AlPi和PPBBA复配阻燃PET的燃烧性能  

Combustion Properties of Flame Retarding PET with PPBBA and AlPi Combination

作　　者：郭永萍[1] 罗钟琳[1,2] 王标兵[1,2] Guo Yongping;Luo Zhonglin;Wang Biaobing(Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science Engineering, Changzhou University,Changzhou 213164, China;Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou 213164, China)

机构地区：[1]江苏省环境友好高分子材料重点实验室,常州大学材料科学与工程学院,江苏常州213164 [2]江苏省光伏科学与工程协同创新中心,江苏常州213164

出　　处：《工程塑料应用》2017年第5期7-13,共7页Engineering Plastics Application

基　　金：国家自然科学基金项目(21304012);江苏省自然科学基金青年基金项目(BK20130249)

摘　　要：采用二乙基次膦酸铝(Al Pi)和聚丙烯酸五溴卞酯(PPBBA)复配,提高聚对苯二甲酸乙二酯(PET)的阻燃性能。测定了阻燃PET的极限氧指数(LOI)、垂直燃烧性能、热失重分析、动态流变性能,并采用扫描电子显微镜(SEM)观测了燃烧炭层的形貌。结果表明,Al Pi∶PPBBA分别以5∶5和10∶5复配,添加量分别为10%和15%时,LOI达到28.0%和33.3%,垂直燃烧测试均达到V–0级。复配阻燃体系的加入促进了PET的提前分解,阻燃剂主要在气相发挥阻燃作用,同时有利于成炭。当添加15%复配阻燃剂时,相比于纯PET,阻燃PET的最大分解速率降低21.2%,残炭率提高97.6%,提高了阻燃PET在高温下的热稳定性。在角频率为1 rad/s条件下,当添加10%和15%复配阻燃剂时,体系的复数黏度由39.4 Pa·s分别提高到296 Pa·s和1 970 Pa·s,具有较高的抗熔滴性能。烧结后的残留物高倍膨胀,炭层致密连续。Aluminium diethylphosphinate(AlPi)and polypentabromobenzyl acrylate(PPBBA)was cooperated to improve the flame retardance of poly(ethylene terephalate)(PET).Limiting oxygen index(LOI),the vertical burning test,thermogravimetric analysis,dynamical rheological behaviors were investigated and scanning electron microscope was used to observe the morphology of char combustion.The results show that the LOI reaches28.0%and33.3%when the additions of AlPi∶PPBBA are5∶5and10∶5respectively,and the additions are10%and15%respectively,the vertical combustion reaches V-0grade.The composite flame-retardant system promotes the decomposition of PET,the gas phase flame retardant is the prodominant mechanism,and they are also conductive to the formation of char residue.When15%of the complex flame retardant is added into PET,the maximum decomposition rate of PET flame retardant material is21.2%lower than that of pure PET,and the thermal stability of flame retardant PET material at high temperature is improved,and the residual carbon ratio is increased by97.6%.When the angular frequency is1rad/s and adding10%and15%of complex flame retardant,the complex viscosities of the system increase from39.4Pa·s to296Pa·s and1970Pa·s,thus a good anti-dripping property has been taken on.Moreover,the burining residue is highly intumescent with a compact and continuous protective carbon layer.

关 键 词：聚对苯二甲酸乙二醇酯 二乙基次膦酸铝 聚丙烯酸五溴卞酯 协同阻燃 抗滴落 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]