scholarly journals Development and research of metal-cladding additive to lubricants

2021 ◽  
Vol 262 ◽  
pp. 01007
Author(s):  
Victor Balabanov
Keyword(s):  
Fatty Acids ◽  
Rolling Bearing ◽  
Metal Salts ◽  
Friction Zone ◽  
Metal Cladding ◽  
Metal Plating ◽  
Tribotechnical Properties ◽  
Plastic Metal ◽  
Antiwear Properties ◽  
Plating Additives

The article indicates that one of the directions of increasing the wear resistance of rubbing parts of machines and equipment, reducing friction losses and temperatures in the friction zone is the use of special metal-plating additives to lubricants. The Engineering Center of the Timiryazev Academy has developed an experimental metal-cladding additive under the code name “MP-21” based on a mixture of fatty acids (oleic, stearic, linoleic) and plastic metal salts of the same fatty acids. The tribotechnical properties of lubricating compositions with various additives in recommended concentrations were investigated on a modernized Timken-mashine friction machine in a steady state using samples from real rolling bearing assemblies. It has been established that the developed metal-cladding additive “MP-21”, along with the additive Renom Engine, provides maximum antiwear properties and allows to reduce the wear of rubbing samples in comparison with other investigated additives from 30% to several.

A Simple and Efficient Large-Scale Synthesis of Metal Salts of Medium-Chain Fatty Acids

2009 ◽  
Vol 13 (3) ◽  
pp. 581-583 ◽  
Author(s):  
Boulos Zacharie ◽  
Abdallah Ezzitouni ◽  
Jean-Simon Duceppe ◽  
Christopher Penney
Keyword(s):  
Fatty Acids ◽  
Large Scale ◽  
Metal Salts ◽  
Medium Chain ◽  
Medium Chain Fatty Acids ◽  
Large Scale Synthesis ◽  
Chain Fatty Acids

A Wide Line Nuclear Magnetic Resonance Study of Molecular Motion in n-Alkyl Ammonium Chlorides

1973 ◽  
Vol 51 (12) ◽  
pp. 1990-1994 ◽  
Author(s):  
J. Tsau ◽  
D. F. R. Gilson
Keyword(s):  
Fatty Acids ◽  
Molecular Motion ◽  
Nuclear Magnetic Resonance Study ◽  
Metal Salts ◽  
Alkali Metal Salts ◽  
Magnetic Resonance Study ◽  
Line Nuclear Magnetic Resonance ◽  
Chain Axis ◽  
Wide Line ◽  
Alkyl Ammonium

Wide line n.m.r. studies of n-alkyl ammonium chlorides, C3–C10, show two transitions. The first transition is due to reorientation about the chain axis, the second to a transition to a mesomorphic phase. This phase is probably similar to that observed for the alkali metal salts of fatty acids.

scholarly journals Synthesis and Characterization of Some Ester-type Biolubricants of Soiabean Fatty Acids

2017 ◽  
Vol 54 (2) ◽  
pp. 386-389 ◽  
Author(s):  
Sorina Boran ◽  
Sabina Nitu
Keyword(s):  
Fatty Acids ◽  
Point Of View ◽  
Synthesis And Characterization ◽  
Synthetic Ester ◽  
Microwave Reactor ◽  
Tribotechnical Properties ◽  
Physico Chemical ◽  
Hydroxyl Compounds ◽  
Structural Point

Growing demands from industry for the use of eco-friendly lubricants led research towards finding environmentally friendly products with superior lubricating characteristics. Vegetable oils and synthetic ester oils are competitive base oils used to obtain lubricants with good physico-chemical, rheological and tribotechnical properties, biodegradable lubricants without negative environmental impacts. In this study we aimed the synthesis and characterization of bioesters with lubricant properties, using as acid component the soybean oil fatty acids in conjunction with the following hydroxyl compounds n-buthanol (P1) and 1,2-propilenglycole (P2), respectively. These complex esters were synthesized in a microwave reactor in a single stage in the presence of the catalyst at the reflux temperature. Characterization was carried out in the respective of structural point of view and as a lubricant.

