CN102807801A - Anti-radar coating and preparation method thereof - Google Patents
Anti-radar coating and preparation method thereof Download PDFInfo
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- CN102807801A CN102807801A CN2011101798250A CN201110179825A CN102807801A CN 102807801 A CN102807801 A CN 102807801A CN 2011101798250 A CN2011101798250 A CN 2011101798250A CN 201110179825 A CN201110179825 A CN 201110179825A CN 102807801 A CN102807801 A CN 102807801A
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- epoxy resin
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Abstract
The invention provides an anti-radar coating, which comprises a carbon nanotube, a carbon nanotube dispersing agent, conductive carbon black, an epoxy resin, an epoxy resin diluent and an epoxy resin curing agent, wherein the carbon nanotube accounts for 5% to 20% of the mass of the epoxy resin. By using the anti-radar coating provided by the invention, the requirements of high absorption, excellent compatibility and wide frequency band can be met to the utmost extent, and the selectivity of electromagnetic parameters of the anti-radar coating can be improved, so that the application range of the anti-radar coating is wider.
Description
[technical field]
The present invention relates to the absorbing material field, relate to hertzian wave antiradar coatings and technology of preparing thereof particularly.
[background technology]
Antiradar coatings mainly contains following several kinds both at home and abroad at present:
Ferrite antiradar coatings, ferrite are to develop comparatively sophisticated the earliest absorbing material, mainly contain nickel-zinc ferrite, Mn-Zn ferrite and barium based ferrite etc., and its wave-absorbing mechanism is magnetic domain natural resonance.Ferrite is divided into spinel type, carbuncle type and Magnetoplumbate-type; Wherein best with the absorbing property of hexaplanar sheet Magnetoplumbate-type; Because of hexaplanar sheet magneto-plumbite type ferrite has higher magnetic anisotropy equivalent field; Its natural resonant frequency is higher, shows good high frequency absorbing property.Its advantage be absorb strong, frequency band broad, cost is low; Shortcoming is that density is big, and hot properties is poor.
The conducting polymer antiradar coatings; This kind coating is through making the electro-conductive fiber blending in conventional powder absorption agent; Its advantage is: but the variation of the little molecular designing of density, structure, can realize infrared and microwave is compatible, be prone to Compound Machining, can improve the absorbing property of material greatly.But this kind antiradar coatings has the narrow shortcoming of frequency band, and is particularly very poor at the wave-absorbing effect of low frequency range.
Nano wave-absorption coating is that nanoparticle is used for the coating that the coating acquisition has some specific function.On the one hand nano paint can be improved in the mechanical property of routine such as sticking power, shock resistance, flexibility, might improve ageing-resistant, corrosion-resistant, the radiation resistance of coating on the other hand.In addition, nano paint also possibly demonstrate some specific function, like automatically cleaning, antistatic, stealthy suction ripple, performance such as fire-retardant.
Mainly there is following problem in existing antiradar coatings: 1. specific absorption low, 2. poor compatibility, 3. frequency band electromagnetic parameter alternative narrow, 4. antiradar coatings is not high, can not satisfy the further requirement of development in science and technology to absorbing property.
[summary of the invention]
Technical problem to be solved by this invention provides a kind of antiradar coatings and preparation method thereof.
The present invention realizes that the technical scheme that goal of the invention adopts is; A kind of antiradar coatings; Said antiradar coatings contains CNT, CNT dispersion agent, graphitized carbon black, epoxy resin, epoxy resin diluent and epoxy curing agent, and said CNT accounts for the 5%-20% of said epoxy resin quality.
Preferably, the mass ratio of said epoxy curing agent and epoxy resin is 2/3-1.
Preferably, the mass ratio of said epoxy resin diluent and epoxy resin is 0.4-0.8.
Preferably, the mass ratio of said CNT dispersion agent and epoxy resin is 0.15-0.2.
Preferably, the content of said graphitized carbon black in said epoxy resin and epoxy resin diluent is 0.08-0.09g/ml, and best content is 0.086g/ml.
For satisfying the short requirement of normal temperature, LV and surface cure time, preferred modification aliphatic cyclic amine of said epoxy curing agent of the present invention or hexanediamine.
The present invention also provides a kind of preparation method of antiradar coatings, may further comprise the steps:
A. CNT and carbon black are carried out mixed grinding, obtain carbon black CNT mixtinite;
B. with used for epoxy resin epoxy resin diluent dilution, said carbon black CNT mixtinite is joined in the epoxy resin after the dilution, add the CNT dispersion agent again and stir;
C. use ultrasonic apparatus ultra-sonic dispersion CNT, the adding epoxy curing agent stirs and obtains antiradar coatings.
