期刊
PROGRESS IN ORGANIC COATINGS
卷 89, 期 -, 页码 35-41出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2015.07.021
关键词
UV curable; Waterborne polyurethane-acrylate; Carbon nitride; Composite
资金
- National Natural Science Foundation of China [51172099, 21476052, 21271087]
- Foundation of Enterprise-University-Research Institute Cooperation from Guangdong Province
- Ministry of Education of China [2013B090600148]
- Science and Technology Innovation Platform Project of Foshan City [2014AG100171]
The waterborne polyurethane-acrylate (WPUA and Wsi-PUA) oligomers were prepared by anionic self-emulsifying method, using isophorone diisocyanate (IPDI), polyethylene glycol (PEG), dimethylol propionic acid (DMPA), vinyl hydroxyl silicone oil (VHSO) and hydroxyethyl methyl acrylate (HEMA) as raw materials. Then, a series of UV-curable waterborne Wsi-PUA-C3N4 composites containing different content of g-C3N4 were obtained with oligomer and photoinitiator Darocur 1173. FTIR, XRD, TEM, SEM, and TGA were employed to investigate the structure, morphology and thermal property of the Wsi-PUA-C3N4 composite films. The effect of g-C3N4 content on the performance was also investigated. The mechanical performance, water resistance and gel content of UV-PUA films were measured. It was found that with g-C3N4 particle was introduced into Wsi-PUA oligomer, the hardness, tensile strength, gel content, water resistance and thermal stability of composite films were significantly augmented. Moreover, when the content of g-C3N4 was 1.0 wt.%, the UV-curable film had the best mechanical property. The obtained composite is promising for a number of applications, e.g., for protecting the surfaces of metal and wood. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved.
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