Results 31 to 40 of about 18,640 (151)

Tribological Properties of Alkylphenyl Diphosphates as High-Performance Antiwear Additive in Lithium Complex Grease and Polyurea Grease for Steel/Steel Contacts at Elevated Temperature

, 2016
The alkylphenyl diphosphates pentaerythritol tetrakis­(diphenyl phosphate) (PDP) and trimethylolpropane tris­(diphenyl phosphate) (TDP) were evaluated as the antiwear additives in lithium complex grease and polyurea grease at 200 °C.
Junming Liu (1424110), Xiaobo Wang (652710), Qin Zhao (9559), Xinhu Wu (487573), Gaiqing Zhao (1823350)   +4 more
core   +1 more source

From Plasma Chemistry to Adhesion Strength: Mechanical Characterization of Pure Versus Mixed Aminosilane Films for Bonding Polyurea to Aluminum

Plasma Processes and Polymers, Volume 23, Issue 6, June 2026.
Plasma‐polymerized aminosilane films act as effective primers for bonding polyurea adhesives to aluminum. While pure APTES quadruples joint strength, co‐polymerization with silazanes or other monomers surprisingly degrades adhesion. This reveals a shift in the governing mechanism for adhesion: once a threshold of reactive surface amines is available ...
Thomas D. Michl, Alain Schwegler, Katerina Zvolska, Michael Grob, Philippe Keller, Raphael Schaller, Heiko Jung, Marcel Fischer, Philipp Frei, Erik Roos, Klaus Kresser, Yaser Hamedi, Dhia Ben Salem, Sonja Neuhaus   +13 more
wiley   +1 more source

Tribochemistry and EP Activity Assessment of Mo‐S Complexes in Lithium‐Base Greases

Advances in Tribology, Volume 2008, Issue 1, 2008., 2008
The blends of bis(1,5‐diaryl‐2,4‐dithiomalonamido)dioxomolybdenum(VI) complexes in lithium‐base grease are evaluated for their extreme pressure activity in a “four‐ball test” using 12.7 mm diameter alloy steel ball specimen. The additive, bis(1,5‐di‐p‐methoxyphenyl‐2,4‐dithiomalonamido)dioxomolybdenum(VI) and bis(1,5‐di‐p‐chloro‐phenyl‐2,4 ...
Tarunendr Singh, Si-Wei Zhang
wiley   +1 more source

Interface‐Engineered Graphene‐Coated Titanium Dioxide Nanoparticles for High‐Performance Grease Lubrication

Advanced Materials Interfaces, Volume 13, Issue 3, 3 February 2026.
Graphene‐coated TiO2 core–shell nanoparticles are introduced as multifunctional additives for lithium grease, yielding an 85.7% reduction in wear rate, a 22% decrease in operating temperature, and improved film retention under mixed lubrication.
Ethan Stefan‐Henningsen, Amirkianoosh Kiani   +1 more
wiley   +1 more source

Advanced Multifunctional Oil Structurants for Sustainable Lubricants Engineered by Electrospinning Lignin/Cellulose Acetate Butyrate Nanofibers and TiO2 Atomic Layer Deposition

Small Structures, Volume 6, Issue 9, September 2025.
This work investigates the potential of electrospun nanofibers derived from kraft lignin and cellulose acetate–butyrate as structuring agents for vegetable oils and their modification with TiO2 by means of atomic layer deposition to impart remarkably tribological properties, featuring a new generation of efficient, multifunctional and eco‐friendly ...
José F. Rubio‐Valle, Eduardo Martínez‐Guerra, Margarita Sánchez‐Domínguez, Elisa Vázquez‐Lepe, Ciro Rodríguez, Concepción Valencia, José E. Martín‐Alfonso, José M. Franco   +7 more
wiley   +1 more source

Current carrying tribological properties of multi arc ion plated titanium nitride doped silver coating

Materials Research Express
Sliding electrical contact materials play a crucial role in the transmission and conversion of electrical energy, but due to various factors such as force, electricity, and heat, the interface exhibits complex wear behavior.
Wu Hao, Yanqiu Xia, Zhang Yi
doaj   +1 more source

Synthesis of New Silylated and N−Si−N bridged Urea Derivatives from Aminosilanes and Diisocyanates

Chemistry – An Asian Journal, Volume 19, Issue 23, December 2, 2024.
Urea derivatives were obtained by insertion of diisocyanates into aminosilanes of the types Me3SiNRR′ and Me2Si(NRR′)2. Interesting differences in N‐Si connectivities are caused by steric and electronic effects of the reactants and migration of ‐SiMe3 and ‐(SiMe2)‐ moieties. Abstract Urea derivatives of the general motifs R1(N(SiMe3)C(O)NR2R3)2 and [R1(
Marlene K. Baumhardt, Sandra Schwarzer, Jörg Wagler, Steven Knerr, Edwin Kroke   +4 more
wiley   +1 more source

Tribological Performance Comparison of Lubricating Greases for Electric Vehicle Bearings

Lubricants
EV motors and machine elements operate at higher speeds, generate significant heat and noise (vibration), and subject lubricants (bearings) to multiple degrading factors, requiring thermal stability, wear protection, mitigating wear mechanisms like ...
Deepika Shekhawat, Ayush Jain, Nitesh Vashishtha, Arendra Pal Singh, Rahul Kumar   +4 more
doaj   +1 more source

3D printing of hybrid solid–liquid structures

Polymer International, Volume 73, Issue 10, Page 793-802, October 2024.
A summary of 3D printing methods used to produce hybrid solid–liquid composites from single or multiple feedstocks. Abstract 3D printing is a versatile technology for creating objects with custom geometries and compositions and is increasingly employed for fabricating hybrid solid–liquid composites (SLCs).
Chia‐Min Hsieh, Ciera E. Cipriani, Emily B. Pentzer   +2 more
wiley   +1 more source

Room Temperature Production of Polyurea-Based Lubricants: Using L-Serine Derivatives, 1,5 Pentamethylene Diisocyanate, and a Planetary Ball Mill

Lubricants
In this work, we produced a new polyurea (PU)-based thickener based on serine derivatives (ethanolamine or L-Serine ethyl ester) and 1,5 pentamethylene diisocyanate (PDI), using castor oil as base oil and methylene diphenyl diisocyanate (MDI) as a ...
Lara Frentrup, Tim Stuck, Ralf Weberskirch   +2 more
doaj   +1 more source