Synthesis and properties of waterborne UV-curable polyurethane acrylates using functional isocyanate

For an environmentally-friendly coating, waterborne UV-curable poly-urethane acrylates were synthesized with different mixing ratios of 4,4-methylene dicyclohexyl diisocyanate (H12MDI) and isocyanate-functionalized aliphatic acrylic ester (IAAE). Physical properties of the synthesized polyurethane a...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2017-12, Vol.659 (1), p.40-45
Main Authors: Song, Sam Cha, Kim, Suk Joon, Park, Kyung-Kyu, Oh, Joong-Geul, Bae, Seong-Guk, Noh, Geon Ho, Lee, Won-Ki
Format: Article
Language:English
Subjects:
Acrylates
Aliphatic compounds
Analyzers
Chemical synthesis
Crosslinking
Diisocyanates
Elongation
Hardness
Isocyanates
Mixing ratio
Molecular structure
Physical properties
Polyurethane resins
Tensile strength
Ultraviolet radiation
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Summary:For an environmentally-friendly coating, waterborne UV-curable poly-urethane acrylates were synthesized with different mixing ratios of 4,4-methylene dicyclohexyl diisocyanate (H12MDI) and isocyanate-functionalized aliphatic acrylic ester (IAAE). Physical properties of the synthesized polyurethane acrylates were measured as a function of mixing ratio. Molecular structure and physical properties of the synthesized waterborne UV-curable polyurethane acrylate were investigated by FT-IR and analyzers on particle size, tensile strength, pencil hardness, and adhesion. The results showed the tensile strength and pencil hardness of the cured coatings increased with IAAE while their elongation decreased. These trends would be due to the high reactivity of IAAE which leads to high cross linking density. The optimum physical properties were obtained by controlling the mixing ratio.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2018.1450824