A novel kind of poly(vinyl chloride) (PVC) thermal stabilizer, zinc dehydroacetate (ZnL₂), was designed and synthesized using zinc acetate and dehydroacetic acid (DA) as raw materials, which had a unique "zinc burning" inhibition synergistic effect with calcium stearate (CaSt₂) that was 8 times greater than that of the CaSt₂/ZnSt₂ combination reference stabilizer. The structure and stability of ZnL₂ were confirmed by Fourier-transform infrared, elemental analysis, and thermogravimetric analysis. The stability distinction of ZnL₂ and ZnSt₂, and the stable effect of the two systems after being combined with CaSt₂, were investigated by the Congo red test, solution acidity test, and discoloration test. The results showed that in the Congo red test the stability time of ZnL₂ was 8.9 min, which was 1.3 times that of ZnSt₂, and the stability time of ZnL₂/CaSt₂ was 13 min, which was 1.4 times that of a traditional Ca/Zn stabilizer. Furthermore, the stability time of ZnL₂ was 36 min in the solution acidity test, which was 2 times higher than that of ZnSt₂, and the stability time was increased to 196 min after combining it with CaSt₂, which was 8 times greater than that of the Ca/Zn stabilizer. Moreover, the dehydrochlorination rate of PVC stabilized with ZnL₂ was slower than with other stabilizers. The system with ZnL₂/CaSt₂ could effectively delay “zinc burning” because of the excellent synergistic effect in the thermal aging test, with a stability time as long as 140 min. At the same time, the mechanism of PVC stabilization by ZnL₂ was studied in two simple experiments, and the stabilization mechanism of ZnL₂ in PVC degradation was speculated on.

以乙酸锌和脱氢乙酸（DA）为原料，设计合成了一种新型的聚氯乙烯（PVC）热稳定剂脱氢乙酸锌（ZnL ₂），具有独特的“烧锌”抑制协同作用。硬脂酸钙（CaSt ₂）比CaSt ₂ / ZnSt ₂组合参考稳定剂的硬脂酸钙大8倍。ZnL ₂的结构和稳定性通过傅立叶变换红外，元素分析和热重分析得到证实。ZnL ₂和ZnSt ₂的稳定性区别，以及与CaSt ₂结合后两个体系的稳定作用通过刚果红试验，溶液酸度试验和变色试验进行了研究。结果表明，在刚果红试验中，ZnL ₂的稳定时间为8.9 min，是ZnSt _2的1.3倍，ZnL ₂ / CaSt ₂的稳定时间为13 min，是传统的1.4倍。 Ca / Zn稳定剂。此外，溶液酸度测试中ZnL ₂的稳定时间为36分钟，是ZnSt _2的2倍，与CaSt ₂结合后的稳定时间增加到196 min ，是ZnSt _2的8倍。钙/锌稳定剂。此外，用ZnL ₂稳定的PVC的脱氯化氢速率比其他稳定剂慢。ZnL ₂ / CaSt ₂的体系由于在热老化试验中具有出色的协同作用，因此可以有效地延迟“锌的燃烧”，其稳定时间长达140分钟。同时，通过两个简单的实验研究了ZnL ₂稳定PVC的机理，并推测了ZnL ₂稳定PVC降解的机理。