Experimental Study of the Chemical Composition and Evaluation of Microhardness of the Main Component of Heat-Shrinkable Tubing

Abstract

In this paper, a heat-shrinkable InnoSHRINK XTFS tubing with diameters of10 cm is investigated. The chemical composition is determined by the infrared spectroscopy using the absorption spectrum within the range of 5000500 cm-1 with a resolution of 4 cm-1 and the number of scans of 32 of the main heat-shrinkable component of the textile fabric. Based on the obtained dependence, it is concluded that the main heat-shrinkable component is polyolefin monofilament. Polyolefin monofilament must be modified to have a shape memory effect in order to acquire the ability to shrink. Its microhardness is calculated to identify suitable operating conditions of materials made from such filaments. Microhardness allows you to choose the maximum load on the material. Previously, microhardness was determined only for compressed polyolefin samples. The author has successfully carried out the evaluation of microhardness for a single textile thread by melting it into a slot with Wood alloy.