Infrared emissivity properties of infrared stealth coatings prepared by water-based technologies

Liu, Zhi-Pan; Ban, Guo Dong; Ye, Sheng Tian; Liu, Wen Yan; Liu, Na; Tao, Rui

doi:10.1364/ome.6.003716

Cited by 37 publications

(11 citation statements)

References 5 publications

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“…In 8–14 µm, epoxy resin (ER) and polyurethane resin (PR) exhibit two or three strong absorption peaks (Figure S14a,b, Supporting Information), while acrylic resin (AR) shows only one absorption peak (1158.3 cm −1 ) arising from CO stretching vibrations in ester groups (Figure S14c, Supporting Information). [ 39 ] Besides, AR exhibits an infrared emissivity lower than the other two in 8–14 µm (Figure S15, Supporting Information). Therefore, we selected AR as the adhesive of low infrared emissivity coatings.…”

Section: Resultsmentioning

confidence: 99%

Combined Experimental and DFT Study on 2D MoSe₂ toward Low Infrared Emissivity

Tong

Zhou

et al. 2022

Adv Funct Materials

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Low infrared emissivity materials play a key role in thermal camouflage or retardation. Among these, fillers can be easily shaped into various flexible forms and normally provide an omnidirectional and polarization-insensitive emissivity. However, conventional fillers suffer from drawbacks of full-waveband ultrahigh reflectivity, unsatisfactory thermal camouflage performances, or poor chemical/thermal stabilities. Herein, 2D MoSe 2 is discovered as a new semiconductor with intrinsic low infrared emissivity after first-principle density functional theory calculation and experimental demonstration on eight types of two-dimensional materials (2DMs). Mechanisms of electron-photon reflection and phonon-photon absorption for the low infrared emissivity are proposed. A two-step microwave-assisted amination process is developed to exfoliate the nanosheets and obtain a desired low infrared emissivity. The as-obtained chitosan modified MoSe 2 (CS@MoSe 2 ) has an ultrahigh spectral reflectivity of 78%-86% in 8-14 µm, and its resin-based coating still exhibits a low infrared emissivity of 0.32 and shows a dramatic reduction in radiation temperature of 28 °C for a hot object at 70 °C. Besides, CS@MoSe 2 can endure a high temperature of 220 °C and is demonstrated with a long-term thermal camouflage efficiency in hot environments. This work will guide 2DMs selection and preparation toward desired infrared radiation properties to satisfy numerous applications.

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Section: Resultsmentioning

confidence: 99%

Combined Experimental and DFT Study on 2D MoSe₂ toward Low Infrared Emissivity

Tong

Zhou

et al. 2022

Adv Funct Materials

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“…In order to reduce the emissivity, the surface can be coated with a film forming material with solid particles that present a high IR reflectivity, a property which is directly influenced by the geometry, the powder materials particles dimensions and their concentration [2][3][4]. The binder must protect the particles against external aggressive factors during the entire period the object is coated and also must have a low absorbance, thus allowing the incident radiation to intersect with the solid particles [5].…”

Section: Introductionmentioning

confidence: 99%

Organic Coatings with Low IR Emission

Epure¹,

Țigănescu²,

Zecheru³

et al. 2021

Mater. Plast.

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A series of methods were employed to assess the performances of advanced coating materials based on components that can modify the spectral parameters of the surfaces on which these materials are applied in order to obtain passive military camouflage. Powder materials with high infrared (IR) reflectance were used to obtain this type of coatings, which also ingrain in their structure a significant volume of air that allow limitation of the radiative heat transfer of the coated source. The components were embedded in a polyurethane matrix, which facilitated the coating process on different surfaces. The bicomponent polyurethane-based binder used within the different composition tested is transparent to incident IR radiation, has no organic solvents, is highly flexible and possesses remarkable physical, chemical and mechanical properties: high surface adhesion, high flexibility and resistance against a number of chemical agents and external factors with destructive effect. The efficiency of these composite materials was further demonstrated by analyzing the thermal images of different objects.

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“…The wavelength of the IR signature depends on the type of IR detector that is utilized, and can be between 2 μm and 14 μm. Since the IR signature of an object depends on various parameters related to its size and surface properties, such as its temperature, emissivity, and reflection geometry, there are various methods of reducing IR signatures to achieve IR stealth technology 32 . Decreasing the surface temperature to suppress the thermal radiation from the target surface is the most popular approach.…”

Section: Introductionmentioning

confidence: 99%

Selective dual-band metamaterial perfect absorber for infrared stealth technology

Kim

Han

Hahn

2017

Sci Rep

214

104

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We propose a dual-band metamaterial perfect absorber with a metal–insulator–metal structure (MIM) for use in infrared (IR) stealth technology. We designed the MIM structure to have surface plasmon polariton (SPP) and magnetic polariton (MP) resonance peaks at 1.54 μm and 6.2 μm, respectively. One peak suppresses the scattering signals used by laser-guided missiles, and the other matches the atmospheric absorption band, thereby enabling the suppression of long-wavelength IR (LWIR) and mid-wavelength IR (MWIR) signals from objects as they propagate through the air. We analysed the spectral properties of the resonance peaks by comparing the wavelength of the MP peak calculated using the finite-difference time-domain method with that obtained by utilizing an inductor–capacitor circuit model. We evaluated the dependence of the performance of the dual-band metamaterial perfect absorber on the incident angle of light at the surface. The proposed absorber was able to reduce the scattering of 1.54 μm IR laser light by more than 90% and suppress the MWIR and LWIR signatures by more than 92%, as well as maintain MWIR and LWIR signal reduction rates greater than 90% across a wide temperature range from room temperature to 500 °C.

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Infrared emissivity properties of infrared stealth coatings prepared by water-based technologies

Cited by 37 publications

References 5 publications

Combined Experimental and DFT Study on 2D MoSe₂ toward Low Infrared Emissivity

Combined Experimental and DFT Study on 2D MoSe₂ toward Low Infrared Emissivity

Organic Coatings with Low IR Emission

Selective dual-band metamaterial perfect absorber for infrared stealth technology

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Infrared emissivity properties of infrared stealth coatings prepared by water-based technologies

Cited by 37 publications

References 5 publications

Combined Experimental and DFT Study on 2D MoSe2 toward Low Infrared Emissivity

Combined Experimental and DFT Study on 2D MoSe2 toward Low Infrared Emissivity

Organic Coatings with Low IR Emission

Selective dual-band metamaterial perfect absorber for infrared stealth technology

Contact Info

Product

Resources

About

Combined Experimental and DFT Study on 2D MoSe₂ toward Low Infrared Emissivity

Combined Experimental and DFT Study on 2D MoSe₂ toward Low Infrared Emissivity