Tribological properties of hyperbranched polysiloxane /Ni/ graphene nanoribbon /BMI composites
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1.Zhejiang Hexin New Material Co., Ltd.;2.Zhejiang Hexin Science and Technology Co,Ltd;3.School of College of Chemistry Chemical Engineering,Shaanxi University of Science Technology,Xi′an;4.School of Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry Technology,Shaanxi University of Science Technology,Xi'5.'6.an

Clc Number:

TQ325.12;TB33;TE624.83

Fund Project:

the China Postdoctoral Science Foundation (No. 2021M692861); the scientific research program was funded by the Shaanxi Provincial Education Department (No. 21JY004); the Open Foundation of Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology (No. KFKT2022-14) and Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science and Technology (No. KFKT2022-14)

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    Abstract:

    In order to improve the compatibility of graphene with bismaleimide (BMI) resin matrix and to enable the rapid formation of high-quality self-lubricating transfer films during friction. This paper prepared HBPSi/Ni/GNRs com-posite particles by comodifying graphene nanoribbons (GNRs) with hyperbranched polysiloxane (HBPSi) and Ni nanoparticles, and introduced them into BMI resin to prepare HBPSi/Ni/GNRs/BMI composites, and introduced them into BMI resin to prepare HBPSi/Ni/GNRs/BMI composites. FT-IR, SEM, TEM, tribological wear testing ma-chine and molecular dynamics simulation were used to investigate the effects of the structure, morphology and in-troduction of the composite particles and the tribological properties of the composites, and the tribological wear mechanism was investigated. The results showed that HBPSi and Ni nanoparticles were successfully loaded onto the surface of GNRs. HBPSi/Ni/GNRs were able to significantly improve the tribological properties of their BMI composites compared to GNRs. When the filler addition is 0.6 wt%, the friction coefficients and volume wear rate of the HBPSi/Ni/GNRs composites reach their lowest values of 0.18 and 4.5×10-6 mm3/(N.m), respectively. In ad-dition, the molecular dynamics results indicate that the strong interfacial interaction between HBPSi/Ni/GNRs and BMI is the key leading to the enhanced shear resistance of their composites.

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History
  • Received:April 12,2023
  • Revised:June 26,2023
  • Adopted:July 03,2023
  • Online: March 07,2024
  • Published:
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