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以高活性聚醚三元醇、液化MDI、乙二醇等为主要原料,微米级Al(OH)3为填料,二月桂酸二丁基锡、三乙烯二胺为催化剂,采用一步法制备聚氨酯弹性体/Al(OH)3复合材料,考查了Al(OH)3含量对复合材料成型工艺、性能及微观结构的影响。结果表明:Al(OH)3对聚合反应有延迟作用并可作为聚氨酯弹性体的增强填料;氧指数表明,复合材料的阻燃性能随Al(OH)3含量的增加而提高,可达到难燃级别。XRD图和SEM照片表明微米级Al(OH)3在PUE基体中分散良好。
Polyurethane elastomer was prepared by one-step method using high activity polyether triol, liquefied MDI and ethylene glycol as main raw materials, micron Al (OH) 3 as filler, dibutyltin dilaurate and triethylenediamine as catalyst / Al (OH) 3 composites. The effects of Al (OH) 3 content on the molding process, properties and microstructure of the composites were investigated. The results showed that Al (OH) 3 had a retarding effect on the polymerization reaction and could be used as a reinforcing filler for polyurethane elastomer. The oxygen index indicated that the flame retardancy of the composite increased with the increase of Al (OH) 3 content, level. The XRD patterns and SEM images show that micron Al (OH) 3 disperses well in PUE matrix.