Effect of rapeseed oil on the rheological, mechanical and thermal properties of plastic lubricants

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F20%3A10245954" target="_blank" >RIV/61989100:27230/20:10245954 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/22:73602299 RIV/70883521:28110/22:63525719 RIV/61989100:27230/22:10245954

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs11043-020-09474-w" target="_blank" >https://link.springer.com/article/10.1007%2Fs11043-020-09474-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11043-020-09474-w" target="_blank" >10.1007/s11043-020-09474-w</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of rapeseed oil on the rheological, mechanical and thermal properties of plastic lubricants

Popis výsledku v původním jazyce

A strong difference in the physico-chemical properties of the plastic lubricants studied was found in this study through pressure drop, thermal analysis, vibration damping, texture hardness and rheological measurements. Oxidation aging of the lubricant sample containing rapeseed oil additive was proposed. Its higher thermal sensitivity was simultaneously confirmed by frequency dependent complex shear modulus of elasticity measurements as well as by rheological testing. Rapeseed oil modified lubricant showed a higher decrease in both storage and moduli losses due to a temperature increase from 16 to 26 o C compared to the rapeseed oil free sample. Simultaneously, the flow curves were shifted to the higher shear stresses (for plastic lubricant without rapeseed oil additive) typical for rheopectic fluids. For the rapeseed oil modified lubricant, the flow curves were shifted to the lower shear stresses, indicating its thixotropic fluid behaviour. The synthetic lubricant without rapeseed oil additive exhibited higher dissipative rheological behaviour as reflected by decreasing first resonance frequency peak position compared to the rapeseed oil modified lubricant as obtained from vibration damping measurements. It was found that the synthetic lubricant exhibited better vibration damping properties and mechanical energy dissipation into heat due to its higher viscous friction than the rapeseed oil modified lubricant under experimental conditions. (C) 2020, Springer Nature B.V.

Název v anglickém jazyce

Effect of rapeseed oil on the rheological, mechanical and thermal properties of plastic lubricants

Popis výsledku anglicky

A strong difference in the physico-chemical properties of the plastic lubricants studied was found in this study through pressure drop, thermal analysis, vibration damping, texture hardness and rheological measurements. Oxidation aging of the lubricant sample containing rapeseed oil additive was proposed. Its higher thermal sensitivity was simultaneously confirmed by frequency dependent complex shear modulus of elasticity measurements as well as by rheological testing. Rapeseed oil modified lubricant showed a higher decrease in both storage and moduli losses due to a temperature increase from 16 to 26 o C compared to the rapeseed oil free sample. Simultaneously, the flow curves were shifted to the higher shear stresses (for plastic lubricant without rapeseed oil additive) typical for rheopectic fluids. For the rapeseed oil modified lubricant, the flow curves were shifted to the lower shear stresses, indicating its thixotropic fluid behaviour. The synthetic lubricant without rapeseed oil additive exhibited higher dissipative rheological behaviour as reflected by decreasing first resonance frequency peak position compared to the rapeseed oil modified lubricant as obtained from vibration damping measurements. It was found that the synthetic lubricant exhibited better vibration damping properties and mechanical energy dissipation into heat due to its higher viscous friction than the rapeseed oil modified lubricant under experimental conditions. (C) 2020, Springer Nature B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MECHANICS OF TIME-DEPENDENT MATERIALS

ISSN

1385-2000

e-ISSN

—

Svazek periodika

24

Číslo periodika v rámci svazku

october

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

000583443600001

EID výsledku v databázi Scopus

2-s2.0-85093944253