V. E. Ivanov’s research while affiliated with Sukhoi State Technical University of Gomel and other places

The drawing process was simulated on the wear machine of disc-fiber type in order to optimize formulations of water-based lubricating compositions. The data obtained from model tests (friction coefficient, contact load, temperature regime) appeared helpful in calculating technological parameters of the drawing process by using, as computer program algorithm, Gubkin's formula of determining pressure on the drawer's wall. The field tests were performed on a drawing mill 160/15; copper wire was drawn in 24 steps from a diameter of 10 to 0.5 and 0.56 mm across with the rate of 25.5 m/s. Aqueous emulsions crosslinked by liothropic solutions of liquid crystal materials in mineral oil do not separate and are not overheated (T=60-65°C). This ensures an intensive technological regime and high quality surface free of scratches, waves or impurities.

Some physical-technical processes, related to technology of fabricating compositions with mesomorphous properties are considered. Timely and quantitative characteristics of additive dissolution process are presented. Results of studying optical properties of compositions with mesomorphous characteristics are given and parameters obtained are analyzed. Diagnostics of composition mesomorphous state by temperature dependences of their viscosity make it possible to optically classify the medium state of transparent and nontransparent compositions.

The procedure and results of investigations of mesomorphic-state composite lubricants by optical and viscosimetric methods are presented.

Optimum conditions for cementing prepared roofing paper are determined and an installation for laying prepared roofing paper as a hydroinsulating roofing carpet is designed.

It was shown in the present work that the structurizing of lubricant compositions that are based on mineral oil can be accomplished with the aid of 'fatty acid pitch' - waste products from refining vegetable oils and industrial fats. The fatty acid pitch contains saturated and unsaturated acids, including myristic, palmitic, and oleic acids as well as their esters, and products of polymerization and condensation. The molecules of these compounds in the normal trans isomer state have a filamentary (nematic) shape, which results in structurizing of the fatty acid pitch. Fatty acid pitch of raw cottonseed oil and a mixture of fatty acid pitches of vegetable oils and industrial fats were investigated as structurizing additives for low-viscosity mineral oil.