TY - JOUR
T1 - Design of wear-resistant UHMWPE-based composites loaded with wollastonite microfibers treated with various silane coupling agents
AU - Panin, Sergey V.
AU - Huang, Qitao
AU - Alexenko, Vladislav O.
AU - Buslovich, Dmitry G.
AU - Kornienko, Lyudmila A.
AU - Berto, Filippo
AU - Bochkareva, Svetlana A.
AU - Panov, Iliya L.
AU - Ryabova, Natalya V.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - The tribomechanical properties of the wear-resistant ultrahigh molecular weight polyethylene (UHMWPE)-based composites loaded with wollastonite microfibres silanized with various coupling agents ("KH-550", "Penta-1006", and "OTS") were investigated. It was demonstrated that the mechanical properties of UHMWPE-based composites filled with various amounts of wollastonite (7-23 wt. %) increased by 1.3 times (yield strength) and by 1.8 times (elastic modulus), while the wollastonite silanization further improved yield strength by 9% in some cases. It was demonstrated that the composite loaded with 23 wt. % wollastonite silanized with the "KH-550" coupling agent possessed the maximum wear resistance under "moderate" conditions of tribological loading. Under "severe" conditions, the composites containing 23 wt. % wollastonite silanized with the less efficient "OTS" and "Penta-1006" agents showed the greatest wear resistance during dry sliding friction. Wear resistance significantly depended on filler weight fraction and the load-speed mode of the tribological tests. Based on the obtained experimental data on the mechanical (including impact toughness) and tribological properties of the UHMWPE-based composites loaded with wollastonite, the optimal compositions (the filler content and the type of the coupling agent) for two load-speed modes were designed using the developed computer algorithm. The composites provided the predefined high tribomechanical properties for operation in the metal-polymer friction units compared to neat polymer.
AB - The tribomechanical properties of the wear-resistant ultrahigh molecular weight polyethylene (UHMWPE)-based composites loaded with wollastonite microfibres silanized with various coupling agents ("KH-550", "Penta-1006", and "OTS") were investigated. It was demonstrated that the mechanical properties of UHMWPE-based composites filled with various amounts of wollastonite (7-23 wt. %) increased by 1.3 times (yield strength) and by 1.8 times (elastic modulus), while the wollastonite silanization further improved yield strength by 9% in some cases. It was demonstrated that the composite loaded with 23 wt. % wollastonite silanized with the "KH-550" coupling agent possessed the maximum wear resistance under "moderate" conditions of tribological loading. Under "severe" conditions, the composites containing 23 wt. % wollastonite silanized with the less efficient "OTS" and "Penta-1006" agents showed the greatest wear resistance during dry sliding friction. Wear resistance significantly depended on filler weight fraction and the load-speed mode of the tribological tests. Based on the obtained experimental data on the mechanical (including impact toughness) and tribological properties of the UHMWPE-based composites loaded with wollastonite, the optimal compositions (the filler content and the type of the coupling agent) for two load-speed modes were designed using the developed computer algorithm. The composites provided the predefined high tribomechanical properties for operation in the metal-polymer friction units compared to neat polymer.
KW - Adhesion
KW - Permolecular structure
KW - Silane coupling agent
KW - Strength
KW - Ultra-high molecular weight polyethylene
KW - Wear resistance
KW - Wollastonite
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U2 - 10.3390/app10134511
DO - 10.3390/app10134511
M3 - Article
AN - SCOPUS:85087844773
VL - 10
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
SN - 2076-3417
IS - 13
M1 - 4511
ER -