Research on the composite and functional characteristics of leather fiber mixed with nitrile rubber

Abstract

The recycling of leather solid waste not only involves resource utilization and environmental protection but also has important significance for the sustainable development of the leather industry. In this paper, the leather waste was crushed into fibers, which were stabilized and mixed with nitrile-butadiene rubber (NBR). The mixture was milled and vulcanized and a composite NBR-SLF (Stabilized Leather Fiber) is prepared for sealing material. The physical and mechanical properties, water resistance, oil resistance and aging resistance of NBR-SLF were tested and analyzed. It is found that the optimized NBR-SLF not only reduces the cost of raw material, but also changes the physical and mechanical performance of NBR. As a sealing material, it satisfies the substitution of NBR in terms of hardness and thermal stability. Especially the anti-aging ability is better than NBR. Graphical abstract

Leather-like composite materials prepared from natural rubber and two leather wastes: Wet blue leather and finished leather

“…8,9,11 Besides, the finished leather (FL) scraps are also discarded as waste from the production factory, leading to environmental problem. 2,14 Several studies have investigated the incorporation of leather solid wastes as filler into various polymeric materials, such as high density polyethylene, 3 polycaprolactam, 11 poly (vinyl chloride) (PVC), 5 poly (lactic acid) (PLA), 8 polyamide 12 (PA 12), 8 thermoplastic elastomer (TPE), 8 thermoplastic polyurethane (TPU), 4,8 poly (vinyl butyral) (r-PVB), 13 acrylonitrile-butadiene rubber (NBR), 15,16 and natural rubber (NR) 1,6,7,9,10,17 to produce composite materials. Babanas et al 5 incorporated different loadings of WBL scraps (20À60 parts by weight per hundred (phr) of resin) into plasticized PVC to produce leather-like material that could be used in footwear industry.…”