Flexible and foldable composite films based on polyimide/phosphorene hybrid aerogel and phase change material for infrared stealth and thermal camouflage

Infrared stealth technology plays a vital role in development of defense industry and new military equipment. The current study focused on a novel type of flexible and foldable composite films based on polyimide (PI)/phosphorene (PR) hybrid aerogel and phase change material (PCM) for infrared stealt...

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Bibliographic Details
Published in:Composites science and technology Vol. 217; p. 109127
Main Authors: Shi, Tao, Zheng, Zhiheng, Liu, Huan, Wu, Dezhen, Wang, Xiaodong
Format: Journal Article
Language:English
Published: Barking Elsevier Ltd 05.01.2022
Elsevier BV
Subjects:
Aerogels
Camouflage
Composite materials
Defense industry
Heat conductivity
Heat transfer
High temperature
Industrial development
Infrared absorption
Infrared stealth and thermal camouflage
Mechanical properties
Military aircraft
Military equipment
Near infrared radiation
Phase change material
Phase change materials
Phosphorene
Phosphorene nanoflakes
Photothermal conversion
Polyethylene glycol
Polyimide hybrid aerogel
Stealth technology
Thermal regulation and insulation
Thin films
Thermal regulation and insulation
Polyimide hybrid aerogel
Phosphorene nanoflakes
Phase change material
Infrared stealth and thermal camouflage
ISSN:0266-3538, 1879-1050
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Summary:Infrared stealth technology plays a vital role in development of defense industry and new military equipment. The current study focused on a novel type of flexible and foldable composite films based on polyimide (PI)/phosphorene (PR) hybrid aerogel and phase change material (PCM) for infrared stealth and thermal camouflage applications. The composite films were successfully obtained by fabricating a PI/PR hybrid aerogel through prepolymerizaton, film casting, freeze-drying, and thermal imidization, followed by vacuum impregnation of polyethylene glycol (PEG) as a PCM into the aerogel framework. The combination of PI and PR nanoflakes endows the hybrid aerogel with an effective enhancement in mechanical properties, near infrared absorption, and infrared photothermal conversion. The resultant composite films not only present prominent tensile and fatigue-resistant performance but also exhibit a good thermal regulation capability with a high latent-heat capacity of over 150 J/g. More importantly, the composite films demonstrate good infrared stealth and thermal camouflage performance on the high-temperature targets through effective thermal buffer and insulation. With ultralight, flexible, foldable, shape-tunable, and thermal self-regulatory characteristics, the PI/PR aerogel/PEG composite films developed by this work exhibit great application potential in infrared stealth and thermal camouflage for new military equipment. [Display omitted] •A flexible and foldable composite film was designed for infrared stealth and thermal camouflage.•The film was based on the polyimide/phosphorene hybrid aerogel and phase change material.•The introduction of phosphorene enhances infrared absorption and photothermal conservation.•The film exhibit a good thermal regulation ability to buffer thermal swings.•The film shows great potential for stealth and camouflage applications in new military equipment.
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ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2021.109127