APP/MPP/THEIC阻燃低密度聚乙烯制备及性能研究  

Study on the preparation and mechanism of APP/MPP/THEICintumescent flame retardancy low density polyethylene

作　　者：刘孟龙 欧红香[1] 冉镒柠 薛洪来 朱方[1] LIU Menglong;OU Hongxiang;RAN Yining;XUE Honglai;ZHU Fang(School of safety science and Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学安全科学与工程学院,江苏常州213164

出　　处：《功能材料》2024年第11期11076-11083,共8页Journal of Functional Materials

基　　金：国家自然科学基金项目(No.22378028,No.21878026);江苏省研究生教育教学改革研究项目(2022_55);常州大学教育教学研究重点课题(GJY2021005)。

摘　　要：研究利用聚磷酸铵(APP)、三聚氰胺聚磷酸盐(MPP)和三(2-羟乙基)异氰尿酸酯(THEIC)复配的无卤膨胀阻燃剂(IFR)与低密度聚乙烯(LDPE)经熔融共混制备膨胀阻燃LDPE材料。采用极限氧指数(LOI)、垂直燃烧、力学性能、热重分析和锥形量热等方法研究LDPE阻燃材料的性能。结果表明,当IFR的添加量为30%(质量分数),APP、MPP和THEIC的质量比为3∶1∶1时,复合材料LDPE3的LOI值为28.3%,UL-94达到V-0等级。锥形量热分析结果表明,与原始LDPE相比,LDPE3的热释放速率峰值(pHRR)和总放热量(THR)分别降低了62.2%和22.8%。在燃烧过程中,LDPE阻燃材料形成了致密稳定的炭层。由APP、MPP和THEIC组成的无卤膨胀型阻燃体系能有效提高LDPE复合材料的阻燃性。The study utilized halogen-free intumescent flame retardant(IFR)compounded with ammonium polyphosphate(APP),melamine polyphosphate(MPP)and tris(2-hydroxyethyl)isocyanurate(THEIC)to prepare intumescent flame-retardant LDPE materials by melt blending with low density polyethylene(LDPE).Limiting oxygen index(LOI),vertical combustion,mechanical properties,thermogravimetric analysis and cone calorimetry were used to study the properties of LDPE flame retardant materials.The results showed that when the addition of IFR was 30wt%and the mass ratio of APP,MPP and THEIC was 3∶1∶1,the LOI value of the composite LDPE3 was 28.3%,and UL-94 reached V-0 rating.Cone calorimetry analysis showed that the peak heat release rate(pHRR)and total heat release(THR)of LDPE3 were reduced by 62.2%and 22.8%,respectively,compared with pristine LDPE.During the combustion process,the LDPE flame retardant materials formed a dense and stable carbon layer.The halogen-free intumescent flame retardant system composed of APP,MPP and THEIC can effectively improve the flame retardancy of LDPE composites.

关 键 词：低密度聚乙烯 三聚氰胺聚磷酸盐 膨胀阻燃剂 阻燃性能 阻燃机理 

分 类 号：X937[环境科学与工程—安全科学] TQ322[化学工程—合成树脂塑料工业]