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.
作者
柴云
宋一凡
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)
出处
《中国塑料》
CAS
CSCD
北大核心
2018年第9期53-56,112,共5页
China Plastics
关键词
阻燃剂
协效阻燃
疏水性
阻燃聚丙烯
flame retardant
synergism
hydrophobic
flame-retardant polypropylene
