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Studies on acrylate copolymer soap-free waterborne coatings crosslinked by metal ions

机译:金属离子交联的丙烯酸酯共聚物无皂水性涂料的研究

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摘要

Acrylate copolymers containing hydrophobic monomers (methyl methacrylate, butyl acrylate, styrene, or divinyl benzene) and hydrophilic monomer (acrylic acid) were synthesized by solution polymerization, and neutralized to form the soap-free hydrosol. The waterborne coating was prepared from the hydrosol crosslinked by M(NH_3)(_4)~(2+) (M~(2+) was Zn~(2+), Cu~(2+), Ni~(2+) or Co~(2+)). ~(13)C-NMR analysis was used to identify the copolymer. The result of GPC showed that the molecular weight of the copolymer was within the range of thermosetting resin for coating. The factors affecting the crosslinking degree of the coating films were studied by DSC and gravimetric analysis. The results indicated that the appropriate crosslinking agent was Zn(NH_3)(_4)~(2+), and the optimum curing condition was heating at 80 °C for 30 min.
机译:通过溶液聚合合成包含疏水性单体(甲基丙烯酸甲酯,丙烯酸丁酯,苯乙烯或二乙烯基苯)和亲水性单体(丙烯酸)的丙烯酸酯共聚物,并中和形成无皂水溶胶。由与M(NH_3)(_ 4)〜(2+)(M〜(2+)为Zn〜(2 +),Cu〜(2 +),Ni〜(2+)交联的水溶胶制备水性涂料或Co〜(2+))。用〜(13)C-NMR分析鉴定共聚物。 GPC的结果表明,该共聚物的分子量在用于涂布的热固性树脂的范围内。通过DSC和重量分析法研究了影响涂膜交联度的因素。结果表明,合适的交联剂为Zn(NH_3)(_ 4)〜(2+),最佳固化条件为在80℃加热30min。

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