膨胀的
聚磷酸铵
阻燃剂
锥形量热计
环氧树脂
材料科学
可燃性
季戊四醇
极限氧指数
复合材料
烧焦
三聚氰胺
烟雾
化学工程
核化学
热稳定性
热重分析
炭化
涂层
傅里叶变换红外光谱
复合数
化学
燃烧
有机化学
工程类
作者
Chaoxia Zhao,Zhen‐Jun Luo,Deyan Kong,Huaqiao Peng,De‐Fu Li,Nima Esmaeili
摘要
Abstract This work reports an effective self‐intumescent flame retardant system for epoxy resin (EP) based on the remarkable synergistic effect between Cu 2 O and ammonium polyphosphate (APP). The effect of Cu 2 O/APP on improving EP's fire performance was evaluated by limited oxygen index (LOI), UL‐94, and cone calorimeter test. The optimal mass ratio of Cu 2 O: APP was shown to be 2:8. With 15 wt% total flame retardant loading, the EP with optimum Cu 2 O/APP formulation reached V‐0 classification and high LOI (33.5%), while the EP with APP only got NR and low LOI (26.5%). Additionally, the pHRR, total heat release, total smoke production, CO production of the EP with optimum Cu 2 O/APP formulation were primarily decreased. All the improvements were ascribed to the formation of the self‐intumescent char layer of EP resulted from the catalyzing effect of Cu 2 O for char formation and CO to CO 2 conversion. These findings will consolidate approaches for conferring flame retardancy to flammable polymers or their blends.
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