Photoaging characteristics of the oriented polypropylene (OPP) adhesive tape and the effect of UV stabilizer addition were investigated with weather-O-meter, colorimeter, FT-IR and XPS. The adhesive force increased about twice in an early photoaging t...
Photoaging characteristics of the oriented polypropylene (OPP) adhesive tape and the effect of UV stabilizer addition were investigated with weather-O-meter, colorimeter, FT-IR and XPS. The adhesive force increased about twice in an early photoaging time of 2∼10 hrs, but after that decreased even to zero in photoaging time of 100 hrs. It was known by FT-IR and XPS analyses that C-C and C-H bonds in the adhesive molecules were broken and new C=O, O-H bonds were formed by photoaging. UV stabilizer mixtures such as phenol-phosphite, hindered amine light stabilizer (HALS)-benzophenone, HALS- benzotriazole were effective to enhance the anti-photoaging characterirtics.