复配阻燃剂MSB/DOPS在环氧树脂中的协同阻燃性能  

Synergistic Flame Retardancy of MSB/DOPS in Epoxy Resin

作　　者：宦宣英 马仕凯 胥秋 叶小林[1] 黄永菲 宝冬梅[1] 杜海军[1] 文竹 张玉鹏 侯学清 Xuanying Huan;Shikai Ma;Qiu Xu;Xiaolin Ye;Yongfei Huang;Dongmei Bao;Haijun Du;Zhu Wen;Yupeng Zhang;Xueqing Hou(School of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China)

机构地区：[1]贵州民族大学化学工程学院,贵州贵阳550025

出　　处：《高分子材料科学与工程》2024年第12期61-70,共10页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(22261009,51863004);贵州省省级科技计划项目(CXTD[2021]005);贵州省高等学校绿色化学与资源环境创新团队(黔教技[2022]13号)。

摘　　要：单一的磷杂菲或三嗪阻燃剂在环氧树脂(EP)中的阻燃效果有限。为了进一步提高EP的阻燃性能,在阻燃剂质量分数为10%的条件下,将阻燃剂2,4,6-三-(4-羟基苯亚胺基)三嗪(MSB)和9,10-二氢-9-氧杂-10-磷杂菲-10-硫化物(DOPS)分别按照不同比例进行复配,采用熔融共混法将其应用于EP中,制备了EP复合材料,并测试了其阻燃性能,探究其双基协同阻燃规律。结果表明,单独添加MSB或DOPS时,极限氧指数(LOI)值分别为27.7%和30.6%,垂直燃烧(UL-94)等级分别为无阻燃级别和V-1级。而当阻燃剂质量分数为10%,DOPS在复合阻燃剂MSB/DOPS中的质量分数为60%时,复合材料的LOI值为29.7%,达到UL-94 V-0级;与纯EP相比,EP/MSB/DOPS-60%的热释放速率峰值(PHRR)和总热释放量(THR)显著降低,分别为378.56 kW/m2和82.74 MJ/m2,燃烧后形成了更加致密的膨胀炭层,残炭量提升至22.94%,即EP/MSB/DOPS-60%的阻燃性能优于EP/DOPS或EP/MSB。说明磷杂菲和三嗪阻燃剂具有良好的协同阻燃效应,有效提高了EP的阻燃性能。The flame retardant effect of single phosphaphenanthrene and triazine in epoxy resin(EP)is limited.In order to improve the flame retardant properties of EP,under the condition that the total mass fraction of flame retardant was 10%,2,4,6-tris-(4-hydroxyphenylimino)triazine(MSB)and 9,10-dihydro 9-oxa 10-phosphaphenanthrene 10-sulfide(DOPS)were compounded at different ratios,the melt blending method was applied to prepare EP composites and the flame retardant properties was measured to investigate the synergistic flame retardant law.The results demonstrate that the limiting oxygen index(LOI)is 27.7%and 30.6%when MSB or DOPS were added separately,and the vertical combustion(UL 94)grade is no rating and V 1,respectively.When the total mass fraction of flame retardant is 10%and the mass fraction of DOPS in the composite flame retardant MSB/DOPS is 60%,the LOI value of the composite EP/MSB/DOPS is 29.7%,reaching UL-94 V-0 level.Compared with pure EP,the peak heat release rate(PHRR)and total heat release(THR)are reduced to 378.56 kW/m2 and 82.74 MJ/m2,respectively,dense and expanded char layer is formed after combustion,and the char residue content rising to 22.94%.The flame retardant performance of EP/MSB/DOPS-60%is superior to EP/DOPS or EP/MSB.It is shown that there is a good synergic flame retardant effect between phosphaphenanthrene and triazine flame retardant,which effectively improves the flame retardant performance of EP.

关 键 词：9 10-二氢-9-氧杂-10-磷杂菲-10-硫化物 2 4 6-三-(4-羟基苯亚胺基)三嗪 复配 环氧树脂 协同效应 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]