Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Super-hydrophobic surface with self-driven water collection function and preparation method thereof

A super-hydrophobic surface, self-driven technology, applied to special surfaces, pre-treated surfaces, devices for coating liquids on surfaces, etc., can solve problems such as small scope of application, difficulty in large-scale production, and disordered surface structures. To achieve the effect of improving water collection effect

Active Publication Date: 2021-01-19
WUHAN TEXTILE UNIV
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the surface structure prepared by chemical etching method is disordered, and this method has certain requirements for etching the substrate, so the scope of application is small; although the surface prepared by photolithography and plasma beam irradiation has a highly ordered structure and high performance Excellent, but this type of method is inefficient, expensive equipment, high cost, and difficult to achieve large-scale production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Super-hydrophobic surface with self-driven water collection function and preparation method thereof
  • Super-hydrophobic surface with self-driven water collection function and preparation method thereof
  • Super-hydrophobic surface with self-driven water collection function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038]The present invention also provides a method for preparing the above-mentioned superhydrophobic surface with self-driven water collection function, comprising the following steps:

[0039] S1. Assembling the colloidal microspheres on the surface of the base material into a single-layer microsphere array structure to obtain a single-layer microsphere template;

[0040] S2. Coating a suspension containing magnetic nanoparticles on the surface of the single-layer microsphere template obtained in step S1 by using a spin coating method or a pulling method, so that the magnetic nanoparticles are filled in the single-layer microsphere array In the gap of , the binary assembly template is obtained;

[0041] S3, spraying the resin on the surface of the binary assembly template obtained in step S2, and applying a magnetic field during the spraying process, so that the magnetic nanoparticles drive the resin to grow in a gradient direction to form a columnar microarray structure;

...

Embodiment 1

[0050] This embodiment provides a method for preparing a superhydrophobic surface with a self-driven water collection function, comprising the following steps:

[0051] S1. Preparation of monolayer microsphere template

[0052] Prepare the polydimethylsiloxane used as the base material first: put the mixture of polydimethylsiloxane prepolymer and curing agent in a vacuum oven to remove air bubbles, then slowly pour it on the substrate, and Place in a drying oven at 80° C. for 2 hours to cure, so that polydimethylsiloxane, a flexible base material, is formed on the surface of the substrate.

[0053] Then use the friction assembly method to sprinkle silicon dioxide powder with a particle size of 10 μm on the surface of the base material polydimethylsiloxane, and use another polydimethylsiloxane block to rub the silicon dioxide powder in one direction , so that silicon dioxide is densely packed on the surface of the base material to form a single-layer silicon dioxide microspher...

Embodiment 2～3

[0067] Examples 2-3 respectively provide a method for preparing a superhydrophobic surface with a self-driven water collection function. Compared with Example 1, the difference is that the particle size of the silica powder in step S1 is changed. The particle diameters of the silicon dioxide powders used in Example 2 and Example 3 are 5 μm and 20 μm respectively, and the rest of the steps and parameters are the same as in Example 1, and will not be repeated here.

[0068] After testing, the superhydrophobic surfaces prepared in Example 2 and Example 3 all have the function of self-driven water collection, and the order of water collection efficiency among the various examples is Example 2>Example 1>Example 3, indicating that the single The particle size of the microspheres in the layered microsphere template can affect the water collection efficiency, and the smaller the particle size, the more obvious the water collection effect. The main reason is that the spacing in the col...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heightaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a super-hydrophobic surface with a self-driven water collection function and a preparation method thereof. According to the preparation method, microspheres with micron sizes are assembled into a single-layer microsphere array, gaps of the single-layer microsphere array are filled with magnetic nanoparticles, and a binary assembly template is formed; under the action of an external magnetic field, resin is sprayed on the surface of the binary assembly template, so that the resin mixed with the magnetic nanoparticles directionally grows into columnar microarray structures; and lubricating liquid is infiltrated into gaps of the columnar microarray structures, and the super-hydrophobic surface with the self-driven water collection function is formed. By means of the mode, the magnetic nanoparticles can be regularly arranged by utilizing the single-layer microsphere array, so that the resin is driven to directionally grow into the columnar microarray structures whichare independent of each other and are regularly and orderly arranged; and liquid drops in the air are spontaneously gathered, fused and bounced by utilizing the synergistic effect between the capillary effect difference generated by the distance between adjacent columnar structures in the columnar microarray and the lubricating liquid, so that a self-driven water collection function is realized.

Description

technical field [0001] The invention relates to the technical field of interface wetting materials, in particular to a super-hydrophobic surface with a self-driven water collection function and a preparation method thereof. Background technique [0002] Although the earth is a "water polo", there are very few fresh water resources that can be used by human beings. Coupled with a series of factors such as uneven distribution of water resources and pollution, the lack of water resources has become the biggest problem affecting human survival. one of the threats. Despite the water shortage, in fact, there is a lot of moisture in the air. If the surface with efficient water collection function can be obtained through reasonable design, and the water resources that are not easy to be directly used can be collected from the air, it will be of great significance to alleviate the global water resource crisis. [0003] Many organisms in nature have their own unique and efficient wa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/24B05D1/02B05D3/00
CPCB05D5/00B05D7/24B05D1/02B05D3/002B05D2504/00B05D2518/12B05D2506/10B05D2350/60
Inventor 武艺王栋刘轲卿星夏明程芹徐佳程盼陈媛丽郭启浩
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com