摘要
本文以可膨胀石墨(EG)和1-丁基-3-甲基咪唑六氟磷酸盐离子液体([BMIM]PF6)为原料,在去离子水中通过绿色、简单的球磨法成功制备出了石墨烯负载离子液体杂化物(GnP@ILs),并对其结构组成进行表征.将GnP@ILs单独或与六苯氧基环三磷腈(HPCTP)混合加入到环氧树脂(EP)中,研究其对EP复合材料综合性能的影响.极限氧指数(LOI)、垂直燃烧(UL-94)和锥形量热测试结果表明,GnP@ILs能提高EP复合材料的阻燃性能,同时与HPCTP复配的EP复合材料(EP/7.2wt%HPCTP/1.8wt%GnP@ILs)的阻燃性能最好,LOI达到33.8%,并通过了UL-94V 0级.EP/7.2wt%HPCTP/1.8wt%GnP@ILs的热释放速率峰值和总热释放量分别降低了55.54%和44.28%.同时,[BMIM]PF6的加入增强了阻燃剂与EP的界面相容性,EP复合材料的拉伸强度和抗冲强度均明显提高.
In this article,ionic liquid doped graphene(GnP@ILs)was successfully synthesized by green and environmentally friendly wet ball milling from expandable graphite and 1-butyl-3-methylimidazole hexafluorophosphate ionic liquid([BMIM]PF6),and its surface morphology,crystal structure and chemical structure were characterized.GnP@ILs alone or mixed with hexaphenoxy cyclotriphosphazene(HPCTP)was added to epoxy resin(EP)to study its effect on the comprehensive properties of EP composites.Limiting oxygen index(LOI),vertical combustion(UL-94)and cone calorimetry test results show that GnP@ILs can improve the fire resistance of EP composites,and the EP composites(EP/7.2 wt%HPCTP/1.8 wt%GnP@ILs)has the best flame retardant performance,with an LOI of 33.8%,and has passed the UL-94 V 0 rate.The peak heat release rate and total heat release rate of EP/7.2 wt%HPCTP/1.8 wt%GnP@ILs were decreased by 55.54%and 44.28%,respectively.At the same time,the addition of[BMIM]PF6 enhanced the interface compatibility between the flame retardant and EP,and the tensile strength and impact strength of EP composites were significantly improved.
作者
张凯伦
陈伊阳
姚猛
王佳乐
王爱卿
屈红强
徐建中
Kailun Zhang;Yiyang Chen;Meng Yao;Jiale Wang;Aiqin Wang;Hongqiang Qu;Jianzhong Xu(The Flame Retardant Material and Processing Technology Engineering Research Center of Hebei Province,College of Chemistry and Environmental Science,Hebei University,Baoding 071002,China)
出处
《中国科学：化学》
CAS
CSCD
北大核心
2021年第9期1283-1292,共10页
SCIENTIA SINICA Chimica
基金
京津冀协同创新建设项目(编号:20541401D)
河北大学创新实验项目(编号:sy202045)资助。
关键词
石墨烯负载离子液体
六苯氧基环三磷腈
湿法球磨
环氧树脂
阻燃
ionic liquid doped graphene
hexaphenoxy cyclotriphosphazene
wet ball milling
epoxy resin
flame retardant
