CN105524273A - A polyaniline-doped BaFe<12>O<19>/CoFe2O4 wave-absorbing material and a preparing method thereof - Google Patents

A polyaniline-doped BaFe<12>O<19>/CoFe2O4 wave-absorbing material and a preparing method thereof Download PDF

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CN105524273A
CN105524273A CN201511018240.5A CN201511018240A CN105524273A CN 105524273 A CN105524273 A CN 105524273A CN 201511018240 A CN201511018240 A CN 201511018240A CN 105524273 A CN105524273 A CN 105524273A
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cofe
absorbing material
xbafe
bafe
hydrochloric acid
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杨海波
叶婷
林营
朱建锋
王芬
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Shaanxi University of Science and Technology
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/02—Polyamines
    • C08G73/026—Wholly aromatic polyamines
    • C08G73/0266—Polyanilines or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
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    • C01G49/00—Compounds of iron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00—Compounds of cobalt
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
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    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Abstract

A polyaniline-doped BaFe<12>O<19>/CoFe2O4 wave-absorbing material and a preparing method thereof are disclosed. The method includes dissolving xBaFe<12>O<19>/(1-x)CoFe2O4 composite powder into a hydrochloric acid solution with the x being 0.6-0.9, fully stirring, adding polyaniline to obtain a solution mixture, continuously stirring the solution mixture in an ice water bath, adding a hydrochloric acid solution of ammonium persulfate, reacting for 8-15 h, washing, and drying to obtain PANI/xBaFe<12>O<19>/(1-x)CoFe2O4 composite powder. By combining different wave-absorbing materials, impedance matching properties are improved and wave-absorbing capability is improved. The BaFe<12>O19 and the CoFe2O4 have good exchange coupling effects, thus increasing the magnetic energy product, improving the impedance matching properties so as to optimize a wave-absorbing property and to prepare the wave-absorbing material with good properties.

