Some azine and azole derivatives as antioxidant additives for lithium lubricating grease

Fikry, R. M.; El-Adly, R. A.; Ismail, Nagwa Abdallah; El-Tabei, A.S.; Al-Aidy, Hend

doi:10.1016/j.ejpe.2012.07.003

Cited by 18 publications

(12 citation statements)

References 11 publications

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“…Anti‐oxidants remain the most common additives found in greases 206, 222. Azine and azole derivatives are excellent antioxidant additives 223 because of their anti‐corrosion property that prolongs the life span of contact metal surfaces. Another importance of these additives is their anti‐wear and extreme pressure property that prevents the excessive wear of metal contact; the addition of both additives to grease yields lubricant‐based fluids 98, 159, 224.…”

Section: Additives and Property Modifiers In Lubricating Greasesmentioning

confidence: 99%

Switchable Substrates for Analyzing and Engineering Cellular Functions

Nakanishi¹

2013

Chemistry An Asian Journal

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Cellular activity is highly dependent on the extracellular environment, which is composed of surrounding cells and extracellular matrices. This focus review summarizes recent advances in chemically and physically engineered switchable substrates designed to control such cellular microenvironments by application of an external stimulus. Special attention is given to their molecular design, switching strategies, and representative examples for bioanalytical and biomedical applications.

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Section: Additives and Property Modifiers In Lubricating Greasesmentioning

confidence: 99%

Switchable Substrates for Analyzing and Engineering Cellular Functions

Nakanishi¹

2013

Chemistry An Asian Journal

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“…It is increasingly the case that, as the least dense metal, lithium has found several industrial applications in science and technology in the 21st century, including lithium‐ion batteries, medical drugs, heat‐resistant glass and ceramics, grease lubricants, thermonuclear fusion, etc . Market demand for lithium has grown correspondingly, and accessing lithium resources has become a hot research topic currently.…”

Section: Introductionmentioning

confidence: 99%

A Self‐Supported λ‐MnO₂ Film Electrode used for Electrochemical Lithium Recovery from Brines

Zhou

Feng

et al. 2018

ChemPlusChem

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Lithium recovery from an aqueous resource was accelerated by electrochemically driving the transformation of MnIV/MnIII with a spinel λ‐MnO2 film electrode. A λ‐MnO2 electrode without binders or conductive additives is preferred for achieving a large capacity at high current density and long‐term cycling capability. In this study, a film of Mn(OH)2 was first deposited on the surface of Pt or graphite substrates owing to alkalization near the cathode, then it was oxidized to a Mn3O4 film by air, followed by being hydrothermally lithiated to LiMn2O4 spinel and, finally, it was turned into the λ‐MnO2 film electrode through potentiostatic delithiation. The results show that the charging/discharging electric capacity of the fabricated λ‐MnO2 film electrode was up to ≈100 mAh g−1 at a current density of 50 mA g−1 in 30 mm Li+ aqueous solution, twice that of the λ‐MnO2 powder electrode. Also, 82.3 % lithium capacity remained after 100 cycles of an electrochemically assisted lithium recovery process, indicating high availability and good stability of the λ‐MnO2 spinel on the electrode. The energy consumption for each cycle is estimated to be approximately 1.55±0.09 J, implying that only 4.14 Wh is required for recovery of one mole of lithium ions by this method.

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“…The growing demand for biodegradable materials has created an opportunity for using vegetable oils as alternatives to mineral oil-based materials [25][26][27], especially for machine operations. Several emulsifiers are used in vegetable oils in metalworking fluid formulations, including dibutyl 3,5-dit-butyl-4-hydroxybenzylphosphonate [28,29], phosphate esters containing a benzotriazole group [29,30], and triazine dithiocarbamate derivatives [31]. Nonionic emulsifiers that may be used to formulate metalworking fluids of vegetable oils are esters from the reaction of acid chlorides with polymeric nonionic surface active agents [32] polyethyleneglycol-460-monooleate, polyethyleneglycol-860-monooleate [33], polyether amines, linear alcohols, and alcohol ethoxylates.…”

Section: Introductionmentioning

confidence: 99%

Eco‐Friendly Vegetable Oil‐Based Metalworking Fluid (MWFs) from Modification of Glycolyzed Products of Polyurethane

Negm

El-Sukkary

Sayed

et al. 2016

J Surfact & Detergents

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In order to produce environmentally friendly and efficient metalworking fluids and also to reduce the impact of waste polyurethane polymer in the environment, polyurethane polymers were recycled in a novel process. Waste polyurethane foam was glycolyzed using polyethylene glycol 400 to give the glycolyzed product (GPU). The GPU was esterified using oleic acid, linoleic acid, and acids obtained from hydrolysis of rapeseeds oil, coconut oil, and castor oil to obtain GPUO, GPUL, GPUA, GPUB, and GPUC, respectively. The prepared additives were used as emulsifiers in the formulation for metalworking fluid application in the presence of rapeseed oil, coconut oil, and castor oil as environmentally friendly oils. The results showed good stability of the prepared water-vegetable oil emulsions. The pH, specific gravity, kinematic viscosity at 40 and 100°C, surface tension, and anticorrosion tests of the prepared formulation showed acceptable results compared with the published data for several metalworking fluid formulations.

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Some azine and azole derivatives as antioxidant additives for lithium lubricating grease

Cited by 18 publications

References 11 publications

Switchable Substrates for Analyzing and Engineering Cellular Functions

Switchable Substrates for Analyzing and Engineering Cellular Functions

A Self‐Supported λ‐MnO₂ Film Electrode used for Electrochemical Lithium Recovery from Brines

Eco‐Friendly Vegetable Oil‐Based Metalworking Fluid (MWFs) from Modification of Glycolyzed Products of Polyurethane

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Some azine and azole derivatives as antioxidant additives for lithium lubricating grease

Cited by 18 publications

References 11 publications

Switchable Substrates for Analyzing and Engineering Cellular Functions

Switchable Substrates for Analyzing and Engineering Cellular Functions

A Self‐Supported λ‐MnO2 Film Electrode used for Electrochemical Lithium Recovery from Brines

Eco‐Friendly Vegetable Oil‐Based Metalworking Fluid (MWFs) from Modification of Glycolyzed Products of Polyurethane

Contact Info

Product

Resources

About

A Self‐Supported λ‐MnO₂ Film Electrode used for Electrochemical Lithium Recovery from Brines