摘要
研究了光氧老化对聚碳酸酯(PC)/原位还原石墨烯(IrGO)复合材料结构和性能的影响。傅里叶变换红外光谱分析显示PC分子在紫外辐照下发生了光氧化和弗里斯重排反应;同时在老化后,PC/IrGO辐照面的玻璃化转变温度和分子量均高于空白品PC。结合对样品辐照面的红外光谱逐层分析显示,还原石墨烯可以屏蔽紫外光从而抑制PC材料的光氧老化。力学性能测试和断面分析表明,相较于空白品PC,IrGO的存在使得PC/IrGO材料在长期光氧老化之后仍然能保持一定的韧性。
The effect of photo-oxidation aging on the structure and properties of polycarbonate(PC )/in-situ thermal reduced graphene oxide(IrGO)composites were studied.Fourier transform infrared spectroscopy analysis shows that PC molecules undergo photo-oxidation and Fries rearrangement under ultraviolet irradiation.At the same time,the glass transition temperature and molecular weight of irradiated surface of PC/IrGO are higher than those of control PC.The infrared spectra of irradiated sample surfaces show that IrGO could shield ultraviolet light and inhibit the photo-oxidation aging of PC materials.Mechanical properties test and cross-section analysis show that the presence of IrGO makes PC/IrGO materials maintain a certain toughness even after a long-term photooxidation aging compared with control PC.
作者
夏磊
孔米秋
黄亚江
杨其
李光宪
XIA Lei;KONG Mi-qiu;HUANG Ya-jiang;YANG Qi;LI Guang-xian(State Key Laboratory of Polymer Materials Engineering,College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2019年第8期81-86,123,共7页
China Plastics Industry
关键词
聚碳酸酯
原位还原石墨烯
原位热还原
光氧老化
Polycarbonate
In-situ thermal reduced Graphene Oxide
In-situ Thermal Reduction
Photo-Oxidation Aging