Better, said step a is specially: CNT and carbon black were ground 2-4 hour at Stainless Steel Ball grinding machine endosphere, obtain carbon black CNT mixtinite.
Better, among the said step c, the time of ultra-sonic dispersion is 4-6 hour.
Better, also comprise behind the ultra-sonic dispersion and adopt the homogeneous appearance step of homogeneous of pressurizeing, and then add epoxy curing agent and stir and obtain antiradar coatings.
Through using according to antiradar coatings of the present invention, can not only satisfy to greatest extent highly absorb, the requirement of compatible good and bandwidth, can also improve the electromagnetic parameter alternative of antiradar coatings, make the range of application of antiradar coatings wider.
[embodiment]
Embodiment 1
A kind of antiradar coatings, its prescription is: (pressing mass ratio)
1 part of epoxy resin, 0.05 part of CNT, 0.15 part of CNT dispersion agent, 0.4 part of epoxy resin diluent, 2/3 part of modification aliphatic cyclic amine;
Wherein, the content that also is included in epoxy resin and the epoxy resin diluent is the graphitized carbon black of 0.08g/ml.
The preparation process of the antiradar coatings of present embodiment is:
A. CNT and graphitized carbon black were ground 2 hours at Stainless Steel Ball grinding machine endosphere by said ratio, obtain carbon black CNT mixtinite;
B. in stirring tank, the used for epoxy resin epoxy resin diluent is diluted; Epoxy resin diluent is selected commercially available epoxy resin special diluting agent; Carbon black CNT mixtinite is joined in the epoxy resin after the dilution; Add the CNT dispersion agent again, low speed stirs for 800 rpms, flows smooth and easy until slurry;
C. use ultrasonic apparatus ultra-sonic dispersion CNT 4 hours, and then add epoxy curing agent modification aliphatic cyclic amine and stir and obtain antiradar coatings.
In the present embodiment; The adding of CNT has the antiradar coatings that makes high to absorb, the advantage of compatible good and bandwidth; Simultaneously, cooperate with the ratio of CNT, can make whole antiradar coatings have different electromagnetic parameters through graphitized carbon black; Like specific inductivity, thereby can bigger selectivity be provided for some application scenario with certain electric magnetic parameter.
Embodiment 2
A kind of antiradar coatings, its prescription is: (pressing mass ratio)
1 part of epoxy resin, 0.2 part of CNT, 0.2 part of CNT dispersion agent, 0.8 part of epoxy resin diluent, 1 part of hexanediamine;
Wherein, the content that also is included in epoxy resin and the epoxy resin diluent is the graphitized carbon black of 0.09g/ml.
The preparation process of the antiradar coatings of present embodiment is:
A. CNT and carbon black were ground 4 hours at Stainless Steel Ball grinding machine endosphere by said ratio, obtain carbon black CNT mixtinite;
B. in stirring tank with used for epoxy resin epoxy resin diluent dilution, epoxy resin diluent is selected commercially available epoxy resin special diluting agent, and carbon black CNT mixtinite is joined in the epoxy resin after the dilution; Add the CNT dispersion agent again, selecting model for use is the CNT dispersant special of TAZ-CNT 2, and low speed stirs for 800 rpms; It is smooth and easy to flow until slurry, and then changes stirring-head, uses the special-purpose stirring-head of sand milling; Add the sand milling pearl of a certain amount of 0.6-0.8mm; The adjustment rotating speed ground 1 hour more than 3000 rpms, removed the sand milling pearl at last;
C. use ultrasonic apparatus ultra-sonic dispersion CNT 6 hours, add the epoxy curing agent hexanediamine, stirring obtains antiradar coatings.
In the present embodiment; The adding of CNT has the antiradar coatings that makes high to absorb, the advantage of compatible good and bandwidth; Simultaneously, cooperate with the ratio of CNT, can make whole antiradar coatings have different electromagnetic parameters through graphitized carbon black; Like specific inductivity, thereby can bigger selectivity be provided for some application scenario with certain electric magnetic parameter.In addition, through the sand milling grinding steps, it is dispersed better that CNT is had in antiradar coatings.
Embodiment 3
A kind of antiradar coatings, its prescription is: (pressing mass ratio)
1 part of epoxy resin, 0.15 part of CNT, 0.2 part of CNT dispersion agent, 0.8 part of epoxy resin diluent, 0.8 part of hexanediamine;
Wherein, the content that also is included in epoxy resin and the epoxy resin diluent is the graphitized carbon black of 0.086g/ml.
