Abstract
A new lubricating coating with functionalized graphene oxide (fGO) consisting of graphene oxide (GO) with different oxidation degrees, n-octylamine basal plane functionalized GO (bGO), and edge functionalized GO (eGO) was developed with or without 3-aminopropyltrimethoxysilane (APTMS) to reduce friction in macroscale contact with water. The optimal preparation condition of the coating was obtained by the single factor evaluation of a series of factors (20 % APTMS aqueous solution, 12 h immersion time, 0.05 mg/mL GO aqueous solution, and 100 °C curing temperature). The effect of the oxidation degree and functionalization of GO on the friction-reducing and anti-wear behavior of the coating was explored. The coatings with a higher GO oxidation degree exhibited better friction-reduction and anti-wear performance. In addition, the friction-reducing capability of the APTMS-bGO coating was greater than that of APTMS-eGO.
Original language | English |
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Article number | 126153 |
Journal | Colloids and surfaces A: Physicochemical and engineering aspects |
Volume | 616 |
Early online date | 17 Jan 2021 |
DOIs | |
Publication status | Published - 5 May 2021 |
Keywords
- 2022 OA procedure
- Functionalized graphene oxide
- Oxidation
- Tribological properties
- Coating