【摘要】 以蒙脱土/十六烷基三甲基溴化铵作为前驱物负载ZieglerNatta催化剂,通过插层原位聚合的方法制备了聚乙烯/蒙脱土纳米复合材料。对聚乙烯/蒙脱土纳米复合材料的制备规律进行了研究。用透射电镜、扫描电镜、XRD,DSC等手段研究了结构和性能的相互关系,以及蒙脱土的含量对复合材料熔点与结晶行为的影响。研究表明:蒙脱土的片层结构被破坏,并以纳米级均匀分散在聚合物基体中。蒙脱土的质量分数为3%左右时,聚乙烯/蒙脱土纳米复合材料具有优良的综合性能。更多还原

【Abstract】 Using the organic montmorillonite/cetyltrimethy ammonium bromide (MMT/CTAB) deposited with ZieglerNatta catalyst as precursor the granular polyethylene/montmorillonite (PE/MMT) nano-composites were prepared by the in situ polymerization method. The microstructure and properties of the nano-composites were investigated by SEM,TEM,XRD and DSC etc and the effects of the content for montmorillonite on the melt point and crystalline behaviors were analyzed. Results show that the structure of montmorillonite is destroyed and the exfoliated nano-montmorillonite slices are dispersed uniformly in the polyethylene matrix. The PE/MMT composites with good properties are obtained when the mass fraction of montmorillonite in the nano-composite materials is about 3%.更多还原