CN115651443A - Low-infrared-emissivity functional filler compatible with visible light camouflage - Google Patents
Low-infrared-emissivity functional filler compatible with visible light camouflage Download PDFInfo
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- CN115651443A CN115651443A CN202211343482.1A CN202211343482A CN115651443A CN 115651443 A CN115651443 A CN 115651443A CN 202211343482 A CN202211343482 A CN 202211343482A CN 115651443 A CN115651443 A CN 115651443A
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Abstract
The invention discloses a functional filler with low infrared emissivity compatible with visible light camouflage. The visible light compatible camouflage low infrared emissivity filler consists of 40-60 parts of spherical aluminum powder, 5-30 parts of infrared transparent pigment and 30-35 parts of stearic acid. The infrared transparent pigment is one or more of zinc oxide, zinc sulfide, zinc selenide, lithopone, cadmium sulfide, calcium fluoride, barium fluoride, basic lead carbonate, bismuth oxychloride and ferric oxide, and the particle size of the spherical aluminum powder is 3-20 um. The functional filler prepared by the invention has better floating performance in the coating film forming process, the infrared emissivity epsilon of the wave band of 8-14 um is less than 0.4, and meanwhile, the functional filler has lower lightness and no obvious metallic luster, can be used for preparing various light-colored coatings, and realizes the invisible compatibility of infrared and visible light under certain background conditions.
Description
Technical Field
The invention relates to the field of fillers, in particular to a functional filler compatible with visible light camouflage and low infrared emissivity.
Background
In the modern high-technology war, along with the rapid development of detection technology, weaponry can be detected by multiple wave bands in all directions such as visible light, infrared, radar, laser and the like, which causes greater threat to the battlefield viability of the weaponry, and in order to enhance the battlefield viability of the weaponry and reduce the probability of finding military targets, the multi-wave band compatible camouflage material is paid more and more extensive attention and research. The visible light and infrared compatible camouflage material is one of multiband compatible camouflage materials, and the probability that military targets are detected by visible light and infrared detectors can be effectively reduced.
At present, relevant multiband compatible stealth materials at home and abroad mainly comprise photonic crystals, semiconductor materials and intelligent stealth materials. The photonic crystal is a metamaterial formed by periodically arranging two or more dielectric materials with different dielectric constants in a space, the periodic structure can generate a photon forbidden band and a photon conduction band in the crystal, so that incident electromagnetic waves with corresponding frequencies can be totally reflected in the photon forbidden band and can penetrate through the photon conduction band, the method can mainly realize the compatible stealth of infrared and radar, the infrared band electromagnetic waves are totally reflected in the photon forbidden band, and the radar band electromagnetic waves are absorbed in the photon conduction band, but the method is still in a laboratory stage at present; the low infrared emissivity film material can be prepared by vacuum coating modes such as magnetron sputtering and the like through the semiconductor stealth material, the coating infrared emissivity can be as low as 0.25, and meanwhile, material performance can be regulated and controlled by adjusting carrier parameters of the semiconductor material, so that the compatible stealth performance is improved, and the development requirement of broadband waveband stealth is expected to be met. However, the construction mode is high in cost and not suitable for industrial application, the semiconductor material is added into a coating system as a filler, the coating is simple to prepare and construct and is not influenced by the shape of a base material, but the emissivity reducing capability of the coating is limited, and the emissivity of the coating at a wave band of 8-14 mu m is reported to be 0.6-0.7 in documents. The intelligent stealth material can actively adjust the infrared radiation characteristic of the material according to the change of the external environment, enhance the fusion degree of the material and the external environment, realize dynamic and intelligent stealth, and meet the inevitable requirements of the development of complex and variable battlefield environments. Such as phase change materials, electrochromic materials, etc., which are also currently in the laboratory stage.
Disadvantages of the background Art
At present, the low infrared emissivity coating which can be industrially applied mainly consists of a binder, a coloring pigment, a low infrared emissivity functional filler and an auxiliary agent. The functional filler with low infrared emissivity is mainly metal powder such as aluminum powder, copper powder, iron powder and silver powder, wherein the aluminum powder has low price, wide source and most common application. However, the aluminum powder has high reflection in the infrared band, high reflection in the visible band and the radar band, low emissivity in the infrared band, low detectability in the infrared band, and is not beneficial to compatibility and stealth in the visible band and the radar band.
