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作 者:浦建光[1] 高延敏[1] 袁清峰[1] 周宏建[1] 汪长勤[2]
机构地区:[1]江苏科技大学材料科学与工程学院,江苏镇江212003 [2]江苏大学材料科学与工程学院,江苏镇江212013
出 处:《电镀与涂饰》2009年第3期56-58,共3页Electroplating & Finishing
摘 要:采用一种有机环保型缓蚀剂鞣酸来改性UV固化涂料,介绍了其基本组成及配制过程。讨论了鞣酸用量、改性方法(冷拼、预聚)对涂料性能的影响。利用电化学阻抗谱研究了2种不同改性方法所得涂层的防腐性能。结果表明,该涂料可用于金属表面涂覆。当m(EA)∶m(PUA)=7∶3,m(PO3-TMPTA)∶m(TPGDA)∶m(HDDA)∶m(PO2-NPGDA)∶m(HEMA)∶m(助剂)∶m(引发剂)=6∶10∶13∶18∶8∶3∶6,m(低聚物)∶m(活性稀释剂)=6∶5,鞣酸用量在2.0%左右时,采用预聚方法获得的涂层其综合性能优良,防腐效果最好。Tannic acid, an environmentally-friendly organic corrosion inhibitor, was used to modify UV-curable coating. The composition and preparation process of the coating were introduced. The effects of tannic acid dosage and modification methods (including pre-polymerization and blending) on the coating performance were discussed. The corrosion resistance of the coatings modified by different methods was studied by electrochemical impedance spectroscopy. The results showed that the coating can be used to paint metal surface. The coating modified by pre-polymerization has excellent comprehensive performance and good corrosion resistance under the following conditions: m (EA) : m (PUA) = 7:3, m (PO3-TMPTA) : m (TPGDA) : m (HDDA) : m (PO2- NPGDA) : m (HEMA) : m (initiator) : m (initiator) = 6:10:13:18: 8:3:6, m (oligomers) : m (active solvents) = 6:5, tannic acid dosage 2.0%.
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