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Molten Salt-assisted Combustion Synthesis of Carbon Foam and its Electromagnetic Shielding Performance
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Wentao XU1, Donghai DING1, Xinmin YU2, Guoqing XIAO1, Yun REN1, Yunqin GAO1, Xing HOU1
Journal of the Chinese Ceramic Society | 2020, 48(5) : 768 - 776
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Journal of the Chinese Ceramic Society | 2020, 48(5): 768-776
Molten Salt-assisted Combustion Synthesis of Carbon Foam and its Electromagnetic Shielding Performance
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Wentao XU1, Donghai DING1, Xinmin YU2, Guoqing XIAO1, Yun REN1, Yunqin GAO1, Xing HOU1
Affiliations
  • 1.College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055 , China
  • 2.Research Institute of Aerospace Special Materials and Processing Technology, Beijing 100074 , China

    • XU Wentao (1995-), male, Master candidate. E-mail:

About Author:

XU Wentao (1995-), male, Master candidate. E-mail:

Published: 2020-05-20 doi: 10.14062/j.issn.0454-5648.2020.05.20190693
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Carbon foams were prepared via molten salt-assisted combustion synthesis with polyvinyl chloride (PVC) as a carbon source, magnesium powder (Mg) as a reducing agent, ferrocene (Fc) as a catalyst and different kinds of molten salts (i.e., NaCl, KCl, and MgCl2) as a porogen. The products were characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy and specific surface area measurement. The electromagnetic shielding specimens were prepared with carbon foam as an absorbent and paraffin as a binder. The electromagnetic shielding effectiveness of the samples in the frequency range of 8.2-12.4 GHz was tested by a rectangular waveguide method. The results show that the optimum foaming effect is achieved when NaCl is used as a porogen, and the well-developed hollow spherical carbon foams with the pore sizes of 100-500 nm are obtained after washing and leaching. Molten salts have a positive effect on the graphitization degree and micro-morphology of carbon foams, in which NaCl shows an optimum accelerating-effect. The combustion synthesized products have a good electromagnetic shielding performance. The carbon foams with NaCl as a molten salt have an optimum electromagnetic shielding efficiency (i.e., up to 39.5 dB).

combustion synthesis  /  molten salt  /  carbon foam  /  electromagnetic shielding
徐文韬, 丁冬海, 于新民, 肖国庆, 任耘, 高云琴, 侯星. 熔盐辅助燃烧合成碳泡沫及其电磁屏蔽性能. 硅酸盐学报, 2020 , 48 (5) : 768 -776 . DOI: 10.14062/j.issn.0454-5648.2020.05.20190693
Wentao XU, Donghai DING, Xinmin YU, Guoqing XIAO, Yun REN, Yunqin GAO, Xing HOU. Molten Salt-assisted Combustion Synthesis of Carbon Foam and its Electromagnetic Shielding Performance[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (5) : 768 -776 . DOI: 10.14062/j.issn.0454-5648.2020.05.20190693
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Year 2020 volume 48 Issue 5
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Article Info
doi: 10.14062/j.issn.0454-5648.2020.05.20190693
  • Receive Date：2019-10-21
  • Online Date：2026-10-29
  • Published：2020-05-20
Article Data
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History
  • Received：2019-10-21
  • Revised：2019-11-21
Funding
Affiliations
    1.College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055 , China
    2.Research Institute of Aerospace Special Materials and Processing Technology, Beijing 100074 , China

Corresponding:

DING Donghai (1983-), male, Associate Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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