热重分析
热稳定性
热分解
聚氯乙烯
材料科学
稳定器(航空)
镧
氯
热分析
分解
核化学
红外光谱学
动力学
高分子化学
化学工程
无机化学
热的
复合材料
化学
有机化学
冶金
气象学
工程类
物理
机械工程
量子力学
作者
Mansurjon Juraev,Xiao Ya Zhou,Tao Xiao,Fang Cheng,Ye Qian Ge,Qiu Feng Ye,Yonghai Feng
出处
期刊:Materials Science Forum
日期:2021-05-01
卷期号:1032: 57-63
标识
DOI:10.4028/www.scientific.net/msf.1032.57
摘要
The structure of basic lanthanum orotate (LaOr) were characterized by elemental analysis and infrared spectroscopy. The thermal stability of polyvinyl chloride (PVC) was further studied by Congo red method, oven discoloration method and thermogravimetric analysis. The results showed that LaOr could prolong the oven discoloration time of PVC, and the color was not completely blackened until 120 min. It has a good synergetic effect with dibenzoyl methane (DBM), and the best effect is achieved when LaOr/DBM ratio is 1.8/1.2. The thermal decomposition kinetics experiment showed that adding DBM can effectively improve the activation energy of PVC/LaOr. The stabilization mechanism of PVC was studied by absorbing HCl method and infrared spectroscopy. The results showed that LaOr could not only replace the unstable chlorine atoms on PVC, but also promote the long-term thermal stability of PVC by absorbing HCl.
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