疏水膨胀型阻燃聚丙烯的制备及与La2O3的协效阻燃  

Preparation of Hydrophobic Intumescent Flame Retardant Polypropylene and Its Flame-resistant Synergistic Effect with La_2O_3

作　　者：柴云 宋一凡[1,2] 许凯 张普玉 CHAI Yun;SONG Yifan;XU Kai;ZHANG Puyu(Institute of Functional Polymer Composites,Flame Retardant and Fuctional Materials Engineering Laboratory of Henan Province,Henan University,Kaifeng 475004,China;College of Chemistry and Chemcial Engineering,Henan University,Kaifeng 475004,China)

机构地区：[1]河南大学化学化工学院,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,功能聚合物复合材料研究所,河南开封475004

出　　处：《中国塑料》2018年第9期53-56,112,共5页China Plastics

摘　　要：采用四乙氧基硅烷(TEOS)作为改性修饰剂,分别对季戊四醇(PER)和聚磷酸铵(APP)进行表面改性,制备得到膨胀型阻燃剂(IFR),对改性后的IFR进行了红外光谱及热失重分析等表征,确认了硅的引入;向改性阻燃剂中加入纳米氧化镧(La_2O_3)作为阻燃协效剂,然后与聚丙烯(PP)混合,制备了疏水性膨胀型阻燃PP;研究了改性前后复合阻燃剂对PP阻燃性能和力学性能的影响。结果表明,改性后的阻燃体系表现出了较好的疏水性能,加入协效剂La_2O_3后,材料的阻燃性能和力学性能均较改性之前有所提高。Pentaerythritol and ammonium polyphosphate were surface-modified with tetraethoxysilane to prepare a series of intumescent flame retardants(IFR).The surface modification effect was confirmed by FTIR and TGA analysis.Nano Lanthanum Oxide(La 2 O 3)were added into the modified flame retardants as a synergistic additive for flame retardancy and then melt blended with polypropylene(PP)to prepare the hydrophobic flame-retardant PP.The modification technology,the flame retardant and mechanical properties of polypropylenes were investigated.The results indicated that the hydrophobic properties of the modified PP were improved,and their flame-retardant and mechanical properties were improved considerably with the addition of La2O3.

关 键 词：阻燃剂 协效阻燃 疏水性 阻燃聚丙烯 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]