Al-doped Barium Strontium Ferrite-Poly-α-Naphthylamine Composites

A barium strontium iron, aluminum doping technology, applied in iron compounds, inorganic material magnetism, inorganic chemistry, etc., can solve the problems of high density of ferrite materials, insufficient absorption frequency band, low absorption strength, etc., and achieve hard agglomeration content Less, improved absorption efficiency, sufficient effect of complexation reaction

Active Publication Date: 2017-05-03
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single conductive polymer and single ferrite material prepared at this stage have certain defects, such as poor processability and low stability of the current conductive polymer; ferrite material has high density and absorption band Defects such as insufficient width and low absorption strength are difficult to meet the requirements of modern society for the diversification of functional materials

Method used

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  • Al-doped Barium Strontium Ferrite-Poly-α-Naphthylamine Composites
  • Al-doped Barium Strontium Ferrite-Poly-α-Naphthylamine Composites
  • Al-doped Barium Strontium Ferrite-Poly-α-Naphthylamine Composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Aluminum-doped barium strontium ferrite-polyα-naphthylamine (barium strontium ferrite (Ba 0.5 Sr 0.5 Fe 12 o 19 , ie the preparation of x=0)):

[0034](1) Add 4.848g of ferric nitrate nonahydrate, 0.1058g of strontium nitrate, and 0.1307g of barium nitrate into deionized water, stir until dissolved, add 4.098g of citric acid monohydrate, mix well, add concentrated ammonia dropwise to adjust PH=7. After ultrasonication for 1 hour, heat and stir in a water bath at about 80°C until a viscous wet gel is formed. The wet gel was vacuum-dried in a drying oven at 120°C until the water evaporated completely to form a xerogel. After grinding, it was kept at 400° C. for 2 hours, then raised to 800° C. at a heating rate of 10° C. / min, and kept at 4 hours to obtain brown barium strontium ferrite.

[0035] (2) Weigh 0.5g of barium strontium ferrite and add it to 50mL of 0.15mol / L hydrochloric acid solution, ultrasonically oscillate for 30 minutes to disperse them evenly, then sl...

Embodiment 2

[0037] Aluminum-doped barium strontium ferrite-polyα-naphthylamine composite material (aluminum-doped barium strontium ferrite Ba 0.5 Sr 0.5 Fe 11.5 Al 0.5 o 19 , i.e. the preparation of x=0.5):

[0038] (1) accurately take by weighing 4.646g ferric nitrate nonahydrate, 0.1307g barium nitrate, 0.1058g strontium nitrate and 0.1875g aluminum nitrate nonahydrate, all the other are with the step (1) in the embodiment 1, promptly get the Ba of x=0.5 0.5 Sr 0.5 Fe 11.5 Al 0.5 o 19 Ferrite;

[0039] (2) Weigh 0.45gBa 0.5 Sr 0.5 Fe 11.5 Al 0.5 o 19 Aluminum-doped barium strontium ferrite, 45mL0.15mol / L hydrochloric acid solution, ultrasonic vibration for 30 minutes to make them uniformly dispersed, then slowly add the analytically pure 0.9g α-naphthylamine monomer into the doped barium strontium ferrite In the hydrochloric acid suspension of the oxygen body, continue to sonicate for about 30 minutes. The mixed solution was transferred to an ice-water bath, and 1.4344 g ...

Embodiment 3

[0041] Aluminum-doped barium strontium ferrite-polyα-naphthylamine composite material (aluminum-doped barium strontium ferrite Ba 0.5 Sr 0.5 Fe 12-x Al x o 19 , ie the preparation of x=1):

[0042] (1) accurately take by weighing 4.444g ferric nitrate nonahydrate, 0.1307g barium nitrate, 0.1058g strontium nitrate and 0.3751g aluminum nitrate nonahydrate (molar content is 0.005), all the other are with the step (1) in the embodiment 1, to obtain final product Ba for x=1 0.5 Sr 0.5 Fe 12- x Al x o 19 Ferrite;

[0043] (2) Weigh 0.4gBa 0.5 Sr 0.5 Fe 11.5 Al 0.5 o 19 Aluminum-doped barium strontium ferrite, 40mL0.15mol / L hydrochloric acid solution, ultrasonic vibration for 30 minutes to make them uniformly dispersed, and then slowly add 0.8g of analytically pure α-naphthylamine monomer into the doped barium strontium ferrite In the hydrochloric acid suspension of the oxygen body, continue to sonicate for about 30 minutes. The mixed solution was transferred to an i...

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Abstract

The invention discloses an aluminum-doped barium strontium ferrite-poly-alpha naphthylamine composite material. The composite material has the double characters of magnetism and electrical conductivity, the synergistic effect can be generated so that the composite material can be turned into a novel composite material with a better property, and good application prospects can be achieved on the aspects of electrochemistry, photocatalysis, microwave absorption, electromagnetic screens and the like. The chemical formula of aluminum-doped barium strontium ferrite is Ba0.5Sr0.5Fe12-xAlxO19, and x is equal to 0.5, 1, 1.5 and 2.

Description

technical field [0001] The invention relates to a composite material, in particular to an aluminum-doped barium strontium ferrite-polyα-naphthylamine composite material. It belongs to the technical field of electromagnetic composite materials. Background technique [0002] Magnetoplumbite M type ferrite has high saturation magnetization, coercive force and magnetocrystalline anisotropy constant, good chemical stability and corrosion resistance, and is widely used as permanent magnet material and microwave absorber and Fields such as perpendicular magnetic recording materials show good application prospects. In the existing ferrite preparation process, there are problems such as high crystal transformation temperature, high impurity phase content, poor dispersion due to the magnetic mutual attraction between particles, and difficult to control the shape. However, suitable magnetic properties play an important role in the application of materials. In order to further improve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/10C01G49/00C08L79/02C08G73/02C08K3/22
CPCC01G49/009C01P2002/72C01P2004/03C01P2004/80C08G73/026C08K3/22C08K2003/2265C08L79/02
Inventor 邢宏龙张玉富申子瑶孙翔
Owner ANHUI UNIV OF SCI & TECH
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