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- W3200369470 abstract "Sustainable manufacture of renewable materials without compromising performance remains a challenge to material scientists. Biomass material is acknowledged as a cost-effective approach to alleviate the situation. In this work, carbonized silk fiber (average 5 μm diameter) mats were derived from silkworms through degumming and subsequent one-step carbonization process at high temperature. It is demonstrated that the resultant mats are able to show great flexibility and high-efficiency microwave attenuation performance by optimizing the annealing process. At the optical carbonization temperature of 650 °C, the carbonized silk fiber mat/silicone composite could exhibit a minimal reflection loss (RL) value of −70 dB at 17.6 GHz and 2.5 mm thickness. At 3.2 mm thickness, an effective absorption bandwidth (EAB, RL < −10 dB) as wide as 8.7 GHz (9.3–18 GHz) is achieved. Such a broad bandwidth is mainly attributed to the long fiber length and well-connected conductive network in the mat, which leads to promoted permittivity at a low filling ratio (5 wt %). Combining the great flexibility, broad bandwidth, lightweight, and low cost with a simple fabrication process, the established carbonized silk fiber mat could be an environmentally friendly alternative to currently existing traditional absorber materials for microwave attenuation in electromagnetic compatibility applications." @default.
- W3200369470 created "2021-09-27" @default.
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- W3200369470 date "2021-09-14" @default.
- W3200369470 modified "2023-09-27" @default.
- W3200369470 title "Carbonized Silk Fiber Mat: a Flexible and Broadband Microwave Absorber, and the Length Effect" @default.
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- W3200369470 doi "https://doi.org/10.1021/acssuschemeng.1c02857" @default.
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