CN107974733A - The preparation method and absorbent structure of a kind of absorbing material - Google Patents
The preparation method and absorbent structure of a kind of absorbing material Download PDFInfo
- Publication number
- CN107974733A CN107974733A CN201610920380.XA CN201610920380A CN107974733A CN 107974733 A CN107974733 A CN 107974733A CN 201610920380 A CN201610920380 A CN 201610920380A CN 107974733 A CN107974733 A CN 107974733A
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- China
- Prior art keywords
- absorbing material
- preparation
- pan
- iron powder
- composite filaments
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
- D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
Abstract
This application discloses the preparation method and absorbent structure of a kind of absorbing material, the method comprising the steps of：(1), mixed by raw material of acrylonitrile, itaconic acid, azodiisobutyronitrile and dimethyl sulfoxide (DMSO), when polymerization 18~36 is small under the conditions of 40~60 DEG C, obtain PAN polymer fluid of the solid content 18~25%；(2), nanometer iron powder, reduced iron powder are added in PAN polymer fluids, ultrasonic disperse 15~25 minutes under the conditions of 40~60 DEG C, as spinning solution；(3), PAN composite filaments are prepared by wet spinning technology；(4), PAN composite filaments are when 200~250 DEG C of pre-oxidation 1.2~2 are small；(5), under a shielding gas, PAN composite filaments carry out carbonization treatment at 600~700 DEG C；(6), room temperature, grind into powder are reduced to.Material prepared by the present invention has excellent absorbing property, and in 11~17GHz frequency ranges, which is less than 10dB, and effective Absorber Bandwidth is 6GHz.It can effectively achieve the purpose that electromagnetic wave of decaying.
Description
Technical field
The application belongs to field of material technology, more particularly to the preparation method and absorbent structure of a kind of absorbing material.
Background technology
It is extensive to having obtained at present during the development of electromagnetic-wave absorbent and application technology come from World War II
Ground application.Nowadays, with the development of electronic science and technology, the application range of electromagnetic-wave absorbent far beyond military field,
It is also increasingly extensive in the application of the civilian aspects such as information propagation, electromagnetic compatibility, microwave radiation protecting.
The content of the invention
It is an object of the invention to provide the preparation method and absorbent structure of a kind of absorbing material, to overcome in the prior art
Deficiency.
To achieve the above object, the present invention provides following technical solution：
The embodiment of the present application discloses a kind of preparation method of absorbing material, including step：
(1), mixed by raw material of acrylonitrile, itaconic acid, azodiisobutyronitrile and dimethyl sulfoxide (DMSO), in 40~60 DEG C of conditions
When lower polymerization 18~36 is small, PAN polymer fluid of the solid content 18~25% is obtained；
(2), nanometer iron powder, reduced iron powder are added in PAN polymer fluids, under the conditions of 40~60 DEG C ultrasonic disperse 15~
25 minutes, as spinning solution；
(3), PAN composite filaments are prepared by wet spinning technology；
(4), PAN composite filaments are when 200~250 DEG C of pre-oxidation 1.2~2 are small；
(5), under a shielding gas, PAN composite filaments carry out carbonization treatment at 600~700 DEG C；
(6), room temperature, grind into powder are reduced to.
Preferably, in the preparation method of above-mentioned absorbing material, in the step (2), the preparation method of nanometer iron powder
Including：Ferric nitrate, alanine are dissolved in deionized water, are configured to solution；The solution being made into is heated, obtains precursor
End；Obtained precursor powder is placed in stove, is passed through argon gas and hydrogen, when 500~700 DEG C of reductase 12~4 are small, is received
Rice iron powder.
Preferably, in the preparation method of above-mentioned absorbing material, the molar ratio of the ferric nitrate and alanine is 1:
(0.25~5).
Preferably, in the preparation method of above-mentioned absorbing material, in the step (5), protective gas is nitrogen or argon
Gas.
The embodiment of the present application also discloses a kind of absorbent structure, including metallic matrix and is formed at metal base surface
Absorbing material layer, which uses the absorbing material, and the thickness of the absorbing material layer is 1.8~2.2mm.
Compared with prior art, the advantage of the invention is that：Material prepared by the present invention has excellent absorbing property,
In 11~17GHz frequency ranges, which is less than -10dB, and effective Absorber Bandwidth is 6GHz.Decay can effectively be reached
The purpose of electromagnetic wave.
Embodiment
The present invention is described further by the following example：According to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that embodiment described specific material ratio, process conditions and its result are only used
In the explanation present invention, without the present invention described in detail in claims should will not be limited.
In the present embodiment, the preparation method of absorbing material
(1), mixed by raw material of acrylonitrile, itaconic acid, azodiisobutyronitrile and dimethyl sulfoxide (DMSO), in 40~60 DEG C of conditions
When lower polymerization 18~36 is small, PAN polymer fluid of the solid content 18~25% is obtained；
(2), nanometer iron powder, reduced iron powder are added in PAN polymer fluids, under the conditions of 40~60 DEG C ultrasonic disperse 15~
25 minutes, as spinning solution；
The preparation of nanometer iron powder：Ferric nitrate, alanine are dissolved in deionized water according to a certain percentage, are configured to solution,
Wherein the molar ratio of ferric nitrate and alanine is 1:(0.25~5)；The solution being made into is heated, obtains precursor powder；Will
To precursor powder be placed in stove, be passed through argon gas and hydrogen, when 500~700 DEG C of reductase 12~4 are small, obtain nanometer iron powder.
