氮基三亚甲基磷酸锆的制备及其复合阻燃EVA的研究

发布时间：2018-06-23 17:35

本文选题：EVA + Zr-ATMP　；参考：《南京理工大学》2017年硕士论文

【摘要】：乙烯-醋酸乙烯酯共聚物(EVA)是一类重要的通用塑料,在发泡材料、薄膜、电缆、汽车工业、热熔胶等工业领域有着广泛的应用。但EVA的易燃性使其应用受到了限制,因而研发高效、环保并能保证实际使用价值的阻燃体系EVA是刻不容缓的。本文以具备有机骨架、含磷量高的氮基三亚甲基磷酸(又称氨基三亚甲基磷酸(ATMP)与八水合氧氯化锆为原料,通过溶液沉淀法制备氮基三亚甲基磷酸锆(Zr-ATMP),并通过熔融共混的方式将其填充到EVA基体中制备了复合材料,分析了复合材料的阻燃性能、力学性能、热性能、残炭结构,并描述了阻燃机理。本文研究结果表明,制备的Zr-ATMP用于复合体系中能够发挥协同阻燃作用,在EVA/氢氧化铝/RDP/Zr-ATMP复合材料中,添加5wt%Zr-ATMP后材料氧指数上升到27.5%,水平燃烧速率降低到13mm/min。在EVA/淀粉/APP和EVA/酒糟/MPP膨胀阻燃复合材料中,填充少量的Zr-ATMP作为协效剂时,垂直燃烧都能够实现V-0级,氧指数最高分别达到了 31.0%和30.5%。以Zr-ATMP作为膨胀阻燃剂酸源构建EVA/酒糟/MCA/Zr-ATMP复合材料时,当酒糟、MCA、Zr-ATMP添加量分别为10wt%、10wt%和20wt%时阻燃性能最好,氧指数达到26.0%,垂直燃烧实现V-0级。残炭分析结果表明,Zr-ATMP在催化成炭、改善炭层结构方面作用明显。同时,适量加入Zr-ATMP对材料的力学性能、热稳定性等方面都有显著的提升。
[Abstract]:Ethylene-vinyl acetate copolymer (EVA) is an important kind of general plastics, which is widely used in foaming materials, film, cable, automobile industry, hot melt adhesive and so on. However, the flammability of EVA limits its application, so it is urgent to develop a flame retardant system EVA with high efficiency, environmental protection and practical value. In this paper, amino trimethylene-phosphoric acid (ATMP) and zirconium oxychloride octahydrate were used as raw materials. Zirconium trimethylene phosphate (Zr-ATMP) was prepared by solution precipitation method. The composites were filled in EVA matrix by melt blending. The flame retardant properties, mechanical properties, thermal properties and residual carbon structure of the composites were analyzed. The flame retardant mechanism was described. The results show that the prepared Zr-ATMP can play a synergistic flame-retardant effect in the composite system. In EVA / Al _ 2O _ 3 / RDP / Zr-ATMP composites, the oxygen index increases to 27.5mm / min and the horizontal combustion rate decreases to 13mm / min after the addition of Zr-ATMP. In EVA / starch / app and EVA / distiller's grains / MPP / intumescent flame retardant composites, when a small amount of Zr-ATMP was filled as synergistic agent, V-0 level could be achieved by vertical combustion, and the highest oxygen index reached 31.0% and 30.5%, respectively. When Zr-ATMP was used as an intumescent flame retardant to construct EVA / distiller's grains / MCA / Zr-ATMP composites, the flame retardancy of EVA / distiller's grains / MCA-Zr-ATMP composites was the best when the content of MCA-ATMP was 10wt% and 20wt%, respectively. The oxygen index reached 26.0wt%, and V-0 grade was achieved by vertical combustion. The results of carbon residue analysis show that Zr-ATMP plays an important role in the catalytic formation of carbon and the improvement of carbon layer structure. At the same time, the addition of Zr-ATMP can improve the mechanical properties and thermal stability of the material.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ325.12

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