Results 21 to 30 of about 18,640 (151)

Assessment of the Lubricity of Grease‐Sealing Rotary Shaft Seals Based on Grease Properties

Chemical Engineering &Technology, Volume 46, Issue 1, Page 53-60, January 2023., 2023
Grease‐lubricated rotary shaft sealing systems have an increased risk of starved lubrication. For this work, the lubricity of 23 greases was first evaluated and then correlated with grease properties. The results show which properties correlate with the lubricity of the greases and how the lubricity of the grease can be predicted on the basis of short ...
Susanne Hahn, Simon Feldmeth, Frank Bauer   +2 more
wiley   +1 more source

Exploration of Tunnel Lining Falling Block Remediation Using Polyurea Material

Mathematical Problems in Engineering, Volume 2023, Issue 1, 2023., 2023
Tunnel lining falling blocks can cause great threats to traffic safety, resulting in traffic interruptions or speed limits and endangering operational safety. Traditional lining disease remediation measures have low efficiency and high costs and are time consuming.
Changyu Yang, Xun Yuan, Fang Wang, Yong Zhu, Ang Chen, Jieyuan Zheng, Yi Yang, Hui Wang, Jijun Guo, Fuqiang Ren   +9 more
wiley   +1 more source

Advances in lubricated polydimethylsiloxane surfaces for polyurethane foam molding

Journal of Applied Polymer Science, Volume 139, Issue 42, November 10, 2022., 2022
Abstract Adhesion problems are currently a challenge in the manufacture of molded polyurethane (PUR) foam products. Here, a novel solution has been proposed by infusing a polydimethylsiloxane (PDMS) matrix with a liquid lubricant to obtain slippery liquid‐infused porous surfaces (SLIPS).
Guillermo Guerrero‐Vaca, Óscar Rodríguez‐Alabanda, Pablo Francisco Ibáñez‐Ibáñez, Miguel Ángel Rodríguez‐Valverde   +3 more
wiley   +1 more source

Closing the Carbon Loop in the Circular Plastics Economy

Macromolecular Rapid Communications, Volume 43, Issue 13, July 2022., 2022
Both climate change mitigation and the taming of the plastic waste flood prompt challenges of creating a zero‐waste, carbon‐neutral circular plastics economy. While reuse and mechanical recycling revive plastic wastes, molecular recycling exploits plastic waste and CO2 as renewable carbon resources to give plastics a new life.
Carl G. Schirmeister, Rolf Mülhaupt
wiley   +1 more source

State-of-the-Art, Insights, and Perspectives for MOFs-Nanocomposites and MOF-Derived (Nano)Materials. [PDF]

Adv Mater
Different approaches to MOF‐NP composite formation, such as ship‐in‐a‐bottle, bottle‐around‐the‐ship and in situ one‐step synthesis, are used. Owing to synergistic effects, the advantageous features of the components of the composites are beneficially combined, and their individual drawbacks are mitigated.
Mourdikoudis S, Dutta S, Kamal S, Gómez-Graña S, Pastoriza-Santos I, Wuttke S, Polavarapu L.   +6 more
europepmc   +2 more sources

Transposition from a batch to a continuous process for microencapsulation by interfacial polycondensation [PDF]

, 2012
A novel continuous process is proposed and investigated to produce microcapsules by interfacial polycondensation. Polymeric microcapsules are obtained via a two-step process including an initial emulsification of two immiscible fluids in static mixers ...
Cabassud, Michel, Anxionnaz-Minvielle, Zoé, Theron, Félicie, Le Sauze, Nathalie   +3 more
core   +1 more source

Modeling impact of grease mechanical ageing on bleed and permeability in rolling bearings [PDF]

, 2022
The evolution of the film thickness in a grease lubricated rolling bearings is given by a continuous process of loss and replenishment of oil in the rolling track.
Lugt, Piet M., Ende, Dirk van den, Akchurin, Aydar   +2 more
core   +2 more sources

USING OF ESTERS AS DISPERSION MEDIUM OF POLYUREA PLASTIC GREASES

IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA, 2019
This article presents first results of the investigated physico-chemical and operational parameters of composition greases obtained with the use of esters of different nature as a dispersion medium and the polyurea as a thickening agent, including the addition of nanocellulose. The choice of the ester base for the production of greases is possible due,
Oleg P. Parenago, Olga V. Popova, Ravilya Z. Safieva, Vladimir A. Vinokurov, Sabina Z. Shumakaeva, Anastasiya Yu. Kilyakova, Boris P. Tonkonogov   +6 more
openaire   +2 more sources

An Overview of Methods for Blast Load Testing and Devices for Pressure Measurement

Advances in Civil Engineering, Volume 2018, Issue 1, 2018., 2018
A brief review of experimental methods for testing blast effects on structures is presented. Methods are classified in four groups: field tests, shock tubes, pendulum systems, and new techniques (blast simulator). Description of each method is given together with overall specification of possible instruments used in each test.
H. Draganić, D. Varevac, S. Lukić, Xihong Zhang   +3 more
wiley   +1 more source

Analysis of Dynamic Characteristics of Grease‐Lubricated Tapered Roller Bearings

Shock and Vibration, Volume 2018, Issue 1, 2018., 2018
Tapered roller bearings (TRBs) are applied extensively in the field of high‐speed trains, machine tools, automobiles, etc. The motion prediction of main components of TRBs under grease lubrication will be beneficial to the design of bearings and the selection of lubricating grease.
Zheng-Hai Wu, Ying-Qiang Xu, Si-Er Deng, Miguel Neves   +3 more
wiley   +1 more source