Method and test device for mechanically controlling object surface/interface adhesion strength

A technology of interface adhesion and test device, applied in the direction of using mechanical devices, measuring devices, viscosity control, etc., can solve the problems of high pre-pressure, poor versatility, and no benefit to human beings.

Active Publication Date: 2020-03-06
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although significant progress has been made in improving adhesive strength, adhesive switching, reversibility, and durability, it is noted that most biomimetic artificial tables/interfaces are characterized by high complexity, poor versatility, and low cost-effectiveness. / interface does not benefit humanity very well
For example, reports have shown that the adhesion strength of artificial layered adhesion systems is as high as 200kPa, which is higher than that of nature (the adhesion strength of gecko feet is 100kPa), but it usually requires the prefabrication of complex surface/interface microstructures and the application of high pre-treatment. pressure
In addition, the surface/interface microstructure is susc...

Method used

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  • Method and test device for mechanically controlling object surface/interface adhesion strength
  • Method and test device for mechanically controlling object surface/interface adhesion strength
  • Method and test device for mechanically controlling object surface/interface adhesion strength

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] A method of mechanically regulating the surface / interface adhesion strength of an object. On the premise of not relying on the microstructure of the object surface, the surfaces of two sticky objects are brought into contact to form a contact pair (such as figure 1 The surfaces of object 1 and object 2 are in contact together to form a contact pair), and the two objects in the contact pair are excited to perform relative mechanical vibration, so that the contact area of ​​the contact pair changes with time, and the object is regulated by changing the excitation frequency or amplitude Surface / interface adhesion strength.

[0025] The definition of adhesion strength includes not only the real strength—the ratio of the interface contact force to the real contact area, but also the apparent strength—the interface contact force and a certain character...

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Abstract

The invention discloses a method and test device for mechanically controlling the object surface/interface adhesion strength. According to the method in the invention, on the premise of being independent of an object surface micro-structure, two object surfaces having the adhesion effect are contacted together, so that a contact pair is formed; two objects of the contact pair are stimulated to perform relative mechanical vibration; therefore, the contact area of the contact pair changes over time; and the object surface/interface adhesion strength is controlled by changing the excitation frequency or the amplitude. The method is simple to implement and high in controllability; the method is independent of the surface/interface micro-structure, and has universality; the adhesion strength control effect is obvious; and the fact that the contact interface adhesion strength is greatly increased or decreased can be realized.

Description

technical field [0001] The invention relates to a method and a test device for mechanically regulating the surface / interface adhesion strength of an object. Background technique [0002] Adhesion is one of the most common phenomena in nature, and its performance has been continuously optimized in the long-term biological evolution. For example, the hierarchical structure on the feet of geckos, beetles, and tree frogs not only shows strong adhesion-detachment properties, but also has strong environmental adaptability, stability, and durability. In human life, adhesion is also widely used in various fields, such as band-aids, tapes, and the contact between various materials, and even small molecules in human blood adhere to the blood vessel wall to heal wounds. The excellent functional properties in these biological systems have inspired a lot of biomimetic biosurface / interface design adhesion system research. The artificial formation and regulation of high-performance surfa...

Claims

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Application Information

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IPC IPC(8): G01N19/00G05D24/02
CPCG01N19/00G05D24/02
Inventor 税朗泉刘泽韩国幸
Owner WUHAN UNIV
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