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

Preparation method of super-hydrophilic functional membrane

A functional membrane and superhydrophilic technology, applied in the field of functional membranes, can solve the problems of narrow response range and short duration of superhydrophilicity of thin films, and achieve simple and feasible preparation methods, good stability and high surface roughness Effect

Inactive Publication Date: 2018-11-16
陶玲
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the TiO prepared by this preparation method 2 The superhydrophilicity of the film has a narrow response range in the spectrum and does not last long

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing a superhydrophilic functional membrane, comprising modified TiO 2 Sol preparation, SiO 2 -TiO 2 The preparation of the sol and the preparation of the superhydrophilic functional membrane specifically include the following steps:

[0022] 1) Modified TiO 2 Preparation of sol: At room temperature, mix tetrabutyl titanate precursor, complexing agent and 2 / 3 volume of the required alcohol solution and stir for 30 minutes to obtain a light yellow solution A, then mix 1 / 3 volume of the required alcohol solution Mix alcohol solution, deionized water and non-metallic dopant thoroughly, and ultrasonically disperse to obtain solution B. Slowly add solution B to light yellow solution A, and continue stirring for 120 minutes after the addition to obtain a light yellow uniform and transparent sol. Sealed and aged in the dark for 24 hours at room temperature to obtain modified TiO 2 sol, the prepared TiO 2 The sol has good stability, the oligomer phase and...

Embodiment 2

[0032] A method for preparing a superhydrophilic functional membrane, comprising modified TiO 2 Sol preparation, SiO 2 -TiO 2 The preparation of the sol and the preparation of the superhydrophilic functional membrane specifically include the following steps:

[0033] 1) Modified TiO 2 Preparation of the sol: At room temperature, mix the ethyl titanate precursor, complexing agent and 2 / 3 volume of the desired alcohol solution and stir for 30 minutes to obtain a light yellow solution A, and then mix 1 / 3 volume of the desired alcohol solution The solution, deionized water and non-metallic dopant were thoroughly mixed, ultrasonically dispersed to obtain solution B, and solution B was slowly added dropwise to the light yellow solution A, and after the addition, continued to stir for 120 minutes to obtain a light yellow uniform and transparent sol, and finally room temperature Sealed and aged in the dark for 24 hours to obtain modified TiO 2 Sol;

[0034] 2) SiO2 2 -TiO 2 Pre...

Embodiment 3

[0043] A method for preparing a superhydrophilic functional membrane, comprising modified TiO 2 Sol preparation, SiO 2 -TiO 2 The preparation of the sol and the preparation of the superhydrophilic functional membrane specifically include the following steps:

[0044] 1) Modified TiO 2 Preparation of sol: At room temperature, mix tetrabutyl titanate precursor, complexing agent and 2 / 3 volume of the required alcohol solution and stir for 40 minutes to obtain light yellow solution A, then mix 1 / 3 volume of the required alcohol solution Mix alcohol solution, deionized water and non-metallic dopant thoroughly, and ultrasonically disperse to obtain solution B. Slowly add solution B to light yellow solution A, and continue stirring for 120 minutes after the addition to obtain a light yellow uniform and transparent sol. Sealed and aged in the dark for 24 hours at room temperature to obtain modified TiO 2 Sol;

[0045] 2) SiO2 2 -TiO 2 Preparation of the sol: mix the KH560 solut...

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 discloses a preparation method of a super-hydrophilic functional membrane. The preparation method comprises the following steps: firstly, taking titanate sol as a TiO2 precursor, acetylacetone as a complexing agent and a non-metal dopant as a modifier to prepare the modified TiO2 sol, then performing reflux ageing on tetraethoxysilane, KH560 solution, ethanol and deionized water to obtain SiO2 sol, then adding the prepared SiO2 sol into the modified TiO2 sol to obtain SiO2-TiO2 sol, coating the SiO2-TiO2 sol with film, and carrying out heat treatment to prepare SiO2-TiO2 super-hydrophilic functional membrane. The preparation method disclosed by the invention is simple and feasible, efficient and environment-friendly, and the reaction process is easy to control and is suitablefor industrial production; the prepared super-hydrophilic functional film is rough in microscopic surface, small in contact angle and high in hydrophilicity, the super-hydrophilicity can be respondedunder the action of visible light and can be kept for a long time under the irradiation of visible light.

Description

technical field [0001] The invention relates to the technical field of functional membranes, in particular to a preparation method of a superhydrophilic functional membrane. technical background [0002] The super-hydrophilic film will make the contact angle of small water droplets on the surface of the film close to 0° (generally up to 10°). When water touches the surface of the film, it will spread rapidly on the surface to form a uniform water film. superhydrophilic properties. With the continuous development of science and technology, super-hydrophilic films have attracted the attention of many scientific researchers because of their unique properties. At present, there are many methods for preparing super-hydrophilic films, mainly including sol-gel method, hydrothermal method, Liquid phase deposition method, self-assembly preparation method, etc., but due to the complicated preparation process and the limitation that it is not suitable for large-area film formation, su...

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
IPC IPC(8): C04B35/622C04B35/14C04B35/46
CPCC04B35/14C04B35/46C04B35/62218C04B2235/3232C04B2235/3418C04B2235/656C04B2235/6567
Inventor 陶玲
Owner 陶玲
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