共查询到19条相似文献,搜索用时 93 毫秒
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超支化聚酯树脂在涂料中的应用 总被引:2,自引:1,他引:2
超支化聚合物具有高度支化的分子结构,及大量官能端基,在合成工艺上易于工业化生产。简介了超支化聚酯的特性,及其在高固低黏涂料、UV固化和粉末涂料中的应用。 相似文献
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UV固化水性木器涂料的性能及影响因素 总被引:3,自引:2,他引:1
介绍了UV固化水性木器涂料与传统UV固化涂料、水性木器涂料的比较优势,侧重讨论了影响聚氨酯-丙烯酸酯水分散体UV固化动力学的影响因素,从而导出提高其UV固化速度与反应程度的可行方法,以及优于传统UV固化涂料的性能。 相似文献
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新型UV固化粉末涂料的研制 总被引:7,自引:0,他引:7
合成了无定型、半晶型两种不同结构的不饱和聚酯树脂,由此配制成可紫外光固化的双组分粉末涂料。研究了聚酯树脂结构及树脂配比对涂料固化速度及涂膜附着力、抗冲击、硬度和光泽等性能的影响。结果表明,涂料配方中加入半晶型不饱和聚酯树脂,涂膜的抗冲性能和附着力明显提高,固化后的涂膜综合性能良好。 相似文献
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A novel approach toward the preparation of newly UV-curable polyurethane coatings composed of multifunctional thiol- and ene-terminated polyurethane aqueous dispersions is presented. By a synergistic combination of polyurethane dispersions synthesis and thiol-ene chemistry, strategies for the preparation of newly UV-curable polyurethane coatings are developed. Photo-DSC, real-time FTIR, DMA and tensile tests measurements are used to investigate the photopolymerization and mechanical behaviors of newly UV-curable polyurethane coatings. The newly polyurethane coatings have 1.5 times higher polymerization rate and final 99% functional groups conversion in air conditions compared to current urethane-acrylate based UV-curable polyurethane dispersions coatings. UV-cured polyurethane films prepared by this method are also found to exhibit increase in Young's modulus and tensile strength at break by 25% and 10%, respectively. These experiment facts suggest that the incorporation of thiol-ene chemistry to the polyurethane dispersion coatings increase their polymerization rate, producing a high degree of cross-linking. This confirms the preparation of the targeted novel UV-curable polyurethane coatings and reveals the dramatic effect that changes in incorporation of thiol-ene chemistry can have on the photopolymerization behaviors of UV-curable polyurethane dispersions coatings systems. 相似文献
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为了提高光固化涂料的耐腐蚀性,将不同质量分数的石墨烯添加到光固化涂料中,制备了石墨烯复合光固化防腐涂层。对不同含量石墨烯复合光固化防腐涂层的硬度、耐冲击性、附着力等物理性能进行测试,并通过极化曲线、电化学阻抗谱等对其电化学性能进行了研究。最后,采用盐雾试验对不同石墨烯添加量的光固化涂层的防腐性能进行了评价。结果表明:当石墨烯的添加量为 0.1%时,涂层的硬度、耐冲击性以及附着力等物理性能得到显著增强,此时涂层的腐蚀电位最高,腐蚀电流密度最低,具有优异的耐腐蚀性能。 相似文献