber can be improved by the increasing of the drum speed and the degree of imidization is increased by the raising of cyclization temperature. Besides,it can also be found that the interracial properties between nanofiber and the matrix and the mechanical properties of the homogenous composites can be enhanced with a lower degree of imidization.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第5期59-61,共3页
New Chemical Materials
