Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

2020 ◽  
Vol 12 (25) ◽  
pp. 28727-28737 ◽  
Author(s):  
Weihua Gu ◽  
Junwen Tan ◽  
Jiabin Chen ◽  
Zhu Zhang ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Thermal Insulation ◽  
Hybrid Foam

scholarly journals Environmentally Friendly and Multifunctional Shaddock Peel-Based Carbon Aerogel for Thermal-Insulation and Microwave Absorption

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Weihua Gu ◽  
Jiaqi Sheng ◽  
Qianqian Huang ◽  
Gehuan Wang ◽  
Jiabin Chen ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Thermal Insulation ◽  
Freeze Drying ◽  
Thermal Infrared ◽  
Carbon Aerogel ◽  
Carbon Aerogels ◽  
List Type ◽  
Drying Method ◽  
Cross Sectional ◽  
Compression Resistance

Highlights The eco-friendly shaddock peel-derived carbon aerogels were prepared by a freeze-drying method. Multiple functions such as thermal insulation, compression resistance and microwave absorption can be integrated into one material-carbon aerogel. Novel computer simulation technology strategy was selected to simulate significant radar cross-sectional reduction values under real far field condition. . Abstract Eco-friendly electromagnetic wave absorbing materials with excellent thermal infrared stealth property, heat-insulating ability and compression resistance are highly attractive in practical applications. Meeting the aforesaid requirements simultaneously is a formidable challenge. Herein, ultra-light carbon aerogels were fabricated via fresh shaddock peel by facile freeze-drying method and calcination process, forming porous network architecture. With the heating platform temperature of 70 °C, the upper surface temperatures of the as-prepared carbon aerogel present a slow upward trend. The color of the sample surface in thermal infrared images is similar to that of the surroundings. With the maximum compressive stress of 2.435 kPa, the carbon aerogels can provide favorable endurance. The shaddock peel-based carbon aerogels possess the minimum reflection loss value (RLmin) of − 29.50 dB in X band. Meanwhile, the effective absorption bandwidth covers 5.80 GHz at a relatively thin thickness of only 1.7 mm. With the detection theta of 0°, the maximum radar cross-sectional (RCS) reduction values of 16.28 dB m2 can be achieved. Theoretical simulations of RCS have aroused extensive interest owing to their ingenious design and time-saving feature. This work paves the way for preparing multi-functional microwave absorbers derived from biomass raw materials under the guidance of RCS simulations.

Lightweight, and Robust Cobalt Ferrite/Carbon Nanotubes/Waterborne Polyurethane Hybrid Aerogels for Efficient Microwave Absorption and Thermal Insulation

2021 ◽  
Author(s):  
jiawei Luo ◽  
Yu Wang ◽  
zhongji Qu ◽  
Wei Wang ◽  
Dan Yu
Keyword(s):  
Mechanical Property ◽  
Carbon Nanotubes ◽  
Microwave Absorption ◽  
Thermal Insulation ◽  
Cobalt Ferrite ◽  
Waterborne Polyurethane ◽  
Hybrid Aerogels ◽  
Effective Integration

Lightweight and efficient microwave absorption materials with excellent heat-insulating ability and mechanical property are highly attractive in real applications, but the effective integration of these functions into one material by...

A lightweight CNWs-SiO2/3Al2O3·2SiO2 porous ceramic with excellent microwave absorption and thermal insulation properties

2020 ◽  
Vol 46 (12) ◽  
pp. 20395-20403 ◽  
Author(s):  
Yongpeng Dong ◽  
Xiaomeng Fan ◽  
Hanjun Wei ◽  
Zexin Hou ◽  
Minghang Li ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Thermal Insulation ◽  
Porous Ceramic

Calculation of tension in the three-layer pipe with viscoelastic thermal insulation

2019 ◽  
Vol 5 (3) ◽  
pp. 69-78
Author(s):  
V. V. Mozharovsky ◽  
◽  
D. S. Kuzmenkov ◽  
E. A. Golubeva ◽  
◽  
...  
Keyword(s):  
Thermal Insulation
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