Kim W.-S.,Nexen Tire Corporation |
Paik H.-J.,Pusan National University |
Bae J.-W.,Korea Institute of Footwear and Leather Technology |
Kim W.,Pusan National University
Journal of Applied Polymer Science | Year: 2011
Polyethyene glycol (PEG) is widely used as a dispersing agent and can also be used to prevent the adsorption of ingredients on the surface of silica. From the XRD results, PEG that was used as the dispersing agent on the SBR/organoclay compound filled with silica and carbon black (CB) was intercalated between the organoclay layer. Additionally, the interactions with the PEG differed depending on whether 3-aminopropyltriethoxysilane (APTES) or N,N-dimethyldodecylamine (DDA) were used as clay modifiers. When PEG was added, the T g of the SBR/silica/APTES-MMT compound increased through the formation of hydrogen bonds between the ether linkages of PEG and the hydroxyl groups of APTES. For the SBR/silica/DDA-MMT compound with PEG, slippage occurred between the silicate, and DDA because of the alkyl chain of DDA. The SBR/silica/APTES-MMT/CB compound with PEG exhibited the highest T g value and the highest bound rubber content, with high modulus values at 100 and 300%. The SBR/silica/DDA-MMT/CB compound had the best properties in terms of the wet skid resistance and the rolling resistance. © 2011 Wiley Periodicals, Inc.
Hwang S.-C.,Dong - A University |
Lee J.-H.,Nexen Tire Corporation |
Lee D.-H.,Korea Railroad Research Institute |
Han S.-H.,Dong - A University |
Lee K.-H.,Dong - A University
Mathematical and Computer Modelling | Year: 2013
This paper presents a contact stress analysis for a pair of mating gears during rotation. Contact stress analyses for spur and helical gears are performed between two gear teeth at different contact positions during rotation. Two examples of spur and helical gears are presented to investigate the respective variations of the contact stress in a pair of mating gears with the contact position. The variation of the contact stress during rotation is compared with the contact stress at the lowest point of single-tooth contact (LPSTC) and the AGMA (American Gear Manufacturers Association) equation for the contact stress. In this study, we can see that the gear design that considers the contact stress in a pair of mating gears is more severe than that of the AGMA standard. © 2011 Elsevier Ltd.
Nexen Tire Corporation | Date: 2012-03-27
Inner tubes for vehicle tires, Tires for land vehicles, Solid tires for vehicle wheels, Tire flaps for protection of inner tube within wheel rim.
Nexen Tire Corporation | Date: 2012-05-29
Inner tubes for pneumatic tires, tires for vehicle wheels, solid tires for vehicle wheels, tire flaps for protection of inner tube within wheel rim.
Nexen Tire Corporation | Date: 2011-11-29
inner tubes for pneumatic tires, tires for vehicles, solid tires for vehicle wheels, mud flaps for vehicle wheels.