Study On Properties Of Modified Graphene Oxide/Carbon Black/Natural Rubber Composites

Based on previous studies,this paper prepared graphene oxide by the improved Hummers method,and modified the covalent bond of graphene oxide with a silane coupling agent(KH-570).Diffraction(XRD)and scanning electron microscopy(SEM)characterization of the prepared graphene oxide(GO)and modified graphene oxide(KH-GO)improved the dispersibility of functionalized graphene in composites.The experiment set up multiple sets of control experiments to explore the performance differences between the composites prepared by the melt blending method and the latex mixing method,and the performance differences between graphene oxide and modified graphene oxide filled into natural rubber.The performance difference of natural graphene oxide(graphene oxide)filled in natural rubber,the experimental results show that:The experiment set up multiple sets of control experiments to explore the performance differences between the composites prepared by the melt blending method and the latex mixing method,and the performance differences between graphene oxide and modified graphene oxide filled into natural rubber.The performance difference of natural graphene oxide(graphene oxide)filled in natural rubber,the experimental results show that:1.The mechanical properties of GO/CB/NR composites prepared by the melt blending method in the experiment have been significantly improved.When the graphene oxide is added in an amount of 0.75 Phr,the mechanical properties reach the best: constant tensile stress(100% Stress and 300% stress)increased by 21% and27.5%,respectively,and tensile strength increased by 34%.For the KH-GO/CB/NR composite prepared in the experiment,when graphene oxide was added at 1 Phr,the mechanical properties reached the best: the elongation stress(100% stress and 300%stress)increased by 45% and 25% %,Tensile strength increased by 58%,and increased with the increase in the number of added parts.2.The composite material prepared by the latex pre-blending method has more obvious reinforcement effect.Its tensile strength is increased by 48% and 61%,respectively,and the tear strength is increased by 34% and 57%.The latex blending method can improve graphite oxide.The degree of dispersion of olefin and modified graphene oxide in the rubber matrix improves the mechanical properties of the composite material better than the melt blending method.3.Analyze the high-temperature wear resistance of the composite material through the amount of abrasion,micro-morphology,and multiple typing spectra.The composite material has a GO/CB/NR at 60 ℃,an angle of 15°,and a load of 26.7N.The wear resistance of the composite material is divided into two stages: in the range of 0-0.5Phr,the wear of the composite decreases with the increase of graphene oxide,and the wear amount at the content of 0.5Phr is 0.44 mg,The wear lines also began to become smooth.When the amount of graphene oxide added reached 0.75 phr,the wear of the composite at 60℃ began to increase.The wear amount of the graphene oxide at 1 Phr was 0.49 mg.Surface abrasion is more steep.For KH-GO/CB/NR composites,the high-temperature abrasion decreases linearly with the increase of the amount of modified graphene oxide.The abrasion amount is 0.27 mg when the content of modified graphene oxide is 1Phr,which is effective.The abrasion loss is reduced,and the surface texture of the composite material is smoother.