脂肪酸稀土用作PVC热稳定剂的热稳定性和透明性递变规律

Progressive Change Pattern of Heat Stabilities and Transparenciesof Rare Earth Fatty Acid Salts as Heat Stabilizers for PVC

研究了常见的脂肪酸稀土用作ＰＶＣ热稳定剂的热稳定性和透明性，结果表明，添加等物质的量的脂肪酸稀土的ＰＶＣ热稳定性和透明性具有与添加剂熔点一致的递变规律：硬脂酸稀土～棕榈酸稀土～肉豆蔻酸稀土～月桂酸稀土＞ 癸酸稀土＞ 辛酸稀土＞ 油酸稀土。根据这种关系分析。

The heat stabilities and transparencies of rare earth salts of several common fatty acids used as heat stabilizers of PVC were studied.The results showed that heat stabilities and transparencies of the rare earth fatty acid salts changed progressively in the same pattern as their melting points:stearate^palmitate^myristate^laurate>caprate>caprylate>oleate.According to this correlation,it could be inferred that the progressive change of compatibilities to the PVC matrix depending on the intermolecular forces accounted for the progressive change of heat stabilities and transparencies of rare earth fatty acid salts as heat stabilizers for PVC.