Abstract Since UV curing coatings form a coating film with low adhesive property, it is difficult to use it as a coating for pre-coated metal (PCM) of post-processing method which has been actively studied recently. In this study, to apply UV-curing type coatings to pre-coated metal (PCM), which is applied as a method to improve productivity and to shorten the coating process, urethane acrylate oligomers were synthesized by using the content of polycaprolactone diol and hydrogenated polybutadiene glycol as a soft segment. UV-curable polyurethane acrylate coatings were prepared by varying the kind and content of the reactive diluent (IBOA, TMPEOTA). The urethane-acrylate oligomer and the coatings were well-prepared and confirmed using FT-IR. The storage modulus at RT, tensile strength and modulus were the highest values and the elongation at break was low. Also, as TMPEOTA content increased, the Tg of hard segment and storage modulus at RT, tensile strength and modulus increased, but elongation at break decreased. The surface free energy of all coating films was lower than that of metal plate. And the adhesive property of coatings using HPBD polyol of 30 and 50 mole% was the best and pencil hardness was also high in these coatings. MEK rubbing was increased with the increase of HPBD polyol and TMPEOTA content.

中文翻译：

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预涂金属（PCM）UV固化聚氨酯丙烯酸酯涂料的制备及性能：多元醇类型/含量对粘合性能的影响

摘要 由于UV固化涂料形成的涂膜具有低附着性，因此难以将其用作后处理方法的预涂金属（PCM）的涂料，这是最近积极研究的。在这项研究中，为了将 UV 固化型涂料应用于预涂金属 (PCM)，作为一种提高生产率和缩短涂层过程的方法，通过使用聚己内酯二醇和氢化物的含量合成了聚氨酯丙烯酸酯低聚物。聚丁二烯二醇作为软链段。通过改变活性稀释剂（IBOA、TMPEOTA）的种类和含量来制备紫外线固化聚氨酯丙烯酸酯涂料。氨基甲酸酯-丙烯酸酯低聚物和涂层经过充分制备并使用 FT-IR 进行了确认。室温下的储能模量，拉伸强度和模量是最高值，断裂伸长率低。此外，随着 TMPEOTA 含量的增加，硬链段的 Tg 和室温储能模量、拉伸强度和模量增加，但断裂伸长率降低。所有涂膜的表面自由能均低于金属板。并且使用30和50摩尔％的HPBD多元醇的涂料的粘合性能最好，这些涂料的铅笔硬度也很高。MEK摩擦随着HPBD多元醇和TMPEOTA含量的增加而增加。并且使用30和50摩尔％的HPBD多元醇的涂料的粘合性能最好，这些涂料的铅笔硬度也很高。MEK摩擦随着HPBD多元醇和TMPEOTA含量的增加而增加。并且使用30和50摩尔％的HPBD多元醇的涂料的粘合性能最好，这些涂料的铅笔硬度也很高。MEK摩擦随着HPBD多元醇和TMPEOTA含量的增加而增加。