(3), PAN composite filaments are prepared by wet spinning technology；
(4), PAN composite filaments are when 200~250 DEG C of pre-oxidation 1.2~2 are small；
(5), under a shielding gas, PAN composite filaments carry out carbonization treatment at 600~700 DEG C, protective gas for nitrogen or
Argon gas；
(6), room temperature, grind into powder are reduced to.
By the powder in above-described embodiment metal base surface formed 1.8~2.2mm coating, to its absorbing property into
Row detection understands that the material prepared by the present embodiment has excellent absorbing property, and in 11~17GHz frequency ranges, the material is anti-
Penetrate loss and be less than -10dB, effective Absorber Bandwidth is 6GHz.It can effectively achieve the purpose that electromagnetic wave of decaying.
Finally, it is to be noted that, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method, article or equipment including a series of elements not only include those key elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Key element.
Claims (5)
1. a kind of preparation method of absorbing material, it is characterised in that including step：
(1), mix by raw material of acrylonitrile, itaconic acid, azodiisobutyronitrile and dimethyl sulfoxide (DMSO), gather under the conditions of 40~60 DEG C
When conjunction 18~36 is small, PAN polymer fluid of the solid content 18~25% is obtained；
(2), nanometer iron powder, reduced iron powder are added in PAN polymer fluids, 15~25 points of ultrasonic disperse under the conditions of 40~60 DEG C
Clock, as spinning solution；
(3), PAN composite filaments are prepared by wet spinning technology；
(4), PAN composite filaments are when 200~250 DEG C of pre-oxidation 1.2~2 are small；
(5), under a shielding gas, PAN composite filaments carry out carbonization treatment at 600~700 DEG C；
(6), room temperature, grind into powder are reduced to.
2. the preparation method of absorbing material according to claim 1, it is characterised in that：In the step (2), nanometer iron powder
Preparation method include：Ferric nitrate, alanine are dissolved in deionized water, are configured to solution；The solution being made into is heated, is obtained
Precursor powder；Obtained precursor powder is placed in stove, is passed through argon gas and hydrogen, it is small 500~700 DEG C of reductase 12~4
When, obtain nanometer iron powder.
3. the preparation method of absorbing material according to claim 2, it is characterised in that：The ferric nitrate and alanine rub
You are than being 1:(0.25~5).
4. the preparation method of absorbing material according to claim 1, it is characterised in that：In the step (5), protective gas
For nitrogen or argon gas.
5. a kind of absorbent structure, it is characterised in that including metallic matrix and be formed at the absorbing material of metal base surface
Layer, the absorbing material layer using any absorbing material of Claims 1-4, the thickness of the absorbing material layer for 1.8~
2.2mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610920380.XA CN107974733A (en) | 2016-10-21 | 2016-10-21 | The preparation method and absorbent structure of a kind of absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610920380.XA CN107974733A (en) | 2016-10-21 | 2016-10-21 | The preparation method and absorbent structure of a kind of absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107974733A true CN107974733A (en) | 2018-05-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610920380.XA Withdrawn CN107974733A (en) | 2016-10-21 | 2016-10-21 | The preparation method and absorbent structure of a kind of absorbing material |
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| CN (1) | CN107974733A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836904A (en) * | 2019-10-14 | 2020-02-25 | 江苏宝纳电磁新材料有限公司 | Screening method for improving dispersion wettability of flaky wave-absorbing powder |
| CN114318884A (en) * | 2022-01-06 | 2022-04-12 | 江苏戍卫新材料科技有限公司 | Wave-absorbing pseudo-cloth and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382623A (en) * | 2011-08-02 | 2012-03-21 | 山东大学 | Preparation method of carbon-based composite wave-absorbing material |
| CN104525967A (en) * | 2014-12-17 | 2015-04-22 | 北京科技大学 | Nanoscale iron powder preparation method |
| CN104831421A (en) * | 2015-05-26 | 2015-08-12 | 扬州大学 | Preparation method of microwave absorbent based on acrylonitrile copolymer based carbon nanofiber felt |
| CN105170971A (en) * | 2015-08-25 | 2015-12-23 | 苏州睿智同策广告有限公司 | Preparation method of wave-absorbing material |
-
2016
- 2016-10-21 CN CN201610920380.XA patent/CN107974733A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382623A (en) * | 2011-08-02 | 2012-03-21 | 山东大学 | Preparation method of carbon-based composite wave-absorbing material |
| CN104525967A (en) * | 2014-12-17 | 2015-04-22 | 北京科技大学 | Nanoscale iron powder preparation method |
| CN104831421A (en) * | 2015-05-26 | 2015-08-12 | 扬州大学 | Preparation method of microwave absorbent based on acrylonitrile copolymer based carbon nanofiber felt |
| CN105170971A (en) * | 2015-08-25 | 2015-12-23 | 苏州睿智同策广告有限公司 | Preparation method of wave-absorbing material |
Non-Patent Citations (1)
| Title |
|---|
| 王雯: "碳基复合吸波材料的制备及性能研究", 《中国博士学位论文全文数据库 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836904A (en) * | 2019-10-14 | 2020-02-25 | 江苏宝纳电磁新材料有限公司 | Screening method for improving dispersion wettability of flaky wave-absorbing powder |
| CN110836904B (en) * | 2019-10-14 | 2022-07-26 | 江苏宝纳电磁新材料有限公司 | Screening method for improving dispersion wettability of flaky wave-absorbing powder |
| CN114318884A (en) * | 2022-01-06 | 2022-04-12 | 江苏戍卫新材料科技有限公司 | Wave-absorbing pseudo-cloth and preparation method thereof |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180501 |
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