Tribological Properties of Propylene Glycol Random Copolyether Aqueous Solutions

doi:10.3901/JME.2018.01.144

Abstract

Abstract: In this research, Propylene glycol random copolyether (PPE) is selected as a water-based lubricant so as to study the tribological properties. Firstly, anti-friction/anti-wear, extreme pressure and stability performances are studied with the help of MRS-10 four-ball tribometry. Results indicate that PPE aqueous solutions have good characteristics in friction-reduction, wear-mitigation and stability, and the non-seizure value (P_B) of the PPE aqueous solutions (10%) is between 755 N and 784 N, which is higher than traditional lubricant additives. Then, film-forming property is analyzed by nano scale film thickness measuring tester (NGY-6). Results show that PPE aqueous solutions have good film-forming property, and the inclusion of PPE further improves its film-forming ability over pure water. Moreover, the film thickness rises up with the concentration in certain concentration range of PPE. Overall, PPE is a green water-based lubricant additive with good engineering applications.

Key words: film-forming ability, propylene glycol random copolyether, tribological properties, water-based lubricant

CLC Number:

TH117

GU Jun, ZHANG Chaohui, HUANG Baocheng, WANG Lei, LI Kuankuan. Tribological Properties of Propylene Glycol Random Copolyether Aqueous Solutions[J]. Journal of Mechanical Engineering, 2018, 54(1): 144-149.

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