Preparation method of iron strontium oxide magnetic nanoparticles and magnetic damping rubber thereof

A technology of magnetic nanoparticles and strontium ferrite, applied in fibrous fillers, dyed organosilicon compound treatment, etc., can solve the problem of irregular shape, can not meet the excellent physical and mechanical properties of magnetic shock-absorbing rubber and good magnetic shock-absorbing effect, etc. problem, to achieve the effect of excellent formability, excellent shock absorption effect, and simple equipment

Active Publication Date: 2011-11-16
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the existing strontium (barium) ferrite magnetic particles are all micron-sized, irregular in shape, and filled into rubber without surface modification, which cannot meet the requirements of magnetic shock-absorbing rubber and has excellent physical and mechanical properties. and good magnetic damping effect, and provide a preparation method of strontium ferrite magnetic nanoparticles, and the magnetic damping rubber prepared by using the strontium ferrite magnetic nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of strontium ferrite magnetic nanoparticles: 15.20 g FeCl 3 ??6H 2 O, 8.94 g FeCl 2 ??7H 2 O and 2.25 g SrCl 2 ?? 4H 2 O and 0.00025mol polyethylene glycol with a molecular weight of 2000 are poured into 250ml distilled water, and after stirring evenly, the resulting solution is heated to 50°C, and 172ml of 1.5mol / L sodium hydroxide solution and 1mol / L carbonic acid Add 13ml of sodium solution to the obtained solution dropwise at a rate of 40 drops per minute, stir for 90 minutes after the dropwise addition, wash repeatedly with ethanol and distilled water until the product is neutral, and dry it in vacuum at 50°C to obtain strontium ferrite body. The flux NaCl was added to the forebody at a mass ratio of 15% and mixed uniformly, and the mixture was calcined at 900°C for 3 hours to obtain strontium ferrite magnetic nanoparticles. The product is analyzed by TEM, particle size analyzer and infrared spectrum, and it can be known that it is a he...

Embodiment 2

[0045] The preparation method of strontium ferrite magnetic nanoparticles: 15.50 g FeCl 3 ??6H 2 O, 7.46 g FeCl 2 ??7H 2 O and 2.50 g SrCl 2 ?? 4H 2 O and 0.0025mol polyvinyl alcohol with a molecular weight of 8000 are poured into 250ml distilled water, after stirring evenly, the resulting solution is heated to 40°C, and 185ml of 1.8mol / L sodium hydroxide solution and 1.5mol / L sodium carbonate Add 14ml of the solution dropwise to the obtained solution at a rate of 45 drops per minute, stir for 60 minutes after the dropwise addition, wash repeatedly with ethanol and distilled water until the product is neutral, and dry it in vacuum at 50°C to obtain the strontium ferrite precursor. Add flux NaCl to the forebody at a mass ratio of 10% and mix evenly. The mixture is fired at 1100°C for 1 hour to obtain strontium ferrite. The product is analyzed by TEM, particle size analyzer and infrared spectrum, and it can be known that it is spherical with an average particle diameter of ...

Embodiment 3

[0049] The preparation method of strontium ferrite magnetic nanoparticles: 8.0 g FeCl 3 ??6H 2 O, 5.59 g FeCl 2 ??7H 2 O and 2.14 g SrCl 2 ?? 4H 2 O and 0.008mol polypyrrolidone with a molecular weight of 1000 are poured into 250ml distilled water, after stirring evenly, the resulting solution is heated to 80°C, and 200ml of 2.2mol / L sodium hydroxide solution and 12ml of 3mol / L sodium carbonate solution are respectively added , was added dropwise to the obtained solution at a rate of 35 drops per minute, stirred for 50 minutes after the dropwise addition, washed repeatedly with ethanol and distilled water until the product was neutral, and vacuum-dried at 50°C to obtain the strontium ferrite precursor. The flux NaCl was added to the forebody at a mass ratio of 5% and mixed evenly, and the mixture was calcined at 70°C for 4 hours to obtain hexagonal flaky strontium ferrite magnetic nanoparticles. The measured saturation magnetization is 56.24emu / g, the residual magnetizati...

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Abstract

The invention discloses a preparation method of iron strontium oxide magnetic nanoparticles and a magnetic damping rubber thereof, which solves the problem that the existing magnetic damping rubber fails to meet the requirements for excellent physical-mechanical properties and good magnetic damping effect simultaneously. In the preparation method of the iron strontium oxide magnetic nanoparticles, a chemical coprecipitation method is organically combined with a molten salt method to obtain surface-modified nano-grade iron strontium oxide in a regular shape, and then the obtained iron strontium oxide is used for preparing the magnetic damping rubber. The invention has the following advantages: the magnetic particles have nano-scale particle size and excellent magnetic property, and can be uniformly dispersed in a rubber matrix; a nitrile-butadiene rubber is taken as the matrix, thus having excellent oil resistance; and the magnetic damping rubber has excellent mechanical property.

Description

technical field [0001] The invention relates to magnetic shock-absorbing rubber and strontium ferrite magnetic nanoparticles used in the preparation of magnetic shock-absorbing rubber, in particular to a preparation method of strontium ferrite magnetic nanoparticles and a magnetic shock-absorbing device prepared by using the strontium ferrite magnetic nanoparticles rubber. Background technique [0002] Damping material is a kind of vibration and noise reduction material developed in recent years. It is a new type of functional material that can convert vibration energy and sound energy into heat energy and dissipate it. Magnetic rubber is a kind of damping material. Polymer materials are widely used in damping materials due to their special structure. [0003] Magnetic rubber is a composite material processed by magnetic powder, rubber and compounding agents according to a certain process. It can not only lose vibration energy in the form of "heat", but also use magnetic f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622C09C1/24C09C3/12C08L9/02C08K13/06C08K9/06C08K3/22
Inventor 孙友谊江涌刘亚青赵贵哲周兴
Owner ZHONGBEI UNIV
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