CN103232577A - Magnetic nanocomposite - Google Patents
Magnetic nanocomposite Download PDFInfo
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- CN103232577A CN103232577A CN2013101134263A CN201310113426A CN103232577A CN 103232577 A CN103232577 A CN 103232577A CN 2013101134263 A CN2013101134263 A CN 2013101134263A CN 201310113426 A CN201310113426 A CN 201310113426A CN 103232577 A CN103232577 A CN 103232577A
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Abstract
The invention discloses a magnetic nanocomposite, comprising the following components by weight: 10 to 25% of nanometer ferrite (Li0.15Zn0.7Fe2.15O4), 2 to 4% of nanometer magnesia, 1 to 6% of nanometer alumina and 1 to 4% of nanometer titanium oxide, with the balance being unsaturated polyester. The magnetic nanocomposite, a wave-absorbing material, has strong absorption characteristic for electromagnetic waves in a range of 0.1 to 12 GHz, is applicable to environments of different electromagnetic fields and prevents harm of electromagnetic radiation to a human body and influence of electromagnetic radiation on equipment.
Description
Technical field
The present invention relates to a kind of magnetic nanometer composite material, relate in particular to a kind of unsaturated polyester-magnetic nanoparticle-nano-oxide particle composite material, this material is applied to electromagnetic protection and electromagnetic compatibility field.
Background technology
Along with progress of science and technology, associated with each other and influence each other with electromagnetism conduction, electromagnetic induction and three kinds of modes of electromagnetic radiation between the various electronicss, can cause interferences, influence and endanger the equipment of operation and personnel under certain conditions.Electromagnetic field is transmitted energy with form of electromagnetic wave, utilizes electromagnetic wave absorbent material to make the electromagnetism wave energy be converted into heat energy or other forms of energy, is to remove the electromagnetic pollution effective means.Electromagnetic wave absorbent material also has purposes widely at military technique such as ECM and stealthy technique aspect in addition.Therefore, research and development electromagnet protective material is very necessary.
Summary of the invention
At the deficiencies in the prior art, the problem to be solved in the present invention provides a kind of polymer-based carbon magnetic composite, and this material has strong absorption characteristic to the hertzian wave in the 0.1-12GHz frequency range.
The magnetic composite that the present invention relates to, its component is by weight percent 10-25% nanometer ferrite (Li
0.15Zn
0.7Fe
2.15O4), the nano oxidized magnesium oxide of 2-4%, the 1-6% nano aluminium oxide, the unsaturated polyester of 1-4% nano-titanium oxide and surplus is formed.
Wherein: component is 15-25% nanometer ferrite (Li by weight percent preferably
0.15Zn
0.7Fe
2.15O4), the nano oxidized magnesium oxide of 2-3%, the 3-6% nano aluminium oxide, the unsaturated polyester of 2-4% nano-titanium oxide and surplus is formed.
Wherein: component is 20-25% nanometer ferrite (Li by weight percent preferably
0.15Zn
0.7Fe
2.15O4), the nano oxidized magnesium oxide of 3-4%, the 3-6% nano aluminium oxide, the unsaturated polyester of 3-4% nano-titanium oxide and surplus is formed.
Above-mentioned nanometer ferrite (Li
0.15Zn
0.7Fe
2.15O4) diameter is 50-100nm, the nano oxidized magnesium oxide 40-80nm of 2-4%, 1-6% nano aluminium oxide 30-100nm, 1-4% nano-titanium oxide 60-100nm.
Above-mentioned unsaturated polyester polyester refers to the miscible constituent of linear unsaturated polyester and vinyl monomer, also is called the cruel resin of unsaturated polyester, is called for short vibrin, and molecular weight is lower, general preferred 2000-3000.
Wherein: the title of commercially available universal unsaturated polyester and performance index thereof such as following table:
In above-mentioned unsaturated polyester, the preferred 191# unsaturated polyester of the present invention.
In above-mentioned electromagnetic wave absorption material, also can add dispersion agent, solidifying agent (also claiming initiator), promotor in the described component.
