Sodium alginate aerogel derived SiC@Co-C 3D network enhances electromagnetic wave absorption and thermal conductivity of PDMS based composite
Xiang L. Pan D. Lei J. AlMasoud N. Alomar T.S. Issaulu I.G. Wang Y. El-Bahy Z.M. Liu C. Guo Z. Ainur S. Toktarbay Z.
May 2025Elsevier B.V.
International Journal of Biological Macromolecules
2025#306
Interface packaging materials with both electromagnetic wave absorption and high thermal conductivity remains a research hotspot in modern electronics industry and aerospace field. In this paper, the cobalt alginate aerogel derived from biomass sodium alginate was carbothermal reduced to obtain a three-dimensional skeleton structure composed of zero-dimensional Co metal particles, one-dimensional silicon carbide (SiC) whiskers and biomass derived carbon (C). The dielectric-electromagnetic effect of the filler network makes the obtained polydimethylsiloxane (PDMS) based composite (PDMS/SiC@Co-C) exhibits good electromagnetic wave absorption performance, with the lowest reflection loss (RLmin) value can reach −40.08 dB, and the effective absorption bandwidth (EABmax) can reach 4.16 GHz at the thickness of 1.9 mm. The unique three-dimensional overlapping structure makes the thermal conductivity of PDMS/SiC@Co-C increase to 1.856 W/m·K, which is 1345 % higher than that of PDMS. This work provides an important reference value for the development of interface packaging materials used in microelectronics and aerospace fields.
Alginate aerogel , Electromagnetic wave absorption , High thermal conductivity
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Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, China
Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
Department of Biology, Faculty of Natural Science, Khoja Akhmet Yassawi International Kazakh-Turkish University, Sattarkhanov 29, Turkistan, 161200, Kazakhstan
Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Nasr City, 11884, Egypt
Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne, NE1 8, United Kingdom
Department of Сhemistry, Faculty of Natural Sciences and Geography, Abai Kazakh National Pedagogical University, 13 Dostyk Ave., Almaty, 050010, Kazakhstan
Key Laboratory of Materials Processing and Mold (Zhengzhou University)
Department of Chemistry
Department of Biology
Department of Chemistry
Mechanical and Construction Engineering
Department of Сhemistry
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