原纤化天丝纤维纸基复合材料的制备及其电气性能的研究
|
摘要
天丝纤维作为一种可再生纤维,具有多重原纤结构的特点,通过原纤化处理制备的微纳米级别的天丝纤维可广泛应用于超级电容器、电池隔膜等材料领域。本文选取高度原纤化的天丝纤维,探讨了天丝纤维纸基复合材料结构对其介电常数及击穿电压的影响规律。结果表明,天丝纤维纸基复合材料的相对介电常数实测值与按照体积比经验理论公式模拟计算值有较好对应性;采用具有微纳米直径的天丝纤维制备的定量40 g/m~2的电解电容器纸,压光后介电强度可达到18.27 kV/mm;参考复合介质串联电容模型,可根据单层纸参数计算双层天丝纤维纸基复合材料的击穿电压,从而指导双层电容器隔膜的结构配方设计。
As a kind of renewable fiber, tencel fiber has the characteristics of multiple fibril structure. Tencel fiber prepared by fibrillation treatment can be widely used in materials such as supercapacitors and battery separators. In this paper, the highly fibrillated tencel fiber was selected, and the influence of the structure of tencel fiber paper on its dielectric constant and breakdown voltage was discussed. The results show that the measured values of the relative dielectric constant of the tencel fiber paper were in good agreement with the empirical calculations based on the volumetric empirical formula. Using 40 g/m~2 electrolytic capacitor paper prepared with tencel fiber, the dielectric strength after calendering could reach 18.27 kV/mm. Considering the composite dielectric series capacitance model, the breakdown voltage of the double-layer tencel fiber paper could be calculated according to the parameters of single-layer paper, thereby guiding the structural formula design of the double-layer capacitor separator.
As a kind of renewable fiber, tencel fiber has the characteristics of multiple fibril structure. Tencel fiber prepared by fibrillation treatment can be widely used in materials such as supercapacitors and battery separators. In this paper, the highly fibrillated tencel fiber was selected, and the influence of the structure of tencel fiber paper on its dielectric constant and breakdown voltage was discussed. The results show that the measured values of the relative dielectric constant of the tencel fiber paper were in good agreement with the empirical calculations based on the volumetric empirical formula. Using 40 g/m~2 electrolytic capacitor paper prepared with tencel fiber, the dielectric strength after calendering could reach 18.27 kV/mm. Considering the composite dielectric series capacitance model, the breakdown voltage of the double-layer tencel fiber paper could be calculated according to the parameters of single-layer paper, thereby guiding the structural formula design of the double-layer capacitor separator.
引文
[1] Nomoto S,Nataka H,Yoshioka K,et al.Advanced capacitors and their application [J].Power Souzces,2001,97-98:807-811.
[2] Chen Wanping.Current status and prospect of electrolytic capacitor paper[J].China Pulp and Paper,2010,29(1):85-87(in Chinese).陈万平.电解电容器纸的现状与展望[J].中国造纸,2010,29(1):85-87.
[3] Liang Gaoyong,Lai Kan,Zhang Hong.Discussion on fibrillation of Lyocell fiber [J].Shanghai Textile Technology,1999(2):57-59(in Chinese).梁高勇,来侃,张宏.Lyocell纤维原纤化问题的探讨[J].上海纺织科技,1999(2):57-59.
[4] Hayashi H,Kawai H,Sonetaka T,et al.Separator for alkaline batteries:US5366832[P].1994.
[5] Kawai H,Toyoura H,Katayama T,et al.Separator for alkaline battery and battery using same:EP1542295[P].2004.
[6] Harada T,Nagi H,Kawai H,et al.Alkaline battery separator and alkaline primary battery:US20090017385[P].2009.
[7] Schuster K C,Aldred P,Villa M.Characterising the emerging Lyocell fibres structures by ultra small angle neutron scattering(usans) [J].Lenzinger Berichte,2003(82):107-117.
[8] Niskanen K,Yhdistys P I,Industry T A O,et al.Paper physics[M].USA:Finnish Paper Engineers' Association,TAPPI,1998.
[9] Doicu A,Wriedt T.T-matrix method for electromagnetic scattering from scatterers with complex structure[J].Journal of Quantitative Spectroscopy & Radiative Transfer,2001,70(4-6):663-673.
