화학공학소재연구정보센터
Journal of Applied Polymer Science, Vol.86, No.3, 692-697, 2002
Curing of crust leather by ultraviolet radiation with urethane acrylate: Role of pigment
Eight different formulations were developed with four diacrylate reactive monomers such as tripropylene glycol diacrylate (TPGDA), 1,4-butanediol diacrylate (BDDA), 1,6-hexanediol diacrylate (HDDA), and 2-ethylene glycol dimethacrylate (EGDMA) and aromatic urethane diacrylate (M1100) in order to modify the crust leather surface. To study the effect of pigment on the performance of ultraviolet (UV)-cured leather surface, 1% pigment (congored) was incorporated in the formulations. Irgacure 369 (2%) was also used in the formulation as photoinitiator. The gel content, tensile strength, elongation at break, and pendulum hardness of UV-cured thin films with and without pigment was studied. The films without pigment produced better properties. Among all the diluents, BDDA-containing films showed the best performance. Different properties of UV-coated leather surface such as pendulum hardness, tensile strength, elongation, gloss (at 20degrees and 60degrees), adhesion, and abrasion were studied. Effect of gloss on simulating weathering was also performed.