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电驱动碳黑/液态金属/液晶弹性体复合薄膜

周正峰 王猛

周正峰, 王猛. 电驱动碳黑/液态金属/液晶弹性体复合薄膜[J]. 功能高分子学报. doi: 10.14133/j.cnki.1008-9357.20211021001
引用本文: 周正峰, 王猛. 电驱动碳黑/液态金属/液晶弹性体复合薄膜[J]. 功能高分子学报. doi: 10.14133/j.cnki.1008-9357.20211021001
ZHOU Zhengfeng, WANG Meng. Electro-Driven Carbon Black/Liquid Metal/Liquid Crystal Elastomer Composite Film[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20211021001
Citation: ZHOU Zhengfeng, WANG Meng. Electro-Driven Carbon Black/Liquid Metal/Liquid Crystal Elastomer Composite Film[J]. Journal of Functional Polymers. doi: 10.14133/j.cnki.1008-9357.20211021001

电驱动碳黑/液态金属/液晶弹性体复合薄膜

doi: 10.14133/j.cnki.1008-9357.20211021001
基金项目: 国家自然科学基金项目(51903048, 52173109)
详细信息
    作者简介:

    周正峰(1997—),男,硕士生,主要研究方向为液晶高分子材料。E-mail:3232226441@qq.com

    通讯作者:

    王 猛,E-mail:wangm@seu.edu.cn

  • 中图分类号: O63

Electro-Driven Carbon Black/Liquid Metal/Liquid Crystal Elastomer Composite Film

  • 摘要: 利用导电填料碳黑(CB)嵌入液态金属/液晶弹性体(LM/LCE)复合薄膜中,通过二次交联法制备了类似于“三明治”结构的电刺激响应碳黑/液态金属/液晶弹性体(CB/LM/LCE)复合薄膜。通过傅里叶红外光谱、差示扫描量热、广角X射线衍射、扫描电子显微镜、万能拉伸试验仪和电驱动响应机制等对LM/LCE和CB/LM/LCE复合薄膜分别进行表征和分析。研究结果表明,LM/LCE和CB/LM/LCE复合薄膜具有优异的力学性能和电驱动收缩可逆形变性能,在80 V电压驱动下,可实现高效电热转换,最大收缩率达到45%;在负载50 g重物的情况下,依然可以实现可逆电致收缩形变,最大收缩率为42%。

     

  • 图  1  (a)RM257、EDDET、PETMP和DPA的化学结构式;(b)LM/LCE和(c)CB/LM/LCE复合薄膜的制备流程图

    Figure  1.  (a)Chemical structures of RM257, EDDET,PETMP and DPA; Preparation procedures of (b)LM/LCE and (c) CB/LM/LCE composite film

    图  2  样品的红外谱图

    Figure  2.  FT-IR spectra of samples

    图  3  LM/LCE薄膜的DSC曲线

    Figure  3.  DSC curves of LM/LCE film

    图  4  LM/LCE复合薄膜(a)升温和(b)降温过程的WAXS图;(c, d, e) LM/LCE复合薄膜的2 D-WAXS图

    Figure  4.  WAXS patterns of the LM/LCE film on (a) heating and (b) cooling; (c, d, e) 2D-WAXS patterns of the LM/LCE film

    图  5  (a)LM/LCE薄膜在不同w(LM)下的应力-应变曲线;(b)纯LCE和LM/LCE薄膜的应力-应变曲线

    Figure  5.  Stress-strain curves of (a) LM/LCE film with different liquid metals mass fraction; (b) Pure LCE film and LM/LCE film

    图  6  (a)LCE-LCE和(b)LM/LCE-LM/LCE双层薄膜的SEM截面形貌;CB/LM/LCE复合薄膜的(c)上层膜和(d)下层膜的SEM表面形貌;(e) CB/LM/LCE复合薄膜的SEM截面形貌;(f)中间CB层的SEM图

    Figure  6.  SEM images of cross-sectional areas of (a)LCE-LCE film and (b) LM/LCE-LM/LCE film; SEM imges of (c) upper surface and (d) lower surface of the CB/ LM/LCE film; SEM images of (e) CB/LM/LCE composite film cross-section and (f) CB layer

    图  7  CB/LM/LCE复合薄膜在80 V电压下的形变

    Figure  7.  Shrinking deformation of CB/LM/LCE composite film powered by an 80 V direct current supply

    图  8  CB/LM/LCE体复合薄膜(a)表面温度和(b)电驱动应变与时间关系

    Figure  8.  Time vs (a) temperature and (b) electric drive strain diagram of the CB/LM/LCE composite film

    图  9  CB/LM/LCE复合薄膜负载50 g重物在80 V电驱动前后的照片

    Figure  9.  Photos of the CB/LM/LCE composite film driven with a load of 50 g at 80 V voltage before and after

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出版历程
  • 收稿日期:  2021-10-21
  • 录用日期:  2021-12-06
  • 网络出版日期:  2021-12-14

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