本文研究了乙烯丙烯酸共聚物(EAA)作为一种改性添加剂对聚乙烯(PE)中水树生长的抑制作用。通过添加不同含量的EAA，在交流电场下进行水树生长试验，找到了交流电场下EAA抑制水树生长的最佳含量，并对试样进行了不同的热处理及机械性能的测试，探讨了结晶形态对PE中水树生长抑制的机理。
Water treeing is one of the main causes of premature breakdown of the polymeric insulation in HV power cable.In this paper,the effect of a water treeing retardant of ethylene-acrylic acid copolymer(EAA) on polyethylene (PE) is studied.We modified the PE by blending with different a little EAA,and cooled off the specimens in three ways,then tested for water treeing in the PE under different AC electric fields for different times,tensile strength and elogation. Finally, the optimum content of EAA to retard water treeing was determined.The results also show that crystalline morphology has some effects on retarding water treeing in PE,and its possible mechanism is discussed.
参考文献
| [1] | E F Steennis;F H Kreuger .Water Treeing in Polyethylene Cable[J].IEEE Transactions on Electrical Insulation,1990,25(05):989-1028. |
| [2] | Steven Boggs .Mechanism for impulse conversion of water trees to electrical trees of XLPE[J].IEEE Transactions on Power Delivery,1998,13(02):310-315. |
| [3] | Ying Li;Kawai J. .Space charge behavior under ac voltage in water-treed PE observed by the PEA method[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,1997(1):52-57. |
| [4] | 范宗怀 .电解质和结晶形态对PE中水树枝生长的影响的研究[D].西安交通大学,1989. |
| [5] | 刘子玉;陈季丹.电介质物理[M].北京:机械工业出版社,1991 |
| [6] | 巫松桢.电气绝缘材料科学与工程[M].西安:西安交通大学出版社,1996 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%