Abstract
Waterproofed moisture-permeable nylon fabrics were prepared by wet-coagulation process using blend of polyester type polyurethane (PU) /polyvinyl chloride (PVC) resins, and their wearing comfort as well as end-use properties were investigated.
Wearing comfort consists of three factors : (1) wetting sensibility, (2) tightness feeling, and (3) contact feeling. The wetting sensibility was measured by moisture permeability, waterproofing, dew drop coagulation, and water absorption. The tightness feeling was measured by the coefficients of friction. The contact feeling was measured by the coefficient of friction on artificial skin and KES system.
The end-use properties were measured by the abrasion resistance, the crumple resistance, and the peeling strength of the coated fabrics.
Waterproofing, water absorption, and the coefficient of friction of the coated fabrics were decreased with increasing the blend ratio of PVC/PU, and the feeling was improved in slipping touch, where as moisture permeability was almost constant. The dew drop coagulation value showed minimum at PU/PVC=80/20 (weight) . While the abrasion resistance was improved, the crumple resistance and the peeling strength were deteriorated. The coated fabrics left the problem for the end-use properties as the quality maintenance. However, it has become obvious that the possibility to obtain excellent wearing comfort of the coated fabrics can be attained by the minute adjustment of the coating polymer composition. (Received May 31, 1996)
