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Nano-ferroferric oxide/polystyrene magnetic composite material and its preparation method

A magnetic composite material, the technology of ferroferric oxide, applied in the direction of electrical components, etc., can solve the problems of microwave absorption, limited application range, and inability to shield electromagnetic waves, etc., and achieve the effect of simple and easy preparation method

Inactive Publication Date: 2004-05-05
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, polystyrene is one of the general-purpose plastics with a wide range of applications. It has the advantages of low price, easy molding and processing, and low hygroscopicity. However, polystyrene is a polymer material and is non-magnetic. If it is used in Electronic appliances, instruments, microwave devices and other fields cannot play the role of shielding electromagnetic waves and absorbing microwaves, so its application range is limited

Method used

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  • Nano-ferroferric oxide/polystyrene magnetic composite material and its preparation method
  • Nano-ferroferric oxide/polystyrene magnetic composite material and its preparation method
  • Nano-ferroferric oxide/polystyrene magnetic composite material and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0023] Use ferric chloride, ferrous chloride and ammonia water to prepare 1mol / L, 2mol / L and 0.9mol / L aqueous solutions respectively; 3+ : Fe 2+ =2:1 (molar ratio) mix the ferric chloride solution and the ferrous chloride solution, stir at a high speed under the condition of 55°C, add 0.9mol / L ammonia water in two times, add four Oleic acid with 20% ferric oxide by weight, finally controlling the pH value of the solution at 10, collecting nano ferric oxide particles from the solution, with a particle size of about 10nm;

[0024] Then, the black nanometer iron ferric oxide particles obtained by the reaction were washed with deionized water to neutrality, and then washed with absolute ethanol for several times, and the washed iron ferric oxide particles were put into a vacuum oven at 70° C. for drying.

[0025] Put the dried nanometer ferric oxide and styrene monomer into a ball mill and carry out ball milling under the action of oleic acid for 36 hours to obtain a nanometer fe...

Embodiment 2

[0027] Use ferric chloride, ferrous chloride, and sodium hydroxide to prepare 1mol / L, 2mol / L, and 0.9mol / L aqueous solutions respectively; 3+ : Fe 2+ =2:1 (molar ratio) mix ferric chloride solution and ferrous chloride solution, stir at high speed under the condition of 60°C, add 0.9mol / L sodium hydroxide solution in two times, when the solution turns reddish brown When adding oleic acid with 20% weight of ferric oxide, the final pH value of the solution is controlled at 12 to obtain nanometer ferric oxide particles with a particle diameter of about 10nm. Then, the black nanometer iron ferric oxide particles obtained by the reaction were washed with deionized water to neutrality, and then washed with absolute ethanol for several times, and the washed iron ferric oxide particles were put into a vacuum oven at 70° C. for drying.

[0028] Put the dried nano ferric oxide and styrene monomer into the ball mill and carry out ball milling under the effect of surfactant oleic acid fo...

Embodiment 3

[0030] Use ferric chloride, ferrous chloride and ammonia water to prepare 1mol / L, 2mol / L and 0.9mol / L aqueous solutions respectively; 3+ : Fe 2+ =2:1 (molar ratio) mix the ferric chloride solution and the ferrous chloride solution, stir at a high speed under the condition of 50°C, add 0.9mol / L ammonia water in two times, add four Oleic acid with 20% by weight of ferric iron oxide was used to finally control the pH value of the solution at 8 to obtain ferric ferric oxide nanoparticles with a size of 10nm. Then, the black nanometer iron ferric oxide particles obtained by the reaction were washed with deionized water to neutrality, and then washed with absolute ethanol for several times, and the washed iron ferric oxide particles were put into a vacuum oven at 70° C. for drying.

[0031] Put the dried nano ferric oxide and styrene monomer into the ball mill and carry out ball milling under the effect of surfactant oleic acid for 36 hours to obtain the nano ferric oxide / styrene d...

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Abstract

A nano-class magnetic composite Fe3O4 / polystyrene material is prepared through mixing the aqueous solution of two-valence Fe salt with that of three-valence one, adding alkali solution containing surfactant, reacting to obtain Fe3O4 nanoparticles, and ball grinding for dispersing them in styrene monomer while polymerizing reaction.

Description

technical field [0001] The invention relates to a method for preparing a nanometer ferric oxide / polystyrene magnetic composite material, in particular to a preparation method for synthesizing a nanometer ferric oxide / polystyrene magnetic composite material by bulk method. Background technique [0002] As we all know, polystyrene is one of the general-purpose plastics with a wide range of applications. It has the advantages of low price, easy molding and processing, and low hygroscopicity. However, polystyrene is a polymer material and is non-magnetic. If it is used in Electronic appliances, instruments, microwave devices and other fields cannot play the role of shielding electromagnetic waves and absorbing microwaves, so their application range is limited. Contents of the invention [0003] The technical problem to be solved in the present invention is to disclose a nano ferric oxide / polystyrene magnetic composite material and its preparation method, so as to overcome the ...

Claims

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Application Information

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IPC IPC(8): C08K3/10C08L25/06H01K9/00
Inventor 陈建定姜振玉翁盛光曹宏明马新胜
Owner EAST CHINA UNIV OF SCI & TECH
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