可膨胀石墨阻燃ABS分解成炭性能研究  

Study on Char Forming Properties of ABS Flame Retarded by EG

作　　者：王志伟[1] 李荣勋[1] 周兵[1] 刘光烨[1] 

机构地区：[1]青岛科技大学高性能聚合物及成型技术教育部工程研究中心,山东青岛266042

出　　处：《塑料科技》2011年第2期43-47,共5页Plastics Science and Technology

摘　　要：通过观测可膨胀石(墨EG)的宏观和微观结构,探讨了EG的分解成炭性能,利用热失重分析仪研究了EG与EG阻燃ABS的热失重行为,并采用扫描电镜观察了EG阻燃ABS膨胀炭层的微观结构。结果表明:EG自身膨胀后具有独特的"蠕虫"状结构,使EG炭层具有尺寸效应和负载作用;EG阻燃ABS形成了致密、耐高温的膨胀炭层,发挥隔氧、隔热作用,并且炭层呈现多孔的发泡堆砌结构,结构稳定性提高;EG膨胀炭层的负载催化作用促进了ABS的热氧降解反应和交联成炭反应同,时EG炭层能够保护ABS成炭产物提,高实际残炭量。The char forming properties of EG were studied by observing its macrostructure and microstructure.The thermogravimetric processes of EG and ABS/EG were studied by TG.The microstructure of flame-retardant ABS/EG was studied by SEM.The results show that EG has special ＂worm＂ structure after expansion,which imparts size effect and load effect to char layer of EG;flame-retardant ABS/EG can form compact and high temperature resistant char layer,which has heat insulation effect and oxygen insulation effect;the porous char layer structure can improve the structure stability of flame-retardant ABS/EG;the load catalyzing effect of EG char layer accelerates thermo-oxidation degradation and char crosslinking formation of ABS,meanwhile the char layer of EG can protect the char products of ABS,so it can increase the practical amount of char residue.

关 键 词：丙烯腈-丁二烯-苯乙烯共聚物 可膨胀石墨 阻燃 炭层结构 热失重分析 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]