聚磷腈改性沸石咪唑酯骨架材料的制备及其在聚酯阻燃中的应用  

Preparation and application of polyphosphazene modified zeolite imidazolate framework materials for flame retardancy of poly(ethylene terephthalate)

作　　者：李宝洁 朱元昭 钟毅[1,2,3] 徐红 毛志平[1,2,3] LI Baojie;ZHU Yuanzhao;ZHONG Yi;XU Hong;MAO Zhiping(Key Laboratory of Science and Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;College of Chemistry and Chemical Engineering,Donghua University,Shanghai 201620,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学生态纺织教育部重点实验室,上海201620 [2]东华大学化学与化工学院,上海201620 [3]东华大学纺织科技创新中心,上海201620

出　　处：《纺织学报》2022年第11期104-112,共9页Journal of Textile Research

基　　金：国家重点研发计划项目(2018YFC1801502)。

摘　　要：为提高聚对苯二甲酸乙二醇酯(PET)的阻燃性能,以六水合硝酸锌和2-甲基咪唑制备沸石咪唑酯骨架材料(ZIF-8),之后用六氯环三磷腈和4,4-二羟基二苯砜对ZIF-8进行表面修饰合成一种ZIF-8聚环三磷睛-共磺酰基双酰/(PZS)亚微米颗粒,并与PET通过熔融共混制备PET阻燃复合材料。借助热重分析仪、极限氧指数仪、垂直燃烧仪、万能材料试验机以及扫描电镜等对复合材料的热稳定性、阻燃抗熔滴性、力学性能以及阻燃机制进行分析。结果表明:添加6%的ZIF-8/PZS亚微米颗粒使PET的极限氧指数(LOI值)提高到29.2%,并通过UL-94 V-0等级,而复合材料的力学性能没有受到严重影响;ZIF-8/PZS可以在气相和凝聚相中同时发挥效用,从而赋予PET复合材料优异的阻燃性能。In order to improve the flame retardancy of poly(ethylene terephthalate)(PET),a zeolite imidazolate framework material(ZIF-8)was fabricated from zinc nitrate hexahydrate and 2-methylimidazole.The surface of ZIF-8 were modified with hexachlorocyclotriphosphazene and 4,4-dihydroxydiphenylsulfone to synthesize a ZIF-8/PZS submicron particle.PET flame-retardant composites were prepared by melt blending with PET and their flame-retardant properties were investigated.Thermogravimetric analyzer,limiting oxygen index meter,vertical combustion meter,material testing machine and scanning electron microscope were used to analyze the thermal stability,flame retardancy,melt-dripping resistance,mechanical properties and flame-retardant mechanism of composite materials.The results show that the addition of 6%ZIF-8/PZS submicron particles increases the LOI value of PET to 29.2%and passes UL-94 V-0 level.The mechanical properties of the composite materials are not severely affected.ZIF-8/PZS can be effective in both the gas phase and the condensed phase,thereby giving PET composites excellent flame-retardant properties.

关 键 词：亚微米颗粒 阻燃纤维 抗熔滴 熔融共混 聚对苯二甲酸乙二醇酯 沸石咪唑酯骨架材料 

分 类 号：TS195.2[轻工技术与工程—纺织化学与染整工程]