Study of friction and wear of thermoplastic vulcanizates: the correlation with abraded surfaces topology

6th International Conference on Fracture Fatigue and Wear

Harea, E.^1 ; Stoek, R.^1,2 ; Machovský, M.^1

Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, tída Tomáe Bati 5678, Zlín

760 01, Czech Republic^1

PRL Polymer Research Lab., Nad Ovírnou 3685, Zlín

760 01, Czech Republic^2

关键词: Coefficient of frictions;    Friction and wear;    Friction and wear properties;    Friction coefficients;    Rubber material;    Styrene butadiene rubber;    Thermoplastic matrices;    Thermoplastic vulcanizates;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/843/1/012070/pdf
DOI  :  10.1088/1742-6596/843/1/012070

来源: IOP

【 摘 要 】

The work was focused on the study of friction and wear properties of thermoplastic vulcanizates (TPV) based on polypropylene (PP), natural rubber (NR) and styrene butadiene rubber (SBR) compounds containing all common additives and curatives using ball-on-flat method. Pure materials and binary TPV blends of PP/NR, as well those of PP/SBR with the compositions 95/5, 75/25 and 50/50 (in weight %) were compounded and analysed. It is very well known that the coefficient of friction (COF), as well as wear values of pure thermoplastic matrix are significantly lower than those for pure rubber. Thus, it was found that the friction coefficient and wear of TPVs significantly increased in accordance with increased content of rubber material. Surprisingly, NR compared with SBR of similar concentrations in PP matrix, considerably affected wear of samples and the friction coefficient remained almost unaffected. Finally the topology of abraded surfaces were examined by using scanning electron microscopy (SEM) in order to understand the relationship between the COF, wear process and the composition of TPVs.