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http://dx.doi.org/10.12925/jkocs.2020.37.1.49

Preparation and Physical Properties of Polycaprolactone Diol-based Water-based Polyurethanes for Split Leather Coatings  

Lee, Joo-Youb (Department of Fire and Disaster Prevention Engineering, Jungwon University)
Publication Information
Journal of the Korean Applied Science and Technology / v.37, no.1, 2020 , pp. 49-55 More about this Journal
Abstract
In this study, isophorone diisocyanate (IPDI) and dimethylolbutanoic acid (DMBA) were used on the basis of poly caprolactone diol (3M, 3.5M, 4M, 4.5M) for the synthesis of water-based polyurethanes for coating on skin layers of leather. Tensile strength, elongation, and adhesive strength of the prepared samples were measured. As a result of measuring the tensile strength, the tensile strength was found to be 4.09 kgf / ㎟ when 3 moles were applied, and 1.071 kgf / ㎟ when 4.5 moles were applied. Elongation was 366 % when 3 moles of PCL were applied, and 709 % at 4.5 moles. Adhesive strength was 2.887 kgf / cm when 3 moles of PCL was applied and 0.998 kgf / cm when 4.5 moles were applied.
Keywords
polyurethane; dispersion; tesnile strength; adhesive strength; elongation;
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