摘要
采用红外(IR)光谱开展了真空硅脂的结构研究,实验发现,真空硅脂的红外吸收模式包括νas CH3-真空硅脂、νs CH3-真空硅脂、δCH3-真空硅脂、νSi-O-真空硅脂、ρCH3-真空硅脂和νSi-C-真空硅脂;进一步开展了真空硅脂的变温红外(TD-IR)光谱研究,实验发现,随着测定温度的升高,真空硅脂νSi-C-真空硅脂对应的吸收频率及强度发生明显的改变;最后开展了真空硅脂νSi-C-真空硅脂的二维红外(2D-IR)光谱研究。本项研究拓展了三级红外光谱技术在重要有机硅材料(真空硅脂)结构及热稳定性的方面的研究范围。
The lotime molecular structure had been studied by infrared(IR)spectrum,which infrared absorption modes includeνas CH3-lotime,νs CH3-lotime,δCH3-lotime,νSi-O-lotime,ρCH3-lotimeandνSi-C-lotime.The variable temperature-dependent infrared(TD-IR)spectrum of lotime were studied.The experimental results show,with the increase of the measuring temperature,the infrared absorption frequency and intensity of lotimeνSi-C-lotimehad changed obviously.Finally,two-dimensional infrared(2 D-IR)spectrum of lotimeνSi-C-lotimewere studied.The study demonstrated the key roles of three-level infrared spectrum in the analysis of structure and thermal stability of important silicone materials(lotime).
作者
魏英东
姜超伟
张丽娜
白曼
齐哲真
王欣
Wei Yingdong;Jiang Chaowei;Zhang Lina;Bai Man;Qi Zhezhen;WangXin(School of Chemical Engineering,Shijiazhuang University,Shijiazhuang 050035,China)
出处
《煤炭与化工》
CAS
2020年第10期140-146,155,共8页
Coal and Chemical Industry
基金
石家庄学院大学生创新创业训练计划项目(scxm012)
河北省大学生创新创业训练计划项目
关键词
真空硅脂
红外光谱
变温红外光谱
二维红外光谱
lotime
infrared spectrum
temperature-dependent infrared spectrum
two-dimensional infrared spectrum
