可UV固化酮醛预聚物的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF UV CURABLE KETONE-ALDEHYDE PREPOLYMER

作　　者：杨光[1] 曾幸荣[1] 曾理明[1] 周海云 徐迎宾 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州科苑新型材料有限公司,广东广州510560

出　　处：《精细石油化工》2009年第5期11-14,共4页Speciality Petrochemicals

摘　　要：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^1HNMR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。UV curable ketone-aldehyde prepotymer containing terminal methaerylate 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 ~C and catalyst content 0.5% in the first step and the reaction temperature in the second step 60 ~C. FT-IR and ^1H NMR results showed that the terminal methacrylate acyloxy was introduced into the structure of the prepolymer. The solvent resistance of UVCF was significantly improved after UV irradiation.

关 键 词：酮醛树脂 合成 紫外光固化 耐溶剂性能 

分 类 号：TQ630.4[化学工程—精细化工]