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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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In this study, we investigated the chemical and physical properties of polyurethane artificial leather. Polyurethane artificial leather was prepared from polyol, diisocyanate, a chain extender, a catalyst, and nylon circular knit fabric. After manufacturing the artificial leather, the properties of six different samples were investigated according to their NCO index and ripening temperature. The equivalence ratios of the isocyanates (NCO) to polyols containing a hydroxyl group are referred to as the NCO index. Samples with an NCO index of 1.0, 1.4, and 1.8 were synthesized by changing the weight ratio of diisocyanate. Polyurethane artificial leathers were synthesized by varying the ripening temperature at room temperature and $60^{\circ}C$. As the NCO index increased, the number of unreacted NCO functional groups increased, thereby improving the physical properties of polyurethane artificial leathers. When the samples were prepared at a ripening temperature of $60^{\circ}C$, the surface of the polyurethane artificial leather changed, and the physical properties improved.
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참고문헌 (19)
참고문헌 신청
C. Hepburn / 1992 / Polyurethane Elastomers / Elsevier Science Publishers Ltd :1~27
G. Oertel / 1985 / Polyurethane Handbook / Hanser Publishers :1~38
M. Modesti / 2001 / An Experimental Method for Evaluating Isocyanate Conversion and Trimer Formation in Polyisocyanate Polyurethane Foams / Eur. Polym. J 37:949~954
W. Lin / 2017 / Effects of the NCOOH Molar Ratio and the Silica Contained on the Properties of Waterborne Polyurethane Resins / Colloid Surf. A 522:453~460
F. Levine / 2012 / Effect of Isocyanate to Hydroxyl Index on the Properties of Clear Polyurethane Films / Prog. Org. Coat 74:572~581
G. Oertel / 1985 / Polyurethane Handbook / Hanser Publishers :1~38
M. Modesti / 2001 / An Experimental Method for Evaluating Isocyanate Conversion and Trimer Formation in Polyisocyanate Polyurethane Foams / Eur. Polym. J 37:949~954
W. Lin / 2017 / Effects of the NCOOH Molar Ratio and the Silica Contained on the Properties of Waterborne Polyurethane Resins / Colloid Surf. A 522:453~460
F. Levine / 2012 / Effect of Isocyanate to Hydroxyl Index on the Properties of Clear Polyurethane Films / Prog. Org. Coat 74:572~581
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