CN102070932A - Wideband wave absorbing material and application thereof - Google Patents
Wideband wave absorbing material and application thereof Download PDFInfo
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- CN102070932A CN102070932A CN 201110007215 CN201110007215A CN102070932A CN 102070932 A CN102070932 A CN 102070932A CN 201110007215 CN201110007215 CN 201110007215 CN 201110007215 A CN201110007215 A CN 201110007215A CN 102070932 A CN102070932 A CN 102070932A
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Abstract
The invention belongs to the field of preparation of wave absorbing materials, and relates to a wideband wave absorbing material and application thereof, in particular to a wideband wave absorbing material prepared from a porous electric loss substance and application thereof. The invention relates to a wideband wave absorbing material prepared from a porous electric loss substance, which is characterized in that (1) the material is a particle of which the particle size is 10-100 mu m; (2) the electric conductivity of the material is 10<-3>-10<3> S/cm; and (3) the material particle is in a porous structure, and the pore volume is 0.1-1 cm<3>/g, wherein the sizes of 10-30% by volume of the pores are 1-10 mu m, and the sizes of the rest pores are less than 1 mu m. 4-20% by mass of the material can be added to a matrix substance to prepare a wave absorbing coating or wave absorbing composite material, and the wave absorbing coating or wave absorbing composite material can absorb electromagnetic waves within the wide wave band range of 2-20 GHz. The invention solves the problem of narrow bandwidth of the wave absorbing material in the prior art, and overcomes the defect that the prior art can not adapt to wider application range.
Description
Technical field
The invention belongs to the preparation field of absorbing material, relate to a kind of wideband absorbing material and application thereof, particularly relate to a kind of wideband absorbing material and application thereof that utilizes porous electrical loss material to make.
Background technology
Absorbing material has important application at aspects such as electromagnetic radiation protection, electromagnetic shielding and stealth materials, generally is to be made by the material with electrical loss or magnetic loss.These suction ripple materials often are added to makes microwave absorbing coating or Wave suction composite material in coating or the body material, yet, these inhale wave apparatus often the narrow shortcoming of the ripple frequency band of suction, even its reflection loss can reach very low peak value, but-the reflection loss smaller bandwidth of 10dB.And we know that hertzian wave such as radar wave have the frequency band of broad, only one of them very narrow scope are had strong absorption, also do not reach application purpose.
The present invention has considered the pattern of inhaling ripple material itself, proposes with electrical loss material with vesicular structure as absorbing material, to solve the wideband absorption problem of wave absorbing agent.
Summary of the invention
The objective of the invention is to provide a kind of wideband absorbing material and application thereof, solve the problem of the absorbing material smaller bandwidth of prior art, remedy the deficiency that prior art can't adapt to the range of application of broad.The present invention starts with from the pattern of inhaling ripple material itself, proposes with electrical loss material with vesicular structure to have solved the wideband absorption problem of wave absorbing agent as absorbing material.
A kind of wideband absorbing material of the present invention:
(1) described wideband absorbing material is the particle of particle diameter in 10～100 mu m ranges;
(2) specific conductivity of described wideband absorbing material is 10
-3～10
3S/cm;
(3) described wideband absorbing material particle is a vesicular structure, and pore volume is 0.1～1cm
3/ g, percentage calculation by volume wherein, the aperture of 10～30% hole is in 1～10 mu m range, and remaining hole aperture is less than 1 μ m.
As optimized technical scheme:
Wherein, aforesaid a kind of wideband absorbing material, the material of described wideband absorbing material is porous carbon, porous polyaniline or porous polypyrrole.
The present invention also provides a kind of application of wideband absorbing material, described wideband absorbing material joins with the addition of 4～20% mass percent and makes microwave absorbing coating or Wave suction composite material in the base matter, and described microwave absorbing coating or Wave suction composite material present wideband to the hertzian wave of 2～20GHz wave band and absorb.
The application of aforesaid a kind of wideband absorbing material, described base matter are thermosetting resin or thermoplastic resin; Wherein said thermosetting resin is unsaturated polyester resin, Resins, epoxy or resol, and described thermoplastic resin is polypropylene, polyethylene, polyester, polymeric amide or polyether-ether-ketone.
Beneficial effect
With above-mentioned absorbing material with the addition with 4～20% (mass ratioes) join make microwave absorbing coating or Wave suction composite material in the base matter after, can present wideband to the hertzian wave of 2～20GHz wave band and absorb.
