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

PH-responsive super-hydrophobic coating material as well as preparation method and application thereof

A super-hydrophobic coating and responsive technology, applied in coatings, separation methods, chemical instruments and methods, etc., can solve problems such as difficult separation, and achieve high separation throughput and excellent recyclability

Active Publication Date: 2020-01-31
QILU UNIV OF TECH
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, except for oily wastewater, oil / water emulsions with droplet sizes below 20 μm are more difficult to separate

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
  • PH-responsive super-hydrophobic coating material as well as preparation method and application thereof
  • PH-responsive super-hydrophobic coating material as well as preparation method and application thereof
  • PH-responsive super-hydrophobic coating material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Dissolve 0.5g stearic acid in 20mL absolute ethanol, then add 0.42g TiO 2 , stirred at room temperature for 30min, then added a dispersion of 2wt% chitosan (0.06g, 3mL) in ethanol, and continued to stir for 20min at room temperature to obtain a superhydrophobic coating solution. Then put cotton cloth (Φ=4cm), filter paper (Φ=4cm), and sponge (2cm×2cm×2cm) in the prepared superhydrophobic coating solution in sequence, and the superhydrophobic material can be obtained by dip coating.

[0054] The principle of the superhydrophobic material prepared by the present disclosure is as follows: figure 1 As shown, the superhydrophobic coating is applied to the cotton cloth by the dip coating process to form a superhydrophobic material. Hydrophilic, and then after heat treatment (heating at 80°C for 15 minutes), the superhydrophobic property will be restored.

[0055] In this disclosure, chitosan (CS) with a particle size between 400-800nm ​​and TiO with a particle size of 10-25...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a pH-responsive super-hydrophobic coating material as well as a preparation method and application thereof. The preparation method comprises the steps that: reacting stearic acid and nano titanium dioxide to obtain a stearic acid / nano titanium dioxide compound, reacting the stearic acid / nano titanium dioxide compound with chitosan to obtain the pH-responsive super-hydrophobic coating material, wherein the mass ratio of the nano titanium dioxide to the chitosan is 6-9: 1. The coating material provided by the invention not only can be converted into a super-hydrophilic state from a super-hydrophobic state under ammonia treatment, but also can recover the super-hydrophobicity again after heating treatment; and in addition, by utilizing the pH response mechanism of the coating material, continuous separation of oil / water / oil phases can be realized, and stable emulsion separation of different surfactants can also be realized.

Description

technical field [0001] The disclosure relates to a pH-responsive superhydrophobic coating material, a preparation method and an application. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] In recent years, frequent crude oil spill accidents and continuous discharge of industrial oily wastewater have caused serious pollution to people's living environment, which has aroused widespread concern. When untreated oily sewage enters the water body, it is easy to form an oil film on the water surface, which prevents oxygen from entering the water and reduces the dissolved oxygen in the water body. This will cause plankton, aquatic plants, etc. to be affected or even die due to the lack of oxygen. Eventually, the self-purification function of the water body will be lost and even the ecological balance of the ocean and lakes will be destroyed. Therefore, ...

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): C09D1/00C09D7/65C09D7/63B01D17/022
CPCB01D17/02C09D1/00C09D7/63C09D7/65
Inventor 陶芙蓉任金瓶闫玉玲刘利彬崔月芝
Owner QILU UNIV OF TECH
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