期刊
COATINGS
卷 9, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/coatings9020094
关键词
graphene; intumescent flame retardant; antagonistic effect; heat release rate; cone calorimeter
资金
- Shanxi National Science Foundation [2017JQ5066]
- Shaanxi Provincial Education Department Fund [17JK0447]
- China Scholarship Council (CSC) [201808610034]
A comparative study between graphene and modified graphene oxide (mGO) on the flame retardancy of graphite doped intumescent flame retardant (IFR) coatings is preliminarily investigated by cone calorimeter (CC), XRD, and SEM, with the final aim of clarifying the interactions between different graphenes and graphite doped coatings (polyester resin-ammonium polyphosphate-urea-pentaerythritol). The CC results determine that graphene exerts an obviously antagonistic effect on flame resistance, evidenced by the increased peak heat release rate (p-HRR) of 56.9 kWm(-2) for SD8+graphene (sample coating contains graphite with a particle size of 8 m and 0.5 wt.% graphene as dopant), which increased by 80.6% compared with S-D8 (coating contains graphite with a particle size of 8 m); substitution with graphene or mGO imparts an acceleration of fire growth, because graphene inertness improves the viscosity of melting system, evidenced by the cracked appearance and porous structure of SD8+graphene. However, the higher reactivity of mGO favors the combustion; the barrier effect inhibits the transfer of mass and heat simultaneously, leading to a slight influence on flame retarding efficiency.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据