共查询到20条相似文献,搜索用时 125 毫秒
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有机硅改性丙烯酸酯乳液及涂料性能的研究 总被引:11,自引:0,他引:11
本文论述了有机硅-丙烯酸酯共聚乳液和涂料的制备方法,对不同单体组合体系合成的乳液和涂料性能进行了对比,还研究了有机硅功能单体用量对涂料性能的影响。 相似文献
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交联型乳液涂料用固化剂的进展 总被引:2,自引:0,他引:2
回顾了交联型乳液和固化剂的发展过程,阐述了乳液涂料的成膜过程及影响漆膜固化的两个主要因素:扩散速度和交联速度。介绍了氨基树脂、锌和锆、氮丙啶、多碳、二亚胺、环氧基、异丙烯基酯、二丙酮丙烯酰胺、烯胺和胺等固化剂。 相似文献
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乙烯基POSS-丙烯酸酯共聚乳液性能研究 总被引:1,自引:0,他引:1
采用半连续乳液聚合法制备了不同有机硅含量的八乙烯基多面体低聚硅倍半氧烷(OVS)-丙烯酸酯共聚乳液,并用核磁共振分析了其聚合状态。对乳液性能和涂膜性能的测试结果表明:随着多面体低聚倍半氧烷(POSS)含量的增加,涂膜的玻璃化转变温度、拉伸强度和耐水性显著提高,而聚合稳定性和断裂伸长率有所下降。 相似文献
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Stable concentrated emulsions of methyl methacrylate/butyl acrylate were prepared with sodium dodecyl sulfate and cetyl alcohol as the compound surfactant and poly(vinyl alcohol) as the major reinforcer of the liquid film. With a redox system based on benzoyl peroxide/N,N′‐dimethyl phenylamine introduced into the concentrated emulsions, polymer particles with different shapes and sizes were obtained by initiation of the polymerization at low temperatures. We investigated the kinetic behaviors of concentrated emulsion polymerization and drew linear regression diagrams of its time–conversion curves in a constant rate phase (conversions ranged from 20 to 70%), and the experimental results show that the variation of the concentrations of the compound surfactant and initiator, the categories of reinforcers of the liquid film, the temperatures, and so on were responsible for the polymerization stability and the polymerization rate. Finally, the kinetics equation and activation energy of the initiator were obtained. The particle size and distribution of particle diameters of latex particles were determined by photon correlation spectroscopy. The determination results reveal that concentrations of the compound surfactant, polymerization temperatures, and so on affected the shape and size of the polymer particles greatly. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1695–1701, 2005 相似文献
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聚氨酯-丙烯酸酯复合乳液的合成与性能 总被引:15,自引:0,他引:15
采用甲基丙烯酸甲酯(MMA)与水性聚氨酯乳液共聚反应制备聚氨酯-丙烯酸酯(PUA)复合乳液,研究了MMA添加量、引发剂种类和聚合温度对PUA复合乳液及涂膜性能的影响,确定了PUA复合乳液合成的工艺参数。用傅立叶红外光谱(FTIR)测定反应产物的结构。研究发现油溶性引发剂比水溶性引发剂更适合PUA体系的乳液聚合。随着MMA添加量的增大,PUA复合乳液胶粒粒径增大,黏度减小,涂膜光泽度下降,机械性能增强,耐水性增加。 相似文献
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采用丙烯酸丁酯、丙烯酸和苯乙烯等单体进行乳液聚合,制得乳胶漆用苯丙乳液。着重讨论了乳化剂和丙烯酸的用量对涂膜性能的影响,最终确定苯丙乳液的最佳配方。 相似文献
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AN/BA复合乳液聚合方法的研究 总被引:2,自引:0,他引:2
用三种不同的加料方法和两种不同的加料顺序制备了AN/BA复合聚合物乳液。测定了聚合物乳液的流变性,电解质稳定性,乳胶粒子的大小及分布,胶膜的耐水、耐溶剂性。探讨了不同聚合方法乳胶粒子的增长机理及影响乳胶性能的微观因素。 相似文献