摘要
将膨胀石墨(EG)、三聚氰胺(MEL)、多聚磷酸铵(ATP)与线性低密度聚乙烯(LLDPE)、乙烯醋酸乙烯酯共聚物(EVA)通过双螺杆挤出机熔融共混制备了阻燃复合材料。通过氧指数测定、水平燃烧测试、垂直燃烧测试、扫描电镜、热重分析仪研究了膨胀石墨(EG)的含量对复合材料的燃烧性能、燃烧机理、热稳定性的影响。结果表明,复配出的膨胀阻燃剂有良好的阻燃效果,EG的添加量为12.5%,EG、MEL、ATP配比为2∶1∶2时,复合材料达到难燃级别,阻燃机理满足膨胀成炭阻燃机理。EG含量的增加,复合材料热稳定性提高。
The expanded graphite （EG）/melamine （MEL）/ammonium polyphosphate （ APP ）/linear low Jensity polyethylene/ethylene- vinyl acetate copolymer composites were prepared by co- rotate twin screw extruder granulation. The effects of EG on the combustion performance, flame-retardant and thermal propertieswere studied by limit oxygen index （LOI） and horizontal/vertical burning test, thermal gravimetre. The results showed：Compounding intumescent flame retardant had good flame retardant. The composites reached the grade which was difficult to burn when EG adding 12.5% ,the ratio was 2 ： 1 ： 2. The flame-retardant mechanism was intumescent flame redardant mechanism. The thermostability of composites improved with the increasing of EG.
作者
敬波
李石磊
李骏
文香慧
戴文利
邹晓轩
JING Bo LI Shilei LI Jun WEN Xianghui DAI Wenli ZOU Xiaoxuan(Institute of Polymer Science and Engineering, College of Chemistry, Xiangtan University, Xiangtan 411105, China)
出处
《邵阳学院学报（自然科学版）》
2016年第4期87-92,共6页
Journal of Shaoyang University：Natural Science Edition
关键词
线性低密度聚乙烯
乙烯醋酸乙烯酯共聚物
膨胀型阻燃剂
膨胀石墨
linear low density polyethylene
ethylene- vinyl acetate copolymer
intumescent flameretardant
expanded graphite
