磷钼酸铵金属盐协同膨胀型阻燃剂阻燃聚甲醛  

Synergistic Effect of Ammonium Phosphomolybdate Metal Salt and Intumescent Flame Retardant for Flame Retardant Polyformaldehyde

作　　者：鲁世科 杨正 王振华 房晓敏[1,2] 刘保英[1,2] 李建通 Shike Lu;Zheng Yang;Zhenhua Wang;XiaominFang;Baoying Liu;Jiantong Li(Henan Engineering Laboratory of Flame Retardant and Functional Materials,Henan University,Kaifeng 475004,China;College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,China)

机构地区：[1]河南大学阻燃与功能材料河南省工程实验室,河南开封475004 [2]河南大学化学化工学院,河南开封475004

出　　处：《高分子材料科学与工程》2022年第12期47-55,共9页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51703051);河南省高等学校重点科研项目(21A430005)。

摘　　要：采用不同金属盐对磷钼酸铵(AMP)进行改性,将其作为协效剂与膨胀型阻燃剂(IFR)复配用于阻燃聚甲醛(POM),对阻燃POM复合材料的阻燃性能和力学性能进行了评价,并通过锥形量热分析、热失重分析及扫描电子显微镜等对相关阻燃作用机理进行了探究。结果表明,磷钼酸铵金属盐(PMos)协同IFR阻燃聚甲醛复合材料具有优异的阻燃性能。当添加2%的PMos与28%的IFR协效阻燃POM时,不仅垂直燃烧等级(UL94)(3.2 mm)达到V-0等级,而且UL94(1.6 mm)也能达到V-1等级,极限氧指数(LOI)都在58%以上,尤其是镁锰双离子改性AMP协效阻燃POM的LOI达到了62.1%,相对于未添加协效剂的阻燃POM复合材料,其热释放速率和总烟释放量分别下降了28.8%和35.8%,并且复合材料的力学性能也有所提升。Ammonium phosphomolybdate(AMP)was modified by metal salts,which was compounded with the intumescent flame retardant(IFR)for flame retardant polyoxymethylene(POM).The flame retardant properties and mechanical performance of the POM composites were evaluated,and the flame retardant mechanism was analyzed by cone calorimetry analysis,thermo-gravimetric analysis,scanning electron microscope(SEM),etc.The results show that ammonium phosphomolybdate metal salt(PMos)combined with IFR has excellent flame retardant performance in POM.With 2%PMos and 28%IFR synergistically added in POM,not only the vertical combustion grade(UL94)(3.2 mm)can reach V-0 grade,but also the UL94(1.6 mm)can reach V-1 grade,and the limit oxygen index(LOI)can reach up to above 58%.Among them,the LOI of AMP modified by magnesium and manganese ion reaches 62.1%.Compared with the flame retardant POM composite without synergist,the heat release rate and total smoke release are decreased by 28.8%and 35.8%,respectively,and the mechanical properties of the composite are also improved.

关 键 词：磷钼酸铵 金属盐 膨胀型阻燃剂 聚甲醛 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]