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Preparation method of bionic gecko adhesive tape

A technology of tape and gecko, applied in the field of preparation of imitation gecko foot bristles, can solve the problems of high cost, difficult demoulding, complicated operation, etc., and achieve the effects of low cost, simple operation and controllable experimental parameters.

Inactive Publication Date: 2014-02-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of microarrays by solution chemistry is a simple, convenient, low-cost (no need to use large-scale equipment), and parameter-controllable method. The imitation gecko foot microarray prepared by this method directly grows on metal Ni sheet metal without removing the template. The problems of high cost, complicated operation and difficult demoulding of the existing methods are solved, and industrial production is expected to be realized

Method used

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  • Preparation method of bionic gecko adhesive tape
  • Preparation method of bionic gecko adhesive tape
  • Preparation method of bionic gecko adhesive tape

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specific Embodiment approach 1

[0028] Specific embodiment 1: In this embodiment, ZnO / PDMS composite imitation gecko foot microarray is prepared according to the following steps:

[0029] Step 1. Preparation of ZnO microarrays by solution chemistry

[0030] The Ni metal sheet was polished, ultrasonically cleaned with absolute ethanol and distilled water, and dried in an oven at 300 °C. Suspend the dried metal sheet in 50-1000mL by 0.02-0.5M Zn (NO 3 ) 2 and 0.5-3M NH 3 ·H 2 In the mixed solution prepared by O, react at 50-100°C for 10-30h. During the reaction, keep stirring the solution slightly. The metal sheet in the solution is taken out, rinsed with water repeatedly, and dried to obtain a ZnO one-dimensional nano-array.

[0031] Step 2. Preparation of ZnO / PDMS composite microarray

[0032] Immerse the ZnO array in the above steps in a chloroform solution of 0.01-10% (w / w) polydimethylsiloxane (PDMS), take it out after 0.2-2h, and store it at a temperature of 50-100°C Curing 1-24h.

specific Embodiment approach 2

[0033] Specific embodiment two: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0034] Step 1. Preparation of ZnO microarrays by solution chemistry

[0035] The Ni metal sheet was polished, ultrasonically cleaned with absolute ethanol and distilled water, and dried in an oven at 300 ° C, and prepared with 45 mM Zn (NO 3 ) 2 and 0.1M NH 3 ·H 2 O mixed solution 300mL. Suspend the dried metal pieces in the solution and react at 60°C for 6 hours. During the reaction, the solution is constantly stirred slightly. The metal sheet in the solution is taken out, rinsed with water repeatedly, and dried to obtain a ZnO one-dimensional nano-array.

[0036] Step 2. Preparation of ZnO / PDMS composite microarray

[0037] The ZnO array in the above steps was immersed in a 2% (w / w) polydimethylsiloxane (PDMS) chloroform solution, taken out after 0.5h, and cured at a temperature of 90°C for 1h.

[0038] The small area of ​​the imitation gecko foot...

specific Embodiment approach 3

[0039] Specific embodiment three: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0040] Step 1. Preparation of ZnO microarrays by solution chemistry

[0041] The Ni metal sheet was polished, ultrasonically cleaned with absolute ethanol and distilled water, and dried in an oven at 300°C, and prepared with 0.1M Zn (NO 3 ) 2 and 1.2M NH 3 ·H 2 O mixed solution 300mL. Suspend the dried metal pieces in the solution and react at 70°C for 24 hours. During the reaction, the solution is constantly stirred slightly. The metal sheet in the solution is taken out, rinsed with water repeatedly, and dried to obtain a ZnO one-dimensional nano-array.

[0042] Step 2. Preparation of ZnO / PDMS composite microarray

[0043] The ZnO array in the above steps was immersed in a 2% (w / w) polydimethylsiloxane (PDMS) chloroform solution, taken out after 0.2-2h, and cured at a temperature of 90°C for 1h.

[0044] The small area of ​​the imitation ge...

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Abstract

The invention discloses a preparation method of a bionic gecko composite microarray, and relates to a preparation method of bionic gecko foot seta. The preparation method of the bionic gecko structure composite microarray comprises the following steps: (1) preparing a Zno microarray and a ZnO / C microarray by using a solution chemical method; (2) dipping the prepared Zno microarray and the ZnO / C microarray into a trichloromethane solution of PDMS (Polydimethylsiloxane), taking out and curing so as to obtain a ZnO / PDMS composite microarray and a Zno / C / PDMS composite microarray. The preparation method disclosed by the invention is simple to operate, controllable in experimental parameters and low in cost, and can be applied to preparation of a ZnO bionic gecko foot microarray and a ZnO / C bionic gecko foot microarray which are wrapped by elastic silica rubber, the two composite microarrays have high adsorption capabilities, can be easily dissociated from adsorption surfaces, and have super-hydrophobicity and self-cleaning capabilities. The area of the bionic gecko foot nano array prepared by using the preparation method is 0.1-5cm<2>, the diameter is 10nm to 500nm, and the height is 0.1-10 micrometers.

Description

technical field [0001] The invention relates to a preparation method of imitation gecko foot bristles. Background technique [0002] The excellent physiological functions of many animals have attracted the attention of scientists from all walks of life for centuries. For example, mosquitoes can easily adhere to human skin to bite; dung beetles living in a sticky and moist soil environment have excellent anti-adhesion functions; The smooth glass comes and goes freely. The common feature of the above-mentioned animals is that they all have a seta structure, and the difference in the architecture of the seta groups leads to the diversification of their functions. Among them, the kung fu on the gecko's feet is particularly amazing. Whether it is in the air environment, in the water or in a vacuum environment, the adhesion on its feet will not fail. Wall-climbing robots have a wide range of uses in civil, military, and aerospace applications, so they have attracted more and mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J183/04C23C18/00
Inventor 刘宇艳张恩爽吴松全吕通谭惠丰
Owner HARBIN INST OF TECH
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