单体种类及光引发剂添加量对环氧压克力紫外线硬化型涂料性质之.PDF

29(2) 77-88, 2007 77 林業研究季刊 ： 研究報告 單體種類及光引發劑添加量對環氧壓克力紫外線 硬化型塗料性質之影響1 2 2 盧崑宗 張家偉 (UV) 【摘要】本研究係探討單體種類及光引發劑添加量，對以環氧壓克力樹脂為基質紫外線硬化型 UV 塗料性質之影響； 塗料由環氧壓克力樹脂寡聚合體、單體及光引發劑所組成，係將環氧壓克力 80/20 ( ) 1 2 3 5% 樹脂∕單體＝ 重量比 ，光引發劑添加量分別為全樹脂重之 、 、 及 ，調配成各種自 由基硬化型UV 塗料。其中，單體的種類包括單官能性之甲基丙烯酸甲酯 (MMA) 、雙官能性之二 1,6- (HDDA) (TPGDA) ( 丙烯酸 己二醇酯 與二丙烯酸三丙二醇酯 及三官能性之三甲醇基 三甲醇基 ) (TMPTA) (PETA) 5 丙烷三丙烯酸酯 丙烷三丙烯酸酯 與三丙烯酸異戊四醇酯 等 種壓克力系單體， 光引發劑則採用光裂解型之Benzil dimethyl ketal (Irgacure 651) 。試驗結果發現，各種配方之UV TPGDA 3% 塗料以含雙官能性 單體及 光引發劑添加量者，可獲得最為均衡之塗料與塗膜性質，但 塗膜附著性仍待進一步改善，才適合用於木材塗裝。 【關鍵詞】紫外線硬化型塗料、環氧壓克力樹脂、單體、光引發劑 Research paper Effects of Monomers and Dosages of Photoinitiator on the Properties of Epoxy Acrylate UV-curing Coatings1 Kun-Tsung Lu2 Chia-Wei Chang2 Abstract The objectives of this study were to investigate the effect of monomers and dosages of 【 】 photoinitiator on the properties of UV-curing coatings which prepared from epoxy acrylate resin oligomer, monomer and photoinitiator. The formulation of each free radical polymerization UV-curing coating was epoxy acrylate resin /monomer by the weight ratio of 80/20, and the dosage of photoinitiator based on the weight of total resins including 1, 2, 3, and 5% was added, respectively. Five kinds of acrylate monomers such as mono-functionality (methyl methacrylate, MMA), di-functionality (1,6- hexanediol diacrylate, HDDA; tr