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复掺碳纳米管/碳纤维水泥基材料电化学阻抗谱研究
Research on Electrochemical Impedance Spectroscopy of Carbon Nanotubes/Carbon Fiber Modified Cement-based Materials
2018年第1期
碳纳米管;碳纤维;电化学阻抗谱;等效电路图
Carbon nanotube; Carbon fiber; Electrochemical impedance spectroscopy; Equivalent circuit diagram
2018年第1期
1000-4637(2018)01-54-04
国家自然科学基金项目(51009057);江苏省科技计划项目(BE2015706
刘 静,刘小艳,赵亚州,田 甜,艾 婷
河海大学力学与材料学院,南京210098

刘 静,刘小艳,赵亚州,田 甜,艾 婷

刘静,刘小艳,赵亚州,等.复掺碳纳米管/碳纤维水泥基材料电化学阻抗谱研究[J].混凝土与水泥制品,2018(1):54-57.

LIU J,LIU X Y,ZHAO Y Z,et al.Research on Electrochemical Impedance Spectroscopy of Carbon Nanotubes/Carbon Fiber Modified Cement-based Materials[J].China Concrete and Cement Products,2018(1):54-57.

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摘 要:研究了龄期和碳纳米管掺量对复掺碳纳米管/碳纤维水泥基材料电化学阻抗谱的影响,结合碳纳米管/碳纤维复掺水泥基材料等效电路图,分析了碳纳米管/碳纤维复掺水泥基材料导电性能的影响因素。结果表明,随着碳纳米管掺量的增加,碳纳米管改性水泥基材料阻抗值降低;随着龄期的增长,碳纳米管改性水泥基材料阻抗值逐渐增加;随着碳纳米管掺量增加,碳纤维/碳纳米管复掺水泥基材料孔溶液的电阻Rs几乎不变,0.2%碳纤维/0.5%碳纳米管水泥基材料的电荷传递电阻Rct值相比于0.2%碳纤维水泥基材料的Rct值减小了91.1%,基体电阻Rc值减小了95%,说明碳纳米管能大大改善水泥基材料导电性能。 Abstract: The impact of the age and dosage of carbon nanotubes on the electrochemical impedance spectroscopy of carbon nanotubes/carbon fiber modified cement-based materials was studied, and the equivalent circuit diagram of carbon nanotubes/carbon fiber modified cement-based materials was studied to analyze the influencing factor on the conductive mechanism of carbon nanotubes/carbon fiber modified cement-based materials. The results show that as the dosage of carbon nanotubes increases, impedance values of carbon nanotubes modified cement-based materials will reduce. The impedance values of carbon nanotubes modified cement-based materials will increase as time goes on. With the content of carbon nanotube increasing, resistance Rct produced by reaction of charge transferring and the impedance values of carbon nanotubes/carbon fiber modified cement-based materials reduce with resistance Rs of pore solution Rs abidingly. Rct values of 0.2% carbon fiber/0.5% carbon nanotube modified cement-based materials compared to Rct of the 0.2% carbon fiber cement-based materials values decreases by 91.1% and the Rc value decreases by 95%, which illustrates carbon nanotube can greatly improve the conductive performance of cement-based materials.
英文名 : Research on Electrochemical Impedance Spectroscopy of Carbon Nanotubes/Carbon Fiber Modified Cement-based Materials
刊期 : 2018年第1期
关键词 : 碳纳米管;碳纤维;电化学阻抗谱;等效电路图
Key words : Carbon nanotube; Carbon fiber; Electrochemical impedance spectroscopy; Equivalent circuit diagram
刊期 : 2018年第1期
DOI :
文章编号 : 1000-4637(2018)01-54-04
基金项目 : 国家自然科学基金项目(51009057);江苏省科技计划项目(BE2015706
作者 : 刘 静,刘小艳,赵亚州,田 甜,艾 婷
单位 : 河海大学力学与材料学院,南京210098

刘 静,刘小艳,赵亚州,田 甜,艾 婷

刘静,刘小艳,赵亚州,等.复掺碳纳米管/碳纤维水泥基材料电化学阻抗谱研究[J].混凝土与水泥制品,2018(1):54-57.

