Study on the UV curing behavior of tung oil: Mechanism, curing activity and film-forming property
Study on the UV curing behavior of tung oil: Mechanism, curing activity and film-forming property
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桐油UV固化行为的研究：机理、固化活性及成膜性能
DOI：
10.1016/j.indcrop.2017.10.061
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发表时间：
2018-02-01
影响因子：
5.9
通讯作者：
Yang, Zhuohong
中科院分区：
文献类型：
--
作者：
Huang, Jiajian;Yuan, Teng;Yang, Zhuohong
随着工业的快速发展和化石能源的日益短缺，桐油因其环境友好和可再生的优势而备受研究者的关注。本文采用过氧化值滴定法、傅立叶变换红外光谱法和核磁共振光谱法研究了紫外光照射下桐油的固化机理。此外，通过对固化膜凝胶分数的测定，研究了不同光引发剂对桐油紫外光固化行为的影响。最后，通过扫描电镜和耐溶剂性测试，对不同条件下固化膜的形貌和耐溶剂性进行了评价。结果表明，桐油的紫外光固化反应是由氧化聚合和自由基聚合组成的。在不同的光引发剂中，三芳基硫鎓盐在5wt%的用量下是最有效的UV固化桐油的光引发剂之一。构建了一种新型的桐油紫外光固化体系，为进一步扩大干性油的应用提供了参考。
With the rapid development of industry and the growing shortage of fossil energy, tung oil has attracted much attention of researchers because of its environment-friendly and renewable advantages. In this work, the curing mechanism of tung oil under UV irradiation is studied by the titration of the peroxide value, Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. In addition, the effects of different photoinitiators on the UV curing behavior of tung oil are investigated through monitoring the gel fraction of the cured films. Finally, the morphology and the solvent resistance of the films cured with different condition are estimated by scanning electron microscope and solvent resistance testing. The results display that UV curing of tung oil is composed of oxidative polymerization and free radical polymerization. Among the different photo initiators, the triarylsulfonium salts at amount of 5 wt% is one of the most efficient ones for the UV curing of tung oil. A novel UV curable system containing tung oil is constructed to supply a reference to expand the application of drying oils.