作　　者： ; ; ; ; ;

机构地区： 深圳职业技术学院应用化学与生物技术学院

出　　处： 《高分子材料科学与工程》 2013年第4期101-103,108,共4页

摘　　要： 以有机硅改性丙烯酸环氧单酯为树脂配制了一系列紫外光-热混杂固化体系,用红外光谱(FT-IR)表征了固化过程特征吸收峰的变化;测试了有机硅链段的长短对固化膜表面水接触角、表面能和硅元素分布的影响。结果表明,在相同稀释剂条件下,丙烯酸环氧单酯光-热固化膜的表面水接触角为62.53°,表面能为47.62 mN/m,有机硅改性丙烯酸环氧单酯体系光-热固化膜的表面水接触角最高可达106.75°,相应的表面能为18.62 mN/m。有机硅改性体系中随着有机硅链段的增长,固化膜表面水接触角和表面硅元素含量逐渐增加,表面能则逐渐下降,表面元素分析也显示固化膜表面硅元素含量要比背面的高。 A series of UV-heat hybrid curable compositions were prepared using organosilicon modified epoxy monoacrylates （OMEMA） as resins. The change of absorption peaks of double bond and epoxy group were identified by FT-IR spectra during UV-heat curing process. The influence of the length of organosilicon segment on water contact angle, surface tension and surface elements distribution of UV-heat cured films were .investigated. With the same content of.active diluents, the water contact angle and surface tension of the UV-heat cured films of the epoxy monoacrylates （EMA） compositions are 62.53° and 47.62 mN/m respectively, but the maximum water contact angle of the UV-heat cured films of organosilicon modified epoxy monoacrylates compositions is 106.75° and its surface tension is 18.62 mN/m. With increase of the length of organosilicon segment in OMEMA systems, the contact angle and surface Si content of the UV-heat cured films increase, but its surface tension decreases. The analysis of surface elements shows that Si content in the air side of UV-heat cured films is higher than that in the glass side.

关 键 词： 紫外光固化 热固化 有机硅 改性 水接触角

领　　域： [理学] [理学]