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光热自愈合超疏水膜的制备和防冰性能

刘黎明 陈盛龙 潘炜

刘黎明, 陈盛龙, 潘炜. 光热自愈合超疏水膜的制备和防冰性能[J]. 复合材料学报, 2024, 42(0): 1-12.
引用本文: 刘黎明, 陈盛龙, 潘炜. 光热自愈合超疏水膜的制备和防冰性能[J]. 复合材料学报, 2024, 42(0): 1-12.
LIU Liming, CHEN Shenglong, PAN Wei. Preparation and Anti-icing Performance of a Photothermal Self-Healing Superhydrophobic Membrane[J]. Acta Materiae Compositae Sinica.
Citation: LIU Liming, CHEN Shenglong, PAN Wei. Preparation and Anti-icing Performance of a Photothermal Self-Healing Superhydrophobic Membrane[J]. Acta Materiae Compositae Sinica.

光热自愈合超疏水膜的制备和防冰性能

基金项目: 广西青年科学基金项目(2023JJB160178);广西科技基地和人才专项项目(AE30100196);广西大学引进人才科研项目(A3010051020)
详细信息
    通讯作者:

    刘黎明,博士,助理教授,硕士生导师,研究方向为功能性超浸润表面 E-mail: llming@gxu.edu.cn

  • 中图分类号: TB34;O647;TB332

Preparation and Anti-icing Performance of a Photothermal Self-Healing Superhydrophobic Membrane

Funds: Youth Science Foundation of Guangxi Zhuang Autonomous Region (2023JJB160178) ; Specific Research Project of Guangxi for Research Bases and Talents (AE30100196); Research Project for Introduced Talents of Guangxi University (A3010051020)
  • 摘要: 针对柔性超疏水膜基材料在户外防冰应用中面临动态抗润湿能力、机械耐久性和因紫外线氧化引起的化学耐久性不足等问题。本文通过对石墨烯、TiO2和SiO2等纳米颗粒氟化修饰,并将修饰后的颗粒分布在热塑性聚氨酯(TPU)基质内,通过优化激光加工参数,制备了一种可大变形的光热自愈合超疏水膜(Photothermal self-healing superhydrophobic, PTHSHM)。本文研究了PTHSHM的动态抗润湿性、机械耐久性、防/除冰性能以及在物理/化学损伤下的愈合性能。PTHSHM在400%应变下,经1000次循环拉伸后表面水接触角不低于156.4°。同时,断裂后的PTHSHM在0.4 W/cm2红外光照射下8分钟后愈合效率达到97.6%。此外,在化学损伤-愈合方面,经过10次氧等离子刻蚀-修复循环后,其表面水接触角仍在(5±2)°和155°之间可逆转换。此外,在−15℃的环境下,PTHSHM表面延迟结冰时间为350 s,冰粘附强度低至55 kPa,20 μL冰滴在0.1 W/cm2的太阳光下的融化并滚落时间为77 s。综上,PTHSHM表现出良好的机械和化学耐久性,在延迟结冰时间和降低冻结粘附方面优势显著。

     

  • 图  1  光热自愈合超疏水膜(PTHSHM)制备流程示意图。其中,① 、②分别为TiO2/SiO2纳米粒子和石墨烯改性过程,③为复合薄膜(FM)预聚物制膜过程,④为激光加工过程

    Figure  1.  Schematic diagram of the photothermal self-healing superhydrophobic (PTHSHM) fabrication process. Here, ① and ② represent the TiO2/SiO2 nanoparticle and graphene modification processes, respectively, ③ is the pre-polymer film (FM) formation process, and ④ is the laser irradiation process

    图  2  (a)PTHSHM的SEM图,插图为对应的接触角图像;(b)在倾斜1°的PTHSHM表面上表征WSA(c)纯热塑性聚氨酯(TPU)、FM、PTHSHM的FTIR光谱;(d) FM和PTHSHM表面化学元素的EDS能谱分析

