STUDY OF INFLUENCE OF SMALL ADDITIVES OF SURFACTANTS AND ORGANOSILICON COMPOUNDS ON CURING PROCESSES OF EPOXYAMINE BINDERS
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2017, Vol 170, Issue 4
Abstract
Specificity of processing of epoxy oligomers is a combination of curing and manufacturing processes. Therefore, it is extremely important to know the kinetics of the oligomer-polymer transition to create optimal technological curing regimes and to produce polymer epoxy with the specific properties. For this purpose a computer simulation of the interaction of modifying additives with a hardener has been conducted. The obtained data indicate that the speed of the process of structuring epoxy compositions at the initial stage depends on the chemical structure, the level of their intermolecular interaction with ED-20 and amine hardeners. It has been found that, depending on the acid-base properties of the surfactant, they are capable of accelerating or slowing down the flow of the curing reaction.
Authors and Affiliations
Olena Barabash, Yuriy Popov, Yuliya Danchenko
INCREASE ACCURACY ACCOUNTING AND CONTROL OF DIESEL FUEL CONSUMPTION
One of the main factors that are associated with the economical use of energy resources is their accounting and control. The current trend of the active development of automating production processes in railway transport...
IMPROVING THE FUNCTIONING QUALITY URHC IN HIGH-SPEED CONDITIONS
In the article it is investigated the current state of high-speed rail transport in Ukraine and the main problems of its development. The domestic and international experience in the implementing of high-speed traffic on...
MODERN DIRECTIONS OF AUTOMATION OFTRAIN DISPATCHING ON THE RAILWAYS OF THE WORLD AND PERSPECTIVES OF THEIR IMPLEMENTATION IN UKRAINE
In this work the existing directions of automation of train traffic dispatching on the railways of the world and possibilities of their introduction on the railway transport of Ukraine are investigated. Following the exa...
TO THE QUESTION ON IMPROVEMENT IN FREIGHT CAR AXLE-BOX
The article contains a comparison of operating costs to the time of repair of the axle unit of the freight car. The economic effect of replacing the domestic standard axle box unit with cylindrical bearings with a pedest...
DEFINITION OF THE DUAL WEAR FEATURES OF THE BRAKE SHOES OF FREIGHT CARS
The work identifies the special character of the two-plane turning profile of brake pad wear, which takes place in a large number of brakes of modern freight wagons, for which the phenomenon was first discovered, and the...