Fabrication of multifunctional graphene decorated with bromine and nano-Sb₂O₃ towards high-performance polymer nanocomposites

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• 作者：Guobo Huang^a ; Pingan Song^b ; ^{pasong@zafu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Lina Liu^b ; Deman Han^a ; Changhua Ge^a ; Rongrong Li^a ; Qipeng Guo^c ; ^{qguo@deakin.edu.au" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Carbon
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：98
• 期：Complete
• 页码：689-701
• 全文大小：4213 K

文摘

Despite great advances, it remains highly attractive but challenging to create high-performance polymeric materials combining excellent flame-retardancy and outstanding thermal, mechanical and electrical properties. We herein demonstrate a novel strategy for fabricating a multifunctional nano-additive (Br–Sb₂O₃@RGO) based on graphene decorated with bromine and nano-Sb₂O₃. Cone calorimetric tests show that incorporating 10 wt% Br–Sb₂O₃@RGO into thermoplastic polyurethane (TPU) strikingly prolongs the time to ignition and decreases the peak heat release rate by 72%. Besides, tensile strength and Young's modulus are enhanced by 37% and 820%, respectively. Meanwhile, the electric conductibility is increased by eleven orders of magnitude relative to the TPU matrix. This work provides a promising strategy for addressing the critical bottleneck with the existing flame retardants that only enhance flame retardancy at the expense of mechanical properties of polymeric materials. As-prepared high-performance TPU composites are expected to find many applications, especially in aerospace, tissue engineering, and cables and wires.