摘要
通过静电吸附方法在玻璃纤维(GF)表面吸附粘土和成核剂,将改性玻璃纤维增强体与聚酰胺66(PA66)熔融共混制备高性能复合材料。通过扫描电子显微镜观察了粘土和成核剂在玻璃纤维表面的分散状态以及玻璃纤维与基体的界面连接。结果表明,在玻璃纤维表面静电吸附粘土和成核剂,不仅有助于粘土的分散,而且可以提高玻璃纤维与基体的界面连接。玻璃纤维表面吸附的粘土和成核剂可以诱导PA66分子链在纤维表面结晶,提高复合材料的力学性能。因此,与传统PA66/GF复合材料相比,在GF表面吸附少量的粘土(0.18wt%)和成核剂(0.07wt%)可以使复合材料的拉伸和弯曲模量分别提高12.2%和12.8%。
Negative charged organic clay and nucleating agent （P22） were absorbed on glass fiber （GF） surfaces simultaneously by electrostatic assembly approach, and then the modified GF was melt compounded with polyamide 66 （PA66） via a twin-screw extruder. The surface morphologies of GF-clay and GF-clay-P22 reinforcements were examined by scanning electron microscopy （SEM）. The absorption of clay and P22 on GF surfaces not only assists the dispersion of clay, but also enhances the interfacial adhesion between fibers and polymer matrices. Meanwhile, the presence of clay and nucleating agents on GF surfaces can induce the crystallization of PA66 molecules chain on the surfaces of GF. As a result, a very low absorption of clay （0. 18wt%） and nucleating agents （0.07wt%） on GF surfaces enhance the tensile modulus and flexural modulus by 12.2% and 12.8% respectively comparing with PA66/GF composite, which shows a promising route to realize the full potential of fillers to reinforce the mechanical performance of PA66 composites.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2016年第2期173-180,325,共9页
Journal of Materials Science and Engineering
基金
supported by the National Natural Science Foundation of China(51173043
21136006
21236003
21322607)
the Special Projects for Nanotechnology of Shanghai(12nm0502700)
the Basic Research Program of Shanghai(13JC1408100)
the Key Scientific and Technological Program of Shanghai(14521100800)
the Fundamental Research Funds for the Central Universities
关键词
静电吸附
玻璃纤维
粘土
成核剂
界面连接
electrostatic assembly
glass fiber
clay
nucleating agent
interracial adhesion
