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

Magnetic hydrophobic self-cleaning paint and preparation method thereof

A coating and hydrophobic technology, which is applied in the field of nano-materials, can solve problems such as inapplicability to steel surfaces, and achieve the effects of good coating contact angle, strong adhesion, and easy construction

Active Publication Date: 2014-04-09
SHANGHAI JIAO TONG UNIV +2
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After searching the existing technology, it was found that Chinese Patent Document No. CN101734945A, with a publication date of 2010-06-16, discloses a permeable silicone nano-waterproof and protective agent and its preparation method. This technology proposes that nano-TiO 2 , nano-SiO 2 and nano-ZnO are added to the alkyl alkoxysilane solution to prepare silicone nano-waterproofing agent, but this technology is only suitable for the protection of concrete building surfaces, and cannot be applied to steel surfaces

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
  • Magnetic hydrophobic self-cleaning paint and preparation method thereof
  • Magnetic hydrophobic self-cleaning paint and preparation method thereof
  • Magnetic hydrophobic self-cleaning paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare the magnetic hydrophobic self-cleaning coating of the present invention according to the following proportions, in terms of weight fraction: 10 parts of isooctyltriethoxysilane, Fe modified by dendrimers 3 o 4 0.1 parts of magnetic nanoparticles, 89.9 parts of absolute ethanol.

[0029] The preparation process is as follows:

[0030] Preparation of Fe3O4 magnetic nanoparticles by co-precipitation method; Fe 2+ with Fe 3+ The ions were mixed according to the ratio of 1:2, and then under the protection of nitrogen, a NaOH solution with a concentration of 4M was added, and the reaction was carried out at 80°C for 60min to obtain Fe 3 o 4 Magnetic nanoparticles were washed three times with ultrapure water and absolute ethanol, and set aside.

[0031] Aminosilane modified Fe 3 o 4 Magnetic nanoparticles: 5% Fe 3 o 4 Magnetic nanoparticles were dissolved in a certain amount of ethanol solution, ultrasonically mixed for 30 minutes to make it evenly mixed, then...

Embodiment 2

[0037] Prepare the magnetic hydrophobic self-cleaning coating of the present invention according to the following proportions, in terms of weight fraction: 25 parts of isooctyltriethoxysilane, Fe modified by dendrimers 3 o 4 0.25 parts of magnetic nanoparticles, 74.75 parts of absolute ethanol.

[0038] The preparation process is as follows:

[0039] Preparation of Fe by co-precipitation method 3 o 4 Magnetic nanoparticles; Fe 2+ with Fe 3+ The ions were mixed according to the ratio of 1:2, and then under the protection of nitrogen, a NaOH solution with a concentration of 4M was added, and the reaction was carried out at 80°C for 60min to obtain Fe 3 o 4 Magnetic nanoparticles were washed three times with ultrapure water and absolute ethanol, and set aside.

[0040] Aminosilane modified Fe 3 o 4 Magnetic nanoparticles: 5% Fe 3 o 4 Magnetic nanoparticles were dissolved in a certain amount of ethanol solution, ultrasonically mixed for 30 minutes to make it evenly mixe...

Embodiment 3

[0046] Prepare the magnetic hydrophobic self-cleaning coating of the present invention according to the following proportions, in terms of weight fraction: 50 parts of isobutyltriethoxysilane, Fe modified by dendrimers 3 o 4 0.5 parts of magnetic nanoparticles, 49.5 parts of absolute ethanol.

[0047] The preparation process is as follows:

[0048] Preparation of Fe by co-precipitation method 3 o 4 Magnetic nanoparticles; Fe 2+ with Fe 3+ The ions were mixed according to the ratio of 1:2, and then under the protection of nitrogen, a NaOH solution with a concentration of 4M was added, and the reaction was carried out at 80°C for 60min to obtain Fe 3 o 4 Magnetic nanoparticles were washed three times with ultrapure water and absolute ethanol, and set aside.

[0049] Aminosilane modified Fe 3 o 4 Magnetic nanoparticles: 5% Fe 3 o 4 Magnetic nanoparticles were dissolved in a certain amount of ethanol solution, ultrasonically mixed for 30 minutes to make it evenly mixed,...

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

A magnetic hydrophobic self-cleaning paint and a preparation method thereof belong to the technical field of nano-material technology. The paint comprises alkyl alkoxy silane, Fe3O4 magnetic nanoparticles and an organic solvent. The Fe3O4 magnetic nanoparticles are modified by the dendritic macromolecules. Based on the '' lotus effect '', the invention employs alkyl alkoxy silane as a low surface energy substance, which is added with dendritic macromolecule modified Fe3O4 magnetic nanoparticles as a filler for a rough surface structure of the coating, so as to prepare a hydrophobic self-cleaning coating. The magnetism of Fe3O4 nanoparticles can reinforce adhesion of the coating on a ferromagnetic steel surface.

Description

technical field [0001] The invention relates to a method in the technical field of nanometer materials, in particular to a magnetic hydrophobic self-cleaning coating suitable for the surface of various substrates, especially for the surface of steel with ferromagnetism, and a preparation method thereof. Background technique [0002] With the continuous progress of urbanization and people's continuous pursuit of environmental sanitation, self-cleaning coatings for various stone and steel surfaces have received more and more attention. The use of self-cleaning coatings can not only give the city a new look, but also reduce the cost of cleaning and maintenance of urban buildings and save money. [0003] According to bionic research reports, the surface structure of lotus leaf has the function of hydrophobic self-cleaning. The reason for this is that the surface of the lotus leaf is distributed with countless micro-nano binary roughness waxy papillae structures, which makes 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
IPC IPC(8): C09D183/04C09D5/23C09D5/16C09D7/12C09C1/24C09C3/12C09C3/10
Inventor 崔大祥蔡宁李耀霞焦金红张杰黄东曹海顺
Owner SHANGHAI JIAO TONG 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