Abdalla Soliman, Al-Marzouki Fahad, Obaid Abdullah, Gamal Salah
Department of Physics, Faculty of Science, King Abdulaziz University Jeddah, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Department of physical chemistry, Faculty of Science, King Abdulaziz University Jeddah, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Materials (Basel). 2016 Feb 6;9(2):104. doi: 10.3390/ma9020104.
Nano-composite films have been the subject of extensive work for developing the energy-storage efficiency of electrostatic capacitors. Factors such as polymer purity, nanoparticle size, and film morphology drastically affect the electrostatic efficiency of the dielectric material that forms the insulating film between the conductive electrodes of a capacitor. This in turn affects the energy storage performance of the capacitor. In the present work, we have studied the dielectric properties of four highly pure amorphous polymer films: polymethyl methacrylate (PMMA), polystyrene, polyimide and poly-4-vinylpyridine. Comparison between the dielectric properties of these polymers has revealed that the higher breakdown performance is a character of polyimide (PI) and PMMA. Also, our experimental data shows that adding colloidal silica to PMMA and PI leads to a net decrease in the dielectric properties compared to the pure polymer.
纳米复合薄膜一直是开发静电电容器储能效率的广泛研究对象。聚合物纯度、纳米颗粒尺寸和薄膜形态等因素会极大地影响构成电容器导电电极之间绝缘薄膜的介电材料的静电效率。这反过来又会影响电容器的储能性能。在本工作中，我们研究了四种高纯度非晶态聚合物薄膜的介电性能：聚甲基丙烯酸甲酯（PMMA）、聚苯乙烯、聚酰亚胺和聚4-乙烯基吡啶。这些聚合物介电性能的比较表明，较高的击穿性能是聚酰亚胺（PI）和PMMA的特性。此外，我们的实验数据表明，与纯聚合物相比，向PMMA和PI中添加胶体二氧化硅会导致介电性能净下降。
