Abstract:

A series of UV curable acrylate resins(UV-WZF) has been prepared by the addition of methyl methacrylate(MMA), butyl acrylate(n-BA), tri(propylene glycol) diacrylate(TPGDA), 3-glycidoxypropyltrimethoxysilane(KH570), 1-dodecanethiol(NDM) as a chain transfer agent, 2,2'-azobis(2-methylpropionitrile) as an initiator. The structure and property of the UV-WZF oligomer was characterized using infrared spectroscopy (FT-IR), DSC and TG. In addition, the effects of KH-570 and TPGDA dosage on the adhesion and curing rate of the film are investigated. The results shown that the adhesion is optimal when the KH-570 dosage is 6% and the curing time is the shortest when the TPGDA dosage is 26%. The UV-curing kinetics of the UV-WZF oligomer are also investigated by real time FT-IR.When the amount of photoinitiator Darocur1173 is 5%, the UV-curing rate of the UV-WZF oligomer is optimal. The increased light intensity of the radiation can improve the UV-curing rate of the system.

Key words: UV-curable, organic silicon modified, acrylate resin

摘要：

以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(n-BA)、二缩三丙二醇二丙烯酸酯(TPGDA)、γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH-570)为单体,正十二烷基硫醇(NDM)为链转移剂,偶氮二异丁腈(AIBN)为引发剂,合成了一种可紫外光固化的丙烯酸酯树脂(UV-WZF)。通过FT-IR、DSC、TGA对其结构和性能进行了研究。讨论了KH-570的含量和TPGDA的含量对光固化膜的附着力、光固化速率的影响。结果表明:当硅烷偶联剂KH-570的用量为6%时,涂膜附着力良好;当TPGDA的用量为26%时,固化漆膜的光固化时间最短。采用实时红外光谱原位跟踪监测了该树脂的光固化动力学行为,结果表明:当光引发剂Darocur1173含量为树脂质量的5%时,体系的光固化速率最优,增大光强利于光固化。

关键词: 光固化, 有机硅改性, 丙烯酸酯树脂

CLC Number: 

• TQ637.83