Facile preparation of graphene nanoribbon filled silicone rubber nanocomposite with improved thermal and mechanical properties
Facile preparation of graphene nanoribbon filled silicone rubber nanocomposite with improved thermal and mechanical properties
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DOI：
10.1016/j.compositesb.2014.10.019
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发表时间：
2015-02-01
影响因子：
13.1
通讯作者：
Luo, Nicy Mei
中科院分区：
文献类型：
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作者：
Gan, Lu;Shang, Songmin;Luo, Nicy Mei
本研究通过对多壁碳纳米管进行解链，制备了石墨烯纳米粒子，并进一步研究了其作为硅橡胶填充剂的补强效果。结果表明，使用高锰酸钾和硫酸等强氧化剂可以将碳纳米管解链为石墨烯纳米管。采用简单的溶液共混法制备的石墨烯纳米粒子可以均匀分散在硅橡胶基体中。从热重分析曲线还发现，与原始硅橡胶相比，石墨烯纳米颗粒填充的硅橡胶纳米复合材料的热稳定性提高。此外，纳米填料的加入显著提高了复合材料的力学性能，当石墨烯纳米粒子的质量分数为2.0wt%时，复合材料的拉伸应力和杨氏模量分别提高了67%和93%。因此，可以预期石墨烯纳米粒子作为增强填料具有很大的应用潜力，以制备具有提高的热性能和机械性能的聚合物。(C)2014爱思唯尔有限公司版权所有。
In the present study, graphene nanoribbon was prepared through unzipping the multi walled carbon nanotubes, and its reinforcing effect as a filler to the silicone rubber was further investigated. The results showed that carbon nanotubes could be unzipped to graphene nanoribbon using strong oxidants like potassium permanganate and sulfuric acid. The prepared graphene nanoribbon could homogeneously disperse within silicone rubber matrix using a simple solution mixing approach. It was also found from the thermogravimetric analysis curves that the thermal stability of the graphene nanoribbon filled silicone rubber nanocomposites improved compared to the pristine silicone rubber. Besides, with the incorporation of the nanofiller, the mechanical properties of the resulting nanocomposites were significantly enhanced, in which both the tensile stress and Young's modulus increased by 67% and 93% respectively when the mass content of the graphene nanoribbon was 2.0 wt%. Thus it could be expected that graphene nanoribbon had large potentials to be applied as the reinforcing filler to fabricate polymers with increased the thermal and mechanical properties. (C) 2014 Elsevier Ltd. All rights reserved.