多壁碳纳米管的分散效果对水泥净浆电学和力学性能的影响研究  

RESEARCH ON THE EFFECTS OF DISPERSING TREATMENT OF MULTI-WALLED CARBON NANOTUBES ON THE ELECTRICAL AND MECHANICAL PROPERTIES OF CEMENT PASTE

作　　者：黎恒杆 王玉林 林丹萍 苏晴微 林姝彦 潘正阳 杨竞龙 Ghimire Prateek 朱德良 LI Henggan;WANG Yulin;LIN Danping;SU Qingwei;LIN Shuyan;PAN Zhengyang;YANG Jinglong;GHIMIRE Prateek;ZHU Deliang(Department of Civil Engineering and Architecture,Wuyi University,Wuyishan 354300,China;Provincial Engineering Research Center of Prevention and Control of Geological Hazards of Mountainous Region of Northern Fujian Province,Wuyishan 354300,China;Fujian Higher Education Institutions’Key Laboratory of Smart Town Construction of Hilly Mountains,Wuyishan 354300,China)

机构地区：[1]武夷学院土木工程与建筑学院,福建武夷山354300 [2]闽北山地地质灾害防治福建省高校工程研究中心,福建武夷山354300 [3]丘陵山地智慧城镇福建省高校重点实验室,福建武夷山354300

出　　处：《工业建筑》2019年第10期146-150,共5页Industrial Construction

基　　金：福建省自然科学基金项目(2019J01060795,J201601744);福建省高校跨新世纪优秀人才支持项目(闽教科[2016]);国家级大学生创新实验项目(201810397015,201910397073);武夷学院青年博士科学团队(武综[2017]66)

摘　　要：研究分散处理后的多壁碳纳米管对水泥净浆材料的电学性能和力学性能影响。试验结果表明:多壁碳纳米管水泥净浆材料的电阻率随着测试频率的升高而降低,随养护时间的增长而增大。当多壁碳纳米管分散均匀时,电阻率随掺量的增加而减小,两者呈良好的相关性;当分散不均匀时,电阻率随多壁碳纳米管掺量变化不确定,呈现离散性。在低掺量条件下,当多壁碳纳米管在水泥净浆分散均匀时,多壁碳纳米管能提高水泥净浆的抗压强度和抗折强度,且提高幅度随多壁碳纳米管掺量增加而增大;而当多壁碳纳米管分散不均匀时,掺入多壁碳纳米管会削弱水泥净浆的抗折强度和抗压强度,其力学性能与多壁碳纳米管掺入量之间关系呈不确定性。The effects of dispersion of multi-walled carbon nanotubes(MWCNTs)on the electrical and mechanical properties were studied.The results showed that the resistivity of cement paste with MWCNTs decreased with the increase of testing frequency,and increased with the increase of curing age;when the MWCNTs were uniformly dispersed,the resistivity decreased with the increase of the MWCNTs content,and showing a good correlation;the resistivity changed irregularly with the content of nonuniformly dispersed MWCNTs,which was discrete.The lower content of MWCNTs could improve the compressive strength and flexural strength of the cement paste when the MWCNTs were uniformly dispersed,and it became more and more significant with the increase of MWCNTs content.However,the flexural strength and compressive strength of the cement paste could be weaken by the addition of unevenly dispersed MWCNTs,and the relationship between the mechanical properties and the content of MWCNTs was undetermined.

关 键 词：多壁碳纳米管 水泥净浆 分散效果 力学性能 电学性能 

分 类 号：TB3[一般工业技术—材料科学与工程]