Oxidized multiwall carbon nanotube/silicone foam composites with effective electromagnetic interference shielding and high gamma radiation stability.

Oxidized multiwall carbon nanotube/silicone foam composites with effective electromagnetic interference shielding and high gamma radiation stability.
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具有有效电磁干扰屏蔽和高伽马辐射稳定性的氧化多壁碳纳米管/有机硅泡沫复合材料

DOI:
10.1039/c8ra03314e
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发表时间:
2018-07-02
期刊:
影响因子:
3.9
通讯作者:
Zhai, Maolin
Zhai, Maolin
中科院分区:
化学3区
文献类型:
--
作者:
Huan, Furong;Wang, Yimeng;Wang, Peiyu;Ma, Hui-ling;Chen, Xibang;Cao, Ke;Pei, Yongmao;Peng, Jing;Li, Jiuqiang;Zhai, Maolin

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将氧化多壁碳纳米管(o-MWCNTs)引入到有机硅泡沫中,通过溶液浇铸、发泡和交联反应制备了一种具有高γ辐射稳定性的电磁干扰(EMI)屏蔽材料。所制备的o-MWCNT/有机硅泡沫复合材料具有优异的机械强度和有效的EMI屏蔽性能,在0.5-6.4 mm厚度下具有上级EMI屏蔽效能(SE),其范围为26 - 73 dB,其中o-MWCNT为30 wt%。此外,该复合材料具有良好的γ辐射稳定性,表现出相对稳定的EMI屏蔽性能,并在吸收剂量为500 kGy的γ辐射后的硬度和耐压性的改善。这些结果表明,o-MWCNT/有机硅泡沫复合材料是一个有吸引力的候选人在一些电离辐射环境中的EMI屏蔽。
Oxidized multiwall carbon nanotubes (o-MWCNTs) were introduced into silicone foam to fabricate an electromagnetic interference (EMI) shielding material with high gamma radiation stability by solution casting followed by foaming and cross-linking reactions. The as-prepared o-MWCNT/silicone foam composites exhibited excellent mechanical strength and effective EMI shielding properties with superior EMI shielding effectiveness (SE) ranging from 26 to 73 dB at a 0.5–6.4 mm thickness with 30 wt% o-MWCNTs in the Ku band. Moreover, the composites have good gamma radiation stability, showing relatively stable EMI shielding properties and an improvement of hardness and pressure resistance after gamma irradiation with the absorbed dose of 500 kGy. These results indicate that the o-MWCNT/silicone foam composite is an attractive candidate for EMI shielding in some ionizing radiation environments.
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