甘氨酸锌类螯合物GZC的合成和用作PVC热稳定剂的研究

Synthesis of the Glycinatozinc Chelates and Study on It Used as Heat Stabilizers of PVC

以甘氨酸、饱和脂肪酸为配位体合成了四种甘氨酸锌类螯合物(GZC_(18)、GZC_(12)、GZC_9、GZC_2),并逐一对它们的组成和结构进行了分析。多种静、动态热稳定性试验和 ZnCl_2紫外定量分析结果表明,这种化合物与硬脂酸钙等复合用作 PVC热稳定剂,是无毒高效品种,与通用钙锌类稳定剂相比,它们的“锌烧”活性明显降低,对 PVC 的热稳定作用有显著改善。

Four kinds of glycinatozinc chelates(GZC_(18)、GZC_(12)、GZC_9、GZC_2)wereprepared,using glycine and saturated fatty acid as ligands.Their structuresand compositions were analyzed respectively.By means of static and dynamicheat stability tests,and ultraviolet quantitative analysis of ZnCl_2,it was foundthat these chelates when used in presence of Ca stearate exhibited muchbetter heat stabilizing effect on PVC than the commercial Ca-Zn stabilizers,and without toxicity problems.The“zinc burning”effect of these stabilizerswas also reduced obviously.