2004年--外文翻译--紫外线固化水性丙烯酸酯涂料

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1、中文 6800 字， 4100 单词， 2.2 万英文字符 出处： Decker C, Lorinczova I. UV-Radiation curing of waterborne acrylate coatingsJ. Jct Research, 2004, 1(4):247-256. 外文文献翻译 学 院 专 业 导 师 学 生 学 号 1 UV-Radiation Curing of Waterborne Acrylate Coatings C Decker ， I Lorinczova Abstract A kinetic study of the ultrafast curing

2、of water-based acrylate resins upon UV irradiation was conducted by means of infrared spectroscopy. Under intense illumination, the crosslinking polymerization was found to occur in the driedfilm within less than one second to generate a totally insoluble polymer. The influence of a number of critic

3、al factors on the polymerization rate and cure extent has been investigated, namely the type of photoinitiator, the chemical structure of the acrylate functionalized oligomer, and the sample temperature. Coatings obtained from emulsions undergo a faster and more extensive polymerization than coating

4、s obtained from dispersions, because of a greater molecular mobility in the soft low-modulus polymer formed. Very hard coatings were produced by the UV curing of dispersion-type acrylate resins, especially when the UV irradiation was performed at 80C on the sample emerging from the drying oven. Tg v

5、alues up to 120C were reached when such resins were UV-cured at ambient temperature as 1-mm thick plates, because of the large amount of heat released during such ultrafast polymerization. UV-cured coatings made of aliphatic polyurethane-acrylates proved to be very resistant to accelerated weatherin

6、g in the presence of adequate light stabilizers. Light-induced polymerization of multifunctional monomers or oligomers, also called UV-radiation curing, is one of the most efficient methods to synthetize rapidly highly cross linked polymer networks at ambient temperature. Upon intense illumination, a solvent-free acrylic resin can thus be transformed within afraction of a s