[雙語翻譯]--外文翻譯--紫外線固化水性丙烯酸酯涂料

1、中文 中文 6800 字， 字，4100 單詞， 單詞，2.2 萬英文字符 萬英文字符出處： 出處：Decker C, Lorinczova I. UV-Radiation curing of waterborne acrylate coatings[J]. Jct Research, 2004, 1(4):247-256.外文文獻(xiàn)翻譯學(xué) 院 專 業(yè) 導(dǎo) 師

2、 學(xué) 生 學(xué) 號 2based UV-cured coatings have been shown to combine the flexible properties of high molecular weight polymers with the hardness of cross linked acrylate po

3、lymers. The potential of water- based resins and their performance in UV-radiation curing has already been investigated. They proved particularly well suited to be used as screen inks and protective coatings for plastic

4、s, paper, and wood. We report here a new study on the high speed UV-curing of some commercial water-based acrylate coatings, by focusing on the influence of the photo initiator and the functionalized oligomer on the pol

5、ymerization kinetics, namely cure speed and cure extent. The effect of the kind of water-based resin used (dispersion or emulsion) on the visco elastic properties of the UV-cured polymer will also be investigated, as we

6、ll as the correlation existing between the degree of conversion and the polymer properties, in particular its hardness.EXPERIMENTALMaterialsThe UV-curable waterborne formulations used in this study consisted of aqueous

7、emulsions or dispersions of acrylate functionalized oligomers containing a water soluble or water dispersible radical-type photo initiator. The compatibility of the initiator with the aqueous formulation and with the dri

8、ed coating is essential to achieve its uniform distribution in the sample. Two types of photo cleavable photo initiators were used in this study:(1) Oil-soluble photoinitiators which are partly soluble in water: Darocur

9、 1173 and Irgacure 2959 from Ciba Specialty Chemicals, and Lucirin TPO-L from BASF;（2） Oil-soluble photoinitiators which were dispersed in water: Irgacure 819 DW from Ciba Specialty Chemicals, and Esacure KIP/EM from

10、 Fratelli-LambertiThe chemical formulas of these photo initiators are given in Figure . They consist either of hydroxyl phenyl ketones or of acylphosphine oxides, which generate upon UV-exposure benzoyl radicals and eith

11、er alkyl radicals or phosphinoyl radicals,.RespectivelyThe waterborne resin was made of a short acrylate endcapped polymer chain containing either a few carboxylate groups to be dispersible in water or an added emulsifi

12、er. The characteristics of the five acrylate oligomers tested, all from BASF, and their acrylate content are given below.The water content was 50 wt% for the emulsions and60 wt% for the dispersions.Drying and UV CuringT

13、he formulation containing typically 1 wt% of photoinitiator was cast onto a barium fluoride crystal or a glass plate to obtain, after drying at 80°C, a 20-μm thickcoating. The sample was cured on a UV line (IST Min

14、icure, 80 W/cm) at a speed ranging between 5 and 60 m/min, at an incident light intensity of 500 mW cm. The UV dose received by the sample at each pass was measured by radiometry (International Light IL-390 radiometer)