Preparation of thermally reduced graphene oxide and the influence of its reduction temperature on the thermal, mechanical, flame retardant performances of PS nanocomposites

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• 作者：Yongqin Han ; ^{yongqinhan@126.com" class="auth_mail" title="E-mail the corresponding author} ; Tianqi Wang ; Xiaoxiao Gao ; Tingxi Li ; ^{txli@sdust.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Qiang Zhang
• 关键词：A. Polymer-matrix composites (PMCs) ; A. Graphene ; B. Flame/fire retardancy ; B. Thermal properties
• 刊名：Composites Part A: Applied Science and Manufacturing
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：84
• 期：Complete
• 页码：336-343
• 全文大小：2902 K

文摘

In this article, we investigated the influence of thermally reduced graphene oxides (TGOs) at different reduction temperatures on the thermal, mechanical and flame retardant performances of polystyrene (PS). The results indicated that disordered expanded layer structure can be obtained as the reduction temperature increases from 200 to 500 and 800 °C (the resulted composites are named as PS/TGO2, PS/TGO5 and PS/GTO8, respectively), which could lead to better dispersion of TGO sheets in PS matrix. Dynamic mechanical thermal analysis showed that both the storage modulus and T_g of PS/TGO5 and PS/TGO8 nanocomposites are significantly improved compared with that of neat PS. Noticeable improvement in flame retardant performance were achieved with the addition of TGO5 and TGO8, particularly TGO8, due to the removal of the functional oxygen groups from GO and the barrier effect of intumescent and loosely structure of char layers.