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

Hydrophilic material surface super hydrophobic functional shift micro structure design method

A design method and technology of hydrophilic materials, applied in the direction of microstructure technology, microstructure devices, nanostructure manufacturing, etc., can solve the problems that the surface superhydrophobic performance of hydrophilic materials is difficult to achieve, and it is difficult to achieve superhydrophobic performance, and achieve surface performance stable effect

Inactive Publication Date: 2014-04-09
JIANGSU UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, superhydrophobic properties on the surface of hydrophilic materials are difficult to achieve
[0009] In conclusion, the construction of superhydrophobic surfaces on hydrophilic materials is of great significance in realizing non-pollution self-cleaning and antifouling, while general microstructured surfaces formed by hydrophilic materials are difficult to achieve superhydrophobic properties.

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
  • Hydrophilic material surface super hydrophobic functional shift micro structure design method
  • Hydrophilic material surface super hydrophobic functional shift micro structure design method
  • Hydrophilic material surface super hydrophobic functional shift micro structure design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 (square column form structure, section structure is figure 2 (a) The structural form, environmental conditions and parameters are: P-P 0 =1kPa, θ=50°, liquid 2 is water, γ=0.072N / m, θ C =150°):

[0027] Calculate the protrusion ratio of the surface 4 of the microstructure of the hydrophilic material according to the Cassie calculation formula. f=(cosθ C +1) / (cosθ+1)=0.08155; square column form, L 1 =L 2 =L, A=L 2 f, S = 4 L / f , then there is L max 4 f γ / [ ( P - P 0 ) ( 1 - f ) ] = 89.55 μm , where L max is the maximum per...

Embodiment 2

[0030] Embodiment 2 (square column form structure, section structure is figure 2 (b) The structural form, environmental conditions and parameters are: P-P 0 =10kPa, θ=50°, liquid 2 is water, γ=0.072N / m, θ C =150°):

[0031] Calculate the protrusion ratio of the surface 4 of the microstructure of the hydrophilic material according to the Cassie calculation formula. f=(cosθ C+1) / (cosθ+1)=0.08155; square column form, square column form, L 1 =L 2 =L, A=L 2 f, then there is where L max is the maximum period.

[0032] Select the hydrophilic material microstructure 4 whose structural period is L=1 μm, and calculate the angle β formed between the interface formed by the liquid 2 and air 1 inside the microstructure and the microstructure wall, Far smaller than the intrinsic contact angle 50° of liquid water 2 on a smooth hydrophilic surface, liquid water 2 is in the Cassie contact state on the surface 4 of the microstructure of the hydrophilic material.

[0033] Theref...

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

No PUM Login to View More

Abstract

The invention provides a hydrophilic material super hydrophobic surface micro nano structure design method, relating to the micro nano structure function surface design preparation technical field. Protuberance ratio of micro structure is calculated according to super hydrophobic contact angle requirement; and meanwhile maximum period of micro structure is determined according to use condition; and finally, contact status of liquid and micro structure surface is verified according to the designed micro structure and structure parameter. The invention realizes surface super hydrophobic performance by controlling the form of micro structure without carrying out coating treatment on the surface, thus the super hydrophobic performance of micro structure surface can not be influenced when the structure form of the interior of micro structure is not changed even if the material is partially abrased, super hydrophobic surface has stable performance, and the performance is effective for long term.

Description

technical field [0001] The invention relates to the technical field of micro-nano structure functional surface design and preparation, in particular to a surface structure design method for designing a new structure to achieve super-hydrophobic properties on the surface of hydrophilic materials, which is suitable for self-cleaning and antifouling requirements and requiring surface materials to be non-toxic Design and analysis of superhydrophobic surface structure in the case of coating materials. Background technique [0002] Superhydrophobic surface refers to the surface on which water droplets present a large contact angle (θ > 150°) on the surface. Due to its self-cleaning and antifouling effect, it has a wide range of application prospects in industry. At present, the technology of superhydrophobic modification of the surface of hydrophobic materials has been gradually applied to engineering. Part of the superhydrophobic surface modification technology is used in the ...

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 Patents(China)
IPC IPC(8): B82B3/00B81C99/00
Inventor 周明李健蔡兰
Owner JIANGSU 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