基于共价自适应网络的可回收再利用阻燃双马树脂研究  

Study on recyclable and reusable flame-retardant bismaleimide resin based on covalent adaptive network

作　　者：黎友霜 金秋硕 唐璟玥 贾梦 许博[1] LI Youshuang;JIN Qiushuo;TANG Jingyue;JIA Meng;XU Bo(School of Light Industry Science and Engineering,Beijing Technology and Business University,Beijing 100048,China)

机构地区：[1]北京工商大学轻工科学与工程学院,北京100048

出　　处：《中国塑料》2024年第11期57-63,共7页China Plastics

摘　　要：以双马来酰亚胺树脂(BMI)为原料,向其引入阻燃交联剂DOPO-DBA-F,用来制备一种兼具自愈合与阻燃性能的改性材料。利用傅里叶红外光谱仪(FTIR)、热重分析仪(TG)、差示扫描量热仪(DSC)、偏光显微镜(PLM)、极限氧指数仪、垂直燃烧测试仪和锥形量热仪对改性材料进行了结构表征与性能测试,并利用扫描电子显微镜(SEM)对其残炭形貌进行了分析。研究结果表明,可逆Diels-Alder(DA)键的形成有效改善了BMI的可回收性能,并通过DSC测试研究了呋喃基团和BMI之间可逆DA的存在。同时,阻燃交联剂的引入成功提高了可逆BMI的阻燃性能,其LOI值可以达到38.5%,UL94达到V-0级。In this study,DOPO-DBA-F as a flame-retardant cross-linking agent was introduced into the bismaleimide resin as a raw material to prepare a modified material with both self-healing and flame-retardant properties.The structure and performance of the modified material was characterized by using Fourier-transform infrared spectroscopy,thermogravimetry analysis,differential scanning calorimetry(DSC),polarized light microscopy,limiting oxygen index meter,vertical burning experiment,and cone calorimetry.The morphology of the residual char was observed by scanning electron microscopy.The results indicated that the formation of reversible Diels-Alder(DA)bonds effectively improved the recyclability of the bismaleimide resin.The presence of the reversible DA bonds between the furan groups and bismaleimide resin was confirmed by DSC.Meanwhile,the introduction of flame-retardant cross-linking agent successfully improved the flame-retardant properties of the modified material,resulting in a limiting oxygen index of 38.5% and a UL94 V-0 rating in the vertical burning experiment.

关 键 词：双马来酰亚胺树脂 DIELS-ALDER反应 自愈合 阻燃 

分 类 号：TQ314.248[化学工程—高聚物工业]