| 초록 |
The acrylic pressure sensitive adhesives (PSAs) were modified with UV-curable naphthyl epoxy acrylates to improve the thermal stability for the high temperature applications because naphthalene and phenyl tri-functional epoxy resins were known to be effective for a high Tg and thermal stability. The acrylic copolymer base resins were synthesized by solution polymerization of 2-ethylhexyl acrylate, ethyl acrylate, and acrylic acid with AIBN as an initiator. The naphthyl epoxy acrylates, used as reactive oligomers for UV-curing systems of PSAs, were synthesized with 1,5-dihydroxynaphthalene, epichlorohydrin, and acrylic acid. The variations in thermal and adhesive properties upon UV-curing were investigated in relation to the polymer structure of PSAs. The thermal stability of acrylic PSAs were improved significantly by incorporating naphthyl epoxy acrylate structures with UV-curing. |
