Constructing a Fine Dispersion and Chemical Interface Based on an Electrostatic Self-Assembly and Aqueous Phase Compound in GO/SiO2/SBR Composites to Achieve High-Wear Resistance in Eco-Friendly Green Tires
2. ENGINEERING AND TECHNOLOGY, Chemical engineering (plants, products)
The hazard to the ecosystem caused by rubber microparticles generated from tire abrasion has been a constant concern. Therefore, to protect this ecosystem, the development of a tire tread with high abrasion resistance is especially significant. Herein, γ-aminopropyltriethoxysilane (APTES) was used to modify graphene oxide (GO) and silica (SiO2) to obtain GO and SiO2 with positive charges (NG and NS). Furthermore, NG and NS were electrostatically self-assembled by using maleic anhydride (MAH) hydrolysis, thereby obtaining composite particles (NG-NS) with “bridged structures”. Also, the NG-NS/styrene butadiene rubber (SBR) compounds possessing fine dispersion of NG-NS were prepared by the aqueous compounding method. During the crosslinking process, the vinyl groups in NG-NS reacted with the vinyl groups of the SBR molecule chains, thus forming strong chemical interfacial interactions between the NG-NS and rubber macromolecules. Compared with an SiO2/SBR composite, the 300 % modulus, tensile strength, abrasion resistance of the NG-NS/SBR composite were improved by 125 %, 122 %, 83.3 %, respectively. Compared with a GO/SiO2/SBR composite, heat build-up in the NG-NS/ SBR was decreased by 8.2 ◦C.
Zhang, Rui; Li, Jiaye; Jerrams, Stephen; Hu, Shui; Wen, Shipeng; and Zhang, Ligun, "Constructing a Fine Dispersion and Chemical Interface Based on an Electrostatic Self-Assembly and Aqueous Phase Compound in GO/SiO2/SBR Composites to Achieve High-Wear Resistance in Eco-Friendly Green Tires" (2023). Articles. 31.
This work was supported by the National Key R&D Program of China, China (2017YFE0126800) and the National Natural Science Foundation of China, China (51790504).
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