摘要
将层状纳米黏土(Na^(+)-MMT)、层链状纳米海泡石(S9)和三维网状纳米SiO_(2)用于协效两种膨胀阻燃体系,以聚磷酸铵(APP)和成炭发泡剂(CFA)为膨胀阻燃剂C-IFR,以APP/季戊四醇(PER)/三聚氰胺(MEL)为膨胀阻燃剂T-IFR,与改性聚丙烯酸树脂(GPA)为成膜物质,一起制备膨胀型防火涂料GPA/C-IFR与GPA/T-IFR。采用耐火性能测试仪与耐水性测试仪对比研究了Na^(+)-MMT、S9及SiO_(2)对两种防火涂料耐火性能与耐水性后耐火性能衰减的影响。在此基础上采用锥形量热仪(FTT)与扫描电镜(SEM),分析Na^(+)-MMT、S9及SiO_(2)这3种维数纳米填料在涂料成炭性能、热释放及烟释放等气体释放量的差异。结果表明:层链状S9用于GPA/C-IFR与GPA/T-IFR复配体系的涂料耐火性能最佳,3种维度填料的耐水性后耐火性能皆明显衰减;在GPA/C-IFR复配体系涂料中,层链状S9分散性更均匀,炭层相对致密完整,利于提高涂料炭层的阻燃隔热性和热稳定性,降低涂料的热释放速率峰值,但不利于烟气释放量和CO释放量降低。
Layered nanoclay(Na^(+)-MMT),layered chain nano-sepiolite(S9),and 3D network nano-SiO_(2)were used to synergize two intumescent flame-retardant systems,which intumescent flame retardant(C-IFR)were developed with ammonium polyphosphate(APP)and carbon foaming agent(CFA),and intumescent flame retardant(T-IFR)were developed with APP/pentaerythritol(PER)/melamine(MEL),and a modified membrane material polyacrylic resin(GPA)were used to prepare intumescent fireproof coating GPA/C-IFR and GPA/T-IFR.The effects of Na^(+)-MMT,S9,and SiO_(2)on the fire resistance and water resistance after fire resistance attenuation of two coatings were compared by using a combustion back temperature tester and a water resistance tester.Based on this,Using cone calorimeter(FTT)and scanning electron microscope(SEM),the 3 Dnano fillers of Na^(+)-MMT,S9 and SiO_(2)were analyzed for difference on the carbon release performance,heat release and smoke release of coatings.The results shown that the layered chain S9 had the best fire resistance of the coatings used in the GPA/C-IFR and GPA/T-IFR compounding systems,and the fire resistance of the 3 Dfillers was significantly attenuated after the water resistance.The GPA/C-IFR compound in the coating of the system,the layered chain S9 had more uniform dispersion,and the carbon layer was relatively dense and complete,which was conducive to improving the flame retardancy and thermal stability and thermal stability of the carbon layer of the coating,reducing the peak value of the heat release rate of the coating,but not conducive to the amount of smoke released and CO released.
作者
刘建志
刘博
孔祥朋
陈现景
刘驰宇
邓小波
Liu Jianzhi;Liu Bo;Kong Xiangpeng;Chen Xianjing;Liu Chiyu;Deng Xiaobo(Shandong Institute for Product Quality Inspection,National Supervision and Inspection Center for Fire and Flame-retardant Product Quality(Shandong),Jinan 250102)
出处
《化工新型材料》
CAS
CSCD
北大核心
2020年第S01期100-103,107,共5页
New Chemical Materials
关键词
维数
纳米填料
防火涂料
耐火性能
耐水性
dimension
nano-filler
fire-resistant coating
fire resistance
water resistance
