碳纳米管材料低频电磁参数及吸波产热特性

doi:10.11949/j.issn.0438-1157.20181402

化工学报 ›› 2019, Vol. 70 ›› Issue (S1): 28-34.DOI: 10.11949/j.issn.0438-1157.20181402

碳纳米管材料低频电磁参数及吸波产热特性

李哲(),王文龙(),张梦,孙静,毛岩鹏,赵希强,宋占龙

山东大学燃煤污染物减排国家工程实验室，山东济南 250061

收稿日期:2018-11-22 修回日期:2018-11-28 出版日期:2019-03-31 发布日期:2019-03-31
通讯作者: 王文龙
作者简介:<named-content content-type="corresp-name">李哲</named-content>（1993—），女，硕士研究生，<email>sdulz931002@163.com</email>|王文龙（1977—），男，博士，教授，<email>wwenlong@sdu.edu.cn</email>
基金资助:
国家自然科学基金项目(51506116，51576118);山东省自然科学基金重大基础研究项目(ZR2017ZC0714);山东大学青年学者未来计划项目(2018 WLJH75, 2016WLJH37)

Low frequency electromagnetic parameters and absorbing heat generation properties of carbon nanotubes

Zhe LI(),Wenlong WANG(),Meng ZHANG,Jing SUN,Yanpeng MAO,Xiqiang ZHAO,Zhanlong SONG

National Engineering Laboratory of Coal-fired Pollutants Emission Reduction, Shandong University, Jinan 250061, Shandong, China

Received:2018-11-22 Revised:2018-11-28 Online:2019-03-31 Published:2019-03-31
Contact: Wenlong WANG

摘要/Abstract

摘要：

微波的热利用技术促进了吸波材料的应用研究。碳纳米管（CNTs）是近年来新兴的强吸波材料，具有密度小、比表面积大、量子尺寸效应的特点。对碳纳米管吸波材料的复介电常数和复磁导率随碳纳米管含量的变化进行探究。在此基础上，以石蜡油为蓄热介质探究了碳纳米管材料在微波辐照下吸波产热特性。同轴传输法适用于小型样品的测量，具有误差小的优点，故采用此种方法作为测量电磁参数手段。对碳纳米管电磁参数测量实验结果表明，碳纳米管吸波材料在低频下对于微波能的损耗兼具电损耗和磁损耗。对碳纳米管吸波产热特性实验结果表明，碳纳米管是一种强吸波材料。

关键词: 纳米材料, 吸收, 复介电常数, 复磁导率, 传热, 热效应

Abstract:

The microwave thermal utilization technology has promoted the application study of microwave absorbing materials. Carbon nanotubes (CNTs)， small in density, large in surface area and with quantum size effect，are new strong absorbing materials in recent years. This article investigated the complex permittivity and complex permeability of CNTs with the change of carbon nanotubes content. On basis of it, absorbing heat generation properties of carbon nanotube were explored under microwave radiation. The coaxial transmission method is suitable for the measurement of small samples which is accurate, so choosing this method to explore its electromagnetic parameters. The results show that both electrical and magnetic losses are exits in CNTs when losing microwave energy. From study of heat generation properties, it is concluded that CNTs is a material whose microwave absorbing ability is strong.

Key words: nanomaterials, absorption, complex permittivity, complex permeability, heat transfer, heat effect

中图分类号:

TK 11⁺3

李哲, 王文龙, 张梦, 孙静, 毛岩鹏, 赵希强, 宋占龙. 碳纳米管材料低频电磁参数及吸波产热特性[J]. 化工学报, 2019, 70(S1): 28-34.

Zhe LI, Wenlong WANG, Meng ZHANG, Jing SUN, Yanpeng MAO, Xiqiang ZHAO, Zhanlong SONG. Low frequency electromagnetic parameters and absorbing heat generation properties of carbon nanotubes[J]. CIESC Journal, 2019, 70(S1): 28-34.

图/表 11

图1 测量系统框架图

Fig.1 Measurement system framework

图2 网络矢量分析仪测试系统

Fig.2 Testing system of network vector analyzer

图3 微波量热法实验装置

Fig.3 Microwave calorimetric apparatus

图4 碳纳米管含量对复介电常数实部的影响

Fig.4 Effect of carbon nanotubes content on real part of complex permittivity

图5 碳纳米管含量对复介电常数虚部的影响

Fig.5 Effect of carbon nanotubes content on imaginary part of complex permittivity

图6 碳纳米管含量对复磁导率实部的影响

Fig.6 Effect of carbon nanotubes content on real part of complex permeability

图7 碳纳米管含量对复磁导率虚部的影响

Fig.7 Effect of carbon nanotubes content on imaginary part of complex permeability

图8 碳纳米管含量对电损耗角正切的影响

Fig.8 Effect of carbon nanotubes content on tangent of electrical loss angle

图9 碳纳米管含量对磁损耗角正切的影响

Fig.9 Effect of carbon nanotubes content on tangent of magnetic loss angle

图10 不同质量碳纳米管石蜡油温升随时间的变化

Fig.10 Temperature rise of CNT wax with different quality and time

图11 不同质量材料吸波产热特性随时间的变化

Fig.11 Variation of absorbing heat generation characteristics of different quality materials with time

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碳纳米管材料低频电磁参数及吸波产热特性

Low frequency electromagnetic parameters and absorbing heat generation properties of carbon nanotubes

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