107 紫外線LEDによる樹脂の硬化過程におけるラマン分光法を用いた硬化モニタリング(知的材料・構造システム)

概要

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In the present study, a cure monitoring technique was examined for ultraviolet(UV)-curable polymers cured by using an UV LED apparatus. An UV lamp was also used in the experiments. Raman spectra of the polymers were measured at the radiation power of 64.3mJ/cm^2 by the UV LED and at three kinds of radiation power by the UV lamp. The DOC (Degree Of Cure) was evaluated using the measured spectra. From the results of the measurements, it was found that the Raman spectroscopy adopted in the present study could give the DOC of the UV polymers cured with the UV LED apparatus. In addition, it was shown that the DOC was decided by the total radiation energy not by the radiation intensity. It was also found that the total UV doses needed for complete curing by using the two kinds of UV radiation apparatus were different.
2006-11-25