Abstract
Physicomechanical and tribotechnical properties of structural composite materials based on thermoplastic polymer and organomineral ingredients operating under friction and wear conditions during contact with pulp (raw cotton) have been investigated. The regularities of changes in the physical, mechanical and tribotechnical properties of structural composite materials during contact interaction with raw cotton were determined, the dependence of their properties on the type and content of graphite, mineral and fibrous fillers in structural composite materials was studied. It has been established that the nature and structure of fillers has a certain effect on the physical and mechanical properties of composite materials based on polypropylene. At the same time, fiber-filled compositions have the highest mechanical strength. It was also found that when mineral fillers are introduced into composite polymer materials, their coefficient of friction with raw cotton increases significantly, while the wear rate decreases, except for fillers with a plate structure (kaolin, talc), when used, a decrease in the coefficient of friction is observed. The introduction of carbon-graphite fillers into the composition of composite materials leads to a significant decrease in the coefficient of friction, temperature and static electricity charge in the friction zone with raw cotton. The introduction of fillers with a fibrous structure leads to a significant decrease in the rate of wear of the composites. It provides high strength and resistance of the material under thermomechanical action. Effective compositions of structural composite materials for work under conditions of contact interaction with fibrous mass have been developed, and their physical, mechanical and tribotechnical properties have been investigated.
Highlights
At present, the intensification of the development of cotton growing is of great importance, especially in mechanization and processing of raw cotton, which occupies a special place in the economy of Uzbekistan
The aim of this work is to study the physical, mechanical and tribotechnical properties of new structural composite materials with antifriction properties and high wear resistance based on a thermoplastic polymer and organomineral fillers for operation under conditions contact interaction with pulp-raw cotton
We investigated structural composite materials based on thermoplastic polymerpolypropylene (TU 6-05-1105-80) grade 05P10/020 - with mineral, fibrous and carbon-graphite fillers
Summary
The intensification of the development of cotton growing is of great importance, especially in mechanization and processing of raw cotton, which occupies a special place in the economy of Uzbekistan. One of the directions for solving the problem is developing new effective structural composite polymer materials and their use in cotton machines and mechanisms. Structural composite polymer materials increase their performance and ensure minimal damage to cotton fiber while maintaining its natural properties. The development and use of new structural composite polymeric materials provide an increase in the productivity of machines, a decrease in power consumption, and excludes the possibility of cotton ignition and fiber winding on the surface of the peg parts
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call