利用反向有效介质理论研究CB/HDPE复合导电体系太赫兹波段的介电性质
通过熔融共混然后压片的方法将碳黑（CB）颗粒分散在对太赫兹光透明的高密度聚乙烯（HDPE）基体中,采用太赫兹时域光谱装置测量了该体系的介电信息,首次尝试采用反向有效介质理论,在CB浓度固定、只改变去极化因子的情况下,提取了CB颗粒在该波段的介电常数实部和虚部、折射率和吸收系数等信息.研究发现,从不同浓度的复合体系中提取的数据吻合较好,结合直流电导率测量结果发现去极化因子与体系内部颗粒的浓度和存在状态紧密相关,在逾渗阈值处去极化因子显著降低.采用偶极子弛豫模型对提取的结果进行了理论分析,得到了CB颗粒的弛豫时间、弛豫强度和电导率等信息。...
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| Published in | 红外与毫米波学报 Vol. 33; no. 6; pp. 629 - 634 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
黄河水利职业技术学院,河南开封475003
2014
中国科学院上海应用物理研究所,上海201800%中国科学院上海应用物理研究所,上海,201800 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-9014 |
| DOI | 10.3724/SP.J.1010.2014.00629 |
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| Abstract | 通过熔融共混然后压片的方法将碳黑（CB）颗粒分散在对太赫兹光透明的高密度聚乙烯（HDPE）基体中,采用太赫兹时域光谱装置测量了该体系的介电信息,首次尝试采用反向有效介质理论,在CB浓度固定、只改变去极化因子的情况下,提取了CB颗粒在该波段的介电常数实部和虚部、折射率和吸收系数等信息.研究发现,从不同浓度的复合体系中提取的数据吻合较好,结合直流电导率测量结果发现去极化因子与体系内部颗粒的浓度和存在状态紧密相关,在逾渗阈值处去极化因子显著降低.采用偶极子弛豫模型对提取的结果进行了理论分析,得到了CB颗粒的弛豫时间、弛豫强度和电导率等信息。 |
|---|---|
| AbstractList | O649; 通过熔融共混然后压片的方法将碳黑(CB)颗粒分散在对太赫兹光透明的高密度聚乙烯(HDPE)基体中,采用太赫兹时域光谱装置测量了该体系的介电信息,首次尝试采用反向有效介质理论,在CB浓度固定、只改变去极化因子的情况下,提取了CB颗粒在该波段的介电常数实部和虚部、折射率和吸收系数等信息.研究发现,从不同浓度的复合体系中提取的数据吻合较好,结合直流电导率测量结果发现去极化因子与体系内部颗粒的浓度和存在状态紧密相关,在逾渗阈值处去极化因子显著降低.采用偶极子弛豫模型对提取的结果进行了理论分析,得到了CB颗粒的弛豫时间、弛豫强度和电导率等信息. 通过熔融共混然后压片的方法将碳黑（CB）颗粒分散在对太赫兹光透明的高密度聚乙烯（HDPE）基体中,采用太赫兹时域光谱装置测量了该体系的介电信息,首次尝试采用反向有效介质理论,在CB浓度固定、只改变去极化因子的情况下,提取了CB颗粒在该波段的介电常数实部和虚部、折射率和吸收系数等信息.研究发现,从不同浓度的复合体系中提取的数据吻合较好,结合直流电导率测量结果发现去极化因子与体系内部颗粒的浓度和存在状态紧密相关,在逾渗阈值处去极化因子显著降低.采用偶极子弛豫模型对提取的结果进行了理论分析,得到了CB颗粒的弛豫时间、弛豫强度和电导率等信息。 |
| Author | 陈西良 朱智勇 |
| AuthorAffiliation | 黄河水利职业技术学院,河南开封475003 中国科学院上海应用物理研究所,上海201800 |
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| Author_FL | CHEN Xi-Liang ZHU Zhi-Yong |
| Author_FL_xml | – sequence: 1 fullname: CHEN Xi-Liang – sequence: 2 fullname: ZHU Zhi-Yong |
| Author_xml | – sequence: 1 fullname: 陈西良 朱智勇 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.3724/SP.J.1010.2014.00629 |
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| DocumentTitleAlternate | Dielectric properties of CB/HDPE composites in terahertz band with reversed effective medium theory |
| DocumentTitle_FL | Dielectric properties of CB/HDPE composites in terahertz band with reversed effective medium theory |
| EndPage | 634 |
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| Keywords | 有效介质理论 偶极子弛豫 碳黑(CB) reversed effective medium approach (REMA) terahertz dipole relaxation carbon black (CB) 太赫兹 |
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| Notes | Carbon black （CB） was dispersed into high density polyethylene （HDPE）,which was transparent to terahertz wave,by melt-mixing and compressing method.The dielectric properties of the composites in terahertz region were then investigated.Reversed effective medium approach （REMA） was firstly applied to the analysis of the composites.The real part and imaginary part of dielectric constants,refractive index and absorption coefficient of the pure CB particles were extracted with REMA from that of the composites with fixed concentration and an alterable parameter of depolarization factor.The results indicate that the calculated dielectric constants,absorption coefficient and refractive index of CB from different concentrations coincide well with each other.Combined with the direct current conductivity test,the depolarization factor was found to be correlated to the CB concentration and its distributing state in the composites.It has an apparent decrease at the percolation threshold of CB/HDPE composites.The extracted |
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| PublicationTitle | 红外与毫米波学报 |
| PublicationTitleAlternate | Journal of Infrared and Millimeter Waves |
| PublicationTitle_FL | Journal of Infrared and Millimeter Waves |
| PublicationYear | 2014 |
| Publisher | 黄河水利职业技术学院,河南开封475003 中国科学院上海应用物理研究所,上海201800%中国科学院上海应用物理研究所,上海,201800 |
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| SubjectTerms | 偶极子弛豫 太赫兹 有效介质理论 碳黑（CB） |
| Title | 利用反向有效介质理论研究CB/HDPE复合导电体系太赫兹波段的介电性质 |
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