碳纤维/氧化石墨烯多尺度增强体的制备与表征

doi:10.11901/1005.3093.2015.020

材料研究学报

2016, Vol. 30

Issue (3): 229-234 DOI: 10.11901/1005.3093.2015.020

本期目录 | 过刊浏览

碳纤维/氧化石墨烯多尺度增强体的制备与表征

赵永华¹, 马兆昆¹(

), 宋怀河¹, 陈铭¹, 周正刚²

1. 北京化工大学化工资源有效利用国家重点实验室北京 100029
2. 中航工业复合材料技术中心北京 101300

Synthesis and Characterization of Carbon Fibers Multi-scale Reinforcement with Grafted Graphene Oxide

ZHAO Yonghua¹, MA Zhaokun^1,^*(

), SONG Huaihe¹, CHEN Ming¹, ZHOU Zhenggang²

引用本文:

赵永华, 马兆昆, 宋怀河, 陈铭, 周正刚. 碳纤维/氧化石墨烯多尺度增强体的制备与表征[J]. 材料研究学报, 2016, 30(3): 229-234.
Yonghua ZHAO, Zhaokun MA, Huaihe SONG, Ming CHEN, Zhenggang ZHOU. Synthesis and Characterization of Carbon Fibers Multi-scale Reinforcement with Grafted Graphene Oxide[J]. Chinese Journal of Materials Research, 2016, 30(3): 229-234.

全文: PDF(2216 KB) HTML

摘要:

利用改进Hummers法制备氧化石墨烯, 通过"grafting to"法接枝到用硅烷偶联剂Kh550处理的碳纤维表面, 从而获得碳纤维/氧化石墨烯多尺度增强体.通过扫描电镜(SEM),透射电镜(TEM),拉曼光谱(Raman),X射线光电子能谱(XPS)和红外光谱(IR)对获得的多尺度碳纤维的形貌,结构和表面官能团进行了表征, 并利用纤维电子强力仪和电阻率仪研究了接枝前后碳纤维力学性能和传导性能的变化.结果表明, 氧化石墨烯主要接枝在碳纤维表面的沟槽和缺陷处, 碳纤维表面不饱和碳原子数目增加, 微晶尺寸减小, 接枝后碳纤维的拉伸强度提高了9.8%, 断裂伸长率提高了13.1%, 而其电导率降低了11.6%.

关键词 ：无机非金属材料, 碳纤维, 氧化石墨烯, 硅烷偶联剂, 接枝

Abstract：

A kind of carbon fiber / graphene oxide multi-scale reinforcement was prepared by "grafting to" method, with raw materials of the graphene oxide fabricated by a modified Hummers method and the carbon fiber treated with silane coupling agent Kh550.The prepared product was characterized by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), Ramanspectroscopy (Raman), X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy (IR). The mechanical properties and the conductivity of the reinforced carbon fiber were measured by electronic tensile strength tester for fiber and resistivity instrument. The results showthatafter grafting, the graphene oxide can be grafted onto grooves and defects of the carbon fiber surface; the number of unsaturated carbon atom increases andthe size of microcrystalline decreases on the surface of the carbon fiber; andthe tensile strength andthe fractureelongation of single carbon fiber may be increased up to 9.8% and 13.1%, respectively andhowever the conductivity of carbon fiber is reduced by 11.6%.

Key words： inorganic non-metallic materials carbon fiber graphene oxide silane coupling agent grafting

收稿日期: 2015-01-13

ZTFLH:

TB321

作者简介: 马兆昆

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图1 碳纤维/氧化石墨烯多尺度增强体的表面结构特征

图2 碳纤维接枝前后的XPS分析

图3 碳纤维接枝前后的C1s分析

表1 T300-6k碳纤维接枝前后的表面元素分析(质量分数)

图4 碳纤维/氧化石墨烯多尺度增强体的红外光谱

图5 碳纤维/氧化石墨烯多尺度增强体的反应历程

图6 碳纤维/氧化石墨烯多尺度增强体的拉曼光谱

表2 碳纤维/氧化石墨烯多尺度增强体拉曼光谱的D峰和G峰的各参数

表3 碳纤维/氧化石墨烯多尺度增强体的力学性能

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