THE EFFECT OF MOLYBDENUM DISULFIDE ON THE PHYSICAL, MECHANICAL AND TECHNOLOGICAL PROPERTIES OF POLYAMIDE-6

The article considers the features of polyamide 6 modification with additives based on molybdenum disulfide, which significantly expands the scope of its application. However, when modifying polymers, along with changing the target properties of polymers, others can also be adjusted, sometimes in a negative direction. The main task of composite material developers is to select a balanced composition of the composition to achieve the goal - to obtain an antifriction wear-resistant composite. The paper presents a brief analysis of the effect of molybdenum disulfide on the properties of the polymer composition as a whole based on a literature review of publications over the past 5-7 years (16 sources, including cross-references), the effect of molybdenum disulfide on the physicomechanical and technological properties of polyamide 6 is studied. In addition, various approaches to the creation of polymer composites are considered. Initially, a fairly wide range of additive concentrations was studied and a narrow sector of its rational and effective use was determined. At the second stage of the study, the approach to polymer modification was changed. A modification scheme focused on large-scale production of polymer products was used. Based on the results of preliminary studies, international experience in this area was analyzed. It was noted that similar effects were observed when creating nanocomposites using modified molybdenum disulfide samples, but the general behavior of the polymer material and the achieved characteristics are different. Within the framework of the work, difficulties in creating composites based on molybdenum disulfide with direct mixing of components on a twin-screw mixing machine were noted and a method for their creation using concentrates was proposed. The features of the behavior of polymer compositions in the areas of ultimate deformations were revealed, an increase in tensile strength and a change in the nature of destruction were noted, and assumptions were made about their nature. It was noted that the zone of ultimate deformations can become the subject of further research and is of interest in light of the formation of highly oriented states of polyamide-6 polymer compositions.