Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets and preparation method and application thereof

一种PVC片材用Sn-Sb-Zn复合热稳定剂及其制备方法和应用

Abstract

本发明公开了一种PVC片材用Sn-Sb-Zn复合热稳定剂,包括如下重量份的组分:巯基乙酸甲基锡10~20份,巯基乙酸酯锑40~60份,有机酸锌盐5~15份,并公开了其制备方法及其作为PVC稳定剂的应用。本发明所得的复合热稳定剂产品质量高,低毒环保,配方中的锡含量较少,适用于各类PVC硬片材料,具有优异的初期和长期热稳定性,制品透明度高。
The invention discloses a Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets. The Sn-Sb-Zn composite heat stabilizer comprises, by weight, 10-20 parts of thioglycolic acid methyl tin, 40-60 parts of thioglycolic acetic ester antimony and 5-15 parts of organic acid zinc salt. The invention further discloses the preparation method of the Sn-Sb-Zn composite heat stabilizer and application of the Sn-Sb-Zn composite heat stabilizer as a PVC stabilizer. The composite heat stabilizer is high in product quality, low in toxicity, environment-friendly, less in tin content in a formula and applicable to various PVC hard sheet materials, has good initial and long-term heat stability, and is high in product transparency.

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