本文關鍵詞：聚合物基半導體納米復合電介質材料的制備與性能研究　出處：《深圳大學》2017年碩士論文　論文類型：學位論文

  更多相關文章： 介電 損耗 聚偏氟乙烯 氧化鋅 硫化鋅 能量密度

【摘要】：電介質材料在微電子、高壓絕緣以及儲能領域具有重要的應用價值,因此得到國內外研究者的廣泛關注。盡管研究者們對電介質材料的介電性能和儲能行為進行了較為深入的研究,也取得了很多突破性的成果,但在聚合物基電介質復合材料領域,還存在很多亟待解決的問題,尤其是高含量下介電損耗過高,擊穿強度急速下降的難題。因此,本論文以探討界面結構對擊穿強度和儲能行為的影響為研究目的,制備了具有優(yōu)異介電和耐電壓性能的電介質聚合物納米復合材料。采用納米半導體顆粒作為復合材料的填料,研究了半導體填料對介電、擊穿、儲能、導熱等性能的影響,并在此基礎之上,設計并制備出高含量下抑制損耗增加及能夠保持較高的擊穿強度的復合材料。首先,為了提高聚合物復合材料的介電和儲能性能,本文選取了納米ZnO和ZnS作為復合材料填料的研究對象,并與具有鐵電性質的聚合物——聚偏氟乙烯(PVDF)進行復合,制備出具有高介電、高儲能的聚合物復合材料。對一系列樣品進行了介電、耐壓絕緣、儲能、導熱、熱穩(wěn)定等性能的測試分析,結果發(fā)現,介電常數隨著填料的增加而增加;低含量下,儲能密度和擊穿強度得到顯著提升,說明ZnS和ZnO在電子封裝、高壓電氣等領域具有潛在的應用。其次,在前述氧化鋅和硫化鋅的研究基礎之上,進一步制備了納米ZnO-ZnS復合顆粒填料,再與聚偏氟乙烯進行復合,得到三相的復合材料。結果表明:隨著填料的含量增加,復合材料的介電損耗得到了有效的抑制,且高含量下?lián)舸⿵姸纫琅f保持較高水平。相比同含量下ZnS和ZnO,三相復合材料的儲能密度和擊穿強度均有顯著提升。
[Abstract]:Dielectric materials have important applications in the fields of microelectronics, high-voltage insulation and energy storage. Therefore, researchers at home and abroad have paid close attention to the dielectric properties and energy storage behavior of dielectric materials, and have made a lot of breakthrough results. However, in the field of polymer based dielectric composites, there are still many problems to be solved, especially the problem of high dielectric loss and rapid decrease of breakdown strength under high content. The purpose of this thesis is to investigate the effect of interface structure on breakdown strength and energy storage behavior. Dielectric polymer nanocomposites with excellent dielectric and voltage resistance properties were prepared. On the basis of the influence of thermal conductivity and other properties, a composite material with high content to restrain loss increase and maintain high breakdown strength was designed and fabricated. In order to improve the dielectric and energy storage properties of polymer composites, nano-sized ZnO and ZnS were selected as the research objects of composite fillers in this paper. A series of polymer composites with high dielectric and high storage energy were prepared by composite with PVDF, a polymer with ferroelectric properties. A series of samples were insulated with dielectric and voltage resistance. The results show that the dielectric constant increases with the increase of filler. At low content, the energy storage density and breakdown strength are significantly increased, indicating that ZnS and ZnO have potential applications in electronic packaging, high-voltage electrical and other fields. Secondly. On the basis of the study of zinc oxide and zinc sulfide, nano-sized ZnO-ZnS composite particle filler was further prepared, and then it was compounded with polyvinylidene fluoride (PVDF). The results show that the dielectric loss of the composites is restrained effectively with the increase of filler content. The energy storage density and breakdown strength of the three-phase composites increased significantly compared with the same content of ZnS and ZnO.
【學位授予單位】：深圳大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TB383.1;TB33

【參考文獻】

相關期刊論文 前9條

1 鐘少龍;黨智敏;;高儲能密度低損耗介電高分子功能復合材料的研究進展[J];絕緣材料;2016年12期

2 黃興溢;江平開;;聚合物絕緣與功能電介質材料的若干研究熱點述評[J];絕緣材料;2016年09期

3 馮曉軍;劉曉林;趙坤;陳建峰;;多巴胺改性BaTiO_3對BaTiO_3/PVDF復合材料擊穿場強的影響[J];復合材料學報;2015年03期

4 吳建東;蘭莉;尹毅;李U，

本文編號：1424217