侯存霞,石佳子,李乐,卢敬锐,刘晨,陈曦,付亚波.基于c‒MWCNTs/GO体系的湿敏型智能包装研究[J].包装工程,2022,43(13):9-16.
HOU Cun-xia,SHI Jia-zi,LI Le,LU Jing-rui,LIU Chen,CHEN Xi,FU Ya-bo.Humidity Sensitive Intelligent Packaging Based on c-MWCNTs/GO[J].Packaging Engineering,2022,43(13):9-16. |
| 基于c‒MWCNTs/GO体系的湿敏型智能包装研究 |
| Humidity Sensitive Intelligent Packaging Based on c-MWCNTs/GO |
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| DOI：10.19554/j.cnki.1001-3563.2022.13.002 |
| 中文关键词: 智能包装 湿度传感器 羧基化多壁碳纳米管 氧化石墨烯 |
| 英文关键词: intelligent packaging humidity sensor carboxylated multi-walled carbon nanotubes graphene oxide |
| 基金项目:北京市教委面上研究项目(KM202010015005);北京市高创人才计划(CIT&TCD201904050);北印校级科研项目(Eb202104，Ec202202);国家级大学生创新创业计划项目(20210045) |
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| 中文摘要: |
| 目的 优选羧基化多壁碳纳米管(c–MWCNTs)与氧化石墨烯(GO)作为敏感材料制备湿度传感器，对其湿敏特性进行研究，探索一种能够快速精确监测包装内湿度变化的传感器。方法 通过丝网印刷工艺印制传感器电极基底，在电极表面涂布c–MWCNTs/GO湿敏溶液，混合湿敏溶液中c–MWCNTs的质量分数分别为20%和67%，烘干后得到电阻型湿度传感器，测定其灵敏度、动态响应、响应恢复时间、吸湿滞后性、重复性等湿敏特性。结果 选用长度为0.5~2 μm的c–MWCNTs制备的湿度传感器灵敏度、线性度优于10~30 μm的。质量分数分别为20%和67%的c–MWCNTs的湿敏溶液制备而得的传感器均对不同湿度敏感，而当c–MWCNTs质量分数为67%时灵敏度更高，线性度更好，在低湿(相对湿度为33%)时响应和恢复时间分别为7 s和3.9 s，高湿(相对湿度为85%)时分别为20 s和15 s，最大吸湿滞后值为17%。结论 将c–MWCNTs与GO掺杂用于制备湿度传感器，可以检测的相对湿度范围为11%~98%，且c–MWCNTs质量分数为67%时传感器具有较高的灵敏度、良好的线性度、良好的重复性、快速的响应恢复能力和较小的吸湿滞后，在未来包装湿度监控应用方面具有广阔前景。 |
| 英文摘要: |
| The work aims to preferably select carboxylated multi-walled carbon nanotubes (c-MWCNTs) and graphene oxide (GO) as sensitive materials to prepare humidity sensor and study the humidity sensitivity characteristics of the sensor to explore a novel sensor that can quickly and accurately monitor the humidity changes in the packaging. The sensor electrode substrate was printed by screen printing process, and the c-MWCNTs/GO humidity sensitive solution was coated on the electrode surface. The mass fraction of c-MWCNTs in the mixed humidity sensitive solution was 20% and 67%, respectively. After drying, a resistive humidity sensor was prepared. The sensitivity, dynamic response, response recovery time, hygroscopic lag and other hygroscopic sensitive characteristics were measured. The humidity sensor prepared with c-MWCNTs of length 0.5~2 μm had better sensitivity and linearity than those prepared by c-MWCNTs of 10~30 μm. The sensor prepared with 20% and 67% mass fraction of c-MWCNTs in the humidity sensitive solution was sensitive to different humidity levels, and the sensitivity and linearity were higher when the mass fraction of c-MWCNTs was 67%. The response and recovery times were 7 s and 3.9 s, respectively at low humidity (33%RH) and 20 s and 15 s, respectively at high humidity (85%RH). The maximum hygroscopic lag value was 17%. The c-MWCNTs can be doped with GO to prepare humidity sensor, which can detect the changes of relative humidity from 11% to 98%, and the sensor prepared by 67% mass fraction of c-MWCNTs has high sensitivity, good linearity, excellent repeatability, fast response recovery and small hygroscopic hysteresis, thus having a broad prospect in the future application of packaging humidity monitoring. |
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