新型阻燃线性低密度聚乙烯材料的制备及其性能研究  

Preparation and property of novel flame retardant linear low-density polyethylene

作　　者：张向锋 吴伟 雒焱[1,2] Zhang Xiangfeng;Wu Wei;Luo Yan(School of Energy Resources and Safety,Anhui University of Science and Technology, Huainan 232001;Key Laboratory of Coal Mine Safety and Efficient Exploitation of Ministry of Education,Anhui University of Science and Technology,Huainan 232001)

机构地区：[1]安徽理工大学能源与安全学院,淮南232001 [2]煤矿安全高效开采省部共建教育部重点实验室,淮南232001

出　　处：《化工新型材料》2019年第1期211-215,共5页New Chemical Materials

基　　金：安徽理工大学研究生创新基金项目(2017CX2067)

摘　　要：针对目前阻燃聚乙烯材料使用过程中存在的阻燃性能不高以及耐水性差等问题,将一种双层包裹的聚磷酸铵(MCAPP)与三(2-羟乙基)异氰尿酸酯(THEIC)复配,结合紫外光交联的方法,制备新型无卤膨胀阻燃线性低密度聚乙烯复合材料(LLDPE)。利用傅里叶红外光谱、溶解度测试等对聚磷酸铵(APP)和MCAPP的结构和耐水性能进行表征。通过氧指数测试、热失重分析、扫描电镜等研究MCAPP与THEIC组成的膨胀阻燃剂(IFR)对LLDPE的阻燃性及热稳定性能的影响。结果表明:MCAPP被成功地制备,且相比未包裹的APP,MCAPP的水溶解性大幅降低,耐水性能提高。当质量分数为30%的IFR添加到LLDPE基体中,并经光强度为180W/m2的紫外光辐照交联后,此种新型LLDPE/MCAPP/THEIC阻燃体系具有比LLDPE/APP/THEIC体系更加优良的阻燃性能、耐水性能及热稳定性能。In order to solve the problem of low flame retardancy and poor water resistance of flame retardant polyethylene materials,a novel halogen-free intumescent flame retardant linear low-density polyethylene(LLDPE)composites were prepared based on a double-microencapsulated ammonium polyphosphate(MCAPP)and tris(2-hydroxyethyl)isocyanurate(THEIC),through crosslinking by ultraviolet radiation.The chemical structure and water resistance of APP and MCAPP were studied through Fourier transform infrared spectroscopy(FT-IR)and water solubility.The synergistic effects between MCAPP and THEIC on the flame retardant properties and thermal stability of LLDPE were investigated by limiting oxygen index(LOI),thermogravimetric(TG)analysis and scanning electron microscope(SEM).The results showed that MCAPP was successfully obtained,and its solubility decreased greatly compared to that of pure APP with better water resistance.When IFR(MCAPP/THEIC)was introduced with 30%(mass fraction)loading into LLDPE matrix,and crosslinked by ultraviolet radiation with a light intensity of 180 W/m^2,LLDPE/MCAPP/THEIC showed more excellent flame retardant properties,water resistance and thermal stability than LLDPE/APP/THEIC.

关 键 词：聚乙烯 聚磷酸铵 紫外光交联 阻燃性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]