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尼龙66/SiO_2纳米复合材料的界面结构及其对材料力学性能的影响 被引量:7

The Interface Structure of PA66/SiO_2 Nanocomposites and Its Effect on Mechanical Properties
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摘要 采用熔融共混的方法在双螺杆挤出机上制备出尼龙66/SiO2纳米复合材料,并利用红外光谱(FT-IR)、X射线光电子能谱(XPS)以及透射电子显微镜(TEM)对尼龙66/SiO2的界面进行了分析,结果发现,在熔融共混过程中经过表面改性的SiO2能够和尼龙66基体发生相互作用,形成一种基于共价键和氢键连接的界面层结构。力学性能测试结果表明这种界面结构的形成有利于纳米复合材料拉伸强度的提高。但对材料缺口冲击强度的影响并不明显。 The PA66-based nanocomposites containing a reactable nano-SiO2 were prepared by melt compounding in a twin-screw extruder. The interface structure formed in composite system was investigated by Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The results indicate that the reactable nano-silica particles can interreact with PA66 matrix during melt blending and form the interface structure based on covalent bonding and hydrogen bonding. The result of mechanical testing reveals that the formation of the interface structure helps to improve the tensile strength of nanocomposites, but has a little influence on the material toughness.
出处 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2009年第2期41-44,共4页 Polymer Materials Science & Engineering
基金 国家高技术研究发展计划(863)资助项目(2002AA302607) 河南大学自然科学基础研究项目(06YBZR049)
关键词 尼龙66 纳米SIO2 界面结构 力学性能 PA66 nano-SiO2 interface structure mechanical properties
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