Abstract
Dry friction and wear properties of natural rubber (NR), containing multi-walled carbon nanotubes (MWCNT) and carbon black (CB), were investigated. Natural rubber (NR)-based composites containing all common additives and curatives, and a fixed amount (30 phr—parts per 100 rubber by weight) of hybrid fillers (MWCNTx + CB30−x) were prepared by simple mixing procedure and tested. The main goal was to study the behaviours of composites at different tribological testing conditions, such as friction speed and normal load. It was found that with an increase of concentration of MWCNT from x = 0 phr to x = 5 phr in studied composites, there was a decrease in the coefficient of friction (COF) with no significant change in wear in the framework of each used combination of testing parameters. Generally, higher friction speed at certain normal force led to the increase of COF of all the samples and wear reflected deliberate value fluctuation. Also, it was established that considerable growth of wear and unexpected reducing of friction coefficient ensued from increasing of applied load for every fixed sliding speed.
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This article was written with the support of Operational Program Research and Development for Innovations co-funded by the European Regional Development Fund and national budget of the Czech Republic, within the framework of the project CPS—strengthening research capacity (reg. number: CZ.1.05/2.1.00/19.0409) as well supported by the Ministry of Education, Youth and Sports of the Czech Republic—Program NPU I (LO1504).
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Harea, E., Stoček, R., Storozhuk, L. et al. Study of tribological properties of natural rubber containing carbon nanotubes and carbon black as hybrid fillers. Appl Nanosci 9, 899–906 (2019). https://doi.org/10.1007/s13204-018-0797-6
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DOI: https://doi.org/10.1007/s13204-018-0797-6