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Biomimetic composite structure with enhanced adhesion and friction

A bionic composite structure and friction technology, applied in the field of bionic materials, can solve problems such as unfavorable strong friction, easy wear and damage

Active Publication Date: 2021-05-04
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In general, materials with low elastic modulus are good for better adhesion, but not good for strong friction due to easy wear and damage
Especially in real life, mostly rough surface conditions, it is a challenge to achieve materials with strong adhesion and friction at the same time

Method used

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  • Biomimetic composite structure with enhanced adhesion and friction
  • Biomimetic composite structure with enhanced adhesion and friction
  • Biomimetic composite structure with enhanced adhesion and friction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 and 2 As shown, the biomimetic composite structure 10 that enhances both adhesion and friction provided by this embodiment includes a support layer 11 , a column array 12 and a micro-nano reinforcement 13 .

[0034] The support layer 11 has a porous structure, and the holes are aligned vertically and horizontally, and each hole is circular with a diameter of about 20 microns. In this embodiment, the supporting layer 11 is made of silicon rubber material.

[0035] The pillar array 12 is formed on the supporting layer 11, and includes pillars 12a arranged in an array and having soft elasticity. In this embodiment, the cylinder array 12 is stacked in a square, and each cylinder 12a has a diameter of 50 microns and a height of 50 microns, and the axial direction of the cylinders 12a is perpendicular to the support layer 11, and the distance between adjacent cylinders 12a is 10. Micron, cylinder 12a adopts silicon rubber material.

[0036] The micro-nano...

Embodiment 2

[0046] Such as figure 2 and 3 As shown, the biomimetic composite structure 20 that enhances both adhesion and friction provided by this embodiment includes a support layer 21 , a column array 22 and a micro-nano reinforcement 23 .

[0047] The support layer 21 has a porous structure, and the holes are aligned vertically and horizontally, and each hole is circular with a diameter of about 20 microns. In this embodiment, the supporting layer 21 is made of silicon rubber.

[0048] The pillar array 22 is formed on the supporting layer 21, and includes pillars 22a arranged in an array and having soft elasticity. In this embodiment, the cylinder array 22 is stacked in a square, and each cylinder 22a has a diameter of 50 microns and a height of 50 microns, and the axial direction of the cylinders 22a is perpendicular to the support layer 21, and the distance between adjacent cylinders 22a is 10. Micron, cylinder 22a adopts silicon rubber material.

[0049] The micro-nano reinfor...

Embodiment 3

[0059] Such as Figure 5 and 6 As shown, the biomimetic composite structure 30 that enhances both adhesion and friction provided by this embodiment includes a support layer 31 , a column array 32 and a micro-nano reinforcement 33 .

[0060] The support layer 31 has a porous structure, and the pores are arranged randomly, and each hole is circular with a diameter of about 20 microns. In this embodiment, the supporting layer 31 is made of silicon rubber.

[0061] The post array 32 is formed on the support layer 31 and includes a plurality of soft elastic posts 32a arranged in an array. In this embodiment, the cylinder array 32 is stacked in a square, and each cylinder 32a has a diameter of 50 microns and a height of 50 microns, and the axial direction of the cylinders 32a is perpendicular to the support layer 31, and the distance between adjacent cylinders 32a is 10. Micron, cylinder 32a adopts silicon rubber material.

[0062] The micro-nano reinforcement 33 is embedded in ...

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Abstract

The invention provides a biomimetic composite structure that simultaneously enhances adhesion and friction, and is characterized in that it includes: a support layer; a pillar array, including pillars arranged in an array on the support layer and having soft elasticity; The nano-reinforcement body and the micro-nano reinforcement body are all embedded in the column, and the micro-nano reinforcement body is a nanowire, a nanotube or a nanosheet. In the present invention, the synergistic effect of the support layer, the anisotropic column array and the nano-reinforcement makes the material have excellent adhesion performance, friction performance and wear resistance on the rough surface; further, the porous support layer can effectively reduce the The modulus of the support layer is conducive to deformation bending, better contact on rough surfaces, and can absorb more energy during the debonding process, so it is conducive to achieving strong adhesion.

Description

technical field [0001] The invention belongs to the technical field of bionic materials, and in particular relates to a bionic composite structure that enhances adhesion and friction simultaneously. Background technique [0002] In the process of evolution, organisms have evolved their unique advantages in order to better adapt to the environment. Therefore, in recent years, researchers at home and abroad have used the characteristics of organisms to conduct a lot of research on structure, lubrication, superhydrophobicity, and friction. Corresponding biomimetic surface. For example, Yu Shuhong, academician of University of Science and Technology of China, successfully prepared millimeter-scale thick nacre structure block materials by simulating the growth mode and control process of nacre in molluscs. Academician Jiang Lei of Beihang University used the microstructure of lotus leaf surface to prepare In addition to the super-hydrophobic surface, Professor Chen Huawei of Bei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/00C08J9/00C08L83/04C08K3/04
CPCC08J5/005C08J9/0071C08J2383/04C08K2201/011C08K3/041
Inventor 薛龙建孟凡栋史哲坤谭迪汪鑫
Owner WUHAN UNIV