Commercially available initiator type commonly used and various types of performance and consumption such as following table thereof:
The kind of commercially available promotor commonly used and performance and consumption such as following table:
Wherein: the preferred PAA of above-mentioned dispersion agent (Polyacrylic Acid, polyacrylic acid), the preferred methylethyl ketone peroxide of solidifying agent (being initiator), the preferred cobalt salt of promotor, further preferred naphthoic acid cobalt, Xiao Suangu.
A kind of magnetic nanometer composite material preparation methods of the present invention, realized by following step:
Content is for taking by weighing 10-25% nanometer ferrite (Li at first, by mass percentage
0.15Zn
0.7Fe
2.15O4), the nano oxidized magnesium oxide of 2-4%, the 1-6% nano aluminium oxide, 1-4% nano-titanium oxide powder is put into stainless steel jar mill, add the alloy mill ball, wherein ratio of grinding media to material is 5～7: 1, in planetary ball mill ball milling 3-5 hour, rotating speed is 300 ± 50 rev/mins, the composite granule that obtains mixing.Be that 1: 40～80 blending ratios are mixed dispersion agent with the mixed powder that obtained just now with weight ratio then, and add in the acetone of its 3-5 times volume, at room temperature stirring mixed powder solution with the ultrasonic agitation device is uniformly dispersed to it, the powder mixing solutions is fully mixed with the unsaturated polyester of described amount, obtain the viscous solution of powder and polyester; In the viscous fluid of powder/polyester, add solidifying agent and the promotor of described amount, and inject mould and solidify, obtain absorbing material.
Embodiment
The present invention is further elaborated below in conjunction with embodiment, but the present invention protects content to be not limited only to described embodiment.
Embodiment 1:
Content is for taking by weighing 20% nanometer ferrite (Li at first, by mass percentage
0.15Zn
0.7Fe
2.15O4), 2% nano oxidized magnesium oxide, 1% nano aluminium oxide, 1-4% nano-titanium oxide powder is put into stainless steel jar mill, adds the alloy mill ball, and wherein ratio of grinding media to material is 6: 1, ball milling is 3 hours in planetary ball mill, and rotating speed is 300 ± 50 rev/mins, the composite granule that obtains mixing.Be that 1: 40 blending ratio is mixed dispersion agent with the mixed powder that obtained just now with weight ratio then, and add in the acetone of its 3 times of volumes, at room temperature stirring mixed powder solution with the ultrasonic agitation device is uniformly dispersed to it, the powder mixing solutions is fully mixed with the unsaturated polyester of described amount, obtain the viscous solution of powder and polyester; In the viscous fluid of powder/polyester, add solidifying agent and the promotor of described amount, and inject mould and solidify, obtain magnetic nanometer composite material.
Embodiment 2:
Content is for taking by weighing 20% nanometer ferrite (Li at first, by mass percentage
0.15Zn
0.7Fe
2.15O4), 3% nano oxidized magnesium oxide, 3% nano aluminium oxide, 2% nano-titanium oxide powder is put into stainless steel jar mill, adds the alloy mill ball, and wherein ratio of grinding media to material is 5: 1, ball milling is 4 hours in planetary ball mill, and rotating speed is 300 ± 50 rev/mins, the composite granule that obtains mixing.Be that 1: 60 blending ratio is mixed dispersion agent with the mixed powder that obtained just now with weight ratio then, and add in the acetone of its 4 times of volumes, at room temperature stirring mixed powder solution with the ultrasonic agitation device is uniformly dispersed to it, the powder mixing solutions is fully mixed with the unsaturated polyester of described amount, obtain the viscous solution of powder and polyester; In the viscous fluid of powder/polyester, add solidifying agent and the promotor of described amount, and inject mould and solidify, obtain magnetic nanometer composite material.
