Dispersion of graphene oxide and its flame retardancy effect on epoxy nanocomposites

Dispersion of graphene oxide and its flame retardancy effect on epoxy nanocomposites
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氧化石墨烯的分散及其对环氧纳米复合材料的阻燃作用

DOI:
10.1007/s10118-011-1037-7
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发表时间:
2011-02
影响因子:
4.3
通讯作者:
--
中科院分区:
化学2区
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--
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以完全氧化的石墨为原料,采用超声波法制备了氧化石墨烯,并用于改善环氧树脂的阻燃性能。研究了环氧树脂/氧化石墨烯纳米复合材料的剥离/分散性能、热稳定性和阻燃性能。X-射线衍射仪和透射电子显微镜证实了氧化石墨烯纳米片在环氧树脂基质中的剥离。锥形量热仪测试表明,环氧树脂/氧化石墨烯纳米复合材料的点火时间比纯环氧树脂长。与纯环氧树脂相比,纳米复合材料的放热速率曲线变宽,放热峰值降低。
Graphene oxide was prepared by ultrasonication of completely oxidized graphite and used to improve the flame retardancy of epoxy. The epoxy/graphene oxide nanocomposite was studied in terms of exfoliation/dispersion, thermal stability and flame retardancy. X-ray diffraction and transmission electron microscopy confirmed the exfoliation of the graphene oxide nanosheets in epoxy matrix. Cone calorimeter measurements showed that the time to ignition of the epoxy/graphene oxide nanocomposite was longer than that of neat epoxy. The heat release rate curve of the nanocomposite was broadened compared to that of neat epoxy and the peak heat release rate decreased as well.
DOI: 10.1038/nature04969
发表时间: 2006-07-20
期刊: NATURE
影响因子: 64.8
作者:
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