Description

A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4absorbing material and preparation method
Technical field
The invention belongs to material science, relate to a kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4absorbing material and preparation method.
Background technology
Along with the develop rapidly of electronic technology, the electromagnetic radiation be subject in people's daily life is on the increase; Simultaneously for adapting to the needs of modern war, stealth material will be widely used in weapon, and therefore, the research of absorbing material has important practical value.Absorbing material is a kind of energy converslon materials, can electromagnetic wave absorption effectively, and electromagnetic energy to be dissipated by energy transformation or hertzian wave is disappeared because of interference.The Microwave Absorption Properties of material depends primarily on its dielectric properties (complex permittivity, ε=ε '-j ε "), magnetic properties (complex permeability, μ=μ '-j μ ") etc.Therefore, absorbing material can be divided into dielectric absorbing material and electromagnetic wave absorbing material.At present, research about dielectric absorbing material and electromagnetic wave absorbing material is more, but narrow based on the absorption band of the dielectric absorbing material of carbon, and the absorbing property of electromagnetic wave absorbing material is subject to the restriction of high quality and Snoek, thus make it cannot widespread use in airborne system.Therefore traditional absorbing material exists the shortcomings such as density is large, absorption band is narrow, under being difficult to meet modern battlefield condition, stealthy requirement equipped by advanced weaponry.Ferrimagnetism absorbing material is a kind of composite dielectric material, has again magnetic loss effect to the polarizing effect of the existing dielectric characteristics aspect of electromagnetic absorption.Have that specific absorption is high, coating is thin and the advantage such as bandwidth, be widely used in radar absorbing field.Magnetoplumbate-type BaFe 12o 19absorbing material is hexaplanar, and having the advantages such as higher magnetocrystalline anisotropy, larger complex permeability real part and imaginary part, absorption band be wide, is modal ferrite wave-absorbing material.BaFe 12o 19with CoFe 2o 4after compound, its magnetic property can be improved, thus improve absorbing property.The weak point of ferrimagnetism absorbing material is that its complex permittivity real part and complex permeability real part are less.Density is large, and saturation magnetization is low, and the low and poor high temperature stability of Curie temperature, therefore range of application is restricted.Ferrite has good magnetic property, and polyaniline has excellent electroconductibility makes its impedance matching property poor, and when being used alone, absorbing property is poor.
Summary of the invention
The object of the present invention is to provide a kind of a kind of Polyaniline Doped BaFe with excellent absorbing property 12o 19/ CoFe 2o 4absorbing material and preparation method, the reflection loss of this material can reach-18 ~-56dB, and preparation technology is simple.
For achieving the above object, the present invention can adopt following technical scheme;
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4absorbing material, the Reactive Synthesis expression formula of this absorbing material is PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4, wherein x is mass percent, and x is 0.6 ~ 0.9.
The Reactive Synthesis expression formula of this absorbing material is PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4, wherein x is mass percent, and x is 0.7 ~ 0.9.
The Reactive Synthesis expression formula of this absorbing material is PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4, wherein x is mass percent, and x is 0.8 ~ 0.9.
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, comprises the following steps:
1) by xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in hydrochloric acid soln, after stirring, adds aniline, obtains mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is (0.4 ~ 0.6) g:0.5mL; X is 0.6 ~ 0.9;
2) mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of ammonium persulphate, react after 8 ~ 15 hours, after washing, drying, obtain PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is (0.8 ~ 1.2): 1.
Step 1) middle xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule obtains by the following method: by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 6.8 ~ 7.3, the post-drying that stirs at 75 ~ 85 DEG C obtains xerogel; Again xerogel is ground, and calcine at 950 ~ 1100 DEG C and be incubated 3 ~ 5 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.6 ~ 0.9.
Step 1) in stir time be 30 ~ 60 minutes.
Step 1) in the concentration of hydrochloric acid soln be 1mol/L, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of composite granule and hydrochloric acid soln is (0.4 ~ 0.6) g:50mL.
