CuO/Graphene Nanohybrids: Preparation and Enhancement on Thermal Stability and Smoke Suppression of Polypropylene

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• 作者：Yongqian Shi ; Xiaodong Qian ; Keqing Zhou ; Qinbo Tang ; Saihua Jiang ; Bibo Wang ; Biao Wang ; Bin Yu ; Yuan Hu ; Richard K. K. Yuen
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：September 25, 2013
• 年：2013
• 卷：52
• 期：38
• 页码：13654-13660
• 全文大小：405K
• 年卷期：v.52,no.38(September 25, 2013)
• ISSN：1520-5045

文摘

Cu/graphene nanohybrids were successfully prepared using a simultaneous chemical reduction method. Successful oxidation of Cu nanoparticles was carried out by the melt blending during preparation of the nanocomposites. Cu nanoparticles were well dispersed on graphene with a diameter of 3鈥? nm. XRD and TGA results revealed successful oxidation of Cu nanoparticles during processing. TEM results indicated that PP nanocomposites decorated with CuO/graphene were better dispersed than those added with graphene because the CuO acted as a spacer to keep graphene layers separated. The thermal property of the PP/G-Cu-1 and PP/G-Cu-2 was efficiently improved by around 30 掳C compared with native PP. Moreover, the smoke suppression property of PP/graphene, PP/G-Cu-1, and PP/G-Cu-2 nanocomposites were also improved by 28.9%, 35.8%, and 47.2%, respectively. The main reasons for the improvements were due to two factors: the good mass barrier effect of graphene and being easily reduced or the catalytic charring effect of CuO. This work represents a novel and simple process to synthesize CuO/graphene nanohybrids to reduce the fire hazards of polypropylene, indicating further application in research and industrial areas.