Effect of Silane Coupling Agent on Tribological Properties of Hemp Fiber-Reinforced Plant-Derived Polyamide 1010 Biomass Composites

Abstract

Abstract:We have studied the effects of silane coupling agents used for the surface treatment of fiber on the tribological properties of hemp fiber (HF) reinforced plant-derived polyamide 1010 (PA1010) biomass composites. Hemp fibers were surface-treated by two surface treatment methods: (a) alkali treatment by sodium hydroxide solution and (b) surface treatment by silane coupling agents. Three types of silane coupling agents, namely aminosilane, epoxysilane and ureidosilane were used. These HF/PA1010 biomass composites were extruded using a twin extruder, and injection-molded. The mechanical and tribological properties were evaluated by the ring-on-plate type sliding wear test. It was found that tribological properties of HF/PA1010 biomass composites improved with the surface treatment by the silane coupling agent. This may be attributed to the change in the mode of friction and wear mechanism by the interfacial adhesion between fiber and matrix polymer according to the type of silane coupling agent used. In particular, the ureidosilane coupling agent showed the best improvement effect for the tribological properties of these biomass composites in this study.

Manufacturing and Characterization of Composite Fibreboards with Posidonia oceanica Wastes with an Environmentally-Friendly Binder from Epoxy Resin

“…These results are in total agreement with those reported by Zhu et al with flax-fibre-based composites, a different polymer matrix and different surface treatments, i.e., mercerization, silanization, acylation and peroxide treatments to increase particle-polymer interaction [ 46 ]. Nishitani et al also reported the positive effect of silane coupling agents in polyamide 1010/hemp fibre composites showing an improved tribological response due to increased polymer-reinforcement interaction [ 47 ].…”

Interface Bond Improvement of Sisal Fibre Reinforced Polylactide Composites with Added Epoxy Oligomer

“…It had been proved that chemical treatments of natural fiber surface were an effective way to improve the interfacial compatibility and adhesion of natural fiber-reinforced polymer composites [ 8 ]. Several types of chemical treatment methods were developed for surface modification of natural fiber, including silane treatment [ 9 , 10 ], acetylation treatment [ 11 ], benzoylation treatment [ 12 ], acrylation and acrylonitrile grafting [ 13 , 14 ], dopamine treatment [ 15 ], N-methylol acrylamide grafting [ 4 ], and so on. Alkali treatment with sodium hydroxide is one of the most widely used chemical treatment methods for natural fibers [ 16 , 17 ].…”

Biofiber‐reinforced polymeric hybrid composites: An overview on mechanical and tribological performance

“…5 wt% fiber content proved to be superior considering its lower wear rate and highest friction stability at 0.93. Nishitani et al [92] studied the influence of alkali and silane surface treatment on friction and wear characteristics of hemp fiber composites in plant-based polyamide biomass polymer matrix. Fibers, after treated with 5% NaOH and 1% silane coupling agents, were cured in the air for 24 hours and in oven at 80 C for 5 hours.…”