Preparation of BaTiO3 Nanoparticles with Various Particle Sizes and Ferroelectic and Dielectric Properties of 0-3 Type BaTiO3/PVDF Piezoelectric Composite Materials
铁电材料作为一种应用广泛的功能材料，一直以来都受到广泛的关注。随着科技的发展，对铁电组件小型化、集成化的要求越来越高，这就进一步要求作为原料的铁电体晶粒尺寸不断减小。当晶粒尺寸减小时，铁电体的铁电性是否还能保持是一个重要的问题，对这种尺寸效应的研究具有重要的意义。由于钛酸钡(BaTiO3)晶体结构简单并具有高介电常数，在理论上和实践方面研究BaTiO3的的临界尺寸很有意义。本论文采用BaTiO3作为增强材料，压电聚合物聚偏二氟乙烯(PVDF)作为基体，用制备压电复合材料的方法研究钛酸钡纳米颗粒的尺寸效应。压电聚合物基压电复合材料兼具压电陶瓷和聚合物的优点，而且还可以表现出复合材料的新性能，所以...Ferroelectric materials, which are widely used as functional matrials, have been extensively investigated recently for device applications. However, ferroelectric devies should be miniaturized and integrated with the development of nanotechnology, nanoparticles then should be handled and utilized. Whether the ferroelectricity still maitain when the grain size decreases, is the biggest obstacle in ...学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：2052006115197
