Journal
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
Volume 66, Issue -, Pages 99-103Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijadhadh.2016.01.002
Keywords
Rosin; High adhesive; Polyurethane acrylate; Photocuring
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A high adhesion polyurethane acrylate (HPUA) was synthesized from isophorone diisocyanate (IPDI), hydroxyethyl acrylate (HEA) and hydrogenated rosin. The chemical structure was characterized by H-1 NMR and FTIR; storage modulus and glass transition temperature (T-g) were measured with dynamic mechanical analyzer. Real time infrared spectroscopy (RTIR) was used to investigate the effect of different concentrations of photoinitiator on the double bond conversion of HPUA. Real time volume shrinkage and adhesion on glass, poly(ethylene terephthalate) (PET), polycarbonate (PC) and polyvinyl chloride (PVC) substrates were also measured by laser micrometer and universal testing machine. Results showed that this kind of HPUA has a high photopolymerization rate, low volume shrinkage and high adhesion compared with commercial polyurethane acrylate competitor. (C) 2016 Elsevier Ltd. All rights reserved.
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