Super-lubricity water lubricating additive, super-lubricity water lubricant, preparation method and application

US11685877B2 · kind B2 · utility

Assignee

• QINGDAO UNIVERSITY OF TECHNOLOGY · CN

Inventors

• Qinglun Che · Qingdao, CN
• Jianjun Zhang · Nanhu, CN
• Sen Liang · Qingdao, CN
• Ning Cui · Beijing, CN
• Binjiang Lv · Qingdao, CN
• Yang Xu · Wenhe, CN
• Xinghua Ma · Qingdao, CN

Key dates

• Filing date: Jul 21, 2020
• Grant date: Jun 27, 2023
• Expiry date: Nov 26, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2050/025
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A super-lubricity water lubricating additive, a super-lubricity water lubricant, a preparation method and application, wherein the additive is of a hollow spherical shell structure which includes at least one layer of spherical shell; the spherical shell sequentially includes a first polydopamine layer, a nanoparticle layer, a second polydopamine layer and an oxidized graphene layer from inside to outside, or a first polydopamine layer, a nanoparticle layer, a second polydopamine layer, a graphene layer and a third polydopamine layer from inside to outside; and nanoparticles of the nanoparticle layer are nano diamond, nano molybdenum disulfide or nano tungsten disulfide. The additive is prepared into a uniform aqueous solution to obtain the super-lubricity water lubricant. The additive can be easily adsorbed on a dual surface, and the nanoparticles released in a friction process cooperate with spherical oxidized graphene or graphene to form rolling friction so as to reduce frictional abrasion.