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PVC gel bio-inspired adhesives with variable modulus and its application in a gripper

PVC gel bio-inspired adhesives with variable modulus and its application in a gripper Inspired by the microstructure of gecko’s toe, two kinds of polyvinyl chloride (PVC) gels with different modulus were poured on a silicon mold with micropillars, and then a bio-inspired adhesive with variable modulus was manufactured in this study. The adhesions of variable modulus and fixed modulus bio-inspired adhesives were tested, respectively, on a smooth glass and a printed circuit board (PCB) with different surface structures. The results show that PVC gel bio-inspired adhesives with variable modulus have many advantages compared with the fixed modulus bio-inspired adhesives. The adhesion of variable modulus bio-inspired adhesives on the rough PCB surface increased by 2–5 times, and due to the use of variable modulus of PVC gel, the surface micropillars can maintain high aspect ratio and flexible tips at the same time. Moreover, the use of PVC gel makes it easier to demold during the bio-inspired adhesives preparation. An adhesion-desorption device was made according to the movement of the gecko toes, and the PCB was successfully grasped. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Central South University Springer Journals

PVC gel bio-inspired adhesives with variable modulus and its application in a gripper

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References (34)

Publisher
Springer Journals
Copyright
Copyright © Central South University 2022
ISSN
1005-9784
eISSN
2227-5223
DOI
10.1007/s11771-022-5050-5
Publisher site
See Article on Publisher Site

Abstract

Inspired by the microstructure of gecko’s toe, two kinds of polyvinyl chloride (PVC) gels with different modulus were poured on a silicon mold with micropillars, and then a bio-inspired adhesive with variable modulus was manufactured in this study. The adhesions of variable modulus and fixed modulus bio-inspired adhesives were tested, respectively, on a smooth glass and a printed circuit board (PCB) with different surface structures. The results show that PVC gel bio-inspired adhesives with variable modulus have many advantages compared with the fixed modulus bio-inspired adhesives. The adhesion of variable modulus bio-inspired adhesives on the rough PCB surface increased by 2–5 times, and due to the use of variable modulus of PVC gel, the surface micropillars can maintain high aspect ratio and flexible tips at the same time. Moreover, the use of PVC gel makes it easier to demold during the bio-inspired adhesives preparation. An adhesion-desorption device was made according to the movement of the gecko toes, and the PCB was successfully grasped.

Journal

Journal of Central South UniversitySpringer Journals

Published: Jun 1, 2022

Keywords: bio-inspired adhesives; gecko; PVC gel; variable modulus; 仿生黏附材料; 大壁虎; PVC 凝胶; 变模量

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