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化工学报  2015 

常温酮肼自交联纳米环氧树脂乳液的制备与表征

DOI: 10.11949/j.issn.0438-1157.20141851, PP. 2321-2328

Keywords: 酮肼自交联,丙烯酸改性,纳米粒子,乳液,粒度分布

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Abstract:

以环氧树脂E-20合成了环氧月桂酸酯,以丙烯酸单体与双丙酮丙烯酰胺(DAAM)对其进行接枝改性,添加己二酸二酰肼(ADH)制备了常温酮肼自交联纳米环氧树脂乳液。以红外光谱仪表征了合成过程中各步产物及乳液固化后的结构,结果表明得到了设计结构的树脂,干燥后涂膜的FTIR谱图表明酮羰基与酰肼基发生交联反应生成了腙;DSC分析表明合成的树脂具有两个玻璃化温度(Tg),分别为丙烯酸接枝环氧树脂和纯丙烯酸树脂的Tg,前者低于常温,表明可以实现常温自交联。在改性环氧树脂乳液的合成过程中,以粒径分析和综合性能分析对功能性单体配比进行了研究,结果发现当MAA与E-20质量比为11.0%~14.7%、DAAM的用量为2%~3%、m(ADH)/m(DAAM)为0.8~1.0时,制得的乳液具有良好的储存稳定性和涂膜性能。透射电镜及粒径测试表明乳液粒径为纳米级,约88nm,且粒径分布均匀,基本呈稳定的球形结构。将所制备的纳米乳液配制成防腐涂料,性能测试表明该涂料具有良好的综合性能。

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