Дослідження протизношувальних властивостей N,N-діалкідитіокарбаматів деяких 3d-металів як додатків до індустріальних олив

Abstract

The method of reagent extraction of carbon disulfide from the head fraction of crude benzene of coke production with the formation of metal N,N-dialkyldithiocarbamates as additives for industrial oils was developed in this work. Composition and structure of the obtained compounds were proved by elemental analysis (on the content of metal and Nitrogen) and IR spectroscopy on Nicolet iS10 device in range 400-4000 sm-1. Lubricant compositions were prepared by previously solving of N,N-dialkyldithiocarbamates in organic solvent followed by adding the solution in basic oil. On a four-ball testing machine were carried out the antiwear properties of the obtained lubricant compositions. According to the results of tests a wear modeling were carried out. It is shown that sodium and cobalt(II) N,N-diethyldithiocarbamates have better antiwear properties in comparison with other complexes and especially with pure basic oil I-40A. In addition the relatively high temperatures of decomposition of all the complexes predict their thermal stability in extreme loaded friction pairs.