INVESTIGATION OF THE INFLUENCE OF ACRYLIC AND URETHANE POLYMERS ON THE MECHANICAL PROPERTIES OF COTTON KNIT

Abstract

The purpose of the work is to study the effect of polymer coatings on the rigidity of cotton knitted fabric. Methodology.  As  the  object  of  the  study  aqueous  dispersions  of  acrylic  copolymers  and  aliphatic polyurethanes are used. Standardized methods for studying the indicators of physicomechanical properties of  polymer  films  and  textile  materials  are  used.  The  formed  polymer  films  are  characterized  by  their appearance and an indicator of relative elongation at break. Mechanical properties of cotton knitted fabric with polymer coating are evaluated in terms of rigidity. The paper presents the results of the study of the physicomechanical properties of polymer
films of acrylic and urethane nature. The dependence of the elasticity of the formed films on the functional groups of the polymer and their relative position is shown. According to the results of the experiment, it was established that the rigidity of the finished knitted fabric depends primarily on the chemical structure of the polymer  binder.  It  was  determined  that  the  studied  acrylic  copolymer  with  the  adhesion  promoter  and
aliphatic polyurethanes due to the high degree of cross-linking enhance the elastic properties of the polymer-fiber  composite  formed.  The  necessity  of  choosing  a  polymer  with  high  elasticity  to  form  a  coating  on  a knitted fabric was established.
Originality. It is proved that the proposed styrene-acrylic copolymer due to the formation of a highly elastic film allows us to obtain a soft handle of cotton knitted fabric. Practical  value.  The  results  of  the  experiment  are of practical importance  for the  development  of new finishing compositions for textile materials.