[10] Mackay T G,Lakhtakia A,Weiglhofer W S.Homogenisation of isotropic,cubically nonlinear,composite mediums by the strong-permittivity-fluctuation theory:third-order considerations[J].Optics Communications,2002,204(1):219-228.
[11] Yang Kaixin.Ferrite absorbing material and its application[J].Magnetic Materials and Devices,1996,(3):19-23(in Chinese).阳开新.铁氧体吸波材料及其应用[J].磁性材料及器件,1996,(3):19-23.
[12] Chew W C,Friedrich J A,Geiger R.A multiple scattering solution for the effective permittivity of a sphere mixture[J].IEEE Transactions on Geoscience & Remote Sensing,1990,28(2):207-214.
[13] 严璋,朱德恒.高电压绝缘技术[M].北京:中国电力出版社,2015:220-249.
[14] 曹晓珑,钟力生.电气绝缘技术基础[M].北京:机械工业出版社,2009:97-107.
[15] Asoh H,Nakamura K,Ono S.Control of pit initiation sites on aluminum foil using colloidal craystals as mask [J].Electrochimica Acta,2007,53(1):83-86.
[16] Kang J,Shin Y,Tak Y.Growth of etch pits formed during sonoelectrochemical etching of aluminum [J].Electrochimica Acta,2005,51(5):1012-1016.
[2] Chen Wanping.Current status and prospect of electrolytic capacitor paper[J].China Pulp and Paper,2010,29(1):85-87(in Chinese).陈万平.电解电容器纸的现状与展望[J].中国造纸,2010,29(1):85-87.
[3] Liang Gaoyong,Lai Kan,Zhang Hong.Discussion on fibrillation of Lyocell fiber [J].Shanghai Textile Technology,1999(2):57-59(in Chinese).梁高勇,来侃,张宏.Lyocell纤维原纤化问题的探讨[J].上海纺织科技,1999(2):57-59.
[4] Hayashi H,Kawai H,Sonetaka T,et al.Separator for alkaline batteries:US5366832[P].1994.
[5] Kawai H,Toyoura H,Katayama T,et al.Separator for alkaline battery and battery using same:EP1542295[P].2004.
[6] Harada T,Nagi H,Kawai H,et al.Alkaline battery separator and alkaline primary battery:US20090017385[P].2009.
[7] Schuster K C,Aldred P,Villa M.Characterising the emerging Lyocell fibres structures by ultra small angle neutron scattering(usans) [J].Lenzinger Berichte,2003(82):107-117.
[8] Niskanen K,Yhdistys P I,Industry T A O,et al.Paper physics[M].USA:Finnish Paper Engineers' Association,TAPPI,1998.
[9] Doicu A,Wriedt T.T-matrix method for electromagnetic scattering from scatterers with complex structure[J].Journal of Quantitative Spectroscopy & Radiative Transfer,2001,70(4-6):663-673.
[10] Mackay T G,Lakhtakia A,Weiglhofer W S.Homogenisation of isotropic,cubically nonlinear,composite mediums by the strong-permittivity-fluctuation theory:third-order considerations[J].Optics Communications,2002,204(1):219-228.
[11] Yang Kaixin.Ferrite absorbing material and its application[J].Magnetic Materials and Devices,1996,(3):19-23(in Chinese).阳开新.铁氧体吸波材料及其应用[J].磁性材料及器件,1996,(3):19-23.
[12] Chew W C,Friedrich J A,Geiger R.A multiple scattering solution for the effective permittivity of a sphere mixture[J].IEEE Transactions on Geoscience & Remote Sensing,1990,28(2):207-214.
[13] 严璋,朱德恒.高电压绝缘技术[M].北京:中国电力出版社,2015:220-249.
[14] 曹晓珑,钟力生.电气绝缘技术基础[M].北京:机械工业出版社,2009:97-107.
[15] Asoh H,Nakamura K,Ono S.Control of pit initiation sites on aluminum foil using colloidal craystals as mask [J].Electrochimica Acta,2007,53(1):83-86.
[16] Kang J,Shin Y,Tak Y.Growth of etch pits formed during sonoelectrochemical etching of aluminum [J].Electrochimica Acta,2005,51(5):1012-1016.