In this work, hydrothermal method was used to prepare the CaZnAl-CO₃ ternary layered double hydroxides (CaZnAl-CO₃-LDHs) with various Ca/Zn/Al molar ratios, which were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscope (FT-IR) and scanning electron microscopy (SEM) techniques. The obtained results demonstrate that the samples were well-crystallized and flake-structured. The CaZnAl-CO₃-LDHs used alone for thermal stability of poly (vinyl chloride) (PVC) resin, with different Ca/Zn/Al molar ratios and varying additive amounts, were investigated through the tests such as static thermal aging, mass loss and congo red, respectively. The optimum Ca/Zn/Al molar ratio and additive amount were 3.6:0.4:2 and 5 phr (parts per hundred PVC resin), respectively. In addition, the synergistic effects of Ca3.6Zn₀.4Al₂-CO₃-LDHs and CaSt2 were discussed in detail, showing better thermal stability compared with Ca3.6Zn_0.4Al₂-CO₃-LDHs used alone, and the optimum additive amounts of Ca3.6Zn_0.4Al₂-LDHs and CaSt₂ were 6 and 1.0 phr, respectively.

在这项工作中，使用水热法制备具有不同Ca / Zn / Al摩尔比的CaZnAl-CO ₃三元双层氢氧化物（CaZnAl-CO ₃ -LDHs），并通过X射线衍射（XRD），傅里叶表征。变换红外光谱仪（FT-IR）和扫描电子显微镜（SEM）技术。获得的结果证明样品是良好结晶的并且是片状结构的。CaZnAl-CO ₃-分别通过不同的Ca / Zn / Al摩尔比和不同的添加量对单独用于聚氯乙烯（PVC）树脂热稳定性的-LDHs进行了静态热老化，质量损失和刚果红等测试。最佳的Ca / Zn / Al摩尔比和添加量分别为3.6：0.4：2和5 phr（每100个PVC树脂中的份数）。此外，详细讨论了Ca3.6Zn ₀ .4Al ₂ -CO ₃ -LDHs和CaSt2的协同作用，与单独使用Ca3.6Zn _0.4 Al ₂ -CO ₃ -LDHs和最佳添加剂相比，具有更好的热稳定性。量的Ca3.6Zn _0.4 Al ₂ -LDHs和CaSt ₂ 分别为6和1.0 phr。