Method for preparing super-hydrophobic nano-magnetic thin film

A nano-magnetic and super-hydrophobic technology, applied in the direction of the magnetic layer, can solve the problems of limiting the application range of super-hydrophobic nano-magnetic materials, high process requirements, and high cost, and achieve excellent super-hydrophobic performance, broad application prospects, and preparation process. simple effect

Inactive Publication Date: 2012-02-01
QILU UNIV OF TECH
View PDF7 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common problems of the prepared super-hydrophobic magnetic materials are high cost, difficult operation

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
  • Method for preparing super-hydrophobic nano-magnetic thin film
  • Method for preparing super-hydrophobic nano-magnetic thin film
  • Method for preparing super-hydrophobic nano-magnetic thin film

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example one:

[0025] 1. Preparation of nano iron oxide-silica core-shell particles

[0026] 1.5g γ-Fe 2 O 3 Put it into a three-necked flask, then add 25mL ammonia, 200mL absolute ethanol and 50mL distilled water, ultrasonic dispersion for 10 minutes, then add 5mL ethyl orthosilicate, at 30 ℃, stirring reaction for 12 hours, washing and centrifugation 3 to 5 times , And then dried at 100 ℃ for 3 hours to prepare nano γ-Fe 2 O 3 -Silica core-shell nano particles.

[0027] 2. For nano γ-Fe 2 O 3 -Silica core-shell particles for surface modification

[0028] Weigh the above-mentioned nano γ-Fe 2 O 3 -Disperse 1g of silica core-shell particles in 100mL of absolute ethanol, then add 10mL of vinyltriethoxysilane and 10mL of ammonia, react at 30°C for 24 hours, then centrifuge and dry to obtain a vinyl surface Modified Nano γ-Fe 2 O 3 -Silica core shell particles.

[0029] 3. Preparation of Nano γ-Fe 2 O 3 -Silica-polystyrene composite

[0030] Nano γ-Fe whose surface is modified by v...

Example Embodiment

[0036] Embodiment two:

[0037] 1. Preparation of nano iron oxide-silica core-shell particles

[0038] 1g Fe 3 O 4 Put it into a three-necked flask, then add 20mL ammonia, 150mL absolute ethanol and 40mL distilled water, ultrasonic dispersion for 10 minutes, then add 4mL ethyl orthosilicate, 25 ℃, stirring reaction for 15 hours, washing and centrifugation 3 times, finally Dry at 100°C for 3 hours to prepare nano-Fe 3 O 4 -Silica core shell particles.

[0039] 2. For nano Fe 3 O 4 -Silica core-shell particles for surface modification

[0040] Weigh the above nano Fe 3 O 4 -Disperse 1g of silica core-shell particles in 120mL of absolute ethanol, then add 10mL of vinyltriethoxysilane and 10mL of ammonia, react at 25°C for 24 hours, then centrifuge and dry to obtain a vinyl surface Modified Nano Fe 3 O 4 -Silica core shell particles.

[0041] 3. Preparation of nano-iron oxide-silica-polystyrene composite material

[0042] Nano Fe whose surface is modified by vinyl 3 O 4 -Disperse 1g of sil...

Example Embodiment

[0045] Embodiment three:

[0046] 1. Preparation of nano iron oxide-silica core-shell particles

[0047] 1g γ-Fe 2 O 3 Put it into a three-necked flask, then add 20mL ammonia, 150mL absolute ethanol and 40mL distilled water, ultrasonic dispersion for 10 minutes, then add 4mL ethyl orthosilicate, at 30 ℃, stirring reaction for 12 hours, washing and centrifugation 3 times, finally Dry at 100°C for 3 hours to prepare nano γ-Fe 2 O 3 -Silica core-shell nano particles.

[0048] 2. Surface modification of nano iron oxide-silica core-shell particles

[0049] Weigh the above-mentioned nano γ-Fe 2 O 3 -Disperse 1g of silica core-shell nanoparticles in 120mL of absolute ethanol, then add 12mL of 3-(methacryloyloxy)propyltrimethoxysilane and 10mL of ammonia, react at 30°C for 24 hours, and then centrifuge. And drying to get the surface modified nano-γ-Fe 2 O 3 -Silica core-shell nano particles.

[0050] 3. Preparation of nano-iron oxide-silica-polystyrene composite material

[0051] Nano γ-Fe who...

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
Roll angleaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing a super-hydrophobic nano-magnetic thin film. The method comprises the following steps of: preparing nano iron oxide-silica core-shell particles; adding the nano iron oxide-silica core-shell particles into an alcohol solution, and adding a silane coupling agent and a catalyst to obtain nano iron oxide-silica core-shell particles of which the surfaces are modified by ethylene; and dispersing the surface modified nano iron oxide-silica core-shell particles in a benzene organic solvent, adding an initiator and styrene to obtain a nano iron oxide-silica-polystyrene composite material, dispersing the nano iron oxide-silica-polystyrene composite material through ultrasonic waves, and preparing the super-hydrophobic nano-magnetic thin film by using acasting method or a pulling method. The method has the advantages of simple preparation process and low cost, and can be applied to the fields such as magnetic recording, magnetic separation, biomedicines, environmental protection, military and the like.

Description

technical field [0001] The invention relates to an organic-inorganic nano-magnetic composite material, especially a magnetic super-hydrophobic material, and belongs to the field of functional polymer composite materials. Background technique [0002] Nanotechnology is an important practical technology in today's society, so nanotechnology has become a strategic commanding height for the great powers in the world today. Nano magnetic material is a new type of magnetic material that appeared in the 1980s. As a new nano-inorganic / polymer magnetic functional composite material, nano-magnetic polymer materials have broad application prospects in magnetic recording, magnetic separation, biomedicine, environmental protection, and military affairs. Therefore, the research and development of new nano-magnetic materials has aroused widespread interest from all over the world. [0003] As a new type of magnetic material, superhydrophobic nano-magnetic thin films have both magnetic an...

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): C08L25/06C08K9/06C08K3/22C08K3/36C08F112/08C08J5/18H01F10/20
Inventor 刘伟良张丽东徐文华王丽
Owner QILU UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products