Effect of phenol-formaldehyde resin on mechanical durability and structure of low-density polyethylene

Abstract

Relevance. The development of technology for producing new polymer modifications with specific properties, which remain stable even when exposed to external factors, is a key area of focus for researchers in the field of high-molecular compounds. Purpose. The purpose of this study was to create new composite materials based on low-density polyethylene. Methodology. The extrusion blowing method on an industrial URP 1500 unit was used for processing low-density polyethylene (LDPE) and its modified films. Electron microscopic images of the surface were captured using a S-570 scanning microscope (Japan) at X1000 magnifications. Results. The composition and quantity of a low-molecular organic additive that alters the electrical characteristics of low-density polyethylene grade 10803-020 was ascertained. The modified low-density polyethylene is noteworthy for its minimal usage of additives and their compatibility with technology. Based on experimental data, it was found that the inclusion of 0.05 wt% phenol-formaldehyde resin in low-density polyethylene increases its mechanical strength to the highest level when compared to both the unaltered low-density polyethylene and low-density polyethylene with other additives. Furthermore, the study found that the addition of phenol-formaldehyde resin in small proportions (0.05 wt%) substantially enhances mechanical strength at varying temperatures. Conclusions. The electrophysical characteristics of low-density polyethylene and its modified versions were comprehensively investigated. The adequately altered low-density polyethylene exhibits considerably improved mechanical durability. It was indicated that the additives used, at optimal levels, influence the physical framework of low-density polyethylene, highlighting their technological compatibility differences