铝酸锌在阻燃软质PVC中的应用  

The Application of Zinc Aluminate in Flexible PVC

作　　者：张博[1] 邓海建[1] 屈红强[1] 徐建中[1] 

机构地区：[1]河北大学化学与环境科学学院,保定071002

出　　处：《塑料助剂》2008年第1期36-39,共4页Plastics Additives

基　　金：河北省自然基金资助项目(编号:B2007000144);河北大学青年基金资助项目(编号2006Q147)

摘　　要：采用溶胶-凝胶法合成了具有尖晶结构的铝酸锌。用X射线衍射仪、扫描电镜表征合成的铝酸锌。通过热分析方法研究了用铝酸锌作阻燃剂的软PVC从室温到800℃的热降解过程,通过极限氧指数(LOI)、烟密度测试器测试手段研究了铝酸锌对软PVC的阻燃作用。结果表明:采用溶胶-凝胶法合成的铝酸锌具有尖晶结构、粒径较小且分布均匀。添加物质量1.5%的铝酸锌的软PVC样品LOI达29.8,吸光度降至53.0%,达到一般软质PVC的阻燃要求。The Zinc aluminate was synthesized by sol-gel method and characterized the structure through X-ray diffractometer, SEM. The thermal degradation demonstrated of flexible PVC treated with flame retardant aluminate zinc was studied by differential thermal analysis and thermogravimetry from ambient temperature to 800 ℃. The flame retardance of flexible PVC was determined through limited oxygen index （LOI） and smokescope. The results show that zinc aluminate, through the method of sol-gel, has the spinel structure, small diameter and uniform distribution. Flexible PVC added 1.5% mass zinc aluminate shows that the LOI attains to 29.8, and the light absorption ratio drop to 53%, which indicates it conform to the demand of flame retardance for soft PVC.

关 键 词：极限氧指数 铝酸锌 软质聚氯乙烯 阻燃 合成 应用 

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