LIU J,LIU X Y,ZHAO Y Z,et al.Research on Electrochemical Impedance Spectroscopy of Carbon Nanotubes/Carbon Fiber Modified Cement-based Materials[J].China Concrete and Cement Products,2018(1):54-57.

摘要
参数
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参考文献
引用本文

摘   要:研究了龄期和碳纳米管掺量对复掺碳纳米管/碳纤维水泥基材料电化学阻抗谱的影响,结合碳纳米管/碳纤维复掺水泥基材料等效电路图,分析了碳纳米管/碳纤维复掺水泥基材料导电性能的影响因素。结果表明,随着碳纳米管掺量的增加,碳纳米管改性水泥基材料阻抗值降低;随着龄期的增长,碳纳米管改性水泥基材料阻抗值逐渐增加;随着碳纳米管掺量增加,碳纤维/碳纳米管复掺水泥基材料孔溶液的电阻Rs几乎不变,0.2%碳纤维/0.5%碳纳米管水泥基材料的电荷传递电阻Rct值相比于0.2%碳纤维水泥基材料的Rct值减小了91.1%,基体电阻Rc值减小了95%,说明碳纳米管能大大改善水泥基材料导电性能。
Abstract: The impact of the age and dosage of carbon nanotubes on the electrochemical impedance spectroscopy of carbon nanotubes/carbon fiber modified cement-based materials was studied, and the equivalent circuit diagram  of carbon nanotubes/carbon fiber modified cement-based materials was studied to analyze the influencing factor on the conductive mechanism of carbon nanotubes/carbon fiber modified cement-based materials. The results show that as the dosage of carbon nanotubes increases,  impedance values of carbon nanotubes modified cement-based materials will reduce. The impedance values of carbon nanotubes modified cement-based materials will increase as time goes on. With the content of carbon nanotube increasing, resistance Rct produced by reaction of charge transferring and the impedance values of carbon nanotubes/carbon fiber modified cement-based materials reduce with resistance Rs of pore solution Rs abidingly. Rct values of 0.2% carbon fiber/0.5% carbon nanotube  modified cement-based materials compared to Rct of the 0.2% carbon fiber cement-based materials values decreases by 91.1%  and the Rc value decreases by 95%, which illustrates carbon nanotube can greatly improve the conductive performance of cement-based materials.

关键词:
碳纳米管;碳纤维;电化学阻抗谱;等效电路图
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(1)单掺CNTs水泥基材料28d龄期时,随着CNTs掺量增加,复合材料阻抗值降低。随龄期增长,单掺CNTs水泥基材料Nyquist图逐渐向右移动,Nyquist图中C区段随着龄期的增长越来越明显,半圆半径增大,阻抗值逐渐增大。
(2)复掺CNTs/CF水泥基材料28d龄期,CNTs掺量为0、0.1%、0.3%、0.5% 时,随着CNTs掺量的增加,孔溶液电阻Rs几乎不变, Rct值分别为3190Ω、871.3Ω、538.5Ω、283.9Ω,Rc值分别为7623Ω、606.6Ω、497.4Ω、378.3Ω。0.2%CF+0.5%CNTs水泥基材料的Rct值相比于0.2%CF水泥基材料Rct值减小了91.1%,Rc值减小了95%,说明CNTs能大大改善水泥基材料的导电性能。
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刘静,刘小艳,赵亚州,.复掺碳纳米管/碳纤维水泥基材料电化学阻抗谱研究[J].混凝土与水泥制品,2018(1):54-57.

LIU J,LIU X Y,ZHAO Y Z,et al.Research on Electrochemical Impedance Spectroscopy of Carbon Nanotubes/Carbon Fiber Modified Cement-based Materials[J].China Concrete and Cement Products,2018(1):54-57.

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