Composite material with conductive and ferromagnetic properties and hybrid slurry

A composite material, ferromagnetic technology, applied in the direction of ferrous oxide, nanotechnology for materials and surface science, adhesive type, etc., can solve the problem of insufficient ferromagnetism or conductivity of nanocomposite materials, composite materials It is not easy to disperse and process, and achieve the best electromagnetic wave protection effect

Active Publication Date: 2013-06-19
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although many people have researched and developed material technologies with both conductivity and ferromagnetism, there are more or less shortcomings in the existing technologies, such as: the ferromagnetism or conductivity of the nanocomposite itself is insufficient, Or there are problems in the production process of composite materials that are not easy to disperse and process

Method used

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  • Composite material with conductive and ferromagnetic properties and hybrid slurry
  • Composite material with conductive and ferromagnetic properties and hybrid slurry
  • Composite material with conductive and ferromagnetic properties and hybrid slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] [Example 1] Synthesis of columnar nano iron oxide

[0037] 0.648 g FeCl 3 Dissolve in 80ml of water, then add 0.556 grams of ferrous sulfate (FeSO 4 ·7H 2 O) and stir to dissolve. After dissolving, add 40ml of toluene (Toluene) under nitrogen, then slowly add 10ml (20mM) of cetyltrimethylammonium bromide (CTAB; cetyltrimethylammonium bromide) and 10ml of ethylenediamine (ethylenediamine) as a surfactant , after stirring for 20 minutes, react at 120° C. for 20 hours. Then, the sample is taken out and washed with pure water, and then the particles are dispersed in the aqueous solution using an ultrasonic oscillator. The shape of the synthesized iron oxide was analyzed by scanning electron microscope (SEM; scanning electron microscope), transmission electron microscope (TEM; Transmission electron microscopy) and X-ray diffraction (XRD; X-ray scattering techniques) , particle size and composition.

[0038] figure 1 SEM images showing the formed columnar nano-iron oxi...

Embodiment 2

[0041] [Example 2] Synthesis of columnar nano-iron oxide with conductive polymer shell

[0042] Take 0.04 g of nano columnar iron oxide synthesized in Example 1, put it into water, add 40 μl of aniline (aniline) and stir. At the same time, 0.328 g of ammonium persulfate (APS; Ammonium persulfate) was dissolved in 0.01 M hydrochloric acid solution as an initiator. Then, slowly add ammonium persulfate solution in the reaction solution, and keep stirring and keep the ice bath for 6 hours, after the reaction, ferric iron tetroxide (Fe 3 o 4 ) / polyaniline (PANi; polyaniline) core-shell particles. Wash with pure water and then disperse it in water. The core-shell structure of the synthesized ferric oxide / polyaniline particles was analyzed by TEM. refer to Figure 4 It can be found that the inner layer of the particles is darker iron oxide, and the outer layer is covered with a very thin layer of paler polyaniline. This is because the electron density of polyaniline is lower th...

Embodiment 3

[0044] [Example 3] Preparation of mixed slurry-B

[0045] The columnar nano-iron oxide synthesized in Example 1 and dispersed in water, an appropriate proportion of conductive polymer and 1 wt% polyvinyl alcohol (PVA; polyvinyl alcohol) were mixed. Among them, the conductive polymer used is poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT:PSS; Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate); purchased from Quanhong ). Vibrate the above mixture with an ultrasonic oscillator for 30 minutes, and then continue stirring for about 18 hours to make it evenly mixed to obtain a mixed slurry.

[0046] Be formulated with the mixed slurry that has three kinds of different columnar nano-iron oxide contents according to the above-mentioned method, wherein the content of columnar nano-iron oxide is respectively 1.2wt% (B 1 ), 6wt% (B 2 ), 12wt% (B 3 ).

[0047] Measure the conductivity (Conductivity) of each slurry with conductivity meter respectively, it is 1040...

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Abstract

In one embodiment of the disclosure, a composite material with conductive and ferromagnetic properties is provided. The composite material includes: 5 to 90 parts by weight of a conductive polymer matrix; and 0.1 to 40 parts by weight of iron oxide nanorods, wherein the iron oxide nanorods are ferromagnetic and have a length-to-diameter ratio of larger than 3. In another embodiment, a hybrid slurry is provided. The hybrid slurry includes a conductive polymer, and iron oxide nanorods, wherein the iron oxide nanorods are ferromagnetic and have a length-to-diameter ratio of larger than 3; and a solvent.

Description

technical field [0001] The present invention relates to composite materials, and in particular to a composite material with ferromagnetism and conductivity and its hybrid slurry. Background technique [0002] Electromagnetic interference (Electro-Magnetic Interference, EMI) is electronic pollution discovered in recent years. With the development of high technology, the degree of electromagnetic radiation is becoming more and more serious. Failure to effectively isolate electromagnetic waves will not only hinder various communications, cause errors and damage to various precision instruments, but even affect human quality of life and health. Therefore, the demand for high-performance electromagnetic wave shielding materials is increasing. [0003] Electromagnetic waves are mainly composed of mutually perpendicular electric fields and magnetic fields, so they can be divided into shielding by electrostatic fields and static magnetic fields. Electrostatic field shielding is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L49/00C08L79/04C08L65/00C08L79/02C08L81/02C08K9/10C08K7/00C08K3/22
CPCC08L65/00C08L79/02C08K2003/2265C08G2261/3221C08G2261/3223C08G2261/3422C08G2261/51C01G49/02C01G49/08C01P2002/72C01P2004/03C01P2004/16C01P2006/40C01P2006/42C08K2003/2272C08K2003/2275C09J163/00B82Y30/00C08K3/22C08L79/04
Inventor 黄英婷杨慕震汪进忠张光伟
Owner IND TECH RES INST
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