| 表面改性对聚丙烯/纳米氢氧化镁复合材料性能的影响 |
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| 引用本文： | 陈晓浪,于杰,郭少云,曹新鑫,薛涛,胡智. 表面改性对聚丙烯/纳米氢氧化镁复合材料性能的影响[J]. 高分子材料科学与工程, 2006, 22(5): 170-174 |
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| 作者姓名： | 陈晓浪 于杰 郭少云 曹新鑫 薛涛 胡智 |
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| 作者单位： | 高分子材料工程国家重点实验室,四川大学高分子研究所,四川,成都,610065;国家复合改性聚合物材料工程技术中心,贵州省材料技术创新基地,贵州,贵阳,550014;河南理工大学材料科学与工程学院,河南,焦作,454000 |
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| 基金项目： | 国家863计划项目(2003AA32X230)，国家重点基础研究发展计划(973)项目(2005CB623800)资助 |
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| 摘 要： | 研究了表面处理剂(钛酸酯和硅烷偶联剂)对聚丙烯/纳米氢氧化镁(MH)阻燃复合材料性能的影响。通过高压毛细管流变仪、LO I、力学测试、DSC和SEM对PP/纳米MH复合体系的结构与性能进行了研究。结果表明,所选偶联剂能有效地降低复合体系的表观黏度,改善体系的流动性。未改性的纳米MH对PP基体有异相成核作用;而表面改性剂能削弱填料对基体的异相成核作用。改性后的纳米MH粒子以独立形式均匀分散在基体中,PP与纳米MH界面的粘接力得到了加强,复合材料的拉伸性能和冲击强度有较大幅度的提高,阻燃性能也得到了改善。
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| 关 键 词： | 聚丙烯 纳米氢氧化镁 表面处理 力学性能 流变性 结晶 |
| 文章编号： | 1000-7555（2006）05-0170-05 |
| 收稿时间： | 2005-12-09 |
| 修稿时间： | 2006-01-20 |
Effect of Surface Modification on Properties of PP Filled with Nano-Mg(OH)2 Composites |
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| CHEN Xiao-lang,YU Jie,GUO Shao-yun,CAO Xin-xin,XUE Tao,HU Zhi. Effect of Surface Modification on Properties of PP Filled with Nano-Mg(OH)2 Composites[J]. Polymer Materials Science & Engineering, 2006, 22(5): 170-174 |
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| Authors: | CHEN Xiao-lang YU Jie GUO Shao-yun CAO Xin-xin XUE Tao HU Zhi |
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| Affiliation: | 1. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China; 2. National Engineering Research Center for Compounding and Modification of Polymeric Materials, Materials Engineering and Technology Innovation Center of Guizhou, Guiyang 550014, China ; 3. College of Materials Science andEngineering , Henan Polytechnic University, Jiaozuo 454000, China |
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| Abstract: | Nano-magnesium hydroxide(MH),which was modified by titanate and silane,respectively,was filled into polypropylene as a fire retardant.The effects of surface treatment on the structure and the properties of PP/MH composites were studied by rheological behaviors,mechanical tests,LOI,DSC and morphology studies.The results show that addition of nano-MH can improve flame retardancy of PP/MH composites,but deteriorate mechanical properties of composites.However,PP matrix filled with treated nano-MH can improve significantly tensile and impact strength of PP/MH composites and has little effect on flame retardancy and elongation at break of the composites.PP filled with treated nano-MH powders decreases melt viscosity of PP/MH composites,which improves their processing behavior.Nano-MH has heterogeneous nucleation on PP matrix and makes crystallization peak temperature increased.However,surface modifier can weaken heterogeneous nucleation of MH on PP/MH composites.Interfacial adhesion of PP/MH composites is significantly improved,as seen in morphology studies in the changed fracture mechanism.[KH 1mmD] |
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| Keywords: | polypropylene nano-Mg(OH)_2 surface treatment mechanical properties rheology crystallization |
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