The preparation process of the antiradar coatings of present embodiment is:
A. CNT and carbon black were ground 3 hours at Stainless Steel Ball grinding machine endosphere by said ratio, obtain carbon black CNT mixtinite;
B. in stirring tank with used for epoxy resin epoxy resin diluent dilution, epoxy resin diluent is selected commercially available epoxy resin special diluting agent, and carbon black CNT mixtinite is joined in the epoxy resin after the dilution; Add the CNT dispersion agent again, selecting model for use is the CNT dispersant special of TAZ-CNT 2, and low speed stirs for 800 rpms; It is smooth and easy to flow until slurry, and then changes stirring-head, uses the special-purpose stirring-head of sand milling; Add the sand milling pearl of a certain amount of 0.6-0.8mm; The adjustment rotating speed ground 1 hour more than 3000 rpms, removed the sand milling pearl at last;
C. use ultrasonic apparatus ultra-sonic dispersion CNT 5 hours, adopt the homogeneous appearance to pressurize again homogeneous 1-2 hour, add the epoxy curing agent hexanediamine, stirring obtains antiradar coatings.
In the present embodiment, not only through the sand milling grinding steps, it is dispersed better that CNT is had in antiradar coatings, and the homogenizing step that after the ultra-sonic dispersion step, also pressurizes, and makes the dispersiveness of CNT in antiradar coatings better.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can carry out various modifications to the present invention after reading present patent application under the situation that does not break away from the spirit and scope of the present invention.
Claims (10)
1. antiradar coatings; It is characterized in that: said antiradar coatings contains CNT, CNT dispersion agent, graphitized carbon black, epoxy resin, epoxy resin diluent and epoxy curing agent, and said CNT accounts for the 5%-20% of said epoxy resin quality.
2. antiradar coatings according to claim 1 is characterized in that: the mass ratio of said epoxy curing agent and epoxy resin is 2/3-1.
3. antiradar coatings according to claim 1 is characterized in that: the mass ratio of said epoxy resin diluent and epoxy resin is 0.4-0.8.
4. antiradar coatings according to claim 1 is characterized in that: the mass ratio of said CNT dispersion agent and epoxy resin is 0.15-0.2.
5. antiradar coatings according to claim 1 is characterized in that: the content of said graphitized carbon black in said epoxy resin and epoxy resin diluent is 0.08-0.09g/ml (0.086g/ml).
6. antiradar coatings according to claim 1 is characterized in that: said epoxy curing agent is modification aliphatic cyclic amine or hexanediamine.
7. the preparation method of an antiradar coatings is characterized in that, may further comprise the steps:
A. CNT and carbon black are carried out mixed grinding, obtain carbon black CNT mixtinite;
B. with used for epoxy resin epoxy resin diluent dilution, said carbon black CNT mixtinite is joined in the epoxy resin after the dilution, add the CNT dispersion agent again and stir;
C. use ultrasonic apparatus ultra-sonic dispersion CNT, the adding epoxy curing agent stirs and obtains antiradar coatings.
8. the preparation method of antiradar coatings according to claim 7 is characterized in that, said step a is specially: CNT and carbon black were ground 2-4 hour at Stainless Steel Ball grinding machine endosphere, obtain carbon black CNT mixtinite.
9. the preparation method of antiradar coatings according to claim 7 is characterized in that, among the said step c, the time of ultra-sonic dispersion is 4-6 hour.
10. the preparation method of antiradar coatings according to claim 7 is characterized in that, among the said step c, also comprises behind the ultra-sonic dispersion and adopts the homogeneous appearance step of homogeneous of pressurizeing, and then add epoxy curing agent and stir and obtain antiradar coatings.
