| Popis: |
Providing thermal comfort is consideredas one of the most important requirement for our modern life which leads more stress to individuals. Thermal comfort is generally ensured by clothing systems regulating and balancing the heat and moisture transportation from body to the environment and vice versa. Nevertheless, the thermal comfort is one of the vital properties of upholstery fabrics since we spent more time on living room seating sets, furthermore sometimes they can be used as bed.The aim of this study is to evaluate thermal comfort properties such as thermal conductivity and thermal absorptivity of warp knitted cut-pile upholstery fabrics. For this purpose eighteen different fabrics were produced with different course densities (slack, medium, tight), different pile lengths (long, short) with different polyester texturized yarns constituted by different number of filaments in cross section, but same yarn counts. The samples were manufactured 3 bar Karl Mayer warp knitting machine with 28 Fein, keeping wale density constant by changing the underlap of first bar. The underlap lengths were changed to provide different pile lengths after raising process. The areal weights and thicknesses of the samples were measured according to standard tests and porosity of the samples was calculated from these measured properties. The thermal comfort properties of samples were measured using Alambeta test device following test standards. The results derived from the tests were evaluated statistically using Design Expert software and suggestions were proposed for optimum thermal comfort properties. |
