Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants
The tribology properties of TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants were investigated for an automotive air-conditioning system with an electrically-driven compressor (EDC). A two-step preparation method was used in dispersing TiO2 and SiO2 nanoparticles into Polyol-ester (POE)-based lub...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI
2023
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| Online Access: | http://umpir.ump.edu.my/id/eprint/38232/ http://umpir.ump.edu.my/id/eprint/38232/1/Tribology%20performance%20of%20polyol-ester%20based%20TiO2%2C%20SiO2%2C%20and%20their%20hybrid%20nanolubricants.pdf |
| _version_ | 1848825456253468672 |
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| author | Hamisa, Abdul Hamid Wan Hamzah, Wan Azmi Mohd Farid, Ismail Rosminazuin, Ab Rahim Ali, Hafiz Muhammad |
| author_facet | Hamisa, Abdul Hamid Wan Hamzah, Wan Azmi Mohd Farid, Ismail Rosminazuin, Ab Rahim Ali, Hafiz Muhammad |
| author_sort | Hamisa, Abdul Hamid |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The tribology properties of TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants were investigated for an automotive air-conditioning system with an electrically-driven compressor (EDC). A two-step preparation method was used in dispersing TiO2 and SiO2 nanoparticles into Polyol-ester (POE)-based lubricant at different volume concentrations of 0.01 to 0.1%. The coefficient of friction (COF) and wear scar diameter (WSD) were investigated using a Koehler four-ball tribo tester and microscopes. For the TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants, respectively, the lowest COFs with maximum reduction were attained at 37.5%, 33.5% and 31.6% each at volume concentrations of 0.05%, 0.01% and 0.03%. The highest WSD reduction for the TiO2/POE and SiO2/POE mono nanolubricants were attained at 12.5% and 26.4%, respectively, at the same volume concentration of 0.01%. Meanwhile, the maximum reduction of WSD for the TiO2-SiO2/POE hybrid nanolubricant was reached at 12.4% at 0.03% volume concentration. As a conclusion, mono and hybrid nanolubricants with volume concentrations of less than 0.05% are suggested for use in air-conditioning systems with EDC because of their outstanding tribology performances. Further performance investigation of nanolubricants in the air-conditioning system is required to extend the present work. |
| first_indexed | 2025-11-15T03:29:13Z |
| format | Article |
| id | ump-38232 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:29:13Z |
| publishDate | 2023 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-382322023-09-05T06:53:16Z http://umpir.ump.edu.my/id/eprint/38232/ Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants Hamisa, Abdul Hamid Wan Hamzah, Wan Azmi Mohd Farid, Ismail Rosminazuin, Ab Rahim Ali, Hafiz Muhammad T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics The tribology properties of TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants were investigated for an automotive air-conditioning system with an electrically-driven compressor (EDC). A two-step preparation method was used in dispersing TiO2 and SiO2 nanoparticles into Polyol-ester (POE)-based lubricant at different volume concentrations of 0.01 to 0.1%. The coefficient of friction (COF) and wear scar diameter (WSD) were investigated using a Koehler four-ball tribo tester and microscopes. For the TiO2/POE, SiO2/POE and TiO2-SiO2/POE nanolubricants, respectively, the lowest COFs with maximum reduction were attained at 37.5%, 33.5% and 31.6% each at volume concentrations of 0.05%, 0.01% and 0.03%. The highest WSD reduction for the TiO2/POE and SiO2/POE mono nanolubricants were attained at 12.5% and 26.4%, respectively, at the same volume concentration of 0.01%. Meanwhile, the maximum reduction of WSD for the TiO2-SiO2/POE hybrid nanolubricant was reached at 12.4% at 0.03% volume concentration. As a conclusion, mono and hybrid nanolubricants with volume concentrations of less than 0.05% are suggested for use in air-conditioning systems with EDC because of their outstanding tribology performances. Further performance investigation of nanolubricants in the air-conditioning system is required to extend the present work. MDPI 2023-01 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/38232/1/Tribology%20performance%20of%20polyol-ester%20based%20TiO2%2C%20SiO2%2C%20and%20their%20hybrid%20nanolubricants.pdf Hamisa, Abdul Hamid and Wan Hamzah, Wan Azmi and Mohd Farid, Ismail and Rosminazuin, Ab Rahim and Ali, Hafiz Muhammad (2023) Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants. Lubricants, 11 (18). pp. 1-20. ISSN 2075-4442 (Online). (Published) https://doi.org/10.3390/lubricants11010018 https://doi.org/10.3390/lubricants11010018 |
| spellingShingle | T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics Hamisa, Abdul Hamid Wan Hamzah, Wan Azmi Mohd Farid, Ismail Rosminazuin, Ab Rahim Ali, Hafiz Muhammad Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants |
| title | Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants |
| title_full | Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants |
| title_fullStr | Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants |
| title_full_unstemmed | Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants |
| title_short | Tribology performance of polyol-ester based TiO2, SiO2 and their hybrid nanolubricants |
| title_sort | tribology performance of polyol-ester based tio2, sio2 and their hybrid nanolubricants |
| topic | T Technology (General) TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics |
| url | http://umpir.ump.edu.my/id/eprint/38232/ http://umpir.ump.edu.my/id/eprint/38232/ http://umpir.ump.edu.my/id/eprint/38232/ http://umpir.ump.edu.my/id/eprint/38232/1/Tribology%20performance%20of%20polyol-ester%20based%20TiO2%2C%20SiO2%2C%20and%20their%20hybrid%20nanolubricants.pdf |