聚氯乙烯(PVC)是一种多用途塑料,且可用多种技术进行加工,其应用遍及整个国民经济的各个领域,但是PVC有一个缺点,在加热时会发生降解,这就需要在PVC加工中加入一些热稳定剂减缓这种降解。常用的热稳定剂有铅盐类、金属类、液体复合稳定剂、亚磷酸酯类以及有机锡类。在众多的稳定剂中,铅盐类稳定剂来源丰富、价格最低、稳定效果较好,是用量最大的稳定剂,在我国使用量约占65%。但传统的铅盐均为粉末状,其生产技术落后,能源消耗大,有毒铅盐粉末飞扬,污染环境,对人体 Polyvinyl chloride (PVC) is a multi-purpose plastic and can be processed by a variety of techniques. Its application covers all areas of the national economy. However, PVC has a disadvantage that it degrades when it is heated. This requires PVC processing. Add some heat stabilizers to slow this degradation. Commonly used thermal stabilizers include lead salts, metals, liquid compound stabilizers, phosphites, and organic tins. Among the many stabilizers, lead salt stabilizers are rich in source, lowest in price, and have good stability. They are the stabilizers with the largest amount of usage. They account for about 65% of the use in China. However, the traditional lead salts are all powdery, their production technologies are backward, their energy consumption is high, toxic lead salt powder is flying, and they pollute the environment.