    Figure  2.  (a) SEM images of PTHSHM, with insets showing the corresponding contact angle images; (b) Characterization of WSA on the PTHSHM surface at a 1° tilt angle; (c) FTIR spectra of pure thermoplastic polyurethane (TPU), FM, and PTHSHM; (d) EDS elemental analysis of the chemical composition on the surfaces of FM and PTHSHM

    图  3  PTHSHM XPS全谱图

    Figure  3.  XPS survey spectra of PTHSHM

    图  4  PTHSHM的10、100、200、500和1000次循环拉伸应力-应变曲线,插图分别是第10个循环和第1000个循环中​的水接触角光学图像

    Figure  4.  The stress-strain curves of the PTHSHM after 10, 100, 200, 500, and 1000 stretching cycles, with insets showing the optical images of water contact angle during the 10 th and 1000 th cycles respectively

    图  5  不同超疏水膜在循环拉伸下的润湿性比较

    Figure  5.  Comparison of the wetting properties of different superhydrophobic membranes under stretching cycles

    图  6  PTHSHM在不同pH溶液中的接触角变化

    Figure  6.  Changes in Contact Angle of PTHSHM in Solutions with Different pH Values

    图  7  PTHSHM磨损距离与接触角变化

    Figure  7.  Wear Distance and Corresponding Contact Angle Changes of PTHSHM

    图  8  PTHSHM在400%应变下的自清洁测试

    Figure  8.  Schematic illustration and process of self-cleaning of PTHSHM at 400% strain

    图  9  (a)PTHSHM光热性能,(b)、(c)PTHSHM的断裂损伤和愈合过程及相应的SEM图,(b)中插图为局部放大图,(c1)(c2)插图为对应的接触角图像,(c3)为(c2)修复位置的高分辨图;(d)自修复机制图

    Figure  9.  (a) Photothermal Performance of PTHSHM, (b), (c) Fracture damage and healing process of PTHSHM and corresponding SEM images, with the inset in (b) being a zoomed-in view, the insets in (c1) and (c2) showing the corresponding contact angle images, and (c3) being a magnified view of the repaired area in (c2); (d) Self-healing mechanism image

    图  10  PTHSHM经0.4 W/cm2的红外辐照8分钟条件下的5个愈合周期中的愈合效率曲线

    Figure  10.  The healing efficiency curves of the PTHSHM during the 5 cycles of healing process that was carried out under the 0.4 W/cm2 IR irradiation for 8 min

    图  11  自修复效率与愈合时间的文献研究对比

    Figure  11.  Comparative literature study on self-healing efficiency and healing time

    图  12  O2等离子体刻蚀-加热循环的水接触角,插图为对应的水接触角图像

    Figure  12.  Water contact angles during O2 plasma etching- healing cycles, with insets showing the corresponding water contact angle images

    图  13  PTHSHM在-10℃和-16.5℃下的光热效应曲线

    Figure  13.  Photothermal effect curves of PTHSHM at -10°C and -16.5°C

    图  14  (a)铝、玻璃、I-PSHM、D-PSHM、H-PSHM表面的延迟结冰过程;(b)铝、玻璃、I-PSHM、D-PSHM、H-PSHM表面在-16.5℃下的冰粘附强度;(c)PTHSHM和铝的光热除冰性能比较

    Figure  14.  (a) Delayed icing process on the surface of aluminum, glass, I-PSHM, D-PSHM, and H-PSHM; (b) ice adhesion strength on the surfaces of aluminum, glass, I-PSHM, D-PSHM, and H-PSHM at -16.5°C; (c) comparison of the photothermal de-icing performance between PTHSHM and aluminum

    图  15  PTHSHM在除冰循环中的冰粘附强度与光热除冰时间变化图

    Figure  15.  Variation of ice adhesion strength and photothermal deicing time of PTHSHM during 10 cycles

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出版历程
  • 收稿日期:  2024-04-02
  • 修回日期:  2024-05-13
  • 录用日期:  2024-05-18
  • 网络出版日期:  2024-06-17

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