Step 2) in the hydrochloric acid soln of ammonium persulphate obtain by the following method: ammonium persulphate being joined concentration is in 0.8 ~ 1.2mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.
Step 2) in washing adopts distilled water, ethanol repetitive scrubbing is until filtrate is colourless.
Step 2) in dry temperature be 50 ~ 80 DEG C, the dry time is 12 ~ 18 hours; Drying is carried out in vacuum chamber.
Compared with prior art, the beneficial effect that the present invention has: the present invention, by by dissimilar absorbing material compound, improves impedance matching property, improves its absorbing property.BaFe in the present invention 12o 19and CoFe 2o 4when quality is 9:1, there is good spin-exchange-coupled effect, improve magnetic energy product, thus can impedance matching property be improved, to optimize absorbing property, obtain absorbing material of good performance.Meanwhile, owing to there is spin-exchange-coupled effect between hard/soft magnetic ferrite, make this material have the high coercive field of hard ferrite and the high saturation and magnetic intensity of soft magnetic ferrite concurrently thus can magnetic energy product be improved, and then can absorbing property be optimized.The reflection loss of composite granule of the present invention can reach-18 ~-56dB, and the preparation technology of this composite granule is simple.
Accompanying drawing explanation
Fig. 1 is for work as BaFe 12o 19mass ratio be 90%, CoFe 2o 4the XRD figure of mass ratio composite granule when being 10%.
Fig. 2 is for work as BaFe 12o 19mass ratio be 80%, CoFe 2o 4the XRD figure of mass ratio composite granule when being 20%.
Fig. 3 is for work as BaFe 12o 19mass ratio be 70%, CoFe 2o 4the XRD figure of mass ratio composite granule when being 30%.
Fig. 4 is for work as BaFe 12o 19mass ratio be 60%, CoFe 2o 4the XRD figure of mass ratio composite granule when being 40%.
Fig. 5 is for work as BaFe 12o 19mass ratio be 90%, CoFe 2o 4the magnetic hysteresis loop of mass ratio composite granule when being 10%.
Fig. 6 is for work as BaFe 12o 19mass ratio be 80%, CoFe 2o 4the magnetic hysteresis loop of mass ratio composite granule when being 20%.
Fig. 7 is for work as BaFe 12o 19mass ratio be 70%, CoFe 2o 4the magnetic hysteresis loop of mass ratio composite granule when being 30%.
Fig. 8 is for work as BaFe 12o 19mass ratio be 60%, CoFe 2o 4the magnetic hysteresis loop of mass ratio composite granule when being 40%.
Fig. 9 is for work as BaFe 12o 19mass ratio be 90%, CoFe 2o 4the reflection loss figure of mass ratio composite granule when being 10%.
Figure 10 is for work as BaFe 12o 19mass ratio be 80%, CoFe 2o 4the reflection loss figure of mass ratio composite granule when being 20%.
Figure 11 is for work as BaFe 12o 19mass ratio be 70%, CoFe 2o 4the reflection loss figure of mass ratio composite granule when being 30%.
Figure 12 is for work as BaFe 12o 19mass ratio be 60%, CoFe 2o 4the reflection loss figure of mass ratio composite granule when being 40%.
Embodiment
Be described in detail by specific embodiment below in conjunction with accompanying drawing.
Embodiment 1
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, comprises the following steps:
1) by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O (citric acid) is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 6.8, the post-drying that stirs at 75 DEG C obtains xerogel; Again xerogel is ground, and calcine at 950 DEG C and be incubated 5 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.9;
2) by 0.5gxBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in the hydrochloric acid soln of the 1mol/L of 50mL, stirs after 30 minutes, adds aniline, obtain mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is 0.5g:0.5mL; X is 0.9;
3) ammonium persulphate being joined concentration is in 1mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.Mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of 10mL ammonium persulphate, react after 8 hours, adopt distilled water, ethanol repetitive scrubbing until filtrate is colourless, drying is in vacuum chamber at 50 DEG C dry 18 hours, obtains PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is 0.8:1.
See Fig. 1, as seen from Figure 1, because polyaniline is non-crystalline state, only containing BaFe in matrix material 12o 19and CoFe 2o 4two-phase, exists without other dephasign.
See Fig. 5, as seen from Figure 5, coercive field is 2468.7 (Oe), and saturation magnetization is 14.7 (emu/g).
See Fig. 9, as seen from Figure 9, have obvious absorption peak when 11.5 ~ 15.4 Gigahertz, reflection loss is-56.6dB to the maximum.
Embodiment 2
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, comprises the following steps:
1) by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O (citric acid) is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 7, the post-drying that stirs at 85 DEG C obtains xerogel; Again xerogel is ground, and calcine at 1100 DEG C and be incubated 3 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.8;
