从氧的光化学能态方面分析了紫外光固化涂料的氧阻聚机理,详细讨论了抑制紫外光固化涂料氧阻聚的方法,包括开发阳离子聚合机理的反应体系,提高引发剂浓度或增加辐射剂量,使用对氧敏感度低的预聚物和单体,在光固化体系中加入氧清除剂,以及采用惰性气体保护法、石蜡保护法,覆膜法、强光辐照法和分步照射法等光固化工艺.
The mechanism of oxygen inhibition for UV-curable coatings was analyzed based on photochemical energy state of oxygen, and some methods for suppressing oxygen inhibition of UV-curable coatings were discussed in detail, including developing a reaction system of cationic polymerization mechanism, increasing initiator concentration or radiation dose, using prepolymers and monomers with low oxygen sensitivity, adding oxygen remover to UV-curing system and applying photocuring processes with inert gases protection, olefm protection, film protection, strong illumination or stepwise radiation.
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