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Preparation method of gecko structure simulating adhesive

A structural adhesive and gecko-like technology, applied in the field of preparation of gecko-like microarrays, can solve the problems of easy collapse and adhesion, high cost, and achieve the effects of simple operation and controllable experimental parameters.

Inactive Publication Date: 2013-09-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of preparation method of imitation gecko structural adhesive, adopt hydrogen bubble template method to prepare porous metal film as template, hydrogen bubble template method is a kind of simple, convenient, low cost, parameter controllable method, The imitation gecko foot microarray template prepared by this method is easy to remove and can form a hierarchical microstructure, which solves the problems of high cost and easy collapse and adhesion of the above method, and is expected to realize industrial production

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  • Preparation method of gecko structure simulating adhesive

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specific Embodiment approach 1

[0021] Specific embodiment one: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0022] The first step, hydrogen bubble template method to prepare porous metal film ( figure 1 )

[0023] Electrodeposition of porous Ni thin films by hydrogen bubble template method is based on platinum sheet (1cm 2 ) as the anode, and the counter electrode is made of 304 stainless steel (1cm 2 ) is the cathode. The pretreatment of stainless steel in the experiment includes polishing, degreasing, acid etching, water washing, ethanol immersion, acetone cleaning, low temperature blast drying, and sticking tape on the back of the stainless steel. The composition of the plating solution is 0.02-0.2mol L -1 NiCl 2 and 0.5-2mol L -1 NH 4 Cl, pH is controlled within the range of 4.0±0.5, and the current density range of electrodeposition is 1.0-6.0 A cm -2 , the deposition time is 10-40s. The structure and morphology of the porous Ni film were cons...

specific Embodiment approach 2

[0032] Specific embodiment two: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0033] 1. Electrodeposition of porous Ni film by hydrogen bubble template method:

[0034] Platinum sheet (1cm 2 ) as the anode, and the counter electrode is made of 304 stainless steel (1cm 2 ) is the cathode. The pretreatment of stainless steel in the experiment includes polishing, degreasing, acid etching, water washing, ethanol immersion, acetone cleaning, low temperature blast drying, and sticking tape on the back of the stainless steel. The composition of the plating solution is 0.1mol L -1 NiCl 2 and 1mol L -1 NH 4 Cl, pH is controlled within the range of 4.0±0.5, and the current density range of electrodeposition is 3A cm -2 , the deposition time is 20s. The deposited thin film should be immediately rinsed with distilled water, soaked in absolute ethanol and then dried to obtain a porous metallic Ni template.

[0035] Such as Figure...

specific Embodiment approach 3

[0041] Specific embodiment three: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0042] 1. Electrodeposition of porous Cu films by hydrogen bubble template method:

[0043] Platinum sheet (1cm 2 ) as the anode, and the counter electrode is made of 304 stainless steel (1cm 2 ) is the cathode. The pretreatment of stainless steel in the experiment includes polishing, degreasing, acid etching, water washing, ethanol immersion, acetone cleaning, low temperature blast drying, and sticking tape on the back of the stainless steel. The composition of the plating solution is 0.05mol L -1 CuSO 4 and 1mol L -1 h 2 SO 4 , the pH is controlled within the range of 4.0±0.5, and the current density range of electrodeposition is 3A cm -2 , the deposition time is 10s. The deposited thin film should be immediately rinsed with distilled water, soaked in absolute ethanol and then dried to obtain a porous metal Cu template.

[0044] Such as ...

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Abstract

The invention discloses a preparation method of a gecko structure simulating adhesive and relates to a preparation method of a gecko foot simulating microarray. The preparation method of the gecko structure simulating adhesive, disclosed by the invention comprises the following steps of: (1) preparing a porous metal film by using a hydrogen bubble template method; (2) mixing a high polymer with a cross-linking agent, vacuumizing, pouring the mixed liquor on a template of the porous metal plate for curing; and (3) removing a base and the porous metal template by using chemical and electrochemical methods. The preparation method disclosed by the invention is easy to operate and needs no complex instruments; experiment parameters are controllable; and a prepared gecko foot simulating microarray structure has very high adsorption capacity, also can be easily separated from the absorptive surface and simultaneously has super-hydrophobicity and self-cleaning capability. For the gecko foot simulating microarray prepared by using the hydrogen bubble template method and taking porous metal as a template, the area is 0.1-5 square centimeters, the diameter is 0.5-100 micrometers, the height is 0.5-20 micrometers, the elasticity modulus of a material is 1-15GPa, and the shear strength is 1-150kPa.

Description

technical field [0001] The invention relates to a preparation method of a gecko foot imitation microarray. Background technique [0002] Today, when bionics has attracted much attention, the special properties of some animals have surprised people, such as geckos, mosquitoes, flies and other super-absorbing and desorbing abilities. Study the structure and force mechanism of gecko feet, learn from the adhesion mechanism of its feet, and manufacture gecko-like microstructure materials, and the gecko-like robots developed on this basis are of great value in many fields such as fault detection, emergency rescue and disaster relief, and military reconnaissance. . [0003] Geckos can easily crawl on smooth surfaces at a speed of 1m / s. After people continue to explore the structure of the gecko's feet, it has been observed that the gecko's feet are composed of millions of micron-sized protein bristles, and each bristle is composed of hundreds of nano-hairs. The adhesion of the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00C09J179/08C09J175/04C09J183/04C09J123/12C09J125/06C09J11/06
Inventor 刘宇艳张恩爽吕通吴松全谭惠丰
Owner HARBIN INST OF TECH
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