Modelowanie i ocena właściwości środków smarowych stosowanych w przemyśle spożywczym

Drabik, J.; Trzos, M.; Kozdrach, R.; Wrona, M.; Wolszczak, M.; Duszyński, G.; Piątkowski, M.

doi:10.15199/62.2018.12.39

Cited by 4 publications

(3 citation statements)

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“…The results of the tribological properties of lubricating greases formed on vegetable base oil and modified with different amounts of polytetrafluoroethylene are presented below. Tests of tribological properties of lubricating compositions produced showed that the used modifying additive has a positive effect on changes in the coefficient of friction and the ability of obtained lubricants to anti-wear protection of the tribosystem in relation to compositions made on other plant bases and modified with other additives [51][52]. For the additive-free composition A, stable friction coefficient values were observed after the initial increase.…”

Section: Results Of Testing the Tribological Propertiesmentioning

confidence: 98%

The tribological properties of lubricating greases produced on vegetable base and modified of polytetrafluoroethylene

Kozdrach

2020

Finnish J. Trib.

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The article presents the results of research on the influence of polytetrafluoroethylene additive on the tribological and rheological properties of selected lubricant compositions. Based on the obtained test results, it was found that the introduction of a modifying additive to the lubricant structure allows a significant reduction of the coefficient of friction, thus increasing the efficiency of tribological protection of the tribosystem. All lubricating compositions modified with at least 1% polytetrafluoroethylene guarantee effective anti-wear protection under load conditions of the tribosystem. Modification of the tested lubricating compositions with the applied additive affects the increase of indicators characterizing the fatigue life of the examined lubricating greases based on sunflower oil. The introduction of the polytetrafluoroethylene into the structure of the tested lubricants changed the values of the MSD correlation function and the G’ and G’’ modules, which significantly influenced the internal structure of the tested lubricant compositions.

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Section: Results Of Testing the Tribological Propertiesmentioning

confidence: 98%

The tribological properties of lubricating greases produced on vegetable base and modified of polytetrafluoroethylene

Kozdrach

2020

Finnish J. Trib.

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“…To the tribological tests was used the lubricating composition, which was prepared using the nontoxic ingredients, that are a dispersing and dispersed phase [48][49][50][51]. As a dispersing phase, the vegetable oil with very good physicochemical properties was used.…”

Section: The Methodology Of Researchmentioning

confidence: 99%

The Tribological and Rheological Properties of Vegetable Lubricating Grease Modified of TiO2 Nanoparticles

Kozdrach

2024

Tribol. Ind.

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The article presents the results of tribological and rheological research of lubricating composition modified of various content of titanium dioxide. The analysis of anti-wear properties during the test for the tested lubricating composition indicates a significant change in this parameters for lubricants modified of titanium dioxide. A change of the value of evaluated tribological parameters leads to change in the structure of the composition carried out tests and a change in the effectiveness of the tribological protection of the tribosystem. The content of the thickener, base of oil and additive in the lubricant structure affects the level of the anti-wear properties, as evidenced by the results obtained during the tribological tests presented in this article. Also, the tribological tests were carried out with the T-02 four-ball machine for the base grease, i.e. without a modifying additive, and compared with the results obtained for lubricating greases modified with various amounts of titanium dioxide. The results of welding load, limiting pressure of seizure, scuffing load, limiting load of scuffing and limiting load of wear were used to evaluate the tribological properties. Based on the results of tribological tests of vegetable lubricating compositions, it was found, that the addition of titanium dioxide changed the anti-wear and anti-seizure properties of the vegetable lubricating compositions under study. The introduction of various amount of titanium dioxide caused an increase of dynamic viscosity at lower shear rates and significant changes of viscosity in the low temperatures. The introduction of modifier led to the decrease of yield point value from content value of used additive of tested lubricating compositions.

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“…The lubricating grease used in the test was based on a vegetable base oil (Kozdrach, 2016a(Kozdrach, , 2016bDrabik et al, 2018aDrabik et al, , 2018bDrabik et al, , 2018cIłowska et al, 2018;Skowroński, 2018a, 2018b;Szmatoła et al 2018). Lithium stearate was used as a thickener for the lubricating grease.…”

Section: The Characteristics Of the Test Materialsmentioning

confidence: 99%

The influence of montmorillonite content on change the physicochemical properties of lubricating greases produced from vegetable base oil

Kozdrach¹

2020

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The publication presents the results of investigations into the influence of different amounts of a modifying additive on the physicochemical properties of selected lubricating compositions. Montmorillonite, as a representative of stratified silicates, was used to modify lubricating grease produced from a vegetable base oil, and lithium stearate was used to thicken it. Investigations of the physicochemical properties of the base lubricating grease were carried out and compared with the results obtained for lubricating greases containing the modifying additive. The selected parameters were penetration, penetration after prolonged kneading, dropping point, emission of oil from grease, anticorrosive properties by dynamic method, and mechanical stability-an attempt to roll out and oxidize the lubricant with a PetroOxy apparatus. Based on the results of physicochemical tests, it was determined that the applied modifying additive causes an increase in the dropping point, which limits the applicability of lubricating greases, as well as a decrease in oil emission, which was responsible for the lubricating effectiveness of the tested lubricants. It had a positive effect on mechanical stability and the tested lubricants were not disqualified from use in established applications, reducing the degree of corrosion on ball bearings working in the presence of the lubricating greases during testing. This had a positive effect on the condition of machines and devices where the lubricating greases are used and increased the oxidative stability when its content in the lubricating grease was at least 5%. This figure represents the upper limit of the modifying additive content in the lubricating greases.

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Modelowanie i ocena właściwości środków smarowych stosowanych w przemyśle spożywczym

Cited by 4 publications

References 0 publications

The tribological properties of lubricating greases produced on vegetable base and modified of polytetrafluoroethylene

The tribological properties of lubricating greases produced on vegetable base and modified of polytetrafluoroethylene

The Tribological and Rheological Properties of Vegetable Lubricating Grease Modified of TiO2 Nanoparticles

The influence of montmorillonite content on change the physicochemical properties of lubricating greases produced from vegetable base oil

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