Embodiment
Below in conjunction with embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
A kind of wideband absorbing material of the present invention:
(1) described wideband absorbing material is the particle of particle diameter in 10～100 mu m ranges;
(2) specific conductivity of described wideband absorbing material is 10
-3～10
3S/cm;
(3) described wideband absorbing material particle is a vesicular structure, and pore volume is 0.1～1cm
3/ g, percentage calculation by volume wherein, the aperture of 10～30% hole is in 1～10 mu m range, and remaining hole aperture is less than 1 μ m.
Wherein, aforesaid a kind of wideband absorbing material, the material of described wideband absorbing material is porous carbon, porous polyaniline or porous polypyrrole.
The present invention also provides a kind of application of wideband absorbing material, described wideband absorbing material joins with the addition to 4～20% mass percent and makes microwave absorbing coating or Wave suction composite material in the base matter, and described microwave absorbing coating or Wave suction composite material present wideband to the hertzian wave of 2～20GHz wave band and absorb.
The application of aforesaid a kind of wideband absorbing material, described base matter are thermosetting resin or thermoplastic resin; Wherein said thermosetting resin is unsaturated polyester resin, Resins, epoxy or resol, and described thermoplastic resin is polypropylene, polyethylene, polyester, polymeric amide or polyether-ether-ketone.
Embodiment 1
With the porous carbon fiber that polyacrylonitrile, polymethylmethacrylate co-blended spinning and high temperature cabonization obtain, pore morphology mainly is divided into two kinds, and a kind of is than macroscopic void, and its aperture is about 5 μ m; Another kind of is than small holes, and the aperture is less than 1 μ m, 80% quantity be in the scope of 0.2～0.5 μ m than the small holes aperture; Whole pore volume is 0.54cm
3/ g, specific conductivity is 1000S/cm.Join in epoxy resin-matrix with the addition of 8wt% this porous carbon fiber and make 180mm * 180mm, thickness is the matrix material sample of 3mm, the peak value of its reflection loss is-19.8dB after tested, respective frequencies is 10.27GHz, and the reflection loss in 8.9～12GHz frequency range all is lower than-10dB, presents good wideband wave-absorbing effect.
Embodiment 2
Polyaniline spherulitic particle so that letex polymerization obtains forms the micropore less than 1 μ m by displacement emulsifying agent/doping agent Sodium dodecylbenzene sulfonate, and polyaniline particle cluster coalescence forms the cavity network that is of a size of 0.5～7 μ m simultaneously, and whole pore volume is 0.31cm
3/ g; Its specific conductivity is 10S/cm.Join in bisphenol A-type unsaturated polyester resin base with the addition of 15wt% this polyaniline and make 180mm * 180mm, thickness is the matrix material sample of 3mm, the peak value of its reflection loss is-20.7dB after tested, respective frequencies is 9.8GHz, and the reflection loss in 8.4～11.6GHz frequency range all is lower than-10dB, presents good wideband wave-absorbing effect.
Implementation column 3
With the tubulose polypyrrole that the template polymerization obtains, there is the micropore of taking measurements greatly in 0.1～0.6 mu m range in the hollow caliber on the tube wall simultaneously between 0.8～2.5 μ m, and whole pore volume is 0.62cm
3/ g; Its specific conductivity is 0.1S/cm.Join in epoxy resin-matrix with 20% addition this polypyrrole and make 180mm * 180mm, thickness is the matrix material sample of 2mm, its minimal reflection loss is-29.5dB after tested, be lower than-bandwidth of 10dB is 12.4～18GHz, presents good wideband wave-absorbing effect.
Embodiment 4
With the porous carbon fiber that polyacrylonitrile, polymethylmethacrylate co-blended spinning and high temperature cabonization obtain, pore morphology mainly is divided into two kinds, and a kind of is than macroscopic void, and its aperture is about 5 μ m; Another kind of is than small holes, and the aperture is less than 1 μ m, 80% quantity be in the scope of 0.2～0.5 μ m than the small holes aperture; Whole pore volume is 0.54cm
3/ g, specific conductivity is 100S/cm.With this porous carbon fiber with the addition of 4wt% join alkyd resin based in and make 180mm * 180mm, thickness is the matrix material sample of 3mm, the peak value of its reflection loss is-12.1dB after tested, respective frequencies is 10.18GHz, and the reflection loss in 9.5～11GHz frequency range all is lower than-10dB.