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| CN2011101798250A CN102807801A (en) | 2011-06-29 | 2011-06-29 | Anti-radar coating and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602132A (en) * | 2013-10-28 | 2014-02-26 | 北京卫星环境工程研究所 | Highlight absorbing material and preparation method thereof |
| CN105131736A (en) * | 2015-08-27 | 2015-12-09 | 安徽明威照明器材有限公司 | Decorative LED heat dissipation coating and preparation method therefor |
| CN105273580A (en) * | 2015-11-25 | 2016-01-27 | 德阳森华涂料化工有限公司 | Electromagnetic radiation-resisting coating and preparation method thereof |
| CN105751590A (en) * | 2016-03-01 | 2016-07-13 | 武汉理工大学 | Honeycomb sandwiched composite material with wave absorbing function and preparation method of honeycomb core composite material |
| CN106433062A (en) * | 2016-09-14 | 2017-02-22 | 郑州峰泰纳米材料有限公司 | Microwave absorbing material and preparation method thereof |
| CN106498757A (en) * | 2016-11-30 | 2017-03-15 | 航天科工武汉磁电有限责任公司 | A kind of electromagnetic shielding fiber cloth and preparation method thereof |
| CN106752692A (en) * | 2016-11-30 | 2017-05-31 | 航天科工武汉磁电有限责任公司 | A kind of electromagnetic protection coating and preparation method thereof |
| CN106752277A (en) * | 2017-03-17 | 2017-05-31 | 南京大学 | A kind of Film-mode resistor antiradar coatings and preparation method thereof |
| CN108822596A (en) * | 2018-06-04 | 2018-11-16 | 深圳市哈德胜精密科技股份有限公司 | A kind of laser absorbent and its preparation method and application |
| WO2018214681A1 (en) * | 2017-05-26 | 2018-11-29 | 洛阳尖端技术研究院 | Epoxy resin wave-absorbing composite material and preparation method therefor |
| CN112888290A (en) * | 2021-01-21 | 2021-06-01 | 上海航天电子通讯设备研究所 | Electromagnetic wave absorbing material capable of being cut into thin sheets, preparation method and waveguide change-over switch |
| CN114085041A (en) * | 2020-08-25 | 2022-02-25 | 深圳光启尖端技术有限责任公司 | Wave-absorbing glass bead and preparation method and application thereof |
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| CN1693392A (en) * | 2004-05-09 | 2005-11-09 | 中国科学院成都有机化学有限公司 | Electrostatic conducting corrosion-proof coating and preparation process thereof |
| CN1791322A (en) * | 2005-10-18 | 2006-06-21 | 南开大学 | Composite material with electromagnetic shielding and radar wave- absorbing function and preparing method |
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2011
- 2011-06-29 CN CN2011101798250A patent/CN102807801A/en active Pending
Patent Citations (2)
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| CN1693392A (en) * | 2004-05-09 | 2005-11-09 | 中国科学院成都有机化学有限公司 | Electrostatic conducting corrosion-proof coating and preparation process thereof |
| CN1791322A (en) * | 2005-10-18 | 2006-06-21 | 南开大学 | Composite material with electromagnetic shielding and radar wave- absorbing function and preparing method |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602132A (en) * | 2013-10-28 | 2014-02-26 | 北京卫星环境工程研究所 | Highlight absorbing material and preparation method thereof |
| CN105131736A (en) * | 2015-08-27 | 2015-12-09 | 安徽明威照明器材有限公司 | Decorative LED heat dissipation coating and preparation method therefor |
| CN105273580A (en) * | 2015-11-25 | 2016-01-27 | 德阳森华涂料化工有限公司 | Electromagnetic radiation-resisting coating and preparation method thereof |
| CN105751590A (en) * | 2016-03-01 | 2016-07-13 | 武汉理工大学 | Honeycomb sandwiched composite material with wave absorbing function and preparation method of honeycomb core composite material |
| CN106433062A (en) * | 2016-09-14 | 2017-02-22 | 郑州峰泰纳米材料有限公司 | Microwave absorbing material and preparation method thereof |
| CN106498757A (en) * | 2016-11-30 | 2017-03-15 | 航天科工武汉磁电有限责任公司 | A kind of electromagnetic shielding fiber cloth and preparation method thereof |
| CN106752692A (en) * | 2016-11-30 | 2017-05-31 | 航天科工武汉磁电有限责任公司 | A kind of electromagnetic protection coating and preparation method thereof |
| CN106752277A (en) * | 2017-03-17 | 2017-05-31 | 南京大学 | A kind of Film-mode resistor antiradar coatings and preparation method thereof |
| US11279822B2 (en) | 2017-05-26 | 2022-03-22 | Luoyang Institute Of Cutting-Edge Technology | Epoxy resin wave-absorbing composite material and preparation method thereof |
| WO2018214681A1 (en) * | 2017-05-26 | 2018-11-29 | 洛阳尖端技术研究院 | Epoxy resin wave-absorbing composite material and preparation method therefor |
| CN108929518A (en) * | 2017-05-26 | 2018-12-04 | 洛阳尖端技术研究院 | A kind of epoxide resin wave-absorbing composite material and preparation method |
| CN108929518B (en) * | 2017-05-26 | 2022-11-25 | 洛阳尖端技术研究院 | Epoxy resin wave-absorbing composite material and preparation method thereof |
| CN108822596A (en) * | 2018-06-04 | 2018-11-16 | 深圳市哈德胜精密科技股份有限公司 | A kind of laser absorbent and its preparation method and application |
| CN108822596B (en) * | 2018-06-04 | 2020-12-15 | 深圳市哈德胜精密科技股份有限公司 | Laser absorber and preparation method and application thereof |
| CN114085041A (en) * | 2020-08-25 | 2022-02-25 | 深圳光启尖端技术有限责任公司 | Wave-absorbing glass bead and preparation method and application thereof |
| CN112888290A (en) * | 2021-01-21 | 2021-06-01 | 上海航天电子通讯设备研究所 | Electromagnetic wave absorbing material capable of being cut into thin sheets, preparation method and waveguide change-over switch |
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Application publication date: 20121205 |