Evaluation of apparent Young׳s modulus of the composite polymer layers used as sliding surfaces in hydrodynamic thrust bearings

2016 ◽  
Vol 97 ◽  
pp. 244-252 ◽  
Author(s):  
M. Wodtke ◽  
M. Wasilczuk
Keyword(s):  
Composite Polymer ◽  
Polymer Layers ◽  
Thrust Bearings ◽  
Sliding Surfaces

HYDRODYNAMIC THRUST BEARINGS WITH POLYMER LINING

Tribologia ◽  
2016 ◽  
Vol 268 (4) ◽  
pp. 225-237 ◽  
Author(s):  
Michał WODTKE
Keyword(s):  
Polymeric Materials ◽  
Industrial Applications ◽  
Hydrodynamic Bearings ◽  
Thrust Bearings ◽  
Sliding Surfaces ◽  
Current State ◽  
Tilting Pad ◽  
History Of ◽  
Bearing Design ◽  
Experimental Researches

Polymeric linings of sliding surfaces of the hydrodynamic bearings have been used successfully for over 50 years. Despite of their long history of operation and research, they have not become widespread in industrial applications. This fact may be surprising, considering the conclusions that have been published concerning bearing operation and design. This paper summarizes the current state of the art of the tilting-pad thrust bearings with a polymer lining of pad sliding surfaces. Bearing design and the most commonly used polymeric materials are described. The results of the latest theoretical and experimental researches by both bearing manufacturers and at scientific centres are presented. Observed properties of the bearings with polymer lining were compared to the properties of the bearings covered with Babbitt, which is the most frequently material used as lining for hydrodynamic bearings.

Determination parameters of 3D printing patriotic composite polymer materials based on ABS plasticse

2018 ◽  
Vol 4 (2) ◽  
pp. 85-90
Author(s):  
Y. M. Dovydenko ◽  
N. A. Ivanova ◽  
S. A. Chizhik ◽  
V. E. Agabekov
Keyword(s):  
3D Printing ◽  
Polymer Materials ◽  
Composite Polymer

Electronics of thin wideband polymer layers

2006 ◽  
Vol 176 (12) ◽  
pp. 1249 ◽  
Author(s):  
A.N. Lachinov ◽  
N.V. Vorob'eva
Keyword(s):  
Polymer Layers

Interaction of tungsten in dry sliding against steel under high density electric current

2019 ◽  
pp. 101-109 ◽  
Author(s):  
M. I. Aleutdinova ◽  
V. V. Fadin ◽  
Yu. P. Mironov
Keyword(s):  
Electrical Contact ◽  
Analysis Data ◽  
Dry Sliding ◽  
Sliding Surface ◽  
X Ray ◽  
Sliding Surfaces ◽  
Quenched Steel ◽  
Sliding Electrical Contact ◽  
A Current ◽  
Tungsten Steel

The possibility of creating a wear-resistant dry sliding electrical contact tungsten/steel was studied. It was shown that tungsten caused severe wear of the quenched steel counterbody due to unlimited plastic flow of its surface layer at a current density up to 150 A/cm2 . This indicated the impossibility of achieving satisfactory characteristics of such a contact. Low electrical conductivity and wear resistance of the contact tungsten/steel were presented in comparison with the known high copper/steel contact characteristics under the same conditions. X-ray phase analysis data of the steel sliding surfaces made it possible to state that the cause of the unsatisfactory sliding of tungsten was the absence of the necessary concentration of FeO oxide on the sliding surface of the steel. 

Tribological performance of dimpled thrust bearings with phyllotactic patterns

Wear ◽  
2016 ◽  
Vol 346-347 ◽  
pp. 108-115 ◽  
Author(s):  
Lu Yushan ◽  
Liu Yueming ◽  
Wang Jun ◽  
Liu Hongpeng
Keyword(s):  
Tribological Performance ◽  
Thrust Bearings

scholarly journals Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO2 Nanoparticles for Lithium Metal Batteries

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2468
Author(s):  
Hui Zhan ◽  
Mengjun Wu ◽  
Rui Wang ◽  
Shuohao Wu ◽  
Hao Li ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Specific Capacity ◽  
Sio2 Nanoparticles ◽  
Inorganic Materials ◽  
Solid Polymer Electrolytes ◽  
Lithium Metal ◽  
Composite Polymer ◽  
Composite Electrolyte ◽  
Composite Polymer Electrolytes ◽  
Lithium Metal Batteries

Composite polymer electrolytes (CPEs) incorporate the advantages of solid polymer electrolytes (SPEs) and inorganic solid electrolytes (ISEs), which have shown huge potential in the application of safe lithium-metal batteries (LMBs). Effectively avoiding the agglomeration of inorganic fillers in the polymer matrix during the organic–inorganic mixing process is very important for the properties of the composite electrolyte. Herein, a partial cross-linked PEO-based CPE was prepared by porous vinyl-functionalized silicon (p-V-SiO2) nanoparticles as fillers and poly (ethylene glycol diacrylate) (PEGDA) as cross-linkers. By combining the mechanical rigidity of ceramic fillers and the flexibility of PEO, the as-made electrolyte membranes had excellent mechanical properties. The big special surface area and pore volume of nanoparticles inhibited PEO recrystallization and promoted the dissolution of lithium salt. Chemical bonding improved the interfacial compatibility between organic and inorganic materials and facilitated the homogenization of lithium-ion flow. As a result, the symmetric Li|CPE|Li cells could operate stably over 450 h without a short circuit. All solid Li|LiFePO4 batteries were constructed with this composite electrolyte and showed excellent rate and cycling performances. The first discharge-specific capacity of the assembled battery was 155.1 mA h g−1, and the capacity retention was 91% after operating for 300 cycles at 0.5 C. These results demonstrated that the chemical grafting of porous inorganic materials and cross-linking polymerization can greatly improve the properties of CPEs.

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