Technology of manufacturing composite phenol-nylon lining of drums of mine hoisting machines

Abstract

Objective. The development of an industrial technology for the production of phenolic caprolactam for lining the drums of mine hoisting machines, followed by testing of the material in industrial conditions. Methodology. A comprehensive approach that included several stages. The development of the technological process for the production of phenolic caprolactam was based on a detailed analysis of the optimal conditions for synthesis and material formation. The conduct of industrial tests ensured an in-depth study of the physical and mechanical properties of phenolic caprolactam, which is critical for its effective use. The manufacturing and installation of linings on mine hoisting machines provided an opportunity to assess the practicality of the developed material. Results. The successful development of an industrial technology for the production of phenolic caprolactam opens new possibilities for the production of lining materials. The study of the physical and mechanical characteristics of the material revealed its high strength and wear resistance properties, which are critical for application in mining conditions. Scientific novelty. For the first time, a comprehensive investigation has been conducted on the dependencies between the technological parameters of the phenol-caproic press composite manufacturing process (binder content, pressing temperature, specific pressure) and the key physical and mechanical characteristics of the resulting material (tensile strength and relative elongation). Standardized test methods were employed to ensure an objective assessment of the impact of parameter variations on material properties. Subsequently, statistical analysis of the experimental data yielded regression equations that quantitatively describe these dependencies. Practical significance. The developed technology ensures optimal conditions for achieving maximum strength of the phenolic caprolactam composite. This contributes to increasing the efficiency and safety of mine hoisting machines' operation.