含DOPO/吲哚的磺胺类化合物的合成及阻燃环氧树脂
Synthesis of DOPO/Indole-Containing Sulfonamide Compounds and Their Flame-Retardant Epoxy Resins
许文迪 1陆嘉怡 1蔡博禹 1王璐泽 1罗钟琳 1王标兵1
作者信息
- 1. 常州大学材料科学与工程学院,江苏常州 213164
- 折叠
摘要
以吲哚-3-甲醛、磺胺胍和9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)为原料,合成了一种含DOPO/吲哚的磺胺类化合物(SIAD),并制备了环氧树脂(EP)/SIAD复合材料.加入6%SIAD后,EP/SIAD-6复合材料通过UL-94 V-0等级测试,LOI值提升至32%,其峰值放热率(535 kW/m2)、总热释放(64.2 MJ/m2)和平均有效燃烧热(18.1 MJ/kg)值较纯EP分别下降了37.3%,33.6%和22.5%,呈现出良好的火灾安全性.SIAD通过释放出含磷自由基和不可燃性气体等起到气相阻燃作用,同时通过促进形成致密的连续炭层在凝聚相中起到阻燃作用.
Abstract
An DOPO/indole-containing sulfanilamide compound(SIAD)was synthesized using indole-3-formaldehyde,sulfaguanidine and 9,10-dihydro-9-oxa-10-phosphophenanthrene-10-oxide(DOPO)as raw materials,and the EP/SIAD composite was prepared.After the incorporation of 6%SIAD,the EP/SIAD-6 composite passes the UL-94 V-0 testing and the LOI value is increased to 32%.Its pHRR(535 kW/m2),THR(64.2 MJ/m2)and av-EHC(18.1 MJ/kg)values are decreased by 37.3%,33.6%and 22.5%,respectively,as comparison with pure EP,it confirms that the composite has a good fire safety.SIAD acts as flame retardant in gas phase by releasing phosphate-containing free radicals and non-combustible gases,and also shows a flame retardant role in condensed phase by promoting the formation of dense continuous carbon layer.
关键词
环氧树脂/阻燃机理/磺胺类化合物Key words
epoxy resin/flame retardant mechanism/sulfanilamide compound引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据