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Stealthy coating compatible with laser and infrared and preparation method thereof

A coating, infrared technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of urgent application needs, incompatibility with laser stealth, unsatisfactory effect, etc., and achieve the effect of good stealth performance

Inactive Publication Date: 2017-06-20
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since modern detection technology is a combination of multiple detection equipment, such as infrared imaging equipment and laser ranging equipment used together, a single stealth can no longer meet the needs of modern stealth technology, stealth materials have begun to develop in the direction of multiple composite stealth, infrared- Laser-compatible stealth has become an important topic for research and application
[0004] However, due to the conflict between laser and infrared stealth principles, it is difficult to realize. Some methods currently adopted, such as modifying low-emissivity aluminum powder materials, have unsatisfactory effects, but the application requirements are very urgent.
Chinese patent No. ZL201510362845.X and Chinese patent No. ZL201510362417.7 proposed a low infrared emissivity film in the 3-5um and 8-14um bands respectively. Although it has good infrared stealth performance, it is not compatible with laser stealth. Therefore, currently applicable stealth materials compatible with laser and infrared are still one of the multi-band compatible stealth problems that need to be solved urgently.

Method used

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  • Stealthy coating compatible with laser and infrared and preparation method thereof
  • Stealthy coating compatible with laser and infrared and preparation method thereof
  • Stealthy coating compatible with laser and infrared and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] A stealth coating compatible with laser and infrared. The stealth coating compatible with laser and infrared is mainly composed of filler and resin matrix. The filler is a composite filler composed of samarium oxide, lanthanum oxide, flake aluminum powder, and indium tin oxide. ; The resin matrix is ​​polyurethane resin. The composition and the parts by weight of the described stealth coating compatible with laser and infrared are as follows:

[0026]

[0027]

[0028] The flaky aluminum powder described herein is a floating aluminum powder with a particle size of 8-20 um and an average particle size of about 13 um.

[0029] Wherein said organic solvent is a kind of in propylene glycol methyl ether acetate or butyl acetate or acetone.

[0030] The resin described herein is polyurethane resin, which has good adhesiveness, manufacturability and mechanical strength.

[0031] The indium tin oxide mentioned therein is a kind of semiconductor material, which has a low...

Embodiment 2

[0041] Basically the same as Example 1, the difference is that the composition and parts by weight of the stealth coating compatible with laser and infrared are as follows:

[0042]

[0043] The average emissivity of the coating thus prepared is 0.5 in the infrared band 3-5um; the average emissivity in the infrared band 8-14um is 0.6; the reflectance in the 1.06um laser band is 0.15; the reflectance in the 10.6um laser band is 0.15 ;

Embodiment 3

[0045] Basically the same as Example 1, the difference is that the composition and parts by weight of the stealth coating compatible with laser and infrared are as follows:

[0046]

[0047] The coating thus prepared has an emissivity of 0.4 ( figure 1 ); In the infrared band 8 ~ 14um emissivity is 0.6 ( figure 1 ); the reflectance in the 1.06um laser band is 0.12 ( figure 2 ); the reflectance in the 10.6um laser band is 0.13 ( image 3 );

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Abstract

Belonging to the technical field of functional materials, the invention relates to a stealthy coating compatible with laser and infrared and a preparation method thereof. The stealthy coating compatible with laser and infrared is composed of filler and a resin matrix, wherein the filler is a composite filler composed of samarium oxide, lanthanum oxide, flake aluminum powder and indium tin oxide, and the resin matrix is polyurethane resin. The invention adopts the composite filler composed of samarium oxide, lanthanum oxide, flake aluminum powder and indium tin oxide to cooperate with the resin matrix and an assistant, the combined action endows the coating with low emissivity at the infrared band and low reflectivity at the laser waveband. By using polyurethane resin as the resin matrix and cooperating with specific spray coating process, the coating provided by the invention has good stealth performance, and also has good mechanical properties and environmental resistance at the same time. Also the preparation method is simple and is easy for operation.

Description

technical field [0001] The invention belongs to the technical field of functional materials, in particular to a stealth coating compatible with laser and infrared and a preparation method thereof. Background technique [0002] The detection bands of infrared detectors are mainly concentrated in 3-5um medium-wave infrared and 8-14um long-wave infrared. In order to achieve stealth, target radiation must be reduced. At present, it is widely used to apply a layer of low-emissivity paint on the surface of the target to reduce the radiation of the target and make it difficult to be identified, thus having the ability of stealth. To meet the requirements of laser stealth, the target must have low reflectivity, so that the reflected laser light is difficult to be captured by the receiving device, so as to achieve laser stealth. [0003] Since modern detection technology is a combination of multiple detection equipment, such as infrared imaging equipment and laser ranging equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
CPCC09D7/61C09D7/70C09D175/04C08K3/08C08K3/22C08K7/00C08K13/04C08K2003/0812C08K2003/221
Inventor 朱志明顾兆栴孙惠敏蒋洪晖夏晨硕郭雪松
Owner NANJING UNIV
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