厦门大学学报（自然科学版）2017，Vol.56Issue(4)：474-480,7.DOI:10.6043/j.issn.0438-0479.201702027
蒙脱土/还原石墨烯/聚乙烯醇复合薄膜的制备及其导热性能
Synthesis and Thermal Conductivity of Montmorillonite/Graphene/Poly (vinyl alcohol) Composite Films
摘要
Abstract
In this paper,graphene oxide (GO) and exfoliated montmorillonite (MMT) hybrid (MMT/GO) were used as a dual filler to prepare MMT/graphene/poly(vinyl alcohol) (MMT/rGO/PVA) nanocomposites via solution blending.Our results show that GO prepared at-40 ℃ exhibits less defects,suggesting higher thermal conductivity when filled with polymer composites.The presence of exfoliated MMT sheets greatly prevents the aggregation of graphene sheets because of the hydrogen-bond interaction and crosslinking effects (sodium ions serve as "crosslinkers") between GO and MMT sheets.Meanwhile,the hydrogen bonds between the PVA matrix and the MMT/GO dual filler improve their dispersion and their interfacial interaction,resulting in the significant decrease in interfacial thermal resistance.The effects of the ratio of MMT to GO and the filling percentage of the dual filler on the thermal conductivity of MMT/rGO/PVA nanocomposites were investigated.The thermal conductivity of MMT/rGO/PVA nanocomposites with 12% filling of MMT/GO (2∶1,by mass)dual filler is 66.4 W/(m·K),which is 132 times greater than that of pure PVA film.关键词
石墨烯/聚乙烯醇/蒙脱土/复合薄膜/导热性能Key words
graphene/poly (vinyl alcohol) (PVA)/montmorillonite(MMT)/composite films/thermal conductivity分类
数理科学引用本文复制引用
朱首骥,邓顺柳,谢素原..蒙脱土/还原石墨烯/聚乙烯醇复合薄膜的制备及其导热性能[J].厦门大学学报（自然科学版）,2017,56(4):474-480,7.基金项目
国家自然科学基金(21571151,U1205111) （21571151,U1205111）
