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Surface preparation method with liquid wetting property control functions

A wetting performance and liquid technology, which is applied in the field of surface preparation with controllable liquid wetting performance, can solve complex repeated regulation, is not suitable for the research and regulation of wettability of microfluidic systems, and cannot have multiple regulation methods at the same time and other issues, to achieve the effect of obvious regulation and easy realization

Inactive Publication Date: 2017-09-12
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The shortcomings of the existing technology are: it is more complicated to realize repeated regulation, and it cannot have multiple regulation methods at the same time, so it is not suitable for the research and regulation of the wettability of microfluidic systems in the future

Method used

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  • Surface preparation method with liquid wetting property control functions
  • Surface preparation method with liquid wetting property control functions

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Embodiment Construction

[0020] Further illustrate the present invention below in conjunction with accompanying drawing.

[0021] Refer to attached picture. This embodiment includes the following steps: Step (1) Prepare the coating solution: mix and stir the polydimethylsiloxane prepolymer and the crosslinking agent at a mass ratio of 10:1, and then place it in a vacuum drying oven Use a vacuum pump to draw for 20 minutes to remove the bubbles in the solution to prepare a coating solution of polydimethylsiloxane;

[0022] Step (2) Prepare the mask: take a silicon template with a length of 50mm, a width of 25mm, and a thickness of 1mm, and use a three-dimensional drawing software to draw the layout of the groove structure. The unit groove array, the width of the unit groove is 10µm, the depth is 40µm, and the distance between the grooves is 10µm; then, referring to the drawn groove structure layout diagram, the silicon template is processed; the selected substrate is glass Substrate 4, and pre-clean ...

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Abstract

The invention discloses a surface preparation method with liquid wetting property control functions. The surface preparation method includes steps of (1), preparing polydimethylsiloxane coating liquid; (2), preparing mask plates; (3), rotationally coating the coating liquid; (4), preparing flexible wavy structures; (5), regulating and controlling wetting properties. The surface preparation method has the advantages that the wetting properties can be controlled by means of simple dynamics control; tensile strain of substrates VHB can be controlled at the step (4), and accordingly the amplitude and the frequencies of wavy surfaces can be controlled; in-situ tensile regulation and control can be carried out on the wavy surfaces, and accordingly the wetting properties can be changed.

Description

technical field [0001] The invention belongs to the field of material surface modification, in particular to a surface preparation method with controllable liquid wettability. Background technique [0002] Wettability is one of the inherent properties of solid surfaces, which is mainly related to two factors: the chemical properties of the solid surface and the microscopic geometry of the surface. The regulation of wettability refers to the reversible change of wetting properties under the stimulation of external conditions. Under the prior art, the external conditions that cause reversible changes in wetting properties mainly include mechanical methods, optical methods, electric field methods, thermal and chemical methods, and the like. [0003] For example, Professor Lei Sheng and others published a paper entitled "Reversible wettability between superhydrophobicity and superhydrophilicity of Ag" published in SCIENCE CHINA Materials, Volume 59, Issue 5. surface), which re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L83/04
CPCC08J5/18C08J2383/04
Inventor 吴化平杨哲徐振雄梁利华刘爱萍鲁聪达丁浩张征李吉泉曹彬彬
Owner ZHEJIANG UNIV OF TECH