A Dry Adhesive Composite Structure Based on Pneumatic Actuation and Its Manufacturing Process

Abstract

A dry-adhesive composite structure and manufacturing process based on gas actuation. The top layer of the composite structure is a mushroom-shaped array structure, and the bottom layer is a gas valve plate with a periodic array structure. The gas valve plate and the mushroom-shaped array structure are passed through a layer of low surface energy. The material is bonded into a whole, and the through hole of the valve plate is connected with the air compressor; the manufacturing process is to first prepare the mushroom-shaped array structure on the top layer, then manufacture the valve plate on the bottom layer, and finally carry out the coupling molding of the composite structure. A composite structure based on gas actuation is obtained, and the composite structure of the present invention realizes the organic unity of high-strength adhesion and controllable desorption.

Description

technical field [0001] The invention belongs to the technical field of dry-adhesive composite structures in micro-nano engineering, and in particular relates to a gas-actuated dry-adhesive composite structure and a manufacturing process thereof. Background technique [0002] The current adhesion methods mainly include: dry adhesion, wet adhesion, and traditional vacuum adsorption, mechanical meshing, electrostatic adsorption or magnetic adsorption and other adhesion methods. Compared with traditional vacuum adsorption, mechanical meshing, electrostatic adsorption or magnetic adsorption and other adhesion methods, dry adhesion does not depend too much on the surface morphology of the adhered surface material, and has strong adhesion, good stability, and strong impact on materials. It has the characteristics of strong adaptability to shape and shape, and will not cause damage and pollution to the surface of the contact object. It has unique advantages in simple structure, cont...

AI Technical Summary

Problems solved by technology

Del Campo et al. from the Max Planck Research Institute in Germany found that the mushroom-like structure can achieve high-strength adhesion properties. However, due to the symmetry of the shape, the mushroom-like array structure exhibits isotropic equivalent adhesion strength and cannot achieve effective and controllable adhesion. Desorption; Anisotropic methods based on tilted microstructure arrays and triangular micropillar arrays studied by Professor Mentin Sitti of Carnegie Mellon University, Professor Jacob N.Israelachvili of University of California, Santa Barbara, Professor Suh of Seoul National University, etc. Microstructured functional surfaces that enable controlled desorption of dry-adhesive surfaces, however at the expense of adhesion strength

Therefore, how to achieve the organic unity of high-strength adhesion and controllable desorption on the surface of dry adhesion function is the current difficulty and challenge in the direction of dry adhesion structure design and process manufacturing.

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