摘要
以丙烯酸松香(β-丙烯酰氧基乙基)酯为主要原料制备紫外光固化涂料,通过全反射红外光谱分析(ATR FT-IR)研究了不同配方涂料紫外光照射后双键的转化率,用铅笔硬度、附着力等表征了固化过程中固化膜的力学性能。结果表明,随固化时间延长,固化膜的铅笔硬度由2H上升至3H至脱落,附着力由1级变化为2级至脱落,光引发剂浓度和紫外光强对固化初期碳碳双键转化率影响较大;当漆膜厚度由75μm变为25μm,采用薄的漆膜厚度或者Irgacure 1173光引发剂,都能加快反应速度;丙烯酸松香(β-丙烯酰氧基乙基)酯能在50 s内实现固化。
The ultraviolet curing coatings based on the acrylic rosin（β-acryloxyl ethyl）ester were prepared by UV light curing process.Conversion of carbon-carbon double bond during the UV curing process was investigated by ATR FT-IR.Mechanical properties of the coatings with different curing level were measured by pencil hardness.The pencil hardness of the cured coating changed from 2H to 3H up to final falling off from the substract with curing time increasing;the adhesion force changed from 1 grade to 2 grade up to final falling off from the substrace with curing time increasing.It is concluded that the initial carbon-carbon double bond conversion was greatly affected by the dosage of initiator and the intensity of UV light;adopting thinner coating（from 75μm to 25μm） or using Irgacure 1173 as initiator would accelerate the rate of the curing reaction;acrylic rosin（β-acryloxyl ethyl）ester could be cured in 50 seconds.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2011年第5期76-80,共5页
Chemistry and Industry of Forest Products
基金
林业公益性行业科研专项项目(200804011)
江苏省自然科学基金资助项目(BK2009055)
