Results 11 to 20 of about 1,774 (282)

Physical Chemistry and Rheological Behavior of Commercial Polymers of Viscosity Index Improver Used in Motor Oil Industry [PDF]

علوم و تکنولوژی پلیمر, 2013
Nowdays, production of high quality engine oils is one of the worries of our country’s engine oil industry. In this study, the behavior of four commercial polymers used in nation motor oil industry in obtaining the best viscosity index improver was ...
Hedayatollah Sadeghi Ghari, Zahra Shakouri   +1 more
doaj   +1 more source

A novel polyionic liquid with lubricity and viscosity-increasing dual functionalities as the additive in aqueous lubrication system

Friction, 2023
The polyionic liquid poly-PEGMA-r-METAC (PPM) with quaternary ammonium has been synthesized and evaluated as additive in aqueous lubricating fluids. The rheological behavior of aqueous lubricating fluids with PPM has been characterized to confirm PPM’s ...
Bo Yu, Kun Zou, Rui Wang, Qiang Chen, Rui Dong, Xiao Liu, Jiaying Zhang, Wenquan Lv, Qiangliang Yu, Meirong Cai, Feng Zhou   +10 more
doaj   +1 more source

Study on Relations of High-Pressure Viscosity Properties and the Polymer Behavior of Various Viscosity Index Improver-Blended Oil (Part 2)

Tribology Online, 2021
Using high-pressure viscosity measurements of 23 kinds of VII-blended oil reported in Part 1, a high-pressure viscosity prediction formula for VII-blended oil was derived.
Hitoshi Hata, Yoshitaka Tamoto
doaj   +1 more source

Effect of the drying method and texture improvers on reconstitution behavior of yogurt powder: physical and microbiological properties

Vitae, 2021
BACKGROUND: One of the most used and effective preservation strategies in foods is drying. However, there are problems with the rheological properties, color, and viability of lactic acid bacteria in the yogurt once reconstituted when applying such ...
Robinson Monsalve-Atencio, Karolay Sanchez, Juan Chica, Jairo Camaño, Johana Saldarriaga, Julian Quintero-Quiroz   +5 more
doaj   +1 more source

The Investigation of Viscometric Properties of the Most Reputable Types of Viscosity Index Improvers in Different Lubricant Base Oils: API Groups I, II, and III

Lubricants, 2022
Four commercial viscosity index improvers (VII) have been used to investigate the behavioral differences of these compounds in three types of universally applicable base oils.
Seyed Ali Khalafvandi, Muhammad Ali Pazokian, Ehsan Fathollahi   +2 more
doaj   +1 more source

Multifunctional viscosity index improvers

Journal of Chemical Technology & Biotechnology, 1994
AbstractStyrene alkylmethacrylate succinimide phosphoric acid additives are synthesised and evaluated for use in multigrade crankcase lubricating oils as multifunctional viscosity index improvers having both antioxidant and dispersant properties. The synthesis is based on reacting styrene alkylmethacrylate (prepared by the reaction of styrene and 2 ...
Mohamed M. Mohamed, Hamdi H. Abou El Naga, Mohamed F. El Meneir   +2 more
openaire   +3 more sources

Polymerization Parameters of Methacrylic Acid Esters as Viscosity Index Improvers in Lubricants [PDF]

علوم و تکنولوژی پلیمر, 2019
Hypothesis: A wide range of additives can be utilized to create desirable properties in lubricants. Polymers, as viscosity index improvers, are important additives in oils to improve their viscosity at different temperatures.
Seyed mehrdad Jalilian, Farshid Ziaee
doaj   +1 more source

Recycling of waste engine oils using a new washing agent [PDF]

, 2013
This paper addresses recycling of waste engine oils treated using acetic acid. A recycling process was developed which eventually led to comparable results with some of the conventional methods.
Hamawand, Ihsan, Rafat, Sardasht, Yusaf, Talal   +2 more
core   +5 more sources

Effects of Drive System Lubricant Additives upon Rolling Fatigue of Carburized and Hardened Steel Rollers [PDF]

, 1989
To clarify the effects of a drive system lubricant additive upon rolling fatigue of rollers manufactured from carburized and hardened steel, three types of oil were used as lubricants: one mineral base oil and the other two mineral base oils to which an ...
Fujii, Masahiro, Ohue, Yuji, Yoshida, Akira   +2 more
core   +1 more source

Quantification of oil film thickness on the top ring sliding surface by visualization

Nihon Kikai Gakkai ronbunshu, 2023
The oil film thickness of the piston ring at the sliding surface affects oil consumption, friction loss and wear of the ring and liner in internal combustion engines.
Akito WATANABE, Kenta SATO, Moritsugu KASAI, Hisanobu KAWASHIMA, Hidekazu SUZUKI, Tsuneaki ISHIMA   +5 more
doaj   +1 more source