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Preparation method of bionic gecko adhesive tape

A technology of adhesive tape and gecko, applied in the field of imitation gecko foot setae, can solve the problems of high cost, difficult demoulding, complicated operation, etc., and achieve the effect 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 in-situ electrochemical etching is a simple, convenient, low-cost, and parameter-controllable method. This method directly etches the prepared gecko foot microarrays on the copper sheet metal without removing the template, which solves the problem of The existing methods have problems of high cost, complicated operation, and difficult demoulding, and it is expected to realize industrial production

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

[0019] Specific implementation mode 1: This implementation mode prepares Cu(OH) according to the following steps 2 / PDMS composite imitation gecko foot microarray:

[0020] Step 1: Preparation of Cu(OH) by in-situ electrochemical etching 2 Microarray:

[0021] The electrochemical reaction cell for preparing CuO pine needle arrays by in-situ electrochemical etching method is a one-chamber electrolytic cell (see figure 1 ). The copper strip (11 cm × 11 cm) is the working electrode (WE), and the platinum electrode (area A ≈ 1.0 cm 2 ) is the counter electrode (CE), the saturated calomel electrode is the reference electrode (RE), and sodium hydroxide (NaOH) is the electrolyte. Before the experiment, argon gas was passed for about 20 min to remove the gas in the electrolyte. The control current density range is 0.1-10 mA / cm 2 And the electrolyte concentration range is 0.5-10mol / L, the reaction time range is 2-60min, and a layer of blue Cu(OH) is formed on the surface of the c...

specific Embodiment approach 2

[0025] Specific embodiment two: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0026] 1. Cu(OH) 2 Microarray preparation

[0027] The electrochemical reaction cell for preparing CuO pine needle arrays by in-situ etching method is a one-chamber electrolytic cell. The copper strip (1 cm×1 cm) is the working electrode (WE), and the platinum electrode (area A≈1.0 cm 2 ) is the counter electrode (CE), the saturated calomel electrode is the reference electrode (RE), and sodium hydroxide (NAOH) is the electrolyte. Before the experiment, the copper strip needs to be washed with acid, water and alcohol. The reaction tank was ventilated with argon gas for about 20 minutes to remove the gas in the electrolyte. Control the current density to 0.5mA / cm 2 And the electrolyte concentration is 1mol / L, the reaction time is 15min, and a layer of blue Cu(OH) is formed on the surface of the copper strip. 2 film. Take out the copper tape with the...

specific Embodiment approach 3

[0031] Specific embodiment three: this embodiment prepares imitation gecko foot microarray according to the following steps:

[0032] 1. Cu(OH) 2 Preparation of microarrays.

[0033] The electrochemical reaction cell for preparing CuO pine needle arrays by in-situ etching method is a one-chamber electrolytic cell. The copper strip (1 cm×1 cm) is the working electrode (WE), and the platinum electrode (area A≈1 cm 2 ) is the counter electrode (CE), the saturated calomel electrode is the reference electrode (RE), and sodium hydroxide (NAOH) is the electrolyte. Before the experiment, the copper strip needs to be washed with acid, water and alcohol. The reaction tank was ventilated with argon gas for about 20 minutes to remove the gas in the electrolyte. Control the current density to 1.3mA / cm 2 And the electrolyte concentration is 4mol / L, the reaction time is 15min, a layer of blue Cu(OH) is formed on the surface of the copper strip 2 film. Take out the copper tape with the...

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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 Cu(OH)2 microarray by using an anode method in an in-situ electrochemical etching mode; (2) dipping the prepared Cu(OH)2 microarray into a trichloromethane olution of PDMS (Polydimethylsiloxane), taking out and curing so as to obtain a Cu(OH)2 / PDMS composite microarray. The preparation method of the bionic gecko foot seta is simple to operate, controllable in experimental parameters and low in cost, and can be applied to preparation of a Cu(OH)2 bionic gecko foot microarray which is wrapped by elastic silica rubber. According to the Cu(OH)2 silica rubber elastomer composite microarray prepared by using an in-situ electrochemical etching with the combination of a dipping method, the area of the bionic gecko foot nano array is 0.1-5cm<2>, the diameter is 50nm to 10nm, and the height is 0.1-20 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): C09J7/02C09J183/04C25F3/02
Inventor 刘宇艳张恩爽王友善吕通谭惠丰
Owner HARBIN INST OF TECH
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