Synthesis of Zinc Stannate Microcapsules for Preparation of Flame-Retardant PVC Composites

Q2 Materials Science Polymer-Plastics Technology and Engineering Pub Date : 2018-08-13 DOI:10.1080/03602559.2017.1381239

Bin Zhang, Yujie Jiang, Jian Han

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引用次数: 7

Abstract

ABSTRACT A multilayer microcapsule [melamine-formaldehyde resin/aluminum hydroxide/zinc stannate] with unique core–shell structure was prepared. Fourier transform infrared, X-ray photoelectron spectroscopy, thermogravimetric analysis, and transmission electron microscope were used to investigate the chemical structure of the microcapsules, fire retardancy, and thermal stability of polyvinyl chloride with these materials as additives were also investigated. Remarkably, addition of certain amount of melamine-formaldehyde/aluminum hydroxide/zinc stannate microcapsules could evidently increase limiting oxygen index values. The smoke density results showed that polyvinyl chloride containing melamine-formaldehyde/aluminum hydroxide/zinc stannate microcapsules produced less smoke than pure polyvinyl chloride. The morphologies of the residues were revealed by scanning electron microscope, ascertained that the formed char layers on the composites were denser than that of the pure polyvinyl chloride and polyvinyl chloride/aluminum hydroxide/zinc stannate microcapsule composites. Furthermore, the mechanical properties of polyvinyl chloride/melamine-formaldehyde/aluminum hydroxide/zinc stannate microcapsule composites were observably improved, highlighting its promising potential in industrial applications. GRAPHICAL ABSTRACT

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制备阻燃PVC复合材料用锡酸锌微胶囊的合成

摘要制备了具有独特核壳结构的多层微胶囊[三聚氰胺甲醛树脂/氢氧化铝/锡酸锌]。采用傅里叶变换红外光谱、x射线光电子能谱、热重分析和透射电子显微镜对微胶囊的化学结构进行了研究，并对这些材料作为添加剂的聚氯乙烯的阻燃性和热稳定性进行了研究。添加一定量的三聚氰胺甲醛/氢氧化铝/锡酸锌微胶囊可显著提高极限氧指数。烟雾密度测试结果表明，含三聚氰胺甲醛/氢氧化铝/锡酸锌微胶囊的聚氯乙烯比纯聚氯乙烯产生的烟雾少。通过扫描电镜观察残渣的形貌，确定复合材料上形成的炭层比纯聚氯乙烯和聚氯乙烯/氢氧化铝/锡酸锌微胶囊复合材料致密。此外，聚氯乙烯/三聚氰胺甲醛/氢氧化铝/锡酸锌微胶囊复合材料的力学性能得到了明显改善，显示了其在工业应用中的广阔前景。图形抽象

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