Intelligent surface construction method capable of achieving wettability conversion and device therefor

A construction method and wettability technology, applied in the field of intelligent surface manufacturing, can solve the problems of complex preparation methods and chemical dependence, and achieve the effect of simple process

Active Publication Date: 2019-01-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at some defects existing in the existing smart surface with wettability conversion characteristics, such as chemical dependence and complicated preparation methods, the present invention provides a smart surface construction method that relies on microstructure regulation to realize wettability conversion and its used Device, this method uses magnetic particles to form a mushroom-shaped column array with reversible bending deformation characteristics on the surface through self-assembly, and uses fluorosilane to modify the surface to obtain a smart surface that relies on microstructure regulation to achieve wettability conversion

Method used

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  • Intelligent surface construction method capable of achieving wettability conversion and device therefor
  • Intelligent surface construction method capable of achieving wettability conversion and device therefor
  • Intelligent surface construction method capable of achieving wettability conversion and device therefor

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Embodiment 1

[0025] refer to figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, the device used in the method includes a substrate 2, an anti-adhesive flat plate 3, a magnet 4 and a liquid rubber and magnetic particle mixture 1, the substrate 2 is placed on the magnet 4, the anti-adhesive flat plate 3 is located above the substrate 2, and the substrate 2 is coated with There is a mixture 1 of liquid rubber and magnetic particles, and the mixture 1 of liquid rubber and magnetic particles is located between the substrate 2 and the anti-adhesive plate 3 .

[0026] 1) After mixing polydimethylsiloxane (PDMS) prepolymer (the mass ratio of main agent and curing agent is 20:1) and magnetic carbonyl iron particles with a particle size of 1-10 μm in a mass ratio of 1:0.6, The mixture 1 of liquid rubber and magnetic particles is formed, and the mixture 1 of liquid rubber and magnetic particles is scraped on a glass slide to form a film with a thickness of 70 μm.

[0027] 2) Fi...

Embodiment 2

[0030] refer to figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, the device used in the method includes a substrate 2, an anti-adhesive flat plate 3, a magnet 4 and a liquid rubber and magnetic particle mixture 1, the substrate 2 is placed on the magnet 4, the anti-adhesive flat plate 3 is located above the substrate 2, and the substrate 2 is coated with There is a mixture 1 of liquid rubber and magnetic particles, and the mixture 1 of liquid rubber and magnetic particles is located between the substrate 2 and the anti-adhesive plate 3 .

[0031] 1) After mixing polydimethylsiloxane (PDMS) prepolymer (the mass ratio of main agent and curing agent is 20:1) and magnetic carbonyl iron particles with a particle size of 1-10 μm in a mass ratio of 1:0.8, The mixture 1 of liquid rubber and magnetic particles is formed, and the mixture 1 of liquid rubber and magnetic particles is scraped on a glass slide to form a film with a thickness of 80 μm.

[0032] 2) Fi...

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Abstract

The invention discloses an intelligent surface construction method capable of achieving wettability conversion. Liquid rubber and magnetic microparticles are mixed in a certain ratio, and then coat asubstrate, and an anti-adhesion plate is fixed at a certain distance above the substrate. A vertical upward magnetic field is applied to the whole device from the bottom of the substrate, a mushroom column array structure is formed by liquid rubber self-assemble, after solidification molding, a microcolumn array is modified by fluorosilane to obtain an intelligence surface capable of achieving wettability conversion relying on microstructure control. By induction of the external magnetic field, the mushroom-like column array structure of the surface can be bent and deformed to lead reversibleconversion between a low-adhesion super-hydrophobic and oileophobic state and a high-adhesion hydrophobic oleophobic state of the wet state of water and oil on the surface. The preparation method hasthe advantages of simple process, no complicated equipment, and no template assistance, and is advantageous for large-scale manufacturing and practical application of the intelligence surface capableof achieving wettability conversion.

Description

technical field [0001] The invention belongs to the field of intelligent surface manufacturing, and in particular relates to an intelligent surface construction method capable of realizing wettability conversion and a device used therein. Background technique [0002] With the continuous development of smart technology, there is an increasing demand for smart surfaces with wettability switching functions. Smart surfaces with switchable wettability have important application potential in adhesion and friction regulation, liquid manipulation, controllable drug release systems, lab-on-a-chip devices, and biomimetic sensors. It can respond to external stimuli such as magnetic field, electric field, temperature, light, etc., and change the micro-nano structure or chemical composition of the surface, thereby realizing the conversion of surface wettability. But so far, most smart surfaces with switchable wettability rely on the change of chemical composition, and there are few rep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J5/18C08L83/04C08K3/18
CPCC08J5/18C08J7/12C08J2383/04C08K3/18
Inventor 张志辉王胡军马志超李秀娟赵杰崔振权罗诚邵艳龙任露泉
Owner JILIN UNIV
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