期刊
FIRE SAFETY JOURNAL
卷 113, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.firesaf.2020.102994
关键词
Epoxy resin; Phosphaphenanthrene; Flame retardant; Blowing-out effect; Pyrolysis behavior
资金
- National Natural Science Foundation of China [51803159, 51903193, 51775400]
In order to meet the requirement in the fields with high flame resistance, the flame retardancy of epoxy resin (EP) must be ameliorated. Herein, a P/N/S-based flame retardant (PAD) was synthesized and used to prepare flame retardant EP. The combustion behavior, thermal property and flame retardant mechanism of the prepared EP thermosets were investigated. PAD induced the decomposition of EP thermoset in advance. Meanwhile, PAD enhanced the flame retardance of EP thermosets and reduced the fire risk of EP matrix. For example, with only 0.5 wt% phosphorus, EP/DDS/PAD-0.5 easily passed UL-94 V-0 rating and achieved a LOI value of 33.6%, together with the declined heat release rate (HRR). Impressively, the glass transition temperature (T-g) of EP/DDS/PAD thermosets dropped by only 3-13 degrees C, compared with that of EP/DDS. During combustion, PAD prompted the formation of an intumescent char layer in condensed phase, and exerted blowing-out effect in gaseous phase.
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