2) by 0.5gxBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in the hydrochloric acid soln of the 1mol/L of 50mL, stirs after 40 minutes, adds aniline, obtain mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is 0.4g:0.5mL; X is 0.8;
3) ammonium persulphate being joined concentration is in 1mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.Mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of 10mL ammonium persulphate, react after 15 hours, adopt distilled water, ethanol repetitive scrubbing until filtrate is colourless, drying is in vacuum chamber at 80 DEG C dry 12 hours, obtains PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is 0.8:1.
See Fig. 2, as seen from Figure 2, because polyaniline is non-crystalline state, only containing BaFe in matrix material 12o 19and CoFe 2o 4two-phase, exists without other dephasign.
See Fig. 6, as seen from Figure 6, coercive field is 963.9 (Oe), and saturation magnetization is 17.6 (emu/g).
See Figure 10, as seen from Figure 10, have obvious absorption peak when 11.6 ~ 16.6 Gigahertz, reflection loss is-18dB to the maximum.
Embodiment 3
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, comprises the following steps:
1) by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O (citric acid) is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 7.3, the post-drying that stirs at 80 DEG C obtains xerogel; Again xerogel is ground, and calcine at 980 DEG C and be incubated 4 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.7;
2) by 0.5gxBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in the hydrochloric acid soln of the 1mol/L of 50mL, stirs after 50 minutes, adds aniline, obtain mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is 0.5g:0.5mL; X is 0.7;
3) ammonium persulphate being joined concentration is in 1mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.Mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of 10mL ammonium persulphate, react after 10 hours, adopt distilled water, ethanol repetitive scrubbing until filtrate is colourless, drying is in vacuum chamber at 70 DEG C dry 14 hours, obtains PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is 1:1.
See Fig. 3, as seen from Figure 10, have obvious absorption peak when 11.6 ~ 16.6 Gigahertz, reflection loss is-18dB to the maximum.
See Fig. 7, as seen from Figure 7, coercive field is 1481.2 (Oe), and saturation magnetization is 19.3 (emu/g).
See Figure 11, as seen from Figure 11, have obvious absorption peak when 11.7 ~ 14.2 Gigahertz, reflection loss is-27dB to the maximum.
Embodiment 4
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, comprises the following steps:
1) by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O (citric acid) is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 7.1, the post-drying that stirs at 82 DEG C obtains xerogel; Again xerogel is ground, and calcine at 1050 DEG C and be incubated 3.5 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.6;
2) by 0.4gxBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in the hydrochloric acid soln of the 1mol/L of 50mL, stirs after 60 minutes, adds aniline, obtain mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is 0.45g:0.5mL; X is 0.6;
3) ammonium persulphate being joined concentration is in 1mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.Mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of 10mL ammonium persulphate, react after 12 hours, adopt distilled water, ethanol repetitive scrubbing until filtrate is colourless, drying is in vacuum chamber at 60 DEG C dry 16 hours, obtains PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is 1.1:1.
See Fig. 4, as seen from Figure 4, because polyaniline is non-crystalline state, only containing BaFe in matrix material 12o 19and CoFe 2o 4two-phase, exists without other dephasign.
See Fig. 8, as seen from Figure 8, coercive field is 1026.6 (Oe), and saturation magnetization is 19.5 (emu/g).
See Figure 12, as seen from Figure 12, have obvious absorption peak when 11.4 ~ 15 Gigahertz, reflection loss is-41.5dB to the maximum.
Embodiment 5
A kind of Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, comprises the following steps:
1) by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O (citric acid) is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 6.9, the post-drying that stirs at 77 DEG C obtains xerogel; Again xerogel is ground, and calcine at 1080 DEG C and be incubated 4 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.6;
2) by 0.6gxBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in the hydrochloric acid soln of the 1mol/L of 50mL, stirs after 35 minutes, adds aniline, obtain mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is 0.6g:0.5mL; X is 0.6;
3) ammonium persulphate being joined concentration is in 1mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.Mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of 10mL ammonium persulphate, react after 13 hours, adopt distilled water, ethanol repetitive scrubbing until filtrate is colourless, drying is in vacuum chamber at 65 DEG C dry 15 hours, obtains PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is 1.2:1.

