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Meanwhile, adhesion force and friction force are enhanced

A biomimetic composite structure and friction technology, applied in the field of biomimetic materials, can solve the problems of easy wear and damage, unfavorable strong friction, etc., and achieve the effects of improving applicability, realizing solid-solid contact, and facilitating deformation and bending.

Active Publication Date: 2020-06-26
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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  • Meanwhile, adhesion force and friction force are enhanced
  • Meanwhile, adhesion force and friction force are enhanced
  • Meanwhile, adhesion force and friction force are enhanced

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 with 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-nan...

Embodiment 2

[0046] Such as figure 2 with 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 reinfo...

Embodiment 3

[0059] Such as Figure 5 with 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 bionic composite structure capable of simultaneously enhancing adhesive force and friction force, which is characterized by comprising a support layer, the column array comprises columns which are formed on the supporting layer, arranged in an array mode and provided with soft elasticity; and the micro-nano reinforcements are all embedded in the column body, and the micro-nano reinforcements are nanowires or nanotubes or nanosheets. According to the invention, through the synergistic effect of the support layer, the anisotropic cylinder array and the nano reinforcement, the material has excellent adhesion performance, friction performance and wear resistance on a rough surface; furthermore, the porous support layer can effectively reduce the modulus of the supportlayer, is beneficial to deformation and bending, realizes better contact on a rough surface, and can absorb more energy in the debonding process, thereby being beneficial to realizing 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 Applications(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
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