石墨烯修饰的柔性多彩电热致变色薄膜的制备及性能研究

doi:10.15541/jim20180054

无机材料学报 ›› 2018, Vol. 33 ›› Issue (11): 1232-1236.DOI: 10.15541/jim20180054 CSTR: 32189.14.10.15541/jim20180054

石墨烯修饰的柔性多彩电热致变色薄膜的制备及性能研究

张斌¹, 侯成义², 汪浩鹏¹, 汪志强¹, 柏宇苗², 李强², 张青红², 李耀刚², 王宏志²

1. 中国电子科技集团公司信息科学研究院微系统技术研究所, 北京 100086;
2. 东华大学材料科学与工程学院, 纤维材料改性国家重点实验室, 上海 201620

收稿日期:2018-01-31 修回日期:2018-04-20 出版日期:2018-11-16 网络出版日期:2018-10-20
作者简介:张斌(1980-), 男, 高级工程师. E-mail: ivan_bin@126.com
基金资助:
上海市晨光计划(15CG33);上海市扬帆计划(16YF1400400)

Preparation and Performance of Reduced Graphene Oxide Functionalized Flexible and Multicolor Electrothermal Chromatic Films

ZHANG Bin¹, HOU Cheng-Yi², WANG Hao-Peng¹, WANG Zhi-Qiang¹, BAI Yu-Miao², LI Qiang², ZHANG Qing-Hong², LI Yao-Gang², WANG Hong-Zhi²

1. Microsystems Technology Center, Information Science Academy of China Electronics Technology Group Corporation, Beijing 100086;
2. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China

Received:2018-01-31 Revised:2018-04-20 Published:2018-11-16 Online:2018-10-20
About author:ZHANG Bin. E-mail: ivan_bin@126.com

摘要/Abstract

摘要：

通过化学氧化还原法并辅以抽滤法制备RGO导电薄膜, 通过丝网印刷法制备变色层, 构筑了多层结构的多彩(红-蓝-白以及橙红-黄-白等)柔性电热致变色薄膜。采用SEM、XRD以及Raman等分析薄膜的结构性质。采用红外热成像以及吸收光谱研究了薄膜(红-蓝-白)的热学以及变色性能。结果表明：当加热时间为3.4 s时, 薄膜温度能达到38℃, 变为蓝色; 当加热时间为6.3 s时, 薄膜温度达到45℃, 变为白色。在较低电压下(6 V), 该薄膜能实现多色彩可逆变色, 其变色时间约为6.3 s, 褪色时间约为9.2 s。该柔性电热致变色薄膜以混合纤维素滤膜为基体, 保证了薄膜良好的柔性, 在可穿戴显示领域有着一定的应用价值。

关键词: 石墨烯, 柔性, 多彩, 电热致变色

Abstract:

By using a chemical oxidation-reduction method, reduced graphene oxide (RGO) nanomaterials were synthesized. The powder materials were further dispersed in water and filtered to form a RGO film, which was used as a conductive layer. On the other side of the filter paper, a color changing layer was prepared through screen printing. A multicolor (red-blue-white and orange-yellow-white, etc.) and flexible electrothermal chromatic film was then obtained through combining conductive and color changing layers with protecting substrates. The structural properties of the film (red-blue-white) were analyzed by using SEM, XRD and Raman, etc. Their thermal and color-changing properties were studied by using infrared thermal imaging and absorption spectrum. The results show that when surface temperature of the film reaches 38℃ (within 3.4 s under Joule heat treatment at ambient conditions), it turns blue. Further heating to 45℃ (within 6.3 s under Joule heat treatment), it turns white. The multi-color changes are achieved at low working voltage (6 V). After switching off the voltage, the film restores its original color within 9.2 s. The electrothermal chromatic films have good flexibility too, therefore, they might be applied in wearable displays.

Key words: RGO, flexible, multicolor, electrothermal chromatic

中图分类号:

TQ174

张斌, 侯成义, 汪浩鹏, 汪志强, 柏宇苗, 李强, 张青红, 李耀刚, 王宏志. 石墨烯修饰的柔性多彩电热致变色薄膜的制备及性能研究[J]. 无机材料学报, 2018, 33(11): 1232-1236.

ZHANG Bin, HOU Cheng-Yi, WANG Hao-Peng, WANG Zhi-Qiang, BAI Yu-Miao, LI Qiang, ZHANG Qing-Hong, LI Yao-Gang, WANG Hong-Zhi. Preparation and Performance of Reduced Graphene Oxide Functionalized Flexible and Multicolor Electrothermal Chromatic Films[J]. Journal of Inorganic Materials, 2018, 33(11): 1232-1236.

图/表 8

图1 GO与RGO的XRD图谱(a)以及拉曼光谱图(b)

Fig. 1 XRD patterns (a) and Raman spectra (b) of GO and RGO

图2 柔性电热致变色薄膜结构示意图

Fig. 2 Schematic illustration of the flexible electrothermal chromatic films

图3 柔性导电薄膜的断面SEM(a)及数码照片(b)

Fig. 3 Cross-sectional SEM image (a) and photograph (b) of the flexible conductive film

图4 RGO的SEM照片

Fig. 4 SEM image of RGO

图5 在6 V电压下, 柔性电热致变色薄膜在一个周期内的颜色变化的数码照片

Fig. 5 Photographs of the flexible electrothermal chromatic film during a color-change cycle under an applied voltage of 6 V

图6 在6 V电压下, 柔性电热致变色薄膜在一个周期内的红外热成像图

Fig. 6 Thermal images of the flexible electrothermal chromatic film during a cycle under an applied voltage of 6 V

图7 柔性电热致变色薄膜在6 V电压下的温度时间曲线

Fig. 7 Temperature-time curves of the flexible electrothermal chromatic film under a current voltage of 6 V

图8 柔性电热致变色薄膜的吸收光谱(a)及响应时间(b)

Fig. 8 Absorbance spectra (a) and response time (b) of the flexible electrothermal chromatic film

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石墨烯修饰的柔性多彩电热致变色薄膜的制备及性能研究

Preparation and Performance of Reduced Graphene Oxide Functionalized Flexible and Multicolor Electrothermal Chromatic Films

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