COMPARATIVE ANALYSIS OF HYGIENIC PROPERTIES OF FLEECE FABRICS FOR THE MILITARY UNIFORM IN THE ASPECT OF THEIR FUNCTIONAL APPLICATION

Abstract

Determination of quality indices of fleece textile fabrics of different manufacturers intended for the national form of military personnel, and comparison of established values with existing requirements. Method. The article provides an analysis of fleece materials for military uniform and presents the results of experimental studies of structural and physical properties, obtained in accordance with standardized techniques. Theoretical and experimental studies are based on the basic provisions of textile material science using the statistical processing of the experimental results.  The study allowed to establish the suitability of samples of fleece materials, which are used
for  the  manufacturing  of  modern  military  uniforms,  to  the  requirements  of  product  specifications  on  the values of surface density and the coefficient of air permeability. The correlation between these two indicators with  a  correlation  coefficient  of  0.81  is  established.  The  suitability  of  the  studied  fleece  materials  to  the requirements  of  product  specifications  on  the thickness  index  is  determined. The  influence  of  compressive
force on the thickness of fleece materials has been determined. A comparative analysis of vapor permeability coefficients of 10 samples of fleece materials in conditions of a temperature gradient of 15 0  ° C indicated their high ability to transport vaporous moisture. Scientific novelty. For the first time, the coefficients of air and vapor permeability of different types
of  fleece  materials,  which  are  used  for  manufacturing  of  modern  military  form,  are  determined.  The correlation between the values of the surface density and the air permeability coefficient for these materials is established. It is proposed to use as a qualitative characteristic of the density of the structure of the fleece materials the value of their change in thickness while measuring at different pressure. Practical  significance.  The  interconnection  of  structural  characteristics  of  fleece  materials  with parameters of vapor permeability and air permeability is determined, which will allow to choose from the assortment of samples offered by different manufacturers the best on hygienic properties.