Halogen-free and flame-retardant PA and preparation method thereof

The invention discloses a halogen-free and flame-retardant PA, and belongs to the technical field of PA material preparation. The halogen-free and flame-retardant PA is prepared from PA, nanometer aluminum nitride, a modified flame retardant, nanometer silicon dioxide, catkin cotton, melamine cyanurate, polyethanol, polyvinyl chloride resin, expanded vermiculite, di(2,3-dichloropropyl)octyl phosphate, tri(neopentyl glycol phosphate)methylamine, a silane coupling agent KH-550, vinyltriethoxysilane and hexachlorocyclotriphosphazene. The halogen-free and flame-retardant PA is prepared by preparing a base material, preparing a modified material and mixing the base material and the modified material. The PA material prepared by the invention has excellent fire resistance. 本发明公开了一种无卤阻燃PA，属于PA材料制备技术领域，包括以下原料：PA、纳米氮化铝、改性阻燃剂、纳米二氧化硅、柳絮棉、三聚氰胺氰尿酸盐、聚乙醇、聚氯乙烯树脂、膨胀蛭石、磷酸二（2,3-二氯丙基）辛酯、三（新戊二醇磷酸酯基）甲胺、硅烷偶联剂KH-550、乙烯基三乙氧基硅烷、六氯环三磷腈；所述的无卤阻燃PA是经过制备基料，制备改性料后将主料和改性料混合后制得。本发明制备得到的PA材料具有优异的耐火性能。