fe 3 o 4 @go/nrMagnetic elastomer composite material and its preparation method

A composite material and elastomer technology, applied in the field of magnetic elastomer composite materials and preparation, can solve the problems of uneven dispersion of magnetic particles, unstable structure and performance, easy aggregation of magnetic particles, etc., to prevent settlement and agglomeration, and improve mechanical mechanics Performance and magnetic properties, the effect of improving mechanical properties

Active Publication Date: 2017-02-22
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the existing Fe 3 o 4 In NR materials, the dispersion of magnetic particles is not uniform, the magnetic particles are easy to aggregate, the structural properties are unstable, and the mechanical properties are poor. Provide a Fe 3 o 4 @GO / NR (Fe 3 o 4 @Graphene Oxide / Natural Rubber) Magnetic Elastomer Composite Material and Preparation Method

Method used

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  • fe <sub>3</sub> o <sub>4</sub> @go/nrMagnetic elastomer composite material and its preparation method
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  • fe <sub>3</sub> o <sub>4</sub> @go/nrMagnetic elastomer composite material and its preparation method

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Embodiment 1

[0026] Embodiment one: Fe 3 o 4 @GO / NR magnetic elastomer composite preparation method, including the following steps:

[0027] 1) Preparation of stable Fe 3 o 4 water-based magnetic fluid

[0028] 3.6g FeCl 2 4H 2 O and 6.1 g FeCl 3 ·6H 2 O was dissolved in 90mL of deionized water, stirred evenly at 50°C, and then 90mL of NaOH aqueous solution with a concentration of 1.34mol / L was added dropwise under stirring at 500r / min. A black precipitate was obtained by magnetic separation, and the supernatant was removed, then ultrasonically dispersed with deionized water, magnetically separated, and washed repeatedly until the pH of the supernatant was neutral. Then the black magnetic particles were ultrasonically dispersed in a certain volume of deionized water, and mechanically stirred at 200r / min for 10min until a stable Fe concentration of 0.02g / mL was formed. 3 o 4 Water-based magnetic liquid;

[0029] 2) Preparation of completely exfoliated GO suspension

[0030] Unde...

Embodiment 2

[0038] Embodiment two: Fe 3 o 4 @GO / NR magnetic elastomer composite preparation method, including the following steps:

[0039] 1) Preparation of stable Fe 3 o 4 water-based magnetic fluid

[0040] 3.6g FeCl 2 4H 2 O and 6.1 g FeCl 3 ·6H 2 O was dissolved in 90mL of deionized water, stirred evenly at 50°C, and then 90mL of NaOH aqueous solution with a concentration of 1.34mol / L was added dropwise under stirring at 500r / min. A black precipitate was obtained by magnetic separation, and the supernatant was removed, then ultrasonically dispersed with deionized water, magnetically separated, and washed repeatedly until the pH of the supernatant was neutral. Then the black magnetic particles were ultrasonically dispersed in a certain volume of deionized water, and mechanically stirred at 200r / min for 10min until a stable Fe concentration of 0.126g / mL was formed. 3 o 4 Water-based magnetic liquid;

[0041] 2) Preparation of completely exfoliated GO suspension

[0042] Und...

Embodiment 3

[0050] Embodiment three: Fe 3 o 4 @GO / NR magnetic elastomer composite preparation method, including the following steps:

[0051] 1) Preparation of stable Fe 3 o 4 water-based magnetic fluid

[0052] 3.6g FeCl 2 4H 2 O and 6.1 g FeCl 3 ·6H 2 O was dissolved in 90mL of deionized water, stirred evenly at 50°C, and then 90mL of NaOH aqueous solution with a concentration of 1.34mol / L was added dropwise under stirring at 500r / min. A black precipitate was obtained by magnetic separation, and the supernatant was removed, then ultrasonically dispersed with deionized water, magnetically separated, and washed repeatedly until the pH of the supernatant was neutral. Then the black magnetic particles were ultrasonically dispersed in a certain volume of deionized water, and mechanically stirred at 200r / min for 10min until a stable Fe concentration of 0.167g / mL was formed. 3 o 4 Water-based magnetic liquid;

[0053] 2) Preparation of completely exfoliated GO suspension

[0054] U...

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Abstract

The invention relates to magnetic elastomer composite materials, in particular to a Fe3O4@GO / NR magnetic elastomer composite material and a preparation method, and solves the problem that magnetic particles in existing materials are nonuniform in dispersion, prone to gathering, unstable in structural performance and low in mechanical performance. The preparation method includes: 1), adopting a chemical co-precipitation method to prepare Fe3O4 water-base magnetic liquid; 2), adopting an improved Hummers method to prepare graphite oxide, and preparing GO suspension liquid; 3), preparing stabilizer, vulcanizer and promoter dispersoid; 4), adopting an emulsion blending method to prepare the Fe3O4@GO / NR magnetic elastomer composite material. The Fe3O4@GO / NR magnetic elastomer composite material and the preparation method have the advantages that a, vulcanizing temperature is low, preparation process is simple, dispersity of the magnetic particles and GO is improved, the problem of proneness to gathering is solved, and the composite material is stable in structure; b, graphene oxide serves as reactive enhanceosome, so that mechanical performance is improved, the magnetic particles are stabilized, sedimentation and aggregation are prevented, and mechanical performance and magnetic performance are improved; c, the composite material can display excellent elastic mechanical performance, magnetic performance, heat resistance and solvent resistance under low concentration.

Description

technical field [0001] The invention relates to a magnetic elastomer composite material and a preparation method, specifically Fe 3 o 4 @GO / NR Magnetic Elastomer Composite Materials and Preparation Methods. Background technique [0002] Fe 3 o 4 / Natural rubber (NR) magnetic elastomer composites have controllable magnetic modulus, magnetoresistance, magnetostriction, magnetostriction and magnetic properties under the action of an external magnetic field, so they are used in the field of shock absorption and noise reduction. Bushings, self-tuning vibration absorbers, vibration isolators, suspension systems, magnetic seals and other fields have a wide range of applications. Preparation of Fe 3 o 4 The traditional method of / NR magnetic elastomer composites is mainly to combine natural rubber raw rubber, Fe 3 o 4 Magnetic powder and other processing aids are prepared by mechanical blending. However, this preparation method leads to uneven dispersion of magnetic particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/02C08K3/04C08K3/22C08K3/06C08K5/39C08K5/42
CPCC08K3/04C08K3/22C08K9/02C08K2003/2275C08K2201/01C08L2201/08C08L7/02
Inventor 赵贵哲孙友谊侯春林高莉刘亚青
Owner ZHONGBEI UNIV
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