Page 101 - 《精细化工》2021年第11期

第 38 卷第 11 期 精 细 化 工 Vol.38, No.11
2021 年 11 月 FINE CHEMICALS Nov. 2021

功能材料
一步法制备 AgNPs@石墨烯及其在

柔性应力传感器方面的应用

1
王志刚 1,2 ，徐琴琴 1,2* ，银建中 1,2 ，朱 磊 1,2 ，王泽武
（1. 大连理工大学 化工学院，辽宁 大连 116024；2. 大连理工大学 精细化工国家重点实验室，辽宁
大连 116024）

摘要：以天然鳞片石墨、硝酸银、柠檬酸钠、N-甲基吡咯烷酮为原料，采用一步法制备了银纳米粒子（AgNPs）
@石墨烯复合材料。随后在复合材料表面涂覆热塑性聚氨酯，得到了 AgNPs@石墨烯柔性应力传感器。采用 XRD、
TEM、SEM 对 AgNPs@石墨烯复合材料（AgNO 3 与天然鳞片石墨质量比 1∶1）进行了表征，通过拉伸测试仪
和数据采集仪对柔性应力传感器的灵敏性和机械性能进行了测定。结果表明，由 AgNO 3 与天然鳞片石墨质量比
1∶1 制备的柔性应力传感器灵敏度可达 299，远高于纯石墨烯柔性应力传感器的灵敏度（14）；同时具有良好的
阻尼振动响应和循环稳定性，在 1000 次拉伸循环后性能依旧稳定；能有效地识别拉伸应变和压缩应变，可实时
跟踪监测人体表面肌肉运动。
关键词：石墨烯；银纳米粒子；柔性应力传感器；复合材料；功能材料
中图分类号：TP212；TB332 文献标识码：A 文章编号：1003-5214 (2021) 11-2247-06

Preparation of AgNPs@graphene by a one-pot method and
its application in flexible sensors

1
1,2
1,2
1,2
WANG Zhigang , XU Qinqin 1,2* , YIN Jianzhong , ZHU Lei , WANG Zewu
（1. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. State Key
Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China）
Abstract: Silver nanoparticles (AgNPs)@graphene composite material was prepared by a one-step method
using natural flake graphite, silver nitrate, sodium citrate and N-methylpyrrolidone as raw materials. Then,
thermoplastic polyurethane was coated on the surface of the composite material to obtain a flexible stress
sensor based on AgNPs@graphene. AgNPs@graphene composite material [m(AgNO 3 )∶m(natural flake
graphite) = 1∶1] was characterized by XRD, TEM and SEM. The electrical and mechanical properties of
the flexible stress sensor were collected by a tensile tester and a data acquisition instrument. The result
showed that the sensitivity of AgNPs@graphene flexible stress sensor [m(AgNO 3 )∶m(natural flake
graphite) = 1∶1] could reach 299, which was much higher than that of pure graphene flexible stress sensor
(14). At the same time, AgNPs@graphene flexible stress sensor had excellent vibration response and cycle
stability, and its performance was still stable after 1000 cycles. The flexible stress sensor could effectively
identify tensile strain and compressive strain, and track and monitor the movement of human body surface
muscles in real time.
Key words: graphene; Ag nanoparticles; flexible strain sensor; composite materials; functional materials

柔性应力传感器是柔性可穿戴设备的重要部件 到支撑传感器并对外界信号作出响应的作用。导电
之一，一般由柔性基底和导电层组成。柔性基底起 层则可以将外部应力转化为电信号，电信号由特定

收稿日期：2021-04-23; 定用日期：2021-05-28; DOI: 10.13550/j.jxhg.20210429
基金项目：国家自然科学基金（21978043，U1662130，21506027）；中央高校基本科研业务费（DUT20JC36）
作者简介：王志刚（1994—），男，硕士生，E-mail：bh897571@126.com。联系人：徐琴琴（1982—），女，副教授，E-mail：qinqinxu@
dlut.edu.cn。