Effect of Nano SiO2 as an Additive in Cotton Seed Oil

Bajaj, Dipak. S.; Wakchaure, Vishnu D.; Jahagirdar, Ramchandra S.; Bajaj, Manali

doi:10.1088/1757-899x/1004/1/012016

Cited by 1 publication

(2 citation statements)

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“…30,31 Bajaj et al investigated the lubricating performance of nanosilica as a lubricant additive and found that the cottonseed oil with 2% of SiO 2 had a remarkable lubricating performance. 32 Jiao et al synthesized SiO 2 -based Al 2 O 3 /SiO 2 composite nanoparticles via a hydrothermal method; the asobtained SiO 2 composite nanoparticles can effectively decrease the COF of mineral oil as nanoadditives. 33 Herein, we report a new strategy via the copolymerization of a nitrogen source (dopamine) and a SiO 2 source (tetraethyl orthosilicate) on hyper-cross-linked polystyrene nanospheres and then carbonization to obtain silica-coated N-doped mesoporous carbon nanospheres (SiO 2 @N-MCNs), which can be well dispersed in base oil 500SN.…”

Section: Introductionmentioning

confidence: 99%

“…Silica (SiO 2 ) nanoparticles are one of the best candidates for tribology applications due to their good physicochemical properties and wide applications in commercial lubricant additives. , Bajaj et al investigated the lubricating performance of nanosilica as a lubricant additive and found that the cottonseed oil with 2% of SiO 2 had a remarkable lubricating performance . Jiao et al synthesized SiO 2 -based Al 2 O 3 /SiO 2 composite nanoparticles via a hydrothermal method; the as-obtained SiO 2 composite nanoparticles can effectively decrease the COF of mineral oil as nanoadditives .…”

Section: Introductionmentioning

confidence: 99%

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Silica-Coated N-Doped Porous Carbon Nanospheres as Antiwear and Friction-Reduction Lubricant Additives

Bai,

Wang,

Xue

et al. 2023

ACS Appl. Nano Mater.

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In this study, silica-coated nitrogen-doped porous carbon nanospheres (SiO 2 @N-MCNs) were successfully prepared in a facile way. Polydopamine was first grafted onto hyper-crosslinked polystyrene nanospheres via oxidative polymerization. Meanwhile, silica could be embedded in a polydopamine layer by the hydrolyzation of tetraethyl orthosilicate. Eventually, SiO 2 @N-MCNs were obtained after carbonization. The as-prepared SiO 2 @ N-MCNs exhibited favorable dispersion stability and improved antiwear and friction-reducing properties when used as lubricant additives. The average friction coefficient (COF) of base oil was reduced to 0.105 from 0.162 after adding 2.0 wt % SiO 2 @N-MCNs, the corresponding wear volume was reduced by 97.1%, and particularly the load capacity was increased to 550 N. The excellent antifriction and antiwear properties are attributed to the formation of a successive protective film, including iron oxides, carbonitride, carbon film, and the repairing and filling effect of SiO

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