In situ preparation of functionalized graphene oxide/epoxy nanocomposites with effective reinforcements

被引:411
作者
Bao, Chenlu [1 ]
Guo, Yuqiang [1 ]
Song, Lei [1 ]
Kan, Yongchun [1 ]
Qian, Xiaodong [1 ]
Hu, Yuan [1 ,2 ,3 ]
机构
[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Suzhou Inst Adv Study, Suzhou Key Lab Urban Publ Safety, Suzhou 215123, Jiangsu, Peoples R China
[3] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
EPOXY-BASED NANOCOMPOSITES; WALLED CARBON NANOTUBES; FLAME-RETARDANT; MECHANICAL-PROPERTIES; GRAPHITE OXIDE; POLYMER NANOCOMPOSITES; PHYSICAL-PROPERTIES; THERMAL-STABILITY; LAYERED SILICATE; CURING AGENT;
D O I
10.1039/c1jm11434d
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070305 [高分子化学与物理];
摘要
In order to obtain homogeneous dispersion and strong filler-matrix interface in epoxy resin, graphene oxide was functionalized via surface modification by hexachlorocyclotriphosphazene and glycidol and then incorporated into epoxy resin to obtain nanocomposites via in situ thermal polymerization. The morphology of nanocomposites was characterized by scanning electron microscopy and transmission electron microscopy, implying good dispersion of graphene nano-sheets. The incorporation of functionalized graphene oxide effectively enhanced various property performances of epoxy nanocomposites. The storage modulus of the epoxy nanocomposites was significantly increased by 113% (2% addition) and the hardness was improved by 38% (4% addition). Electrical conductivity was improved by 6.5 orders of magnitude. Enhanced thermal stability was also achieved. This work demonstrates a cost-effective approach to construct a flexible interphase structure, strong interfacial interaction and good dispersion of functionalized graphene in epoxy nanocomposites through a local epoxy-rich environment around graphene oxide sheets, which reinforces the polymer properties and indicates further application in research and industrial areas.
引用
收藏
页码:13290 / 13298
页数:9
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