全文下载：2012020172
孙杰， 焦传梅*
（青岛科技大学 环境与安全工程学院，山东 青岛 266042）
摘要: 采用磷酸、季戊四醇和三聚氰胺为原料合成了一种新型膨胀型阻燃剂（IFR）。并以IFR为阻燃剂，氧化锌（ZnO）为协效阻燃剂，聚丙烯（PP）为基体树脂制备了膨胀型阻燃PP复合材料，重点研究ZnO与IFR之间的协效阻燃作用。采用氧指数测定仪、UL-94测定仪和锥形量热仪等手段研究阻燃PP复合材料的燃烧性能，用动态傅里叶变换红外光谱（FTIR）研究阻燃PP复合材料在不同温度下凝聚相的结构变化，初步揭示其热降解特性。实验结果表明：ZnO与IFR之间存在明显的协效阻燃效果；复合材料在240～330 ℃时，结构变化最剧烈；ZnO添加质量分数为1.6%时，炭层完整性最好，热释放速率峰值最低，降低幅度可达80%，UL-94为V-0级；ZnO添加质量分数为3.2%时，氧指数(LOI)最大为25.6%，UL-94为V-0级。
关键词: 协效阻燃； 氧化锌； 锥形量热仪； 热释放速率； 膨胀型阻燃剂； 聚丙烯
中图分类号: TQ 327文献标志码： A
Synergistic Flame Resistant Effect of Zinc Oxideand Intumescent Flame Retardant in PolypropyleneSUN Jie, JIAO Chuan-mei
(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: A new type of intumescent flame retardant (IFR) has been synthesized using phosphorus acid, pentaerythritol and melamine. Intumescent flame retardant PP composites have been prepared based on PP as matrix resin, intumescent flame retardant as flame retardants and zinc oxide (ZnO) as synergism. The synergist effect between ZnO and IFR has been studied using limiting oxygen index test, UL-94 test and cone calorimeter. The changes of solid-phase structure in the thermal degradation process have been studied by dynamic FTIR spectroscopy. The results showed that the synergist effect obviously did exist between ZnO and a new IFR; the structures of the composites changed severely from 240 ℃ to 330 ℃; when the sample containing 1.6% ZnO, the char morphology got the best integrity among all samples, and the peak heat release rate was also the lowest, decreased 80% than PP without flame retardant, the UL-94 of this sample was V-0; when the content of ZnO increased to 3.2%, LOI value got to 25.6%, and the UL-94 passed V-0.
Key words: synergism; zinc oxide; cone calorimeter; heat release rate; intumescent flame retardant； polypropylene
收稿日期：2011-10-31
作者简介： 孙杰(1986—)，男，硕士研究生.*通信联系人.
