新型多烯型紫外光固化水性聚氨酯的研制及应用
首发时间:2010-11-29
摘要:UV固化水性聚氨酯结合了UV固化的优点和水性聚氨酯的优点,未来有很好的发展前景。本文用季戊四醇与丙烯酸直接酯化制备季戊四醇二丙烯酸酯单体,研究了二者不同摩尔比对物质结构的影响,得到了最佳配比;通过FTIR和1HNMR谱证实了产物的结构。将季戊四醇二丙烯酸酯作为扩链剂,在聚氨酯分子的侧基引入双键,制得高性能UV固化水性聚氨酯树脂。讨论了不同摩尔比的季戊四醇和甲基丙烯酸羟乙酯对树脂中双键含量、树脂分子量及对涂膜性能的影响。对研制的UV固化水性聚氨酯涂料进行了性能测试。
关键词: UV固化 水性聚氨酯丙烯酸酯预聚物 高性能
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Development &Application of New Multi-propenyl Bond UV Curing Water-borne Polyurethane Coating
Abstract:The UV curing water-borne polyurethane will have a good development prospect in future because it combines the advantages of UV curing and waterborne polyurethane. In this paper pentaerythritol diacrylate was prepared by esterificate directly with pentaerythritol and acrylic.The influence to the structure of the product with the different mole ratio between pentaerythritol and acrylic was researched, and a best formula was gained ,and the structure of the product was analyzed with FTIR and 1HNMR spectrum.Pentaerythritol diacrylate was taken as chain extender agent, and the pendant chain of polyurethane was embed double bonds,and high performance UV curing water-borne polyurethane resin was prepared. The influence to the double bond content and the molecular weight of the resins by different mole ratio between pentaerythritol and 2-Hydroxyethyl methacrylate was discussed. The basic performance of UV curing water-borne polyurethane coating was tested.
Keywords: UV curing water-borne polyurethane acrylates prepolymer high performance
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