THE FLOW PROPERTIES AND MESOMORPHIC BEHAVIOR OF ANHYDROUS SOAPS AT ELEVATED TEMPERATURES: PART I. SODIUM STEARATE ABOVE 200

1953 ◽  
Vol 31 (9) ◽  
pp. 828-836 ◽  
Author(s):  
B. D. Powell ◽  
I. E. Puddington
Keyword(s):  
Fatty Acids ◽  
Alkali Metal ◽  
Elevated Temperatures ◽  
Large Body ◽  
Sodium Stearate ◽  
Metal Salts ◽  
Transition Temperatures ◽  
Alkali Metal Salts ◽  
Flow Properties ◽  
Transition Points

Although there is a large body of literature dealing with the transition temperatures of the alkali metal salts of the fatty acids, it has not always been possible to feel confidence in their graphical determination. Hitherto few measurements have been made of the viscosity of soaps as a function of temperature and rate of shear, though such measurements promise to prove useful, as sharp changes have been observed in the regions of previously reported transition points. The viscosity apparatus is described and the results obtained with anhydrous sodium stearate given, from the aspect of transition temperatures and as a study of flow properties.

scholarly journals Protective Langmuir–Blodgett coatings based on long-chain fatty acids

2021 ◽  
Vol 57 (4) ◽  
pp. 480-487
Author(s):  
V. M. Akulova ◽  
A. E. Salamianski ◽  
G. B. Melnikova ◽  
D. A. Nekrashevich ◽  
Yu. V. Sinkevich ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Wear Resistance ◽  
Silicon Surface ◽  
Steel Surface ◽  
Long Chain Fatty Acids ◽  
Langmuir Blodgett ◽  
Tribotechnical Properties ◽  
Monomolecular Films ◽  
The Stability ◽  
Long Chain

The morphology and tribotechnical properties of Langmuir–Blodgett (LB) monolayers and multilayers of some fatty acids, such as nervonic (NA), cerotic (CA) and montanic acids (OCA), was investigated. It was established that the wear resistance of silicon surface coated by LB monolayer of OCA is greater by 11 and 1.3 times in comparison with the LB monomolecular films of NA and CA, respectively. The multilayer of OCA, formed by 140 layers, increases the stability of steel surface by 35 times.

scholarly journals The Effects of Cold Saponification on the Unsaponified Fatty Acid Composition and Sensory Perception of Commercial Natural Herbal Soaps

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2356 ◽  
Author(s):  
Natalia Prieto Vidal ◽  
Oludoyin Adeseun Adigun ◽  
Thu Pham ◽  
Abira Mumtaz ◽  
Charles Manful ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Principal Component ◽  
Sensory Perception ◽  
The Other ◽  
Metal Salts ◽  
Rosemary Extract ◽  
Strong Base ◽  
Natural Plant ◽  
Cold Saponification

Saponification is the process in which triglycerides are combined with a strong base to form fatty acid metal salts during the soap-making process. The distribution of unsaturated and saturated fatty acid determines the hardness, aroma, cleansing, lather, and moisturizing abilities of soaps. Plant extracts, such as rosemary, vegetable, and essential oils are frequently added to soaps to enhance quality and sensory appeal. Three natural soaps were formulated using cold saponification to produce a base or control bar (BB), hibiscus rosehip bar (H), and a forest grove bar (FG). Rosemary extract (R) or essential oil (A) blends were added as additives to each formulation prior to curing to evaluate the effects of natural plant additives on the lipid composition and sensory characteristics of these natural herbal soaps. A total of seven natural soaps, three without additives (BB, H, FG) and four with additives (BBR, HA, FGR, FGA), were manufactured and studied. The majority (86–99%) of the polyunsaturated fatty acids (5.0–7.0 µg/mg) remained unsaponified in the manufactured natural soaps regardless of feedstock used. Principal component analysis (PCA) analyses showed the unsaponifiable fatty acids were different in the hibiscus bar compared to the other bars. There was a very strong correlation between the content of unsaponified C18:3n3 and C18:1n9 in all natural soaps. These results indicate that unsaponified fatty acids are important contributors to the quality and overall sensory perception and preference of natural herbal soaps following manufacturing by cold saponification.

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