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Investigation of Tribological Properties of Vegetable Oil Based Hard Wax Alternatives in Comparison with Carnauba Wax
Author(s) -
Fei Tao,
Ren Kangzi,
Wang Tong
Publication year - 2020
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.201900437
Subject(s) - carnauba wax , wax , tribology , materials science , lubricant , polyamide , composite material , lubrication
The authors investigate the structure‐surface property relationship of different amide‐based waxes, which can be beneficial for designing new anti‐friction materials. Five different amide‐based samples (derived from soybean oil) and a carnauba wax sample are tested. The effect of normal load, sliding velocity, and environmental temperature on the coefficient of friction (COF) and wear loss is investigated. COF and wear loss of different materials respond to these factors very differently. The long carbon chain and high hardness of polyamide and Amidecoat result in low COF and less wear loss. The lower glass transition point of Amidecoat results in higher COF and more wear loss when tested at a high environmental temperature. Crystal morphology and crystallinity of these materials are found to have no apparent correlation with their friction and wear behaviors. Practical Applications : It is shown in this research that the soybean oil based polyamide and Amidecoat have comparable friction and wear behavior as the high‐priced carnauba wax. The Amidecoat and polyamide can be suitable substitutes for carnauba wax for anti‐friction purposes, and this study is expected to provide some practical guidance for the application of amide‐based materials (derived from soybean oil) in the tribological field. The work should be a great interest in the coating and lubricant industries that are looking for green and renewable alternatives for the expensive natural waxes with limited availability.