THE EFFECT OF THE FORMATION OF POLYMER /SURFACTANT COMPLEXES ON SELECTED TRIBOLOGICAL PROPERTIES OF THEIR AQUEOUS SOLUTIONS
Journal Title: Tribologia - Year 2018, Vol 281, Issue 5
Abstract
Aqueous solutions of sodium alkyl sulphate (surfactant) and polyvinylpyrrolidone (polymer) whose physicochemical properties, including complexing ability, have been widely described in the literature were proposed as a model lubricant. It has been assumed that aqueous solutions of these compounds will favourably modify lubricating properties of water under high load conditions. For this purpose, measurements were made on a four-ball apparatus (T-02 Tester) for aqueous solutions of these compounds. Two kinds of tests were carried out: at constant loads (2, 3, and 4 kN) and variable loads within the range of 0 to 7.2 kN. Unexpectedly, high decreases in motion resistance and wear as well as an increase in antiseizure properties were found in relation to water as a base. The results obtained are so promising that solutions with an optimized composition can find practical applications. The surprisingly high effectiveness of the additives used results from the formation of surfactant/polymer complexes. These adducts adsorb at the interface, and, under friction conditions, they form a lubricant film capable of carrying high loads.<br/><br/>
Authors and Affiliations
Marian W. SUŁEK, Radosław JEDYNAK
Tribologiczne aspekty bioniki
Bionika jest nauką wskazującą zasady działania systemów technicznych, których charakterystyka jest zbliżona do charakterystyki żywych organizmów. Niniejsza praca przedstawia tribologiczne aspekty bioniki. Uzasadnienie ni...
Opis uszkodzeń warstwy DLC i podłoża Si w badaniach mikrotwardości z rejestracją sygnału EA
Research on the tribological parameters for materials couples used for valves, valve guides and seat inserts
Research on the tribological properties of TiAl alloys used for valves mating with valve guides and seat inserts, made of cast iron, has been done. The aim of the research has been to obtain values of the coefficient of...
TRIBOLOGICAL PROPERTIES OF CEMENTED CARBIDES IN ABRASIVE SOIL MASS
The paper presents the results of wear intensity tests of B26 and G10 cemented carbides conducted under different soil conditions by the spinning bowl method. Wear intensity results were compared with the data for Hardox...
Ocena zużycia powierzchni powłok epoksydowych starzonych wodnym roztworem wodorotlenku potasu
Niniejszy artykuł dotyczy oceny wpływu starzenia wodnym 20% roztworem wodorotlenku potasu na zużycie powierzchni powłok epoksydowych. Powłoki epoksydowe w wyniku starzenia ulegają destrukcji chemicznej w postaci utlenian...