摘要
文中将六氯环三磷腈(HCCP)和三聚氰胺(MEL)通过缩聚法包覆于聚磷酸铵(APP)单体表面,得到改性聚磷酸铵(MAPP)。以木质素(Lig)为碳源、MAPP为酸源和气源组成膨胀型阻燃剂(IFR),用于阻燃高密度聚乙烯(HDPE)电缆料的制备。极限氧指数(LOI)、垂直燃烧等级(UL-94)测试结果表明,改性后的MAPP/Lig对HDPE有更高的阻燃效率。当添加MAPP/Lig质量分数为30%,且配比为3/1时,HDPE复合材料达到垂直燃烧V-1等级,LOI值达到28.6%。锥形量热(CCT)测试结果表明,MAPP/Lig阻燃剂相较APP/Lig阻燃剂可以明显减小HDPE的总热释放量和热释放速率。力学测试表明,乙烯-辛烯共聚物(POE)可以使复合材料的断裂伸长率显著提升。以MAPP取代APP,会导致HDPE复合材料的电气性能降低,但仍能符合标准使用要求。
The modified ammonium polyphosphate(MAPP)was obtained by the condensation of hexachlorocyclotriphosphazene(HCCP)and melamine(MEL)onto the surface of ammonium polyphosphate(APP)monomers.Using lignin(Lig)as carbon source,MAPP as acid and gas source to form an expanding flame retardant(IFR)for the preparation of flame-retardant high-density polyethylene(HDPE)cable materials.The results of the limiting oxygen index(LOI)and vertical burning class(UL-94)tests indicate that the modified MAPP/Lig has a higher flame retardant efficiency for HDPE.When the mass fraction of MAPP/Lig is 30%and the ratio is 3/1,the HDPE composite material reaches the vertical combustion V-1 grade,and the LOI value reaches 28.6%.Cone calorimetry(CCT)testing shows that MAPP/Lig flame retardant can significantly reduce the total heat release and heat release rate of HDPE compared to APP/Lig flame retardant.Mechanical test results show that ethylene octene copolymer(POE)can significantly increase the elongation at break of the composite materials.Replacing APP with MAPP will reduce the electrical performance of the HDPE composite materials,but still meet the standard usage requirements.
作者
齐磊杰
冯希波
李岩
宋浩源
宋长宇
Leijie Qi;Xibo Feng;Yan Li;Haoyuan Song;Changyu Song(Power China Hubei Electric Engineering Co.,Ltd.,Wuhan 430040,China;Department of Electric Power Engineering,North China Electric Power University,Baoding 071003,China;Zhangjiakou Jiaotou Industrial Co.,Ltd.,Zhangjiakou 075000,China)
出处
《高分子材料科学与工程》
北大核心
2025年第1期70-77,共8页
Polymer Materials Science & Engineering
关键词
高密度聚乙烯
木质素
阻燃性能
力学性能
电气性能
high density polyethylene
lignin
flame retardant properties
mechanical properties
electrical properties
作者简介
通讯联系人:李岩,主要从事电缆及绝缘材料应用研究工作,E-mail:yan.li@ncepu.edu.cn。
