CN103232577B - A kind of magnetic nanometer composite material - Google Patents
A kind of magnetic nanometer composite material Download PDFInfo
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- CN103232577B CN103232577B CN201310113426.3A CN201310113426A CN103232577B CN 103232577 B CN103232577 B CN 103232577B CN 201310113426 A CN201310113426 A CN 201310113426A CN 103232577 B CN103232577 B CN 103232577B
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- unsaturated polyester
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Abstract
The invention discloses a kind of magnetic nanometer composite material, its component is by weight percent 10-25% nanometer ferrite (Li
0.15zn
0.7fe
2.15O4), 2-4% nano magnesia, 1-6% nano aluminium oxide, the unsaturated polyester composition of 1-4% nano-titanium oxide and surplus.The hertzian wave of absorbing material of the present invention to 0.1-12GHz has stronger absorption characteristic.Under can being applied to the environment of different electromagnetic field, prevent the harm of electromagnetic radiation on human body and the impact on equipment.
Description
Technical field
The present invention relates to a kind of magnetic nanometer composite material, particularly relate to a kind of unsaturated polyester-magnetic nanoparticle-nano-oxide particle composite material, this materials application is in electromagnetic protection and field of electromagnetic compatibility.
Background technology
Along with the progress of science and technology, associated with each other and influence each other with electromagnetic conductive, electromagnetic induction and electromagnetic radiation three kinds of modes between various electronics, can interference, impact be caused on the equipment run and personnel and endanger under certain conditions.Electromagnetic field is transferring energy in the form of an electromagnetic wave, utilizes electromagnetic wave absorbent material to make electromagnetism wave energy be converted into heat energy or other forms of energy, is to remove electromagnetic pollution effective means.Electromagnetic wave absorbent material is at military technique in addition, and such as ECM and stealthy technique aspect also have purposes widely.Therefore, electromagnet protective material is researched and developed very necessary.
Summary of the invention
For the deficiencies in the prior art, the problem to be solved in the present invention is to provide a kind of Polymer-based Magnets, and this material has stronger absorption characteristic to the hertzian wave in 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%, 1-6% nano aluminium oxide, the unsaturated polyester composition of 1-4% nano-titanium oxide and surplus.
Wherein: component is preferably 15-25% nanometer ferrite (Li by weight percent
0.15zn
0.7fe
2.15O4), the nano oxidized magnesium oxide of 2-3%, 3-6% nano aluminium oxide, the unsaturated polyester composition of 2-4% nano-titanium oxide and surplus.
Wherein: component is preferably 20-25% nanometer ferrite (Li by weight percent
0.15zn
0.7fe
2.15O4), the nano oxidized magnesium oxide of 3-4%, 3-6% nano aluminium oxide, the unsaturated polyester composition of 3-4% nano-titanium oxide and surplus.
Above-mentioned nanometer ferrite (Li
0.15zn
0.7fe
2.15O4) diameter is 50-100nm, 2-4% nano oxidized magnesium oxide 40-80nm, 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, is also called the cruel resin of unsaturated polyester, and be called for short vibrin, molecular weight is lower, general preferred 2000-3000.
Wherein: the title of commercially available universal unsaturated polyester and performance index thereof are as following table:
In above-mentioned unsaturated polyester, the preferred 191# unsaturated polyester of the present invention.
In above-mentioned electromagnetic wave absorption material, in described component, also can add dispersion agent, solidifying agent (also claiming initiator), promotor.
Commercially available conventional initiator type and various types of performance thereof and consumption are as following table:
The kind of commercially available conventional promotor and performance and consumption are as following table:
Wherein: the preferred PAA of above-mentioned dispersion agent (PolyacrylicAcid, polyacrylic acid), solidifying agent (i.e. initiator) is methylethyl ketone peroxide preferably, the preferred cobalt salt of promotor, further preferred naphthoic acid cobalt, Jing Ti/Bao Pian COBALT NITRATE CRYSTALS/FLAKES.
