The Effect of High-Density Polyethylene on the Properties of Elastomeric Materials Made of Synthetic Polyisoprene

Abstract

The work is devoted to the study of the effect of high-density polyethylene on the main technological, physical-mechanical and operational properties of elastomeric materials filled with carbon black N330 (35 parts by weight) based on synthetic isoprene rubber grade SKI-3. As high-density polyethylene used polyethylene brand PND 277-73. Rubber compounds were made in a Haake PolyLab rubber mixer for 9 minutes. It has been established that the introduction of high-density polyethylene into the rubber compound leads to a significant increase in green strength (up to the level of natural rubber and even higher). It was also found that polyethylene increases the Mooney viscosity of the rubber compound, conditional stress at 100 % elongation, tear resistance and residual elongation after rubber rupture, but slightly reduces the conditional tensile strength of the rubber. It should be noted that when the content of polyethylene up to 7 wt. hours, the operational characteristics considered in the work practically do not change. The tests carried out showed that the optimal content of polyethylene in the rubber mixture is 7 wt.h. With such a content of polyethylene, the green strength of the rubber compound increases to the level of a rubber compound based on natural rubber, but at the same time, the basic physical, mechanical and operational characteristics of rubber remain practically unchanged.