摘要
研究了多壁碳纳米管(MWCNTs)的分散性及其对水泥基材料的电学和力学性能的影响。结果表明:当超声处理时间为30min,MWCNTs溶液的质量浓度为1%,分散剂PVP-K30添加量为7%时,MWCNTs的分散效果最佳。当MWCNTs在水泥基材料中分散效果好时,水泥基材的电阻率随掺量的增加而降低,水泥基材料的抗压强度和抗折强度随掺量的增加而增大,当MWCNTs掺量为0.025%时,其抗压强度和抗折强度比没添加MWCNTs时分别增大了13.05%和9.4%。当MWCNTs在水泥基材料中分散效果不好时,水泥基材的电阻率随掺量的增加呈离散变化,其抗压强度和抗折强度随掺量的增加而减小,当MWCNTs掺量为0.025%时,其抗压强度和抗折强度比没添加MWCNTs时分别减小了13.35%和13.97%。
The dispersion effect of Multi-walled Carbon Nanotubes (MWCNTs) on the mechanical and electrical property of cement-based material was studied. Results showed that good dispersion effect was obtained when the concentration of MWCNTs was 1.0% with the ultrasonic dispersion time being 30 minutes;and the dispersing effect arrived at the best with PVP-K30 being used as dispersing agent at 7% content. Electrical conductivity of cement-based material was affected when adding MWCNTs,its resistance decreased as the amount of MWCNTs increased at the good dispersing condition,while resistance was lack of regularity at bad dispersing condition. Good dispersion of MWCNTs could increase the compressive and breaking strength,with mixture amount being 0.025% and compressive strength and breaking strength increasing 13.05% and 9.4%,respectively;while decreasing 13.35% and 13.97% at poor dispersing condition.
作者
黎恒杆
苏晴微
林姝彦
林丹萍
潘正阳
杨竞龙
LI Henggan;SU Qingwei;LIN Shuyan;LIN Danping;PAN Zhengyang;YANG Jinglong(Department of Civil Engineering and Architecture,Wuyi University,Wuyishan 354300,China;Fujian Provincial University Key Laboratories in Hill and Mountain Smart Town Construction Technology,Wuyishan 354300,China;Provincial University Engineering Research Center of Geological Hazards Prevention and Control in Mountainous Regions of Northern Fujian Province,Wuyishan 354300,China)
出处
《新乡学院学报》
2019年第6期24-29,共6页
Journal of Xinxiang University
基金
福建省自然科学基金项目（2019J01060795）
福建省大学生创新实验项目（20191039760）
丘陵山地智慧城镇建设技术福建省高校重点实验室开放基金项目（k201803）
关键词
多壁碳纳米管
水泥基
分散效果
力学性能
电学性能
multi-walled carbon nanotubes
cement base
dispersion effect
mechanical property
electrical property
