O,O-二丁基二硫代磷酸锌制备及光谱分析

Preparation of Zinc O,O,O',O'-Tetrabutyl Bis(Phosphorodithioate)and Its Spectral Analysis

采用二步法合成出O,O-二丁基二硫代磷酸锌(ZBPD),通过UV-Vis,FTIR,TG-DSC对其进行检测和表征,揭示出ZBPD的微观结构和内在规律性。UV-Vis检测出了ZBPD在212.0和227.0nm有二个吸收峰,分别是n→σ*和π→π*电子跃迁产生的,吸收峰强度随ZBPD浓度呈规律性变化,为企业ZBPD产品质量检测,提供了基础数据。FTIR揭示了ZBPD分子内部的各元素之间的化学键键型。TG-DSC检测出ZBPD的质量变化与热效应两种信息,ZBPD的DSC曲线很复杂,84.3℃存在一个很宽的吸收峰,245.0,344.3,476.1,518.7℃存在四个放热峰,和ZBPD分子结构和少量杂质有关,ZBPD分解温度偏高,为采用硫化仪研究ZBPD的橡胶硫化性能提供参考。本研究为企业选定工作标准品,对ZBPD工业化生产进行跟踪检测,评判ZBPD的产品性能指标,填报立项ZBPD化工行业标准的申报,撰写标准草案提供基础实验数据。

In the study, zinc O, O,O＇ ,O＇-tetrabutyl bis（phosphorodithioate） （ZBPD） was synthesized with two-step method firstly. ZBPD was detected and characterized with UV-vis, FT-IR andTG-DSC. Its micro-structure and intrinsic regularity were revealed. Two absorption peaks were detected with UV-Vis at 212.0 and 227.0 nm respectively caused by n→σ＊ ,π→π＊ electron transition. The intensity of peaks was changed with the regularity with different ZBPD concentration. It could provide the basic data with the enterprise of ZBPD product quality inspection. Chemical bond types into ZBPD molecule were revealed by FT-IR. Two kinds of information were detected by TG-DSC as quality change and thermal effect. The DSC curve of ZBPD was very complex. There were a wide absorption peak of 84. 3 ℃, four exothermic peaks of 245.0, 344. 3, 476.1, 344.3 ℃, due to the molecular structure of ZBPD and small amounts of impurities. The decomposition temperature of ZBPD was very high. It could provided reference with research on rubber vulcanizing properties by ZBPD on rubber vulcanizing machine. This study could provide the basis experimental data on the enterprises to designate the working standard tracing detection of ZBPD industrialized production. Performance index of ZBPD was judged. The project of ZBPD industry standard could be declared by the enterprises, written a draft standard.