By processing the surface of the aluminum powder, the novel aluminum powder with low infrared emissivity and low lightness can be prepared, and the infrared camouflage performance of the coating is improved while the infrared stealth requirement is met. The surface treatment of the aluminum powder mainly comprises organic matter coating and inorganic matter coating. The organic coating method is a method of forming an organic coating layer on the surface of the pigment particle by using a coupling agent, a surfactant, a polymer or the like to perform adsorption or chemical reaction with the surface of the aluminum powder. The emissivity of the surface layer of the aluminum powder prepared by the method is usually higher (more than 0.5) due to the high absorption of the resin in a thermal infrared band; the inorganic matter coating mainly comprises a mechanical compounding method, a liquid phase deposition method, a vapor phase deposition method, a sol-gel method and the like, and the inorganic matter coating is mainly reported that metal oxides such as titanium dioxide, ferric oxide, chromium oxide and the like are coated on the surface of aluminum powder, the brightness of the coated aluminum powder is obviously reduced, and the chemical stability is improved, but the emissivity of the coated aluminum powder is also higher in a thermal infrared band, for example, the emissivity of the titanium dioxide is 0.825, and the emissivity of the ferric oxide is 0.662, so that the emissivity range of the prepared modified aluminum powder is 0.425-0.600.
Disclosure of Invention
The invention aims to provide a filler with the function of being compatible with visible light camouflage and low infrared emissivity, the emissivity epsilon of a wave band of 8-14 um of the filler is less than 0.4, the filler is compatible with visible light wave band stealth, and the filler has low detectability in the visible light wave band.
The filler with the functions of being compatible with visible light camouflage and low infrared emissivity comprises the following components in parts by weight:
40-60 parts of spherical aluminum powder
5 to 30 portions of infrared transparent pigment
30 to 35 portions of stearic acid
The infrared transparent pigment is one or more of zinc oxide, zinc sulfide, zinc selenide, lithopone, cadmium sulfide, calcium fluoride, barium fluoride, basic lead carbonate, bismuth oxychloride and ferric oxide.
Further, the particle size of the spherical aluminum powder is 3-20 um.
Further, the stearic acid is of industrial grade, and the infrared transparent pigment is of industrial grade.
On the other hand, the preparation method of the functional filler compatible with the visible light camouflage low infrared emissivity is characterized by preparing materials according to a formula, adding the materials into a ball mill, and controlling the ball milling time and the viscosity of paint liquid to obtain the functional filler compatible with the visible light camouflage low infrared emissivity.
The invention has the beneficial effects that:
the functional filler prepared by the invention has better floating performance in the coating film forming process, the infrared emissivity epsilon of the wave band of 8-14 um is less than 0.4, and meanwhile, the functional filler has lower lightness and no obvious metallic luster, can be used for preparing various light-colored coatings, and realizes the invisible compatibility of infrared and visible light under certain background conditions.
Detailed Description
This example demonstrates the preparation of a functional filler compatible with visible light camouflage and low infrared emissivity.
The first embodiment is as follows:
| name of raw materials | Added amount (g) |
| Spherical aluminum powder (D) 50 8um) | 55 |
| Zinc sulfide | 10 |
| Stearic acid | 35 |
The functional filler is added with infrared relatively transparent resin G1657 (Kraton), so that the mass content of the functional filler in a dry film of the coating is 80%, and the infrared emissivity epsilon =0.389 of the coating in a wave band of 8-14 um.
Example two:
| name of raw materials | Added amount (g) |
| Spherical aluminum powder (D) 50 20um) | 60 |
| Zinc selenide | 8 |
| Diluent | 32 |
The functional filler is added with infrared relatively transparent resin G1657 (Kraton), so that the mass content of the functional filler in a dry film of the coating is 80%, and the infrared emissivity epsilon =0.365 of a wave band of 8-14 um of the coating.
