摘要
以丙烯酸-β-羟丙酯(HPA)为羟基单体,采用种子乳液聚合工艺合成了羟值为99.0mg KOH/g的聚丙烯酸酯乳液,配制水性双组份聚氨酯丙烯酸酯涂料(2K-WPU)。比较了常规乳化剂和可聚合型乳化剂对聚丙烯酸酯乳液性能的影响。研究发现:采用可聚合型乳化剂制备的聚丙烯酸酯乳液对固化剂和成膜助剂的容忍度高,其配制的水性双组份涂料的涂膜外观好、光泽高、涂层致密无表面缺陷,具有优异的耐化学品性能。涂膜TGA分析表明采用可聚合乳化剂体系制备的2K-WPU涂膜具有较高的热稳定性。
Hydroxyl polyacrylate emulsions（ HPAE） with 99. 0mg KOH / g of hydroxyl value for two component waterborne polyurethane coatings（ 2K-WPU） were synthesized by seeded emulsion polymerization with β-hydroxypropyl acrylate（ HPA） as a hydroxy monomer. The effects of polymerizable emulsifiers and conventional emulsifier on the properties of latexes and 2K-WPU film performances were compared. It was found that the HPAE with polymerizable emulsifiers display higher torrent to the harders and co-solvent than those of conventional emulsifier,therefore its 2K-WPU film possess excellent appearance,high gross,good compact and flat,and also exhibit excellent chemical-resistance properties. TGA curves indicated the thermal stability of 2K-WPU film with polymerizable emulsifier systems was better than that of conventional emulsifier system.
出处
《合成材料老化与应用》
2016年第3期1-5,共5页
Synthetic Materials Aging and Application
基金
广东省省部产学研结合重大专项项目(2012A090300004)
