Waterproof and oil-proof magnetic tio2/fe3o4 composite particle and its preparation method and application

A waterproof and oil-proof, composite particle technology, which is used in the preparation of microspheres, magnetic coatings, inorganic material magnetism, etc., can solve the problems of water-proof and oil-proof that are not mentioned, achieve excellent waterproof and oil-proof performance, and is conducive to industrial production and production. high rate effect

Inactive Publication Date: 2014-10-22
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the technical solution passes the Fe 3+ Move the spectral response range to visible light, through SiO 2 The porous structure controls the Fe 3+ To TiO 2 Medium penetration, thereby improving the photocatalytic efficiency of the catalyst, but the technical solution does not mention the performance of water and oil repellency

Method used

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  • Waterproof and oil-proof magnetic tio2/fe3o4 composite particle and its preparation method and application
  • Waterproof and oil-proof magnetic tio2/fe3o4 composite particle and its preparation method and application
  • Waterproof and oil-proof magnetic tio2/fe3o4 composite particle and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of waterproof and oil-proof magnetic TiO 2 / Fe 3 o 4 The preparation method of composite particle product, comprises the following steps:

[0043] 1) Fe with different particle sizes 3 o 4 Preparation of particles: prepared by hydrothermal method, 0.65g of FeCl 2 .4H 2 O, 0.5g of Na 2 SO 3 Dissolve 0.2g of polyvinylpyrrolidone (PVP, model K30 polyvinylpyrrolidone produced by BASF, Germany) in 20g of deionized water, then add 0.16g of NaOH, stir evenly, and pass nitrogen gas into it for 30 minutes. , into a 35mL autoclave liner, heated to 140°C for 12 hours, cooled to room temperature 25°C, then taken out of the autoclave liner, and precipitated by magnetic separation (using strong magnetic force to separate the magnetic particles in the reaction solution) The black particles were washed three times with deionized water, then washed three times with ethanol, dried in an oven at 80°C, and stored in vacuum to obtain Fe with different particle sizes. 3 o 4 ...

Embodiment 2

[0059] A kind of waterproof and oil-proof magnetic TiO 2 / Fe 3 o 4 The preparation method of composite particle product, comprises the following steps:

[0060] 1) Fe with different particle sizes 3 o 4 Preparation of particles: prepared by hydrothermal method, 0.65g of FeCl 2 .4H 2 O, 0.58g of Na 2 SO 3 Dissolve 0.25g of polyvinylpyrrolidone (PVP, model K30 polyvinylpyrrolidone produced by BASF, Germany) in 20g of deionized water, then add 0.19g of NaOH, stir evenly, and after blowing in nitrogen gas for 30 minutes, , into a 35mL autoclave liner, heated to 150°C to react for 11 hours, cooled to room temperature 25°C, then taken out the autoclave liner, and used magnetic separation method (using strong magnetic force to separate the magnetic particles in the reaction solution) to precipitate The black particles were washed three times with deionized water, then washed three times with ethanol, dried in an oven at 80°C, and stored in vacuum to obtain Fe with different p...

Embodiment 3

[0064] A kind of waterproof and oil-proof magnetic TiO 2 / Fe 3 o 4 The preparation method of composite particle product, comprises the following steps:

[0065] 1) Fe with different particle sizes 3 o 4 Preparation of particles: prepared by hydrothermal method, 0.65g of FeCl 2 .4H 2 O, 0.4g of Na 2 SO 3 Dissolve 0.14g of polyvinylpyrrolidone (PVP, model K30 polyvinylpyrrolidone produced by BASF, Germany) in 20g of deionized water, then add 0.13g of NaOH, stir evenly, and after blowing in nitrogen gas for 30 minutes, , transferred to a 35mL autoclave liner, heated to 130°C for 13 hours, cooled to room temperature 25°C, took out the autoclave liner, and used magnetic separation (use strong magnetic force to separate the magnetic particles in the reaction solution) to precipitate The black particles were washed three times with deionized water, then washed three times with ethanol, dried in an oven at 80°C, and stored in vacuum to obtain Fe with different particle sizes. ...

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Abstract

The invention discloses a preparation method of water and oil repellent magnetic TiO2 / Fe3O4 composite particles. The method includes: dissolving FeCl2.4H2O, Na2SO3, polyvinylpyrrolidone and NaOH in deionized water, carrying out a reaction at a temperature of 100DEG C-180DEG C for 8h-16h, and performing separation, washing as well as drying to obtain Fe3O4 particles; dispersing the Fe3O4 particles in ethanol uniformly, adding ammonia water, conducting an ultrasonic treatment, then adding tetrabutyl titanate dropwisely, implementing further stirring at 50DEG C-70DEG C for 1h-3h, then carrying out separation, washing and drying to obtain the water and oil repellent magnetic TiO2 / Fe3O4 composite particles, and then performing fluorosilane modification to improve product performance. The preparation method has the advantages of simple production process, strong producible implementability, and high yield. With good water and oil repellent properties, the water and oil repellent magnetic TiO2 / Fe3O4 composite particles or products provided in the invention can be widely applied in the aspects of coatings, medical machineries, and steel corrosion prevention, etc.

Description

technical field [0001] The invention relates to the field of hydrophobic materials, in particular to a waterproof and oil-proof magnetic TiO 2 / Fe 3 o 4 Composite particles and methods for their preparation and applications. Background technique [0002] At present, the preparation and application of superhydrophobic materials have received extensive attention in recent years. With the improvement of nanotechnology, people explore and explain the reasons of superhydrophobic phenomenon in nature from the mechanism, and use this as a theoretical basis to prepare superhydrophobic materials with many functions and application prospects, which are applied in actual life and production. [0003] With the deepening of research on superhydrophobic materials, people's requirements for their functions and applications are getting higher and higher. The preparation of materials with phase-specific properties and functions according to different application ranges is a research hotsp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02H01F1/11C09D133/00C09D167/00C09D161/20C09D5/23
Inventor 李超荣吕宇君董文钧
Owner ZHEJIANG SCI-TECH UNIV
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