摘要
采用硅烷偶联剂(KH-550)对纳米氧化锌进行了表面改性,通过熔融共混法制备了聚丁二酸丁二醇酯(PBS)/纳米氧化锌复合材料,利用扫描电子显微镜、热重分析仪、差示扫描量热仪等对复合材料的力学性能、热性能和非等温结晶性能进行了研究分析,并通过Ozawa-Flynn-Wall方法分析了复合材料的热降解行为。结果表明,纳米氧化锌能提高PBS的拉伸强度和弯曲强度,但降低了其冲击强度;改性后的纳米氧化锌可以提高其与PBS的界面相容性,并提高其在PBS基体中的分散性能,不同程度地提高了复合材料的力学性能;纳米氧化锌提高了PBS的结晶速率,降低了其热解反应活化能。
Nano-ZnO was surface modified with KH-550, with which poly （butylene succinate） （PBS）/nano-ZnO composites were prepared via melt blending. The mechanical, thermal, and non- isothermal crystallization behavior of the composites were studied using SEM, TG, and DSC, respectively. The thermal degradation behavior was analyzed using Ozawa-Flynn-Wall method. It showed that the tensile and flexural strengths of PBS/nano-ZnO composites increased with adding nano-ZnO, but impact strength decreased. Surface modification could improve the interracial compatibility between nano-ZnO and PBS matrix and the dispersion of nano-ZnO in PBS matrix. Thus the mechanical properties of the composites were enhanced. The crystallization rate of PBS was increased when nano-ZnO was added, and the thermal degradation activation energy was decreased.
出处
《中国塑料》
CAS
CSCD
北大核心
2012年第4期86-91,共6页
China Plastics
基金
东北林业大学研究生科技创新项目(GRAM09)
