Abstract
To achieve high value-added resource utilization of solid waste and reduce the cost of rubber manufacturing, this study utilizes finely structured municipal sludge (MS) with small particle size and abundant organic matter as the main raw materials. Through organic surface modification, rubber reinforcing fillers with surface affinity and compatibility are prepared. The effect of the amount of coupling agent bis-(triethoxysilyl-propyl)-tetrasulfide (Si69) on the properties of modified sludge powder (Si69-MS) reinforced styrene butadiene rubber (SBR) and its reinforcing mechanism were also studied. The results showed that when the mass fraction of Si69 was 1.5% of the MS, the adhesion work between Si69-MS and SBR increased from 88.34 to 101.42 mJ m−2, and the interfacial tension decreased from 25.45 to 0.34 mJ m−2. The tensile strength of the composite SBR reached 14.86 MPa, and the elongation at break reached 1829.1%. These findings indicate that the increased interface affinity between Si69-MS and the surface of SBR improves its dispersion within the SBR matrix, promoting the formation of a highly elastic composite rubber.
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Acknowledgements
This research was funded by the National Key Research and Development Program of China, grant number: 2019YFC1904601. The experiments were carried out at the Hebei University of Technology.
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Writing—original draft preparation, WZ; validation, YH; formal analysis, WZ and YH; investigation, WZh, YH, CL and, YQ; conceptualization, writing—review and editing, QT; supervision and project administration, XD, and JL. All authors have read and agreed to the published version of the manuscript.
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Zhao, W., Tang, Q., Liang, C. et al. A novel route for styrene–butadiene rubber reinforcement based on the interface effect of sludge modification. J Mater Cycles Waste Manag 25, 3747–3757 (2023). https://doi.org/10.1007/s10163-023-01792-8
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DOI: https://doi.org/10.1007/s10163-023-01792-8