摘要
以碳纳米管(CNTs)为增强材料,采用熔融共混法制备了CNTs增强聚丙烯(PP)复合材料。研究了CNTs用量对该PP/CNTs复合材料结晶性能和力学性能的影响。结果表明:CNTs的添加对PP基体有明显的异相成核作用,提高了PP的熔融温度和相对结晶度。随着CNTs用量的增加,PP/CNTs复合材料的断裂强度和屈服强度明显改善,但过量CNTs的添加将使复合材料的力学性能呈下降趋势;另外随着CNTs用量的增加,该复合材料的断裂伸长率和断裂功不断减小。
Polypropylene（PP） composites reinforced with carbon nano-tubes（CNTs） were prepared by melt blending method. The effects of the addition of CNTs on crystallization behavior and mechanical properties of the PP/CNTs composites were studied. The results show that CNTs play a role of heterogeneous nucleating agent in PP matrix, and causing higher relative crystallinity and melting temperatures of PP. The break strength and yield strength of the PP/CNTs composites improve significantly with the increasing content of CNTs, but the mechanical properties turn to a decreasing tendency with the further addition of CNTs. Furthermore, the elongation at break and fracture work of the PP/CNTs composites decrease with the addition of CNTs.
出处
《塑料科技》
CAS
北大核心
2015年第7期52-55,共4页
Plastics Science and Technology
基金
河南工程学院功能纺织高分子材料科技创新团队(CXTD2013004)
河南工程学院博士基金项目(D2012029)
河南省教育厅科技攻关项目(14B150004)
郑州市重点科技攻关项目(郑州市科技局121PPTGG357-1)
关键词
聚丙烯
碳纳米管
结晶性能
力学性能
Polypropylene
Carbon nano-tubes
Crystallinity
Mechanical properties
