公开(公告)号：US11685877B2

公开(公告)日：2023-06-27

申请号：US17421219

申请日：2020-07-21

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Qinglun Che ,  Jianjun Zhang ,  Sen Liang ,  Ning Cui ,  Binjiang Lv ,  Yang Xu ,  Xinghua Ma

IPC: C10M173/02 ,  C10M125/02 ,  C10M161/00 ,  C10N20/06 ,  C10N30/06

CPC classification number: C10M173/02 ,  C10M125/02 ,  C10M161/00 ,  C10M2201/02 ,  C10M2201/041 ,  C10M2201/062 ,  C10M2201/066 ,  C10M2217/046 ,  C10N2020/06 ,  C10N2030/06

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.

公开(公告)号：US11768149B2

公开(公告)日：2023-09-26

申请号：US17402243

申请日：2021-08-13

Applicant: QINGDAO UNIVERSITY OF TECHNOLOGY

Inventor： Jianjun Zhang ,  Hewei Lu ,  Qinglun Che ,  Jiahao Zhang ,  Zhaogang Jing ,  Chenglong Liu ,  Feng Guo

IPC: G01N19/02 ,  G01N33/30 ,  G01B5/06

CPC classification number: G01N19/02 ,  G01B5/066 ,  G01N33/30

Abstract: A device measures a frictional force and a film thickness of a lubricating oil film in different surface velocity directions. The device includes an experiment bench. A translation stage is mounted to the experiment bench, and is linearly movable. A main shaft system is mounted to the experiment bench. A glass disc is mounted to the main shaft system and is rotatable. An arcuate guide rail is disposed on the translation stage. A rotary base is mounted to the arcuate guide rail and is movable along the arcuate guide rail. A loading system is mounted to the rotary base. A steel ball of the loading system and the glass disc are movable relative to each other. A rotary bearing in the rotary base is configured to convert a frictional force generated from the relative movement to a pressure allowed to be collected by a pressure sensor on the rotary base.