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KMID : 0380319930510010177
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Journal of Korean Research Institute for Better Living
1993 Volume.51 No. 1 p.177 ~ p.200
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The Effects of Varing Hard Segment Rations and Additives upon Finishing Water -resistance and Vapor-transmission: The Case with Nylon Taffeta Coated with polyurethane
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Abstract
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Abstract-Upon coating nylon taffeta with two types of polyurethane resin and wet coagulation, fabrics with water-resistant and vapor trasmittability were obtained. During the experimentality wetting thickness of coating resin was fixed at 0.3mm,
with
its concentration of 50%. The examination of physical properties and sensitivity test of coated fabrics added with silica, collagen, surfactants were undertaken.
The conclusions obtained from this study are as follows. 1. Increasing hard segment ratio in resin solution result in enlarged pores and increased vapor transmittability. 2. Using anion surfactant induces pores to be expanded, while nonion
leading
to
the opposite effect. 3 With the amount of silica increased, thicknes of skin layer and vapor transmittability are on the rise. On the other hand, water entry pressure is decreased. 4 Adding collagen leads to forming open pores on the layers
horizental
to the surface with water-entry pressure decreased and vapor transmittability increased 5. As predicted, increasing the amount of additives translates into decreased peeling strenght. 6. Upon being added with collagen, compared with silica,
uneven
surfaces of coated fabrics create drier feeling.
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