CAJ | 학술논문

实验以异佛尔酮二异氰酸酯、甲基丙烯酸羟乙酯改性环己酮-甲醛树脂,以两步法制备了含端甲基丙烯酰氧基的可UV固化酮醛预聚物(UVCF),适宜的反应条件为:第一步反应温度70℃,催化剂用量0.5%,第二步反应温度60℃.FT-IR及~1H NMR结果表明预聚物结构中含有可UV固化的甲基丙烯酰氧基,经UV辐照后固化膜的耐溶剂性能可显著提高.
실험이이불이동이이청산지、갑기병희산간을지개성배기동-갑철수지,이량보법제비료함단갑기병희선양기적가UV고화동철예취물(UVCF),괄의적반응조건위:제일보반응온도70℃,최화제용량0.5%,제이보반응온도60℃.FT-IR급~1H NMR결과표명예취물결구중함유가UV고화적갑기병희선양기,경UV복조후고화막적내용제성능가현저제고.
UV curable ketone-aldehyde prepolymer containing terminal methacrylate acyloxy was prepared using isophorone diisocyanate and 2-hdroxylethyl methacrylate to modify cyclohexanone-formaldehyde resin by two steps.Effects of reaction temperature and the catalyst(dibutyltin dilaurate)content on the reaction were investigated.The prepolymer was characterized by FT-IR and ~1H-NMR.The optimum reaction condition was found as follows:reaction temperature 70℃ and catalyst content 0.5% in the first step and the reaction temperature in the second step 60℃.FT-IR and ~1H NMR results showed that the terminal methacrylate acyloxy was introduced into the structure of the prepolymar.The solvent resistance of UVCF was significantly improved after UV irradiation.