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Surface with self-lubrication function and preparation method of surface

A self-wetting and functional technology, applied in the surface field with self-wetting function, can solve the problems of complex preparation methods, short transportation distance, slow transportation speed, etc., and achieve simple process, fast flow speed and low cost Effect

Active Publication Date: 2019-06-07
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the disadvantages of complicated preparation methods, slow transportation speed and short transportation distance in the current radially wetted structure, the present invention proposes a surface that can realize fast transportation speed and long transportation distance, and the preparation method is simple, Suitable for pumpless microfluidics, liquid transport and other fields

Method used

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  • Surface with self-lubrication function and preparation method of surface
  • Surface with self-lubrication function and preparation method of surface
  • Surface with self-lubrication function and preparation method of surface

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Embodiment Construction

[0031] The design and preparation method of the self-wetting shuttle structure described in this embodiment comprises the following steps:

[0032] 1) Establish the transport mechanism formula of the shuttle array structure, study the transport mechanism of various self-propelled microstructures in the past, and expand to the shuttle array microstructure according to the existing theoretical formula. The relationship between liquid displacement distance and velocity is obtained by using liquid surface energy and Laplace force; by studying the relationship between liquid wetting and liquid surface energy, a cone formula for liquid transport in a shuttle array is established. During liquid flow, the potential energy of the system is expressed as:

[0033] U=γ LV ·cosθ·(S 1 +S 2 )-γ LV ·S 3 (1)

[0034] where U is the potential energy of the system in the process of liquid diffusion, S 1 is the area of ​​the two walls of the channel, S 2 is the area of ​​the channel bott...

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Abstract

The invention discloses a surface with a self-lubrication function and a preparation method of the surface. The surface is provided with a plurality of long grooves. The long grooves are formed by continuously and repeatedly arranging a plurality of fusiform structural units. Each fusiform structural unit is provided with a wide middle part and two narrow end parts on a plane projection, wherein amain cone is formed by the middle part and one end part, and an auxiliary cone is formed by the middle part and the other end part. The surface is prepared through a light curing 3D printing technology. According to the self-lubrication function and the preparation method of the surface, a fusiform array structure is prepared through light curing 3D printing, advantages are obvious on sample design and manufacture, a die manufacturing process is omitted, the process is simple, the cost is relatively low, and the surface is suitable for being applied on a large scale; and by means of the prepared fusiform array structure, the liquid flowing speed in one direction is large, and the liquid flowing distance is long.

Description

technical field [0001] The invention belongs to the technical field of surface physics, in particular to a surface with self-wetting function and a preparation method thereof. Background technique [0002] Since liquid self-wetting surfaces can realize continuous spreading and transportation of liquids without external power, they have important application prospects in the fields of machinery, energy, medical care, agriculture, etc., and have attracted great attention at home and abroad. Generally speaking, the autonomous motion of liquid on the surface is driven by the imbalance of surface energy or capillary force imbalance caused by the structure, while the unidirectional motion is often due to gradient surface tension, gradient Laplace pressure or anisotropic Caused by heterosexual structure. The directional transport of liquids can be achieved by constructing inclined nanowire arrays or surface chemical wetting gradients, but these liquid transports have disadvantages...

Claims

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Application Information

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IPC IPC(8): B29C59/14B29C64/124B29C64/386B29C69/02B33Y10/00B33Y50/00
Inventor 吴化平王威蒋坤鹏梁利华
Owner ZHEJIANG UNIV OF TECH
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