首页|Self-dispersed molybdenum disulfide quantum dot/graphene crumpled ball as efficient high temperature lubricant additive

Self-dispersed molybdenum disulfide quantum dot/graphene crumpled ball as efficient high temperature lubricant additive

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Inorganic nanoparticles have been proved as powerful lubricant additives at elevated temperature.However,the tribological properties are inevitably impaired due to poor dispersion and insufficient high temperature resistance of organic matter modified nanoparticles.Here,we prepare a self-dispersed molybdenum disulfide quantum dot/graphene crumpled ball(MGCB)comprising molybdenum disulfide quantum dot uniformly interspersed on the wrinkled graphene ball.The crumpled ball composite possesses excellent dispersity in polyalkylene glycol base oil without depending on surface modifiers.Compared with the conventional phosphate esters lubricant,our results indicate MGCB could vastly improve the lubrication performance of polyalkylene glycol with an extremely low concentration(0.05 wt%)at elevated temperature(150 ℃),showing a friction reduction of 47%and a wear reduction of 30%compared with the conventional phosphate esters lubricant(tricresyl phosphate,TCP).This is because crumpled ball potentiates synergistic lubrication effect within the boundary lubrication.Overall,we envision our designed self-dispersed MGCB has significant potential in tribological application at elevated temperature.

self-dispersedcrumpled ballgraphenemolybdenum disulfide quantum dothigh temperaturetribological properties

Guiru DU、Yujuan ZHANG、Shuguang FAN、Ningning SONG、Shengmao ZHANG、Pingyu ZHANG

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Engineering Research Center for Nanomaterials,Henan University,Kaifeng 475004,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Technologies R&D Program of Henan Province

5210518052305189212102210125

2024

10.1007/s40544-023-0853-4

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CSTPCDEI
ISSN：2223-7690
年,卷(期)：2024.12(8)
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