羟基锡酸三聚氰胺盐及羟基锡酸金属盐复合物阻燃PVC的阻燃性能及热性能研究  

Study on Flame retardancy and Thermal Properties of Flexible PVC Treated with Melamine Hydroxystannate and Metal Hydroxy Stannate Composites

作　　者：厉娇蕊 武晓惠 于晓阳[1] 张海林[1] 武伟红[1] 

机构地区：[1]河北农业大学理学院,河北保定071001 [2]河北农业大学理工学院,河北沧州061100

出　　处：《塑料科技》2015年第12期91-95,共5页Plastics Science and Technology

基　　金：2013年河北省自然科学青年基金项目(E2013204086);河北农业大学创新创业训练项目(cxzr2014006)

摘　　要：合成了四种羟基锡酸三聚氰胺盐及羟基锡酸金属盐复合物,并作为新型膨胀阻燃剂应用于软聚氯乙烯(PVC)的阻燃消烟处理。极限氧指数(LOI)及烟密度等级(SDR)测试表明,这些复合物是软PVC有效的阻燃消烟剂。利用热重分析(TGA)、差热分析(DTA)并结合扫描电子显微镜(SEM)研究了阻燃PVC的热降解过程。结果表明:这些复合物不但能够在降解第一阶段降低PVC的起始分解温度,提高失重速率,而且能够促进PVC在第二阶段生成膨胀型的炭层。Four melamine hydroxystannate and metal hydroxy stannate composites were synthesized, and were used as novel intumescent flame retardant （IFR） and smoke suppression for flexible polyvinyl chloride （PVC）. The limiting oxygen index （LOI） and smoke density rating （SDR） tests demonstrate that these composites are effective flame retardants and smoke suppressants for flexible PVC. The thermal degradation progress of the flame retardant flexible PVC was investigated by thermal degradation analysis （TGA）, differential thermal analysis （DTA） and scanning electron microscopy （SEM）. The results show that these composites can not only decrease the initial decomposition temperature and increase the weight loss rate at the first stage, but also promote the char formation and expansion at the second stage.

关 键 词：阻燃 消烟 聚氯乙烯 热分析 膨胀阻燃 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ314.248