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材料导报  2023, Vol. 37 Issue (5): 21070247-6    https://doi.org/10.11896/cldb.21070247
  高分子与聚合物基复合材料 |
基于PDMS的蘑菇状仿生黏附微阵列新型制造方法
赵泽芳, 何青松*, 张昊, 于敏, 陆吉, 田成博, 潘辉
南京航空航天大学机电学院,江苏省仿生功能材料重点实验室,南京 200016
Novel Fabrication Method of Mushroom-shaped Bioinspired Adhesive Microstructure Based on PDMS
ZHAO Zefang, HE Qingsong*, ZHANG Hao, YU Min, LU Ji, TIAN Chengbo, PAN Hui
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Jiangsu Key Laboratory of Bionic Functional Materials, Nanjing 200016
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摘要 受到自然界中壁虎和甲虫脚趾表面微纳纤毛结构的启发,本工作基于聚二甲基硅氧烷(PDMS)提出了一种表面具有蘑菇状微阵列的仿生干黏附材料制造方法,通过进给实验装置对传统支柱状仿生干黏附材料进行“蘸取”,实现了表面蘑菇状微阵列的制造。蘑菇状仿生干黏附材料单根纤维的黏附面积为1.12 ×10-3 mm2,最大切向黏附强度为2.65 N/cm2,法向黏附强度为5.18 N/cm2。与手工制造方式相比,黏附面积提升了33.74%,黏附强度最大分别提升了225%、280%。结合SEM图、光学显微图、黏附材料与黏附接触面的接触状态和黏着功进行黏附性能的理论分析。利用这一方法,蘑菇状仿生干黏附材料的黏着角减小,微阵列的末端直径、表面平整度、有效黏着功、黏附面积和柔顺性显著提升,材料能够更好地适应接触面,且具有较好的重复性,显著提高了材料的切向和法向黏附强度。本工作为蘑菇状仿生干黏附材料的制造提供了一种新思路。
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赵泽芳
何青松
张昊
于敏
陆吉
田成博
潘辉
关键词:  仿生  干黏附材料  蘑菇状微阵列  有效黏着功    
Abstract: Inspired by the micro-nano ciliary structures on the toes of geckos and beetles in nature, a kind of biomimetic dry adhesive with mushroom-shaped microarray composed of polydimethylsiloxane(PDMS)was “dipped” and fabricated by a feeding experimental device. The contact area of a single fiber of the mushroom-shaped bionic dry adhesive is 1.12×10-3 mm2, the maximum shear adhesion strength is up to 2.65 N/cm2, and the maximum normal adhesion strength is 5.18 N/cm2. Compared with manual manufacturing, the adhesion area increased by 33.74%, and the shear and normal adhesion strength increased by 225% and 280% respectively. Considering the SEM images, optical micrograph, adhesive state and adhesion work between adhesive and contact surface, the adhesion performance was conducted by theoretical analysis. By this method, the adhesion angle of the mushroom-shaped biomimetic dry adhesive was reduced, and the diameter, flatness, effective adhesion work, adhesion area, and flexibility of the microarray were significantly improved. The adhesive could better adapt to the contact surface with good repeatability and significantly improve the shear and normal adhesive strength. This work provides a novel idea for manufacturing mushroom-shaped biomimetic dry adhesive.
Key words:  biomimetic    dry adhesive    mushroom-shaped microarray    effective adhesion work
出版日期:  2023-03-10      发布日期:  2023-03-14
ZTFLH:  TH111  
基金资助: 国家自然科学基金(51605220; U1637101);中央高校基本科研业务费专项资金(NS2020029)
通讯作者:  *何青松,南京航空航天大学机电学院研究员。获南京航空航天大学机械设计及理论博士学位,主要研究兴趣为仿生智能驱动及机器人、生物微纳制造与系统、柔性传感与电子监测设备,在Composites Part A、《科学通报》等国内外重要期刊上共发表学术论文60余篇。heqingsong@nuaa.edu.cn   
作者简介:  赵泽芳,东北林业大学工程技术学院森林工程专业工学学士,南京航空航天大学机电学院机械工程专业硕士,主要从事仿生微纳米制造领域的研究。
引用本文:    
赵泽芳, 何青松, 张昊, 于敏, 陆吉, 田成博, 潘辉. 基于PDMS的蘑菇状仿生黏附微阵列新型制造方法[J]. 材料导报, 2023, 37(5): 21070247-6.
ZHAO Zefang, HE Qingsong, ZHANG Hao, YU Min, LU Ji, TIAN Chengbo, PAN Hui. Novel Fabrication Method of Mushroom-shaped Bioinspired Adhesive Microstructure Based on PDMS. Materials Reports, 2023, 37(5): 21070247-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21070247  或          http://www.mater-rep.com/CN/Y2023/V37/I5/21070247
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