Synthesis and Characterization of UV Curable Oligomers for Dual-crosslinking Systems 


Vol. 52,  No. 4, pp. 264-271, Aug.  2015
10.12772/TSE.2015.52.264


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  Abstract

In this study, acrylic resin-based ultraviolet curable oligomers were synthesized for a dual-crosslinking system applicable to thermosetting pressure-sensitive adhesives (PSAs). In addition, dual-curable PSA tapes were prepared by blending thermoset PSAs and UV curable oligomers. UV curable oligomers were synthesized using acrylate monomers, isophorone diisocyanate (IPDI), and propylene imine (PI). Acrylate monomers were added at a constant rate to IPDI for selective bonding to a single isocyanate group of IPDI, and a polymerization inhibitor was added to prevent polymerization. Additionally, the binding sites that were bonded to the adhesive backbone were formed by adding PI at a constant rate, after solvent addition. The synthesized UV oligomers were confirmed by ATR-FTIR spectroscopy and 1H NMR, and then the adhesive properties of the PSA tapes prepared by blending thermoset PSAs and UV curable oligomers were measured.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)