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Preparation and thermal properties of a novel UV‐cured star polyurethane acrylate coating
Author(s) -
Chen Xilei,
Hu Yuan,
Song Lei,
Jiao Chao
Publication year - 2008
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.995
Subject(s) - materials science , polyurethane , thermogravimetric analysis , acrylate , fourier transform infrared spectroscopy , coating , monomer , thermal stability , curing (chemistry) , composite material , uv curing , melamine , polymerization , polymer chemistry , chemical engineering , polymer , engineering
A novel star polyurethane acrylate (SPUA) used for UV‐curable coating was prepared from 2,4‐toluene diisocyanate, 2‐hydroxyethyl arcylate, and hexakis(2‐hydroxyethyl)melamine, and characterized using FTIR, 1 H‐NMR, and elemental analysis. Its UV curing behaviors investigated via FTIR clearly indicated that this monomer could be cured rapidly at air atmosphere. The conversion of the unsaturated bond of the cured monomer sample is near to 72% after exposed under UV light for 40 sec. The hardness, flexibility, and mechanical properties of the cured film were also investigated. The thermal stability of the cured film was studied using thermogravimetric analysis (TGA) and real time Fourier transform infrared (RTFTIR). Results showed that this oligomer has some superior properties and can be used for UV curing coating. Copyright © 2007 John Wiley & Sons, Ltd.