Embodiment 5
With the porous carbon fiber that polyacrylonitrile, polymethylmethacrylate co-blended spinning and high temperature cabonization obtain, pore morphology mainly is divided into two kinds, and a kind of is than macroscopic void, and its aperture is about 2 μ m; Another kind of is than small holes, and the aperture is less than 1 μ m, 90% quantity be in the scope of 0.2～0.5 μ m than the small holes aperture; Whole pore volume is 0.2cm
3/ g, specific conductivity is 1000S/cm.Join in polypropylene-base with the addition of 6wt% this porous carbon fiber and make 180mm * 180mm, thickness is the matrix material sample of 3mm, the peak value of its reflection loss is-14.38dB after tested, respective frequencies is 10.2GHz, and the reflection loss in 9.57～11.5GHz frequency range all is lower than-10dB.
Embodiment 6
With the tubulose polyaniline that the template polymerization obtains, there is the micropore of taking measurements greatly in 0.2～0.7 mu m range in the hollow caliber on the tube wall simultaneously between 0.5～1.2 μ m, and whole pore volume is about 1cm
3/ g; Its specific conductivity is 0.1S/cm.Join in polyvinyl with 20% addition this polyaniline and make 180mm * 180mm, thickness is the matrix material sample of 2mm, its minimal reflection loss is-26.5dB after tested, be lower than-bandwidth of 10dB is 8.5～12.4GHz, presents good wideband wave-absorbing effect.
Embodiment 7
With the tubulose polypyrrole that the template polymerization obtains, there is the micropore of taking measurements greatly in 0.1～0.4 mu m range in the hollow caliber on the tube wall simultaneously between 0.2～1 μ m, and whole pore volume is about 0.8cm
3/ g; Its specific conductivity is 0.0203S/cm.Join in polyethylene terephthalate base with 20% addition this polypyrrole and make 180mm * 180mm, thickness is the matrix material sample of 2mm, its minimal reflection loss is-24.5dB after tested, respective frequencies is 9.76GHz, be lower than-bandwidth of 10dB is 8.2～11.9GHz, presents good wideband wave-absorbing effect.
Embodiment 8
With the tubulose polypyrrole that the template polymerization obtains, there is the micropore of taking measurements greatly in 0.1～0.4 mu m range in the hollow caliber on the tube wall simultaneously between 0.2～1 μ m, and whole pore volume is 0.8cm
3/ g; Its specific conductivity is 0.0203S/cm.Join in polyethylene terephthalate base with 16% addition this polypyrrole and make 180mm * 180mm, thickness is the matrix material sample of 2mm, its minimal reflection loss is-14.64dB after tested, respective frequencies is 14.48GHz, be lower than-bandwidth of 10dB is 11.76～16.64GHz, presents good wideband wave-absorbing effect.
Embodiment 9
With the porous carbon fiber that polyacrylonitrile, polymethylmethacrylate co-blended spinning and high temperature cabonization obtain, pore morphology mainly is divided into two kinds, and a kind of is than macroscopic void, and its aperture is about 5 μ m; Another kind of is than small holes, and the aperture is less than 1 μ m, 80% quantity be in the scope of 0.2～0.5 μ m than the small holes aperture; Whole pore volume is 0.54cm
3/ g, specific conductivity is 1000S/cm.Join in polyether-ether-ketone base with the addition of 10wt% this porous carbon fiber and make 180mm * 180mm, thickness is the matrix material sample of 3mm, the peak value of its reflection loss is-21.3dB after tested, respective frequencies is 11.2GHz, and the reflection loss in 9.1～12.2GHz frequency range all is lower than-10dB, presents good wideband wave-absorbing effect.
Claims (4)
1. wideband absorbing material is characterized in that:
(1) described wideband absorbing material is the particle of particle diameter in 10～100 mu m ranges;
(2) specific conductivity of described wideband absorbing material is 10
-3～10
3S/cm;
(3) described wideband absorbing material particle is a vesicular structure, and pore volume is 0.1～1cm
3/ g, percentage calculation by volume wherein,
The aperture of 10～30% hole is in 1～10 mu m range, and remaining hole aperture is less than 1 μ m.
2. a kind of wideband absorbing material according to claim 1 is characterized in that, the material of described wideband absorbing material is porous carbon, porous polyaniline or porous polypyrrole.
3. the application of a kind of wideband absorbing material according to claim 1, it is characterized in that: described wideband absorbing material joins with the addition of 4～20% mass percent and makes microwave absorbing coating or Wave suction composite material in the base matter, and described microwave absorbing coating or Wave suction composite material present wideband to the hertzian wave of 2～20GHz wave band and absorb.