Embodiment 3:
Content is for taking by weighing 25% nanometer ferrite (Li at first, by mass percentage
0.15Zn
0.7Fe
2.15O4), 4% nano oxidized magnesium oxide, 6% nano aluminium oxide, 4% nano-titanium oxide powder is put into stainless steel jar mill, adds the alloy mill ball, and wherein ratio of grinding media to material is 7: 1, ball milling is 5 hours in planetary ball mill, and rotating speed is 300 ± 50 rev/mins, the composite granule that obtains mixing.Be that 1: 80 blending ratio is mixed dispersion agent with the mixed powder that obtained just now with weight ratio then, and add in the acetone of its 5 times of volumes, at room temperature stirring mixed powder solution with the ultrasonic agitation device is uniformly dispersed to it, the powder mixing solutions is fully mixed with the unsaturated polyester of described amount, obtain the viscous solution of powder and polyester; In the viscous fluid of powder/polyester, add solidifying agent and the promotor of described amount, and inject mould and solidify, obtain magnetic nanometer composite material.
Claims (1)
1. magnetic nanometer composite material, its component is 10-25% nanometer ferrite (Li by weight percent
0.15Zn
0.7Fe
2.15O4), the nano oxidized magnesium oxide of 2-4%, the 1-6% nano aluminium oxide, the unsaturated polyester of 1-4% nano-titanium oxide and surplus is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113426.3A CN103232577B (en) | 2013-04-02 | 2013-04-02 | A kind of magnetic nanometer composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310113426.3A CN103232577B (en) | 2013-04-02 | 2013-04-02 | A kind of magnetic nanometer composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103232577A true CN103232577A (en) | 2013-08-07 |
| CN103232577B CN103232577B (en) | 2016-03-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310113426.3A Expired - Fee Related CN103232577B (en) | 2013-04-02 | 2013-04-02 | A kind of magnetic nanometer composite material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353805A (en) * | 2016-05-09 | 2017-11-17 | 中国林业科学研究院木材工业研究所 | A kind of water-based UV woodwork coatings and preparation method thereof |
| CN110498998A (en) * | 2019-08-27 | 2019-11-26 | 罗春华 | A kind of electromagnetic shielding engineering plastics and preparation method with three-dimensional structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862709A (en) * | 2006-01-19 | 2006-11-15 | 山东大学 | Electromagnetic wave absorption material and preparing method thereof |
| CN101684044A (en) * | 2008-09-25 | 2010-03-31 | Tdk株式会社 | Mnznli system ferrite |
| CN102267810A (en) * | 2011-08-09 | 2011-12-07 | 中国科学院宁波材料技术与工程研究所 | Preparation method of high-density ferrite-carbon nanotube composite block material |
| CN102286805A (en) * | 2011-07-19 | 2011-12-21 | 江苏科技大学 | Li-Zn ferrite magnetic nanometer fiber and preparation method thereof |
-
2013
- 2013-04-02 CN CN201310113426.3A patent/CN103232577B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1862709A (en) * | 2006-01-19 | 2006-11-15 | 山东大学 | Electromagnetic wave absorption material and preparing method thereof |
| CN101684044A (en) * | 2008-09-25 | 2010-03-31 | Tdk株式会社 | Mnznli system ferrite |
| CN102286805A (en) * | 2011-07-19 | 2011-12-21 | 江苏科技大学 | Li-Zn ferrite magnetic nanometer fiber and preparation method thereof |
| CN102267810A (en) * | 2011-08-09 | 2011-12-07 | 中国科学院宁波材料技术与工程研究所 | Preparation method of high-density ferrite-carbon nanotube composite block material |
Non-Patent Citations (1)
| Title |
|---|
| 孙昌: "低频微波吸收剂的优选、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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353805A (en) * | 2016-05-09 | 2017-11-17 | 中国林业科学研究院木材工业研究所 | A kind of water-based UV woodwork coatings and preparation method thereof |
| CN110498998A (en) * | 2019-08-27 | 2019-11-26 | 罗春华 | A kind of electromagnetic shielding engineering plastics and preparation method with three-dimensional structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103232577B (en) | 2016-03-09 |
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Granted publication date: 20160309 Termination date: 20180402 |