针对110kV XLPE电缆绝缘交联时过氧化二异丙苯(DCP)分解产生的副产物对电缆的性能会产生影响的问题，对XLPE电缆进行脱气处理，对脱气前后的电缆绝缘进行红外光谱分析，并对脱气前后电缆绝缘的介电性能和力学性能进行比较分析。结果表明：交联产生的两种挥发性交联副产物α-甲基苯乙烯和苯乙酮的含量在脱气过程中显著降低，XLPE绝缘中的极性基团数量减少，低频电导率降低，从而使XLPE绝缘的相对介电常数和低频介质损耗因数下降，拉伸强度和断裂伸长率提高。
In view of the problem that the crosslinking by-products decomposed by dicumyl peroxide (DCP) when 110kV XLPE cable is crosslinking would affect the property of cable, XLPE cables were degassed, and the degassed cables insulation were tested by FTIR, then their dielectric property and mechanical properties before and after degassing were analyzed. The results show that the content of two volatile crosslinking by-products, which are methyl styrene and acetophenone, reduce significantly during degassing process, which lead to the quantity of polar groups and conductivity at low frequency decrease, thereby the relative dielectric constant and dielectric loss factor at low frequency of XLPE decrease, and the tensile strength and elongation at break increase.
参考文献
| [1] | Englund, V.;Huuva, R.;Gubanski, S.M.;Hjertberg, T. .Synthesis and efficiency of voltage stabilizers for XLPE cable insulation[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2009(5):1455-1461. |
| [2] | 李欢,李欣,李巍巍,李建英,王国利.含针尖缺陷的XLPE电缆绝缘击穿行为的频率依赖特性研究[J].绝缘材料,2014(02):71-75,83. |
| [3] | 朱晓辉 .交联工艺对交联聚乙烯绝缘特性的影响[D].天津大学,2010. |
| [4] | Terashima K;Murata Y;Muto H et al.Study of Design Method of XLPE Cable for DC Voltage[J].Transactions In-stitute of Electrical Engineers of Japan B,1999,119(B):212-222. |
| [5] | M. Fu;G. Chen;L. A. Dissado;J. C. Fothergill .Influence of Thermal Treatment and Residues on Space Charge Accumulation in XLPE for DC Power Cable Application[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2007(1):53-64. |
| [6] | Y. F. F. Ho;G. Chen;A. E. Davies;S. G. Swingler;S. J. Sutton;R. N. Hampton;S. Hobdell .Measurement of space charge in XLPE insulation under 50 Hz AC electric stresses using the LIPP method[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,2002(3):362-370. |
| [7] | Fukuda T;Irie S;Asada Y et al.The Effect of Morpholo-gy on the Impulse Voltage Breakdown in XLPE Cable Insu-lation[J].IEEE Transactions on Dielectrics and Electrical In-sulation,1982,17(5):386-391. |
| [8] | Chong Y L;Chen G;Hosier I L et al.Heat Treatment of Cross-linked Polyethylene and Its Effect on Morpholopy and Space Charge Evolution[J].IEEE Transactions on Di-electrics and Electrical Insulation,2005,12(6):1209-1221. |
| [9] | 金维芳.电介质物理学[M].北京:科学出版社,1997:70. |
| [10] | 何平笙.新编高聚物的结构和性能[M].北京:科学出版社,2009:276-280,289-291. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%