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水在高温硫化硅橡胶中的扩散特性研究

DOI: 10.13334/j.0258-8013.pcsee.2015.01.028, PP. 231-239

Keywords: 高温硫化硅橡胶,水分子,扩散过程,固体核磁共振,Arrhenius方程

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Abstract:

水分侵入是造成复合绝缘子高温硫化硅橡胶伞裙、护套材料老化的主要因素之一。为了获得能够准确描述水分子在硅橡胶中扩散的扩散模型和扩散特性,使用固体核磁共振(nuclearmagneticresonance,NMR)技术,分析了水分子在硅橡胶中的存在状态;并通过称重法试验,获得了水分子在硅橡胶中扩散时硅橡胶的增重曲线。研究表明,水分子在硅橡胶中存在“自由态”和“结合态”两种不同的状态。固体核磁共振和称重法的试验结果都表明,水分子在硅橡胶中的扩散过程符合Langmuir扩散模型,而不符合经典的Fick扩散模型。同时研究了水分子扩散过程的影响因素,结果发现:自由态水分子的含量随温度的升高而增加,结合态水分子的含量随温度的升高而降低,且温度对扩散系数的影响符合经典的Arrhenius方程;硅橡胶中的氢氧化铝(ATH)填料含量的增加会导致结合态水分子含量的增加,但ATH含量对自由态水分子含量的影响不显著。

References

[1]  Dai Jianjun,Yao Xuefeng,Yeh H Y,et al.Moisture absorption of filled silicone rubber under electrolyte [J].Journal of applied polymer science,2006,99(5):2253-2257.
[2]  Lutz,Guan Zhicheng,Wang Liming,et al. Water absorption and water vapor permeation characteristics of HTV silicone rubber material[C]//Conference Record of the 2012 IEEE International Symposium on Electrical Insulation.San Juan,PR,USA:IEEE,2012:478-482.
[3]  Carter H G,Kibler K G.Langmuir-type model for anomalous moisture diffusion in composite resins [J].Journal of Composite Materials,1978,12(2):118-131.
[4]  Klotz J,Witold B,Michael H,et al.Epoxy and glass composites in water studied with 2 H NMR[J].Polymer Engineering & Science,1996,36(8):1129-1133.
[5]  Zhou Jiming,Lucas J P.Hygrothermal effects of epoxy resin. Part I:the nature of water in epoxy[J].Polymer,1999,40(20):5505-5512.
[6]  梁晓天.核磁共振:高分辨氢谱的解析和应用[M].北京:科学出版社,1982:3-28. Liang Xiaotian.NMR:High resolution spectrum analysis and application of hydrogen[M].Beijing:Science press,1982:3-28(in Chinese).
[7]  王乃兴.核磁共振谱学:在有机化学中的应用[M].北京:化学工业出版社,2006:7-35. Wang Naixing.Nuclear magnetic resonance spectroscopy- Application in organic chemistry[M].Beijing:Chemical industry press,2006:7-35(in Chinese).
[8]  Shen Chi-Hung,Springer George S.Moisture absorption and desorption of composite materials[J].Journal of Composite Materials,1976,10(1):2-20.
[9]  Kumosa L,Benedikt B,Armentrout D,et al.Moisture absorption properties of unidirectional glass/polymer composites used in composite (non-ceramic) insulators [J].Composites Part A:Applied Science and Manufacturing,2004,35(9):1049-1063.
[10]  Sylvain P,Rondeau-Mouro C,Sulpice-Gaillet C,et al.Free/bound water absorption in an epoxy adhesive [J].Polymer,2005,46(24):10733-10740.
[11]  姜启源.大学数学实验[M].北京:清华大学出版社,2005:74-129. Jiang Qiyuan.Mathematics experiment of university [M].Beijing:Tsinghua University Press,2005:74-129(in Chinese).
[12]  蔡建华.量子力学[M].北京:高等教育出版社,1999:63-98. Cai Jianhua.Quantum mechanics[M].Beijing:Higher education press,1999:63-98(in Chinese).
[13]  冯蕴深.磁共振原理[M].北京:高等教育出版社,1992:12-43. Feng Yunshen.The Principle of magnetic resonance [M].Beijing:Higher education press,1992:12-43(in Chinese).
[14]  Michihiro T,Masaki S,Norio I,et al.Spin-spin relaxation and apparent diffusion coefficient of magnetically oriented collagen gels[J].IEEE Transactions on Magnetics,2004,40(4):2976-2978.
[15]  赵新.核磁共振在聚合物辐射化学中的应用[M].北京:中国铁道出版社,2012:58-61. Zhao Xin.NMR application in polymer radiation chemistry[M].Beijing:China Railway Publish House,2012:58-61(in Chinese).
[16]  朱文涛.基础物理化学[M].北京:清华大学出版社,2011:232-273. Zhu Wentao.Basic physical chemistry[M].Beijing :Tsinghua University Press,2006:232-273(in Chinese).
[17]  Hashiguchi T,Arise N,Otsubo M,et al.Water absorption,hydrophobicity characteristics and surface change of polymer[C]//2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena.Victoria,Canada:IEEE,2000:195-198.
[18]  Liang Xidong,Wang Shaowu,Fan Ju,et al.Development of composite insulators in China[J].IEEE Transactions on Dielectrics and Electrical Insulation,1999,6(5):586-594.
[19]  关志成,刘瑛岩,周远翔,等.绝缘子及输变电设备外绝缘[M].北京:清华大学出版社,2006:261-311. Guan Zhicheng,Liu Yingyan,Zhou Yuanxiang,et al.Insulators and outdoor insulation of power transmission equipments[M].Beijing:Tsinghua University Press,2006:261-311(in Chinese)
[20]  Liang Xidong,Wang Jiafu.Review of 30 years development of silicone rubber insulators:The Chinese experience[C]//World Congress on Insulators,Arresters and Bushings.Canada,Vancouver:INMR,2013:1-3.
[21]  Gubanski S M..Modern outdoor insulation-concerns and challenges[J].IEEE Electrical Insulation Magazine,2005,21(6):5-11.
[22]  刘泽洪.复合绝缘子使用现状及其在特高压输电线路中的应用前景[J].电网技术,2006,30(12):1-7. Liu Zehong.Present situation and prospects of applying composite insulators to UHF transmission lines in China [J].Power System Technology,2006,30(12):1-7(in Chinese).
[23]  Cherney E A.50 years in the development of polymer suspension-type insulators[J].IEEE Electrical Insulation Magazine,2013,29(3):18-26.
[24]  梁曦东,戴建军.防护复合绝缘子芯棒脆断的方法[J].中国电机工程学报,2006,26(10):136-140. Liang Xidong,Dai Jianjun.A method for preventing brittle fracture of FRP rod of composite insulator [J].Proceedings of the CSEE,2006,26(10):136-140(in Chinese).
[25]  王家福.复合绝缘子酥朽断裂的研究[D].北京:清华大学,2012. Wang Jiafu.Research on Decay-like fracture of composite insulator[D].Beijing:Tsinghua University,2012(in Chinese).
[26]  Crank J.The mathematics of diffusion[M].Oxford:Oxford university press,1979:44-68.
[27]  仝健民,田民波.材料科学基础[M].北京:清华大学出版社,1998:256-289. Tong Jianmin,Tian Minbo.Fundamental of materials [M].Beijing:Tsinghua university press,1998:256-289(in Chinese).

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