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In-situ self-growth forming method of curvature surface adhesion structure

A technology of surface adhesion and self-growth, applied in the field of bionic adhesion functional structure, can solve the problems of not reaching the contact effect, achieve the effect of improving contact and adhesion effect, improving processing efficiency, and simple process route

Active Publication Date: 2022-07-08
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] However, the above-mentioned method of bending and bonding the planar adhesion structure to achieve contact adhesion to the target curved surface does not achieve the best contact effect. Curved target surfaces would be an effective solution, while how to achieve curved growth of adherent structures is a challenging problem

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  • In-situ self-growth forming method of curvature surface adhesion structure
  • In-situ self-growth forming method of curvature surface adhesion structure
  • In-situ self-growth forming method of curvature surface adhesion structure

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Embodiment Construction

[0026] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] An in-situ self-growth forming method of a curved surface adhesion structure, taking a standard concave cylindrical curved target surface as an example, the forming polymer material is a thermosetting polymer, the electrode material is metal Au, and the low surface energy solution is Teflon ( PTFE) solution to describe, including the following steps:

[0028] 1) Selection and handling of the upper plate: refer to figure 1 , the upper plate is first selected with a radius of curvature R 1 The concave cylindrical lens 1 is obtained, and then a coating process such as evaporation or sputtering is used to first prepare a layer of 10nm-20nm first metal Cr bonding layer 3 on the curved target surface of the concave cylindrical lens 1, and then prepare a layer of The first Au electrode layer 4 of 20nm-100nm; finally, a dielectric layer 5 with a nanome...

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Abstract

An in-situ self-growth forming method of a curvature surface adhesion structure comprises the steps that firstly, an upper pole plate is prepared and treated, then, a lower pole plate and a forming polymer material are prepared and treated, conformal rheoforming of the adhesion structure is induced by an electric field, the upper pole plate makes contact with the lower pole plate through a dielectric support, an external direct-current power source is applied, and the adhesion structure is formed. Enabling the electric field force applied to the polymer film to overcome surface tension and viscous resistance to flow, growing an array microstructure according to the most unstable wavelength, after the array microstructure is in contact with the dielectric layer, generating an electrowetting phenomenon, and keeping a stable voltage until the array microstructure wets and flows into a mushroom shape with a brim; and finally, curing and demolding the polymer to obtain an adhesion structure which is conformal with the curved target surface of the upper pole plate. The contact and adhesion effects on the surface of a curved target are improved, the machining efficiency is improved, and the device can be applied to picking and attachment increasing of a humanoid dexterous hand, space grabbing, picking and transferring of precise curved devices and the like.

Description

technical field [0001] The invention belongs to the technical field of biomimetic adhesion functional structures in micro-nano engineering, in particular to an in-situ self-growth forming method of a curvature surface adhesion structure. Background technique [0002] Gecko has excellent climbing ability on any surface. The adhesion force required for stable crawling comes from the intermolecular force formed between the setae on the sole of the foot and the contact surface - van der Waals force. Compared with other adsorption methods, gecko bionic adhesion The structure has the advantages of no noise, reusability, good self-cleaning, and strong adaptability to materials and shapes. [0003] The "mushroom"-shaped adhesive structure with a brim has been proved to be the structure with the best adhesion performance among the micro-pillar arrays inspired by gecko. When attaching a curved target surface, only external force can be combined with a flexible substrate to achieve be...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00C03C17/38
CPCB29C67/00C03C17/001C03C17/38C03C2218/151C03C2218/154C03C2218/111B29C2791/004
Inventor 邵金友田洪淼姜元泽孟天浩李祥明陈小亮王春慧陈小明王铎睿张晋瑜
Owner XI AN JIAOTONG UNIV