Preparation, mechanical and thermal properties of functionalized graphene/polyimide nanocomposites
Preparation, mechanical and thermal properties of functionalized graphene/polyimide nanocomposites
复制标题
功能化石墨烯/聚酰亚胺纳米复合材料的制备、力学和热性能
DOI：
10.1016/j.compositesa.2012.03.026
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发表时间：
2012-09
期刊：
影响因子：
--
通讯作者：
Yang, Sheng-Rong
中科院分区：
文献类型：
--
作者：
Zhang, Li-Bin;Wang, Jin-Qing;Wang, Hong-Gang;Xu, Ye;Wang, Zhao-Feng;Li, Zhang-Peng;Mi, Yong-Juan;Yang, Sheng-Rong
首先合成了带有异氰酸酯官能团的氧化石墨烯片（GONCO），然后采用溶液浇铸法和热亚胺化法制备了功能化石墨烯/聚酰亚胺（FGS/PI）纳米复合材料。通过傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）分析，对FGS/PI纳米复合材料制备过程中GONCO的化学变化进行了表征。结果表明，FGS分散在PI基体中，且随着FGS含量的增加，排列更加有序。当FGS含量为0.75wt%时，复合材料的拉伸强度和模量显著提高，提高幅度为60%，超过此含量后，复合材料的拉伸强度和模量有所下降。此外，热重分析（TGA）的结果表明，PI的热稳定性略有改善，通过引入FGS。
Graphene oxide sheets with isocyanate functional groups (GONCO) were firstly synthesized and functionalized graphene/polyimide (FGS/PI) nanocomposites were subsequently prepared by typical solution casting and thermal imidization. The chemical changes of GONCO during the preparation of FGS/PI nanocomposites were carefully characterized by Fourier transfer infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses. As a result, the morphology analysis indicated that the FGS were dispersed in the PI matrix and were aligned more orderly with increasing the FGS contents. The tensile strength and the modulus of FGS/PI nanocomposites were significantly increased by 60% with a small quantity of 0.75wt% FGS incorporated and decreased beyond that dosage. Moreover, the thermogravimetric analysis (TGA) results revealed that the thermal stability of PI was slightly improved by the incorporation of FGS.
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影响因子：
3.4
作者：
S. Chatterjee;B. T. T. Chu-B.-T.-T.-Chu-2262873342
通讯作者：
S. Chatterjee;B. T. T. Chu-B.-T.-T.-Chu-2262873342
影响因子：
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通讯作者：
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DOI：
10.5772/14665
发表时间：
2011-04
期刊：
--
影响因子：
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作者：
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通讯作者：
H. Salavagione;Gerardo Martínez;Gary Ellis
影响因子：
64.8
作者：
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通讯作者：
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