疏水可拉伸碳纳米管<strong>/</strong>聚二甲基硅氧烷复合薄膜的性能

doi:10.11901/1005.3093.2020.445

材料研究学报

2021, Vol. 35

Issue (10): 795-800 DOI: 10.11901/1005.3093.2020.445

研究论文

本期目录 | 过刊浏览

疏水可拉伸碳纳米管/聚二甲基硅氧烷复合薄膜的性能

杨亚威, 常书龙, 上媛媛(

)

郑州大学物理学院郑州 450052

Performance of Hydrophobic Stretchable Carbon Nanotubes/Polydimethylsiloxane Composite Films

YANG Yawei, CHANG Shulong, SHANG Yuanyuan(

)

School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China

引用本文:

杨亚威, 常书龙, 上媛媛. 疏水可拉伸碳纳米管/聚二甲基硅氧烷复合薄膜的性能[J]. 材料研究学报, 2021, 35(10): 795-800.
Yawei YANG, Shulong CHANG, Yuanyuan SHANG. Performance of Hydrophobic Stretchable Carbon Nanotubes/Polydimethylsiloxane Composite Films[J]. Chinese Journal of Materials Research, 2021, 35(10): 795-800.

全文: PDF(1844 KB) HTML

摘要:

基于化学气相沉积制备三维多孔多壁碳纳米管(MWNTs)海绵，在其内均匀填充聚二甲基硅氧烷(PDMS)制备出碳纳米管/聚二甲基硅氧烷复合薄膜。复合PDMS的碳纳米管海绵保持着自身的三维结构，成为导电网络和力学骨架；均匀填充的PDMS使复合薄膜具有较高的拉伸性能。碳纳米管与聚二甲基硅氧烷之间的协同作用，使MWNTs/PDMS复合薄膜具有良好的力学强度(3.7 MPa)、拉伸性(207%)和弹性。MWNTs/PDMS复合薄膜对应变有稳定可靠的响应，应变为10%、20%、50%、80%和100%时电阻变化率(△R/R₀)分别为0.9%、1.4%、2.3%、3.5%和4.6%，灵敏因子(GF)为别为0.09、0.07、0.046、0.044和0.046。MWNTs/PDMS复合薄膜的性能具有良好的稳定性，不受拉伸速度和循环次数影响。同时，MWNTs/PDMS复合薄膜还保持了碳纳米管和PDMS的疏水能力。

关键词 ：材料表面与界面, 多壁碳纳米管海绵, 聚二甲基硅氧烷, 疏水性

Abstract：

Three-dimensional porous multi-wall carbon nanotubes (MWNTs) sponges were prepared by chemical vapor deposition, and then which were filled with polydimethylsiloxane (PDMS). Carbon nanotubes sponges still maintain the three-dimensional structure after filled with PDMS, which provided a conductive network and mechanical framework. The uniformly filled PDMS makes the composite film stretchable and elastic. The synergistic effect between carbon nanotubes and polydimethylsiloxane resulted in high mechanical strength (3.7 MPa), stretchability (207%) and superior elasticity of MWNTs/PDMS composite films. The MWNTs/PDMS film presents the resistance change (△R/R₀) of 0.9%, 1.4%, 2.3%, 3.5% and 4.6%, and gage factor change (GF) of 0.09, 0.07, 0.046, 0.044 and 0.046 when subjected to strain of 10%, 20%, 50%, 80% and 100%, respectively. The sensing performance has a good stability which cannot be influenced by stretching speed and cycle numbers. In addition, the MWNTs/PDMS composite films inherited the hydrophobicity of MWNTs sponges and PDMS.

Key words： surface and interface in the materials multi-wall carbon nanotubes (MWNT) sponges polydimethylsiloxane (PDMS) strain sensor hydrophobicity

收稿日期: 2020-10-26

ZTFLH:

TP212.1

基金资助:国家自然科学基金(51872267)

作者简介: 杨亚威，男，1993年生，博士

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.445 或 https://www.cjmr.org/CN/Y2021/V35/I10/795

图1 制备MWNTs/PDMS复合薄膜的示意图

图2 MWNTs海绵和MWNTs/PDMS复合薄膜的扫描电镜照片

图3 MWNTs海绵、PDMS薄膜和MWNTs/PDMS复合薄膜在拉断过程中的应力应变曲线和MWNTs/PDMS复合薄膜应变为50%、100%和200%的循环应力应变曲线

图4 应变为10%、20%、50%、80%、100%条件下MWNTs/PDMS复合薄膜电阻的变化，应变为50%、拉伸速度分别为20 mm/min、40 mm/min、60 mm/min、80 mm/min和100 mm/min条件下MWNTs/PDMS复合薄膜电阻的变化以及MWNTs/PDMS复合薄膜应变为50%循环200圈电阻的变化

图5 MWNTs海绵、PDMS薄膜和MWNTs/PDMS复合薄膜的润湿角、MWNTs/PDMS复合薄膜浸泡液体及取出后的照片以及滴加人造汗液后MWNTs/PDMS复合薄膜电阻的变化

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