The thermal stabilization behavior and mechanism of a metal organic framework with high thermal stability towards PVC

被引：5

作者：

Wang, Mei ^{[1
]}

Wang, Guanglin ^{[1
]}

Song, Xianghai ^{[2
]}

Jia, Puyou ^{[3
]}

Zhou, Bingliang ^{[1
]}

Bu, Quan ^{[1
]}

Yuan, Shouqi ^{[4
]}

机构：

[1] Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Jiangsu Univ, Sch Chem & Chem Engn, Inst Green Chem & Chem Technol, Zhenjiang 212013, Jiangsu, Peoples R China

[3] Chinese Acad Forestry CAF, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, 16 Suojin North Rd, Nanjing 210042, Peoples R China

[4] Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China

来源：

NEW JOURNAL OF CHEMISTRY | 2022年 / 46卷 / 30期

基金：

中国国家自然科学基金;

关键词：

OIL-BASED CA/ZN; POLY(VINYL CHLORIDE); PLASTICIZATION; CONSTRUCTION; DEGRADATION; HYDROXYL; CALCIUM;

D O I：

10.1039/d2nj02233h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thermal stabilizers play a crucial role in improving the thermal stability of PVC samples. However, the effect of thermal behavior of the stabilizer itself on PVC samples has been rarely reported. In this work, a metal organic framework Zn-Atz with a spatial three-dimensional structure was prepared and applied for stabilizing PVC. It was found that Zn-Atz displays both initial and long-term thermal stabilization effects on PVC. However, its long-term thermal stabilization effect is unsatisfactory due to the hydrogen chloride and unstable chlorine atom diffusion rate limitation in the pore structure of Zn-Atz. CaSt(2) and triphenyl phosphite (TP) can quickly absorb hydrogen chloride and chlorine free radicals produced in the PVC thermal degradation. When utilized together with Zn-Atz, CaSt(2) and TP can provide longer reaction time for the diffusion of hydrogen chloride and unstable chlorine atoms in the pore structure of Zn-Atz, to significantly improve the long-term thermal stability of PVC. Meanwhile, a possible synergistic stabilization mechanism of Zn-Atz, CaSt(2) and TP was proposed.

引用

页码：14395 / 14403

页数：9