Claims (10)

1. a Polyaniline Doped BaFe 12o 19/ CoFe 2o 4absorbing material, is characterized in that, the Reactive Synthesis expression formula of this absorbing material is PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4, wherein x is mass percent, and x is 0.6 ~ 0.9.
2. a kind of Polyaniline Doped BaFe according to claim 1 12o 19/ CoFe 2o 4absorbing material, is characterized in that, the Reactive Synthesis expression formula of this absorbing material is PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4, wherein x is mass percent, and x is 0.7 ~ 0.9.
3. a kind of Polyaniline Doped BaFe according to claim 1 12o 19/ CoFe 2o 4absorbing material, is characterized in that, the Reactive Synthesis expression formula of this absorbing material is PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4, wherein x is mass percent, and x is 0.8 ~ 0.9.
4. a Polyaniline Doped BaFe 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, comprises the following steps:
1) by xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule is dissolved in hydrochloric acid soln, after stirring, adds aniline, obtains mixing solutions; Wherein, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of powder and aniline is (0.4 ~ 0.6) g:0.5mL; X is 0.6 ~ 0.9;
2) mixing solutions is continued under ice-water bath condition stir, then add the hydrochloric acid soln of ammonium persulphate, react after 8 ~ 15 hours, after washing, drying, obtain PANI/xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, the mol ratio of ammonium persulphate and aniline is (0.8 ~ 1.2): 1.
5. a kind of Polyaniline Doped BaFe according to claim 4 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, step 1) middle xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule obtains by the following method: by chemical general formula xBaFe 12o 19/ (1-x) CoFe 2o 4, by analytically pure Ba (NO 3), Co (NO 3) 26H 2o, Fe (NO 3) 39H 2o and C 6h 8o 7h 2o is dissolved in deionized water, C 6h 8o 7h 2the consumption of O is 3 times of the total amount of substance of metal ion, and then drip ammoniacal liquor adjust ph to 6.8 ~ 7.3, the post-drying that stirs at 75 ~ 85 DEG C obtains xerogel; Again xerogel is ground, and calcine at 950 ~ 1100 DEG C and be incubated 3 ~ 5 hours, obtain xBaFe 12o 19/ (1-x) CoFe 2o 4composite granule; Wherein, x is 0.6 ~ 0.9.
6. a kind of Polyaniline Doped BaFe according to claim 4 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, step 1) in stir time be 30 ~ 60 minutes.
7. a kind of Polyaniline Doped BaFe according to claim 4 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, step 1) in the concentration of hydrochloric acid soln be 1mol/L, xBaFe 12o 19/ (1-x) CoFe 2o 4the ratio of composite granule and hydrochloric acid soln is (0.4 ~ 0.6) g:50mL.
8. a kind of Polyaniline Doped BaFe according to claim 4 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, step 2) in the hydrochloric acid soln of ammonium persulphate obtain by the following method: ammonium persulphate being joined concentration is in 0.8 ~ 1.2mol/L hydrochloric acid soln, obtains the hydrochloric acid soln of ammonium persulphate.
9. a kind of Polyaniline Doped BaFe according to claim 4 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, step 2) in washing adopts distilled water, ethanol repetitive scrubbing is until filtrate is colourless.
10. a kind of Polyaniline Doped BaFe according to claim 4 12o 19/ CoFe 2o 4the preparation method of absorbing material, is characterized in that, step 2) in dry temperature be 50 ~ 80 DEG C, the dry time is 12 ~ 18 hours; Drying is carried out in vacuum chamber.
CN201511018240.5A 2015-12-29 2015-12-29 A polyaniline-doped BaFe<12>O<19>/CoFe2O4 wave-absorbing material and a preparing method thereof Pending CN105524273A (en)

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Publication number Priority date Publication date Assignee Title
CN108655411A (en) * 2017-03-31 2018-10-16 深圳光启高等理工研究院 The preparation method and antiradar coatings of absorbing material
CN110182852A (en) * 2019-04-26 2019-08-30 南京睿磐内尔环保复合新材料有限公司 A kind of method that chemical coprecipitation molten-salt growth method synthesizes soft-hard spin-exchange-coupled magnet

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Publication number Priority date Publication date Assignee Title
CN108655411A (en) * 2017-03-31 2018-10-16 深圳光启高等理工研究院 The preparation method and antiradar coatings of absorbing material
CN108655411B (en) * 2017-03-31 2022-04-01 深圳光启高等理工研究院 Preparation method of wave-absorbing material and wave-absorbing coating
CN110182852A (en) * 2019-04-26 2019-08-30 南京睿磐内尔环保复合新材料有限公司 A kind of method that chemical coprecipitation molten-salt growth method synthesizes soft-hard spin-exchange-coupled magnet
CN110182852B (en) * 2019-04-26 2022-01-07 南京睿磐内尔环保复合新材料有限公司 Method for synthesizing soft-hard exchange coupling magnet by chemical coprecipitation molten salt method

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