Effect of blend ratio on the morphology and electromagnetic properties of nanoparticles incorporated natural rubber blends

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• 作者：Pengfei Zhao^a ; Lefan Li^a ; ^c ; Yongyue Luo^a ; Zhen Lv^a ; ^{lz-zhen@sohu.com" class="auth_mail" title="E-mail the corresponding author} ; Kui Xu^a ; Sidong Li^b ; Jieping Zhong^b ; Zhifen Wang^c ; Zheng Peng^a ; ^{zpengcatas@126.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Polymer-matrix composites (PMCs) ; Microstructures ; Compression moulding ; Electromagnetic properties
• 刊名：Composites Part B: Engineering
• 出版年：2016
• 出版时间：15 August 2016
• 年：2016
• 卷：99
• 期：Complete
• 页码：216-223
• 全文大小：3826 K

文摘

Natural rubber/epoxidized natural rubber (NR/ENR) composites with 30 wt% conductive carbon black (CCB) were prepared by tow-roll mechanical mixing. Influences of NR/ENR blend ratios on the morphology and electromagnetic properties of CCB/NR/ENR composites were studied. Thermodynamic and morphological analysis indicated that co-continuous NR/ENR blend favored the formation of CCB network, providing the composites with superior electromagnetic properties. Electrical conductivity, dielectric loss and reflection loss over C-band (8–12 GHz) of CCB/NE/ENR composite were found to be a function of NR/ENR ratio, and reached the optimum value of 0.34 S/m, 0.31 and −23.58 dB when NR/ENR was 70/30 (wt./wt.), respectively. A morphology-promoted electromagnetic wave attenuation mechanism was proposed.