Results 11 to 20 of about 18,640 (151)
Coatings, 2022 The rheological properties of lithium grease and polyurea grease at different temperatures and consistencies were determined with a rotary rheometer. The plateau moduli of the greases were calculated, and the mechanism of influence of consistency and temperature on the rheological properties of the greases was explained.
Wang, Yanshuang +3 more
openaire +2 more sources
Study on the Properties of Nano-CeO2/Polyurea-Based Gel Grease for Electric Motor Bearings
GelsIn response to the harsh operating conditions of high-speed, high-temperature bearings in new energy vehicle drive motors, this study focuses on enhancing the performance of polyurea-based gel greases through the use of nano-additives.
Han Peng +6 more
doaj +2 more sources
Russian Journal of Applied Chemistry, 2018 The review deals with greases in which organic ureas of various compositions and structures are used as thickeners. The nature of compounds participating in the synthesis of organic ureas and the main types of polyurea thickeners are considered. The physicochemical, tribological, and operation properties of plastic polyurea lubricants are discussed ...
Lyadov A.S. +4 more
core +5 more sources
LubricantsPolyurea grease (PU) is widely used in the lubrication of heavy machinery, but it can still suffer from structural or performance degradation under extreme conditions such as high temperatures and heavy loads. This study successfully synthesized a hybrid
Shukang Nan +9 more
doaj +2 more sources
Polyurea-coated glass-fibre-reinforced laminate under high-speed impact: experimental study
, 2020 One of the promising methods to increase the resistance of polymer-matrix composite materials to impact damage is the use of protective coatings. In this work, the effect of polyurea coating on impact-performance parameters of a woven glass-fibre ...
Konstantinos Baxevanakis (3846046) +8 more
core +7 more sources
The Promise of Solid Lubricants for a Sustainable Future. [PDF]
Adv MaterLubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Grützmacher PG +7 more
europepmc +2 more sources
Applications of Chitosan, an Eco-Friendly Biopolymer in Agricultural Systems, Herbal Products, and Functional Foods: A Review. [PDF]
Food Sci NutrChitosan is highlighted for its industrial applications include food processing and preservation, pharmaceuticals, agriculture systems, and environmental protection. ABSTRACT Chitin, the natural biopolymer of the world next to cellulose, is a modified biodegradable polysaccharide.
Karimlar S +4 more
europepmc +2 more sources
, 2022 Everybody has made use of grease in their daily lives. The word “grease” originates from the early Latin word “crassus,” meaning fat. For our purposes, in this Special Issue, we will be focusing on lubricating grease, for publication in the eponymous ...
core +1 more source
Lubricants, 2021 One commonly used lubricant in rolling bearings is grease, which consists of base oil, thickener and small amounts of additives. Commercial greases are mostly produced from petrochemical base oil and thickener. Recently, the development of base oils from
Seyedmohammad Vafaei +5 more
doaj +1 more source
Structure‐property relationships of waterborne polyurethane (WPU) in aqueous formulations
Journal of Vinyl and Additive Technology, Volume 29, Issue 4, Page 589-606, July 2023., 2023 Abstract This study provides an overview of the rheological properties of aqueous polyurethanes (WPU), as the main component, or as a thickening additive in aqueous formulations. Waterborne polyurethanes (WPU) have been proposed as an environmentally friendly alternative to conventional solvent‐based solutions in a variety of industrial applications ...
Antonella Patti, Domenico Acierno
wiley +1 more source