MATHEMATICAL MODELING OF THE VAPOUR PERMEABILITY OF TEXTILE MATERIALS

Abstract

The current research is based on experimental values regarding the vapor permeability of knitted knitted fabrics made of different yarns. The objective of the research is to define the transfer of moisture by variables which establish the existence of a functional interdependence. For this purpose mathematical modeling of the respective transfer is required, finding the type of function that expresses the best the correlation between the variables and the dynamic evolution of the vapor transfer as a whole. The paper aims to highlight the correlation between the structure parameters of the double layer knits and their vapor permeability. The mathematical modeling of vapor permeability through these knits consists of two stages: obtaining the mathematical model and testing it. The mathematical model used in the experimental data processing, allowed the quantitative expression of the thermophysiological comfort characteristic, depending on the structure parameters of the analyzed knits. Based on the mathematical model, graphical representations were obtained by linear and spatial interpolation, adapted to concrete situations. These allow information to be obtained regarding the modification of the vapor permeability capacity according to the structural parameters involved in its mathematical model. The mathematical model obtained may be the starting point for further research, in which to obtain knits with new features and destinations.

Keywords

• vapour permeability
• knits
• structure parameters
• regression equation
• correlation coefficients