Is expanded graphite acting as flame retardant in epoxy resin?

被引：42
作者：
Laachachi, Abdelghani [1 ]
Burger, Nicolas [1 ,2 ]
Apaydin, Kadir [1 ]
Sonnier, Rodolphe [3 ]
Ferriol, Michel [2 ]
机构：
[1] Luxembourg Inst Sci & Technol, Mat Res & Technol Dept MRT, L-4940 Hautcharage, Luxembourg
[2] Univ Lorraine, LMOPS EA 4423, F-57070 Metz, France
[3] Ecole Mines Ales, C2MA, F-30319 Ales, France
来源：
POLYMER DEGRADATION AND STABILITY | 2015年 / 117卷
关键词：
Expanded graphite; Flame retardant; Mechanisms; Polymer; Epoxy resin; CONE CALORIMETER; FLAMMABILITY; COMPOSITES;
D O I：
10.1016/j.polymdegradstab.2015.03.016
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this study, expanded graphite (EG) was investigated as flame retardant for epoxy resin based on DGEBA. Various amounts of EG (up to 50 wt%) were incorporated into the epoxy and the composites were studied using X-ray diffractometer, scanning electronic microscopy, cone calorimeter, pyrolysis-combustion flow calorimeter, thermogravimetric analysis, instrumented epiradiator and laser-flash method. Quite unexpectedly, EG leads to a significant increase in pHRR in cone calorimeter tests. Nevertheless, EG also allows delaying strongly the time-to-ignition. Such behavior was assigned mainly to the increase in thermal diffusivity which allows transferring heat faster from the surface to the bulk. (c) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：22 / 29
页数：8
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