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含有光稳定剂的紫外光固化光学树脂的光稳定与固化动力学[Macromolecular Research,2007,15(6),560]本文考察了含有不同光稳定剂配比的紫外光固化光学树脂的光稳定与固化动力学以测定体系的最高固化转化率和耐久性。光-DSC分析表明,由于在受到光照时紫外光引发剂和紫外线吸收剂之间的竞争,增加体系中紫外线吸收剂(UVA)的含量同时降低了交联密度和固化速度。而加入受阻胺光稳定剂(HALS)时,由于它在365nm处极低的吸收对于固化速度和转化率的影响都不明显,这一结果也在FTIR-ATR谱和紫外可见光谱上得到了证实。QUV老化试验表明由于二者的协同作用,在UVA/HALS的配比为1∶2时,体系的固化转化率和耐久性最好。
Light Stabilization and Cure Kinetics of Light-Stabilized UV-Cured Optical Resins [Macromolecular Research, 2007, 15 (6), 560] This review examines the photostability and UV- Cure kinetics to determine the highest cure conversion and durability of the system. Optical-DSC analysis shows that increasing the UVA content of the system decreases both the crosslinking density and the curing speed due to competition between the UV initiator and the UV absorber upon exposure to light. However, the addition of hindered amine light stabilizer (HALS) showed no significant effect on the curing rate and conversion due to its very low absorption at 365 nm, which was also confirmed by FTIR-ATR and UV-Vis spectra . QUV aging test showed that the curing conversion and durability of the system were the best when the ratio of UVA / HALS was 1: 2 due to the synergy between the two.