镧元素掺杂碳纳米管/环氧树脂复合材料的电磁、热学及力学性能

侯翠岭; 宋士华; 魏健宁; 李铁虎

镧元素掺杂碳纳米管/环氧树脂复合材料的电磁、热学及力学性能

1.
九江学院理学院, 江西九江 332005;
2.
九江学院机械与材料工程学院, 江西九江 332005;
3.
西北工业大学材料学院, 陕西西安 710072

基金项目: 江西省自然科学基金（20161BAB206104）；江西省教育厅科技项目（GJJ151070）；九江学院科研项目（2015LGZD07）.

详细信息

通讯作者:
侯翠岭,博士,讲师.E-mail:caleigh@mail.nwpu.edu.cn

中图分类号: TB34
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- 被引次数: 0
出版历程
- 收稿日期: 2016-03-15
- 录用日期: 2016-08-29
- 修回日期: 2016-07-23
- 刊出日期: 2016-08-28

Electromagnetic and mechanical properties of La(NO₃)₃-doped multi-walled carbon nanotube/epoxy resin composites

1.
College of Science, Jiujiang University, Jiujiang 332005, China;
2.
School of Mechanical & Materials Engineering, Jiujiang University, Jiujiang 332005, China;
3.
Department of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China

Funds: Natural Science Foundation of Jiangxi Province(20161BAB206104);Science and Technology Foundation of Jiangxi Educational Committee(GJJ151070);Science Research Program of Jiujiang University(2015LGZD07).

摘要

摘要: 利用La（NO₃）₃掺杂后的碳纳米管（MWCNTs-La（NO₃）₃）作为电磁波吸收剂、环氧树脂（EP）作为基体，制备出了MWCNT-La（NO₃）₃/EP复合材料。运用透射电子显微镜和X射线衍射仪对MWCNTs、MWCNT-La（NO₃）₃的微观结构进行了表征，使用示差扫描热分析仪、电子万能试验机、摆锤冲击试验机和矢量网络分析仪对MWCNT/EP、MWCNT-La（NO₃）₃/EP复合材料的电磁性能、热固化行为和力学性能进行了测试分析。结果表明，适量掺杂La（NO₃）₃可以有效改善MWCNTs的复介电常数和磁导率，使MWCNT/EP复合材料在8.2～12.4 GHz频率范围内的介电损耗和磁损耗大幅度提高，吸收电磁波的能力增强。MWCNTs对EP体系的固化具有促进作用。适量掺杂La（NO₃）₃后，这种促进作用具有增强趋势。并且掺杂少量的La（NO₃）₃对MWCNT/EP复合材料的力学性能影响不明显。
- 碳纳米管 /
- 环氧树脂 /
- 电磁性能 /
- 固化行为 /
- 力学性能
Abstract: La(NO₃)₃-doped MWCNT/epoxy resin (EP) composites were prepared by a solution bending method.Acid-oxidized MWCNTs were first used to adsorb La(NO₃)₃ and were then mixed with EP as matrix and ethylenediamine as a curing agent. The microstructure and morphology of the MWCNTs and MWCNTs-La(NO₃)₃ were investigated by TEM and XRD. The electromagnetic wave absorption properties, curing behavior and mechanical properties of MWCNT/EP and MWCNT-La(NO₃)₃/EP composites were measured by a vector network analyzer, differential scanning calorimetry, an electronic universal tester and a pendulum impact tester. Results indicate that the complex permittivity and permeability of the MWCNTs doped with La(NO₃)₃ are much improved, leading to a substantial increase in the dielectric and magnetic loss of the La(NO₃)₃-doped MWCNT/EP composite in the frequency range from 8.2 to 12.4 GHz and therefore an increase of its electromagnetic wave absorption. The curing rate of EP is accelerated by both the MWCNTs and La(NO₃)₃. The mechanical properties of the MWCNT/EP composite are degraded only slightly by the La(NO₃)₃ doping.
- Multiwalled carbon nanotubes /
- Epoxy resin /
- Electromagnetic property /
- Curing behavior /
- Mechanical property

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