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化工学报  2013 

甲基丙烯酸羟乙酯改性水性聚氨酯的合成与应用

DOI: 10.3969/j.issn.0438-1157.2013.06.047, PP. 2257-2263

Keywords: 甲基丙烯酸羟乙酯,改性,水性聚氨酯,耐热性,碳纤维上胶剂

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Abstract:

以甲苯二异氰酸酯(TDI)和聚乙二醇(PEG)为原料,选用2,2-二羟甲基丁酸(DMBA)为扩链剂合成水性聚氨酯(WPU),通过甲基丙烯酸羟乙酯(HEMA)对水性聚氨酯进行封端,采用自乳化法,制备了HEMA改性水性聚氨酯乳液(HEMA-WPU)。通过红外、核磁和热重法(TG)分别表征了WPU和HEMA-WPU的分子结构及其热分解行为。结果表明,与WPU相比,HEMA-WPU的耐热性能明显提高,用该乳液上胶处理后的碳纤维/环氧树脂复合材料的层间剪切强度(ILSS)与未上胶的样品相比提高了7.5%,达到64.5MPa。

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