李翠华,罗 涛,张小雪,等.固体表面HTPB和TDI固化反应原位红外光谱分析(英文)[J].深圳大学学报理工版,2016,(05):452-456.[doi:10.3724/SP.J.1249.2016.05452 ]
Li Cuihua,Luo Tao,Zhang Xiaoxue,et al.In situ FT-IR spectroscopic studies of curing reaction of HTPB and TDI on solid surface[J].Journal of Shenzhen University Science and Engineering,2016,(05):452-456.[doi:10.3724/SP.J.1249.2016.05452 ]
固体表面HTPB和TDI固化反应原位红外光谱分析(英文)

1)深圳大学化学与环境工程学院,广东深圳518060; 2)航天科技集团四院42所,湖北襄阳441003

分析化学; 漫反射红外光谱; 原位; 异氰酸酯基; 聚合反应; 聚氨酯

In situ FT-IR spectroscopic studies of curing reaction of HTPB and TDI on solid surface
Li Cuihua1, Luo Tao1, Zhang Xiaoxue1, Liu Jianhong1, Pang Aimin2, and Chi Xuhui2

Li Cuihua1, Luo Tao1, Zhang Xiaoxue1, Liu Jianhong1, Pang Aimin2, and Chi Xuhui21)College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China2)The 42nd Institute of the Fourth Academy, CASC, Xiangyang 441003, Hubei Province, P.R.China

analytical chemistry; diffuse reflectance infrared fourier transform spectroscopy(DRIFTS); in situ; isocyanate(NCO); curing reaction; polyurethane

DOI: 10.3724/SP.J.1249.2016.05452

备注

红外光谱采用漫反射模式(diffuse reflectance infrared fourier transform spectroscopy, DRIFTS)可直接对固体表面化学基团进行定性和定量分析. 通过在DRIFTS上安装热台,实时监测不同反应温度时异氰酸酯基的含量及其变化,可实现在固体表面原位表征端羟基聚丁二烯(hydroxyl-terminated polybutadiene, HTPB)与甲苯二异氰酸酯(toluene diisocyanate, TDI)的聚合反应. 通过不同温度时异氰酸酯基(—NCO)含量随反应时间的变化计算了活化能. 实验结果表明,原位漫反射红外光谱可准确监测HTPB与TDI的聚合反应,且实时快捷.

A diffuse reflectance infrared fourier transform spectroscopy(DRIFTS)was loaded down with extra heating device in order to determine the concentration of isocyanate(NCO)on the solid surface via the band area at 2 270 cm-1 in situ. The real-time progress of the curing reaction between toluene diisocyanate(TDI)and hydroxyl-terminated polybutadiene(HTPB)can also be monitored directly with only tiny amounts of the reactant mixtures at elevated temperatures. The corresponding reaction activation energy was obtained by fitting the data of NCO concentration at different temperatures. The experiment results indicate that DRIFTS in situ can determine accurately and rapidly the curing reaction of HTPB and TDI in real time.

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