Three-Dimensional Conducting Networks and their Polymer Nanocomposites
To endow polymers with excellent electrically conductive performances, it is crucial to constructing three-dimensional conducting networks within polymer matrices.In the present work, highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing.The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional network of the enhanced aerogels is well retained even after compounding with epoxy resin.The synthesized aerogels are highly efficient in endowing epoxy with excellent electrical conductivity, electromagnetic interference (EMI) shielding efficiency and mechanical reinforcement.With only 0.33 wt％ of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB (Figure 1).Furthermore, the aerogel significantly increases the flexural strength and flexural modulus by 67％ and 20％, respectively, as compared to those of neat epoxy.Therefore, the phenolic resin-enhanced graphene aerogel holds a potential in the production of high performance polymer nanocomposites for EMI shielding.
Hao-Bin Zhang Yu Chen Zhong-Zhen Yu
State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering,Beijing University of Chemical Technology, Beijing 100029, China
国际会议
9th International Symposium on High-Tech Polymer Materials(第9届国际高技术高分子材料学术会议)(HTPM-9)
郑州
英文
21-21
2016-07-11（万方平台首次上网日期，不代表论文的发表时间）