The reinforcing effect of graphene nanosheets on the cryogenic mechanical properties of epoxy resins
The reinforcing effect of graphene nanosheets on the cryogenic mechanical properties of epoxy resins
复制标题
石墨烯纳米片对环氧树脂低温力学性能的增强作用
DOI：
10.1016/j.compscitech.2012.06.021
复制
发表时间：
2012-08-22
影响因子：
9.1
通讯作者：
Fu, Shao-Yun
中科院分区：
文献类型：
--
作者：
Shen, Xiao-Jun;Liu, Yu;Fu, Shao-Yun
石墨烯在增强环氧树脂复合材料的低温拉伸和冲击性能中的增强效果在0.05- 0.50%的重量分数下被检查。采用扫描电子显微镜、透射电子显微镜、小角X射线散射和力学测试等技术研究了石墨烯/环氧复合材料的微观结构和低温力学性能。结果表明，石墨烯在环氧树脂基体中的分散性在低含量时较好，但随着含量的增加，石墨烯在环氧树脂基体中发生聚集并变得更加分散。适量石墨烯的加入有效地提高了复合材料在液氮温度（77 K）下的低温拉伸强度和冲击强度。低温杨氏模量随着石墨烯含量的增加几乎线性地增加。此外，石墨烯/环氧树脂复合材料在室温（298 K）下的机械性能的结果也被提出用于比较的目的。(C)2012爱思唯尔有限公司保留所有权利。
The reinforcing effect of graphene in enhancing the cryogenic tensile and impact properties of epoxy composites is examined at a weight fraction of 0.05-0.50%. The micro-structure and cryogenic mechanical properties of the graphene/epoxy composites are investigated using scanning electron microscopy, transmission electron microscopy, small-angle X-ray scattering and mechanical testing techniques. The results show that the graphene dispersion in the epoxy matrix is good at low contents while its aggregation takes place and becomes severer as its content increases. And the cryogenic tensile and impact strength at liquid nitrogen temperature (77 K) of the composites are effectively improved by the graphene addition at proper contents. The cryogenic Young's modulus increases almost linearly with increasing the graphene content. Moreover, the results for the mechanical properties at room temperature (298 K) of the graphene/epoxy composites are also presented for the purpose of comparison. (C) 2012 Elsevier Ltd. All rights reserved.