乙烯-丙烯酸酯-马来酸酐三元共聚物熔融插层有机蒙脱土对膨胀阻燃聚丙烯薄膜性能的影响

Influence of Ethylene-Acrylic Ester-Maleic Anhydride Terpolymer/Organic MMT Composite by Melting Intercalation on Intumescent Flame Retardant Polypropylene Film

以新型成炭剂(CFA)、改性聚磷酸铵(MAPP)、乙烯-丙烯酸酯-马来酸酐三元共聚物熔融插层有机蒙脱土(EMH-OMMT)母粒复配成膨胀阻燃剂(IFR),与聚丙烯(PP)共混后通过流延薄膜机制备膨胀阻燃PP薄膜。对其进行了阻燃性能、力学性能测试,并运用热重分析表征了其热分解过程。相比未熔融插层OMMT和传统的4A分子筛协效剂,EMH-OMMT不仅提高了体系的阻燃性能,使薄膜(0.2mm)在IFR添加28%时通过了VTM-0级,而且明显提高了体系的力学性能。

A kind of intumescent flame retardant（IFR） system consisting of novel char forming agent（CFA）,modified ammonium polyphosphate（MAPP）,EMH-OMMT,which prepared with OMMT/Ethylene-Acrylic Ester-Maleic Anhydride terpolymer by melting intercalation,was used in intumescent flame retardant PP film.Then fire-retardant property and mechanical properties of the PP film were tested,and the thermal decomposition process was characterized by means of thermal gravimetric analysis.Compared with the non-intercalation OMMT and conventional 4A-ZEO synergetic agents,the EMH-OMMT improved not only the flame retardancy but also the mechanical properties of the system.When the content of IFR was 28%,the flame retardant of PP film（0.2mm） reached to VTM-0 grade.