植酸锌对固废基复合涂料阻燃性能的影响  

Effect of zinc phytate on the flame retardant of solid waste-based composite coatings

作　　者：薛阳倩 XUE Yangqian(College of Resources and Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)

机构地区：[1]西安建筑科技大学资源工程学院,陕西西安710055

出　　处：《新型建筑材料》2024年第11期132-137,共6页New Building Materials

摘　　要：以工业固废硅灰为基料,以植酸锌(ZnPA)作为生物基阻燃剂,以三聚氰胺(MEL)作为增效剂,构建阻燃体系,采用溶胶-凝胶法制备硅灰基复合防火涂料。通过锥形量热仪(CONE)、扫描电镜(SEM)、同步热分析仪和热解动力学等手段,研究了ZnPA用量对硅灰基复合防火涂料阻燃性的影响。结果表明,与未加ZnPA相比,加入2.5%ZnPA的硅灰基复合涂层的热释放速率峰值和产烟量分别降低了41.83%和42.84%,在731~940℃时的活化能Eα增大了22.73%,复合防火涂层在燃烧过程中形成了不可燃的互穿网络结构,提高了残余层的强度,有效提高了涂料的阻燃性能。With industrial solid waste silica fume as the base material,zinc phytate(ZnPA)as the bio based flame retardant,and melamine(MEL)as the synergist,a flame retardant system was established.The silica fume based composite fire retardant coating was prepared by the sol-gel method.The effects of ZnPA content on the flame retardancy of silica fume-based composite fireproof coatings were studied using a cone calorimeter(CONE),scanning electron microscopy(SEM),thermogravimetric analysis-differential scanning calorimetry,and pyrolysis kinetics.The results showed that compared with that without ZnPA,the peak heat release rate and smoke production of the silica fume-based composite coatings with the addition of ZnPA(2.5%)were reduced by 41.83%and 42.84%,respectively.The addition of ZnPA increased the activation energy(Eα)in the range of 731~940℃by 22.73%.The composite coating forms a non-combustible interpenetrating network structure during the combustion process,which improves the strength of the residual layer and effectively enhances the flame retardancy of the coating.

关 键 词：硅灰 植酸锌 防火涂料 热释放速率 

分 类 号：TU545[建筑科学—建筑技术科学]