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Abstract
This work focused on the development of ultra-strong knitted fabrics for personal protective equipment used for protection against mechanical damages. Such knits have to have enhanced mechanical strength properties, which strongly depend on knitting pattern and structural characteristics. Six variants of weft knitted structures were developed and knitted from ultra-high molecular weight polyethylene and additional elastomeric component. The elastomeric component was used to increase the elasticity and toughness of knits; however, it had a high influence on mechanical properties, as well. The performed mechanical tests allowed us to identify dependence of mechanical properties, such as breaking force and elongation at break and resistance to abrasion, tearing, cutting and puncture, on architecture and structural parameters of the knits. Obtained results demonstrate that elastomeric component has high influence on mechanical properties knits and can change the principal mechanical behaviour of knits.
Highlights
Production of ultra-strong knits is a promising and important direction for personal protective equipment used to protect the human body from different kinds of threats such as sharp objects.This group of products includes gloves and sleeves protecting various parts of hands, vests, helmets, and long hoses, etc
Knits of the second structural variant, named weft fleece pattern (WPE), were knitted in a plain-fleece pattern from the same Ultra-high molecular weight polyethylene (UHMWPE) yarns in combination with 100 tex linear density elastomeric (EL) yarn, laid as the fleece-yarn in every fourth course in tuck-miss pattern with 1 × 3 repeat. Both variants are based on the same single jersey pattern, the second structural variant is designed with laid elastomeric yarn in order to improve wearing comfort
The tensile test of the newly developed knitted fabrics was performed in order to determine
Summary
Production of ultra-strong knits is a promising and important direction for personal protective equipment used to protect the human body from different kinds of threats such as sharp objects. This group of products includes gloves and sleeves protecting various parts of hands, vests, helmets, and long hoses, etc. Ultra-high molecular weight polyethylene (UHMWPE) is well-known high-performance fibre to produce protective textile material due to its high resistance-to-impact damage [6]. UHMWPE yarns are known as nontoxic and good fatigue resistance This type of raw material is usually processed on knitting equipment with sinkers, which ensure concentrated execution of individual loop forming. High-performance fibres are typically used in woven or non-woven forms and significantly less frequently in knitted form
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