The preparation method of a kind of magnetic nanometer composite material material of the present invention, is realized by following step:
First, by mass percentage content for taking 10-25% nanometer ferrite (Li
0.15zn
0.7fe
2.15O4), the nano oxidized magnesium oxide of 2-4%, 1-6% nano aluminium oxide, 1-4% nano titania puts into stainless steel jar mill, add alloy mill ball, wherein ratio of grinding media to material is 5 ~ 7: 1, ball milling 3-5 hour in planetary ball mill, rotating speed is 300 ± 50 revs/min, obtains the composite granule mixed.Then be that dispersion agent mixes with the mixed powder just now obtained by 1: 40 ~ 80 blending ratios with weight ratio, and add in the acetone of its 3-5 times volume, at room temperature stir mixed powder solution with ultrasonic stirrer to be uniformly dispersed to it, the unsaturated polyester of powder mixing solutions with described amount is fully mixed, obtains 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
Below in conjunction with embodiment, the present invention is further elaborated, but the present invention protects content to be not limited only to described embodiment.
Embodiment 1:
First, by mass percentage content for taking 20% nanometer ferrite (Li
0.15zn
0.7fe
2.15O4), 2% nano oxidized magnesium oxide, 1% nano aluminium oxide, 1-4% nano titania puts into stainless steel jar mill, adds alloy mill ball, and wherein ratio of grinding media to material is 6: 1, ball milling 3 hours in planetary ball mill, rotating speed is 300 ± 50 revs/min, obtains the composite granule mixed.Then be that dispersion agent mixes with the mixed powder just now obtained by 1: 40 blending ratio with weight ratio, and add in the acetone of its 3 times of volumes, at room temperature stir mixed powder solution with ultrasonic stirrer to be uniformly dispersed to it, the unsaturated polyester of powder mixing solutions with described amount is fully mixed, obtains 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:
First, by mass percentage content for taking 20% nanometer ferrite (Li
0.15zn
0.7fe
2.15O4), 3% nano oxidized magnesium oxide, 3% nano aluminium oxide, 2% nano titania puts into stainless steel jar mill, adds alloy mill ball, and wherein ratio of grinding media to material is 5: 1, ball milling 4 hours in planetary ball mill, rotating speed is 300 ± 50 revs/min, obtains the composite granule mixed.Then be that dispersion agent mixes with the mixed powder just now obtained by 1: 60 blending ratio with weight ratio, and add in the acetone of its 4 times of volumes, at room temperature stir mixed powder solution with ultrasonic stirrer to be uniformly dispersed to it, the unsaturated polyester of powder mixing solutions with described amount is fully mixed, obtains 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:
First, by mass percentage content for taking 25% nanometer ferrite (Li
0.15zn
0.7fe
2.15O4), 4% nano oxidized magnesium oxide, 6% nano aluminium oxide, 4% nano titania puts into stainless steel jar mill, adds alloy mill ball, and wherein ratio of grinding media to material is 7: 1, ball milling 5 hours in planetary ball mill, rotating speed is 300 ± 50 revs/min, obtains the composite granule mixed.Then be that dispersion agent mixes with the mixed powder just now obtained by 1: 80 blending ratio with weight ratio, and add in the acetone of its 5 times of volumes, at room temperature stir mixed powder solution with ultrasonic stirrer to be uniformly dispersed to it, the unsaturated polyester of powder mixing solutions with described amount is fully mixed, obtains 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. a magnetic nanometer composite material, it is characterized in that, this matrix material presents magnetic, be composited by unsaturated polyester-magnetic nanoparticle-nano-oxide particulate, have stronger absorption characteristic to the hertzian wave in 0.1-12GHz frequency range, its component is 10-25% nanometer ferrite Li by weight percent
0.15zn
0.7fe
2.15o
4, 2-4% nano magnesia, 1-6% nano aluminium oxide, the unsaturated polyester composition of 1-4% nano-titanium oxide and surplus.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN103232577A CN103232577A (en) | 2013-08-07 |
| CN103232577B true CN103232577B (en) | 2016-03-09 |
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| CN201310113426.3A Expired - Fee Related CN103232577B (en) | 2013-04-02 | 2013-04-02 | A kind of magnetic nanometer composite material |
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Families Citing this family (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 |
| CN110498998B (en) * | 2019-08-27 | 2021-12-24 | 宁波坚锋新材料有限公司 | Electromagnetic shielding engineering plastic with three-dimensional structure and preparation method thereof |
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 |
|---|
| 低频微波吸收剂的优选、制备及性能研究;孙昌;《中国博士学位论文全文数据库-工程科技I辑》;20070915(第3期);说明书第22-23页，第38页 * |
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