스플릿 레더 코팅을위한 폴리 카프로 락톤 디올 기반 수성 폴리 우레탄의 제조 및 물리적 특성

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

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 / mm2 when 3 moles were applied, and 1.071 kgf / mm2 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.