DEFORMATION CHARACTERISTICS OF HIGH STRENGTH KNITTED FABRICS

Abstract

Investigation of deformation characteristics of high-strength knitted fabrics produced with the use of polyethylene yarn. Methodology. The article uses an experimental method for the study of knitted fabrics samples in accordance with standard methods. The knitting structure with increased strength characteristics and resistance to the action of  negative  mechanical  effects  has  been  developed  and  their  deformation  characteristics  have  been evaluated.  The  knitted  fabrics  are  made  on  double-circular  knitting  equipment  10  gauge  by  double-layer structure with press connection of the layers by the main yarn. The polyethylene yarn Doyentrontex linear density 44 tex in pure form and in combination with a polyamide yarn for technical purposes linear density 29 tex have been chosen as a raw material. In order to establish the load value by deformation of knitted fabrics, the indicators of the tensile strength of the knitwear along the wales and courses are determined. It has  been  revealed  that  most  of  the  permanent  deformation  of  knitwear  for  technical  purposes,  which  is subject to large mechanical loads during operation of the product, is within acceptable levels.  Originality. Consists in the study of the deformation character and deformation relaxation of high –strength double layer weft knitted fabrics, made with the use of polyethylene yarn. Practical value. Developed knitted fabrics with high strength and resistance to mechanical damage
have sufficient resilience and elasticity, as well as acceptable level of permanent deformation, which allows them  to  be  recommended  for  the  manufacture  of  a  wide  range  of  protective  products  from  mechanical hazards.