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中文摘要：
利用红外光谱分析技术，测定了紫外光固化体系中CC双键在1 648～1 589 cm-1 特征吸收峰面积，以此研究紫外光辐照后暗反应过程中的CC双键转化率。系统地考察了光引发剂、活性稀释剂和光敏树脂等对紫外光固化暗反应的影响。研究结果表明：在45 s的紫外光辐照后，体系中40%～85%的CC双键转化是在暗反应过程中完成的，暗反应在1.75 h以后趋于平缓，但要达到95%的CC双键转化率则需要24 h以上。体系中CC双键的转化速率和最终转化率受光引发剂的种类和用量、氧阻效应以及活性稀释剂的官能度影响较大，而光敏树脂的种类及其官能度只影响转化速率，但对最终转化率影响不大。
英文摘要：
Infrared spectroscopy was used to determine 1 648-1 589 cm 1 characteristic absorption peak area so as to study the conversation of acrylic C=C double bonds after UV curing. The effects of phototinitiators, active diluents and UV curing resins on the conversion of C=C double bonds were also investigated. The results showed that 40%-85% of C=C double bonds were conversed during dark reaction after 45 s UV curing. Dark reaction will be changed gently after 1.75 h, but 95% conversion of C=C double bonds needed more than 24 h. The rates of polymerization and conversation were affected by photoinitiators, the concentration of photoinitiator, oxygen inhibition, and C=C functional groups of active diluents. The rate of polymerization was affected by the C=C functional groups and types of UV curing resins, but conversation was not.
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