膨胀石墨(EG)协同新型磷系膨胀阻燃环氧树脂的制备及阻燃性能研究Preparation and Performance of Expanded Graphite Added Phosphorus Intumescent Flame-Retardant Epoxy Resins
卢林刚,陈英辉,郭楠,杨守生
摘要(Abstract)：
经六(4-DOPO羟甲基苯氧基)环三磷腈(DOPOMPC)和聚磷酸铵(APP)处理环氧树脂(EP)的基础上加入可膨胀石墨(EG),制备新型膨胀阻燃环氧树脂复合材料(DOPOMPC/APP/EG/EP)。通过极限氧指数(LOI)、水平垂直燃烧(UL-94)、锥形量热(CONE)、扫描电镜(SEM)等方法,研究了协效剂EG加入对复合材料阻燃性能和力学性能的影响。结果表明,适量EG与DOPOMPC/APP体系有良好的协同阻燃作用,并提高了环氧树脂复合材料力学性能。当DOPOMPC/APP/EG总添加量为22%(DOPOMPC/APP/EG的比例为5/5/1),复合材料LOI值高达38.4%;热释放速率峰值(pk-HRR)、比消光面积(av-SEA)、有效燃烧热平均值(av-EHC)和一氧化碳释放率平均值(av-CO)较纯EP(EP0)分别降低了81.8%,35.5%、29.0%和33.3%;其拉伸强度、弯曲强度和冲击强度比EP1(10%DOPOMPC/10%APP/EP)体系分别提高了70.5%、1.5倍和2.6倍。
关键词(KeyWords)： 膨胀石墨;环氧树脂;膨胀阻燃剂;协同阻燃
基金项目(Foundation): 河北省自然科学基金项目(E2012507008)
作者(Author): 卢林刚,陈英辉,郭楠,杨守生
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