The characterization of DOPO/MMT nanocompound and its effect on flame retardancy of epoxy resin
The characterization of DOPO/MMT nanocompound and its effect on flame retardancy of epoxy resin
复制标题
DOPO/MMT纳米复合物的表征及其对环氧树脂阻燃性能的影响
DOI：
10.1016/j.compositesa.2017.03.020
复制
发表时间：
2017-07-01
影响因子：
8.7
通讯作者：
Yang, Rongjie
中科院分区：
文献类型：
--
作者：
He, Xiangdong;Zhang, Wenchao;Yang, Rongjie
制备了DOPO/MMT纳米复合物，并与DOPO/MMT物理混合物对环氧树脂（EP）的阻燃性能进行了比较。采用FTIR、XRD、SEM和TEM等手段对纳米复合物和EP样品的结构进行了表征。蒙脱土层在DOPO和EP基体中具有良好的分散性，可以插层和剥离。通过极限氧指数测试、UL-94测试和锥形量热仪测试研究了EPS的阻燃性能。DOPO-MMT纳米复合物具有较好的阻燃性能（极限氧指数、UL-94、热释放速率峰值等）。DOPO和MMT的物理混合物。利用扫描电镜对锥形量热仪测试后的颗粒和焦的形貌进行了研究。EP样品颜色较浅、透明性较好，炭化物表面较光滑、孔隙较少，说明DOPO-MMT纳米复合物具有较好的阻燃性能，这是由于MMT层在EP基体中具有较好的分散性。(C)2017爱思唯尔有限公司版权所有。
A DOPO-MMT nanocompound has been prepared and used to flame-retard epoxy resin (EP) compared with the physical mixture of DOPO and MMT. The structures of nanocompound and EP samples have been characterized by FTIR, XRD, SEM and TEM. Intercalated and exfoliation of MMT layers in DOPO and EP matrix have been observed which means good dispersity. The flame retardancy of EPs has been studied by limiting oxygen index measurements, UL-94 testing, and cone calorimeter test. The DOPO-MMT nanocompound shows better flame retardancy (limiting oxygen index, UL-94, peak of heat release rate, etc.) than the physical mixture of DOPO and MMT. The morphologies of EPs and chars after cone calorimeter test have been studied by SEM. Lighter color and better transparency of EP samples, smoother and less porous structure of chars both prove the DOPO-MMT nanocompound shows better flame retardancy because of the better dispersity of MMT layers in EP matrix. (C) 2017 Elsevier Ltd. All rights reserved.