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时间:2020-03-27
《溴系协效阻燃体系对PP阻燃和生烟性能的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、4;期ENG工INEER程INGP塑LAST料ICSA应PPLIC用ArIONV1J.43.NO.7u1.2Ol5doi:lO.3969~.issn.1001-3539.2015.07.025溴系协效阻燃体系对PP阻燃和生烟性能的影响舟颜龙,徐志胜(1中南大学防灾科学与安全技术研究所,长沙410075;2.湖南浩盛消防科技有限公司,长沙410004)摘要:利用极限氧指数、锥形量热仪和热重分析等方法对比研究了溴一锑和溴一铋协效阻燃体系对聚丙烯(PP)阻燃性能和生烟性能的影响。结果表明,八溴醚~氧化铋和八溴醚一三氧化二锑阻燃体系能明显提高
2、PP的阻燃性能;当溴一锑和溴一铋阻燃剂的质量比为3:l时,协同阻燃效果最佳,其中八溴醚一三氧化二锑和八溴醚一氧化铋的协同效率值分别为3.96和4-32。与纯PP相比,八溴醚的加入明显增大了PP的生烟速率fSPR)和总生烟量(TSR),但溴~铋阻燃PP的SPR峰值和TSR相比于溴一锑阻燃PP却分别下降了14.94%和14.32%。热重分析表明,溴一铋阻燃体系相比于溴一锑阻燃体系能较早地释放出HBr,并更大程度地降低PP的热裂解速率,从而更有效地提高溴系阻燃PP的协同阻燃效率并降低生烟量。关键词:聚丙烯;阻燃剂;阻燃性能;生烟性能;热解特
3、性中图分类号:TQ325.1+文献标识码:A文章编号:1001.3539但o15)o7—0114—04EffectofTBAB—Sb2O3andTBAB—Bi2O3onFlameRetardaneyandSmokePropertiesofPolypropyleneYrdnLong,2XuZhisheng(1.InstituteofDisasterPreventionScienceandSafetyTechnology,Cen~alSouthUniversity,Changsha410075,China;2HunanHystm—Fire
4、ScienceandTechnologyCo.Ltd.,Changsha410004,China)Abstract:Theinfluencesofbromine—antimonyandbromine—bismuthflameretardantsystemsontheflameretardancyandsmokepropertiesofpolypropylene(PP)werestudiedbylimitedoxygenindex,conecalorimeterandthermo—gravimetricanalyzer.Theresul
5、tsshowthattheflameretardantsystemsoftetrabromobisphenolAbis(2,3-dibromopropylether)(TBAB)一antimonytrioxide(Sb203)andTBAB—bismuthoxide(Bi2O3)obviouslyimprovetheflameretardancyofPRWhenboththemassratioofTBAB·Sb2O3andTBAB—Bi2O3are3:1,thesynergisticeffectsarethebest,whilethe
6、valuesofsynergisticeficiencyforTBAB—Sb203andTBAB—Bi2O3are3.96and4.32respectively.Inaddition,thepeakSPRandTSRofbromine—bismuthsystemdecreaseby14.94%and14.32%respectivelyincomparisonwithbromine—antimonysystemtreatedPP.whilebothbromine—antimonyandbromine—bismuthsystemsincr
7、easetheSPRandTSRcomparedtopurePP.ThermalgravimetricanalysisindicatesthatthehighersynergisticeffectivenessofbismuthoxidecomparedtoantimonytrioxideinthePP/TBABmixtureiscontributetobismuthoxidecancatalyzethedecompositionofTBABatlowertemperatureandreducetherateofvolatilizat
8、ionofpolypropylene.Keywords:polypropylene;flameretardant;flameretardancy;smokeproperty;pyrolysischaracteristic
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