Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed ...Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed a method to develop water based lubricant:employing polyalkylene glycol solution as base stock to improve EHL film forming capability and using organic phosphate ester(DPZ)as anti-wear additive to improve wear resistance property.The lubricating properties of the mixed solutions,including load carrying capability,wear resistance property,friction reduction property,EHL film forming behavior,were investigated.The experimental results indicate that the mixed solution presents excellent lubricating properties,which make it a promising candidate in developing water based lubricants.展开更多
Nitrato\|terminated polyalkylene glycols were synthesized from nitrating glycols with nitric acid and sulfuric acid in methylene chloride. Then azido\|terminated polyalkylene glycols were prepared by a nucleophilic re...Nitrato\|terminated polyalkylene glycols were synthesized from nitrating glycols with nitric acid and sulfuric acid in methylene chloride. Then azido\|terminated polyalkylene glycols were prepared by a nucleophilic reaction of the nitrato\|terminated polyalkylene glycols with sodium azide in different phase transfer catalytic conditions. All synthesized polymers were characterized by \{\}\+1H\|MNR, FT\|IR, GPC and elemental analysis.展开更多
基金supported by the National Key Basic Research Program of China(Grant No.2013CB934200)the National Natural Science Foundation of China(Grant Nos.51075227,51222507)
文摘Till now,water based lubricants,especially aqueous solutions,have not been employed in the elastohydrodynamic lubrication(EHL)due to their poor film forming capability or low wear resistance.In this paper,we proposed a method to develop water based lubricant:employing polyalkylene glycol solution as base stock to improve EHL film forming capability and using organic phosphate ester(DPZ)as anti-wear additive to improve wear resistance property.The lubricating properties of the mixed solutions,including load carrying capability,wear resistance property,friction reduction property,EHL film forming behavior,were investigated.The experimental results indicate that the mixed solution presents excellent lubricating properties,which make it a promising candidate in developing water based lubricants.
文摘Nitrato\|terminated polyalkylene glycols were synthesized from nitrating glycols with nitric acid and sulfuric acid in methylene chloride. Then azido\|terminated polyalkylene glycols were prepared by a nucleophilic reaction of the nitrato\|terminated polyalkylene glycols with sodium azide in different phase transfer catalytic conditions. All synthesized polymers were characterized by \{\}\+1H\|MNR, FT\|IR, GPC and elemental analysis.