Example three:
| name of raw materials | Added amount (g) |
| Spherical aluminum powder (D) 50 3um) | 50 |
| Bismuth oxychloride | 20 |
| Stearic acid | 30 |
The functional filler is added with infrared relatively transparent resin G1657 (Kraton), so that the mass content of the functional filler in a dry film of the coating is 80%, and the infrared emissivity epsilon of the coating in a wave band of 8-14 um is =0.396.
The present disclosure has been described in terms of the above-described embodiments, which are merely exemplary of the implementations of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications are possible within the spirit and scope of the disclosure, and these are all within the scope of the disclosure.
Claims (4)
1. The utility model provides a compatible visible light camouflage nature low infrared emissivity function filler which characterized in that: based on the weight portion, the weight portion of the material,
consists of the following components:
40-60 parts of spherical aluminum powder
5 to 30 portions of infrared transparent pigment
30 to 35 portions of stearic acid
The infrared transparent pigment is one or more of zinc oxide, zinc sulfide, zinc selenide, lithopone, cadmium sulfide, calcium fluoride, barium fluoride, basic lead carbonate, bismuth oxychloride and ferric oxide.
2. The filler compatible with visible light camouflage and low infrared emissivity as claimed in claim 1, wherein the spherical aluminum powder has a particle size of 3-20 um.
3. The visible light camouflage low infrared emissivity functional filler according to claim 1, wherein the stearic acid is technical grade and the infrared transparent pigment is technical grade.
4. The preparation method of the visible light camouflage low infrared emissivity functional filler compatible according to any one of claims 1 to 3, wherein the visible light camouflage low infrared emissivity functional filler is obtained by preparing materials according to a formula, adding the materials into a ball mill, and controlling the ball milling time and the viscosity of paint liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211343482.1A CN115651443A (en) | 2022-10-31 | 2022-10-31 | Low-infrared-emissivity functional filler compatible with visible light camouflage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211343482.1A CN115651443A (en) | 2022-10-31 | 2022-10-31 | Low-infrared-emissivity functional filler compatible with visible light camouflage |
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Citations (10)
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| CN1884395A (en) * | 2005-06-24 | 2006-12-27 | 上海华明高技术（集团）有限公司 | Low infrared emittance sheet-like pigment and method for preparing same |
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| CN103290684A (en) * | 2013-06-21 | 2013-09-11 | 中国人民解放军总后勤部军需装备研究所 | Low-infrared-emissivity green stealth paint and preparation method thereof |
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| CN111215634A (en) * | 2020-02-20 | 2020-06-02 | 华南理工大学 | Method for preparing flaky aluminum powder by ammonia plasma ball milling and application |
| CN112549665A (en) * | 2020-12-04 | 2021-03-26 | 中国人民解放军96901部队25分队 | Radar-infrared-visible light multi-spectrum camouflage stealth structure and preparation method thereof |
| CN112625521A (en) * | 2020-12-02 | 2021-04-09 | 中昊北方涂料工业研究设计院有限公司 | Low-infrared-emissivity coating with visible light compatibility and preparation method thereof |
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2022
- 2022-10-31 CN CN202211343482.1A patent/CN115651443A/en active Pending
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| US4289677A (en) * | 1971-08-23 | 1981-09-15 | Supcoe Robert F | Formulation for producing low infrared coating in the 2-15 micron range |
| US4311623A (en) * | 1981-03-20 | 1982-01-19 | The United States Of America As Represented By The Secretary Of The Navy | Blue-gray low infrared emitting coating |
| CN1884395A (en) * | 2005-06-24 | 2006-12-27 | 上海华明高技术（集团）有限公司 | Low infrared emittance sheet-like pigment and method for preparing same |
| CN101995187A (en) * | 2010-11-12 | 2011-03-30 | 五邑大学 | Novel infrared and radar integrated stealth fabric and preparation method thereof |
| CN103290684A (en) * | 2013-06-21 | 2013-09-11 | 中国人民解放军总后勤部军需装备研究所 | Low-infrared-emissivity green stealth paint and preparation method thereof |
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| CN114836095A (en) * | 2022-05-17 | 2022-08-02 | 西北工业大学太仓长三角研究院 | Stealth composite material and preparation method thereof |
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