4. the application of a kind of wideband absorbing material according to claim 3 is characterized in that, described base matter is thermosetting resin or thermoplastic resin; Wherein said thermosetting resin is unsaturated polyester resin, Resins, epoxy or resol, and described thermoplastic resin is polypropylene, polyethylene, polyester, polymeric amide or polyether-ether-ketone.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694810A (en) * | 2016-04-27 | 2016-06-22 | 南京航空航天大学 | Method for preparing CuO/porous carbon composite wave-absorbing material with ZIF-67 as template |
| CN106519959A (en) * | 2016-11-17 | 2017-03-22 | 无锡市长安曙光手套厂 | Electromagnetic shielding coating |
| CN107916064A (en) * | 2017-12-20 | 2018-04-17 | 航天科工武汉磁电有限责任公司 | One kind inhales ripple powdery paints and preparation method thereof |
| CN108530878A (en) * | 2018-04-27 | 2018-09-14 | 南京恒新新材料有限公司 | A kind of porous polyaniline wave absorbing agent and preparation method thereof |
| CN112521743A (en) * | 2020-11-12 | 2021-03-19 | 国网山西省电力公司电力科学研究院 | Composite material of electromagnetic shielding layer of power frequency electric field probe |
| CN115386337A (en) * | 2022-08-12 | 2022-11-25 | 许昌学院 | Chiral polyaniline/biomass-derived porous carbon composite wave-absorbing material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5892476A (en) * | 1984-05-21 | 1999-04-06 | Spectro Dynamics Systems, L.P. | Electromagnetic radiation absorptive composition containing inorganic coated microparticles |
| CN101323445A (en) * | 2008-06-13 | 2008-12-17 | 东华大学 | Method for preparing porous carbon material based on alkali lignose |
| CN101412839A (en) * | 2008-11-18 | 2009-04-22 | 东华大学 | Method for preparing microwave-absorbing composite material from polyacrylonitrile (PAN)-based nano carbon fibre |
-
2011
- 2011-01-14 CN CN 201110007215 patent/CN102070932A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5892476A (en) * | 1984-05-21 | 1999-04-06 | Spectro Dynamics Systems, L.P. | Electromagnetic radiation absorptive composition containing inorganic coated microparticles |
| CN101323445A (en) * | 2008-06-13 | 2008-12-17 | 东华大学 | Method for preparing porous carbon material based on alkali lignose |
| CN101412839A (en) * | 2008-11-18 | 2009-04-22 | 东华大学 | Method for preparing microwave-absorbing composite material from polyacrylonitrile (PAN)-based nano carbon fibre |
Non-Patent Citations (3)
| Title |
|---|
| 《东华大学学报(自然科学版)》 20091215 吴洪远等 利用可再生模版制备聚吡咯纳/微米管 615-620 2 第35卷, 第6期 2 * |
| 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 20100815 张亮 共混法制备纳米碳纤维和多孔碳纤维及其吸波性能的研究 23-36,37-40,51-53 1-4 , 第8期 2 * |
| 《无机材料学报》 20080515 谢炜等 短切中空多孔碳纤维复合材料的吸波性能 481-485 1-4 第23卷, 第3期 2 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694810A (en) * | 2016-04-27 | 2016-06-22 | 南京航空航天大学 | Method for preparing CuO/porous carbon composite wave-absorbing material with ZIF-67 as template |
| CN105694810B (en) * | 2016-04-27 | 2018-01-19 | 南京航空航天大学 | A kind of method that CuO/ porous carbon composite wave-suction materials are prepared for template with ZIF 67 |
| CN106519959A (en) * | 2016-11-17 | 2017-03-22 | 无锡市长安曙光手套厂 | Electromagnetic shielding coating |
| CN107916064A (en) * | 2017-12-20 | 2018-04-17 | 航天科工武汉磁电有限责任公司 | One kind inhales ripple powdery paints and preparation method thereof |
| CN108530878A (en) * | 2018-04-27 | 2018-09-14 | 南京恒新新材料有限公司 | A kind of porous polyaniline wave absorbing agent and preparation method thereof |
| CN112521743A (en) * | 2020-11-12 | 2021-03-19 | 国网山西省电力公司电力科学研究院 | Composite material of electromagnetic shielding layer of power frequency electric field probe |
| CN115386337A (en) * | 2022-08-12 | 2022-11-25 | 许昌学院 | Chiral polyaniline/biomass-derived porous carbon composite wave-absorbing material and preparation method thereof |
| CN115386337B (en) * | 2022-08-12 | 2023-09-08 | 许昌学院 | Chiral polyaniline/biomass derived porous carbon composite wave-absorbing material and preparation method thereof |
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Application publication date: 20110525 |