High strength graphene oxide/chitosan composite screws with a steel-concrete structuredoi:10.1016/j.carbpol.2019.03.039ChitosanFiberGraphene oxideSteel-concrete structureDue to the biocompatibility, biodegradability and numerous resources of chitosan (CS), CS screws attract much more attention, as a new ...
Graphene is known as the strongest material ever discovered with a tensile strength of 130 GPa (compared to A36 structural steel (0.4 GPa) and Kevlar (polyaramid, 0.38 GPa). Also, graphene is very light (0.77 mg m−2), so 1 g of graphene can roughly cover a whole football field (...
氧化石墨烯表面具有大量含氧基团,具有很好的溶剂溶解度,和聚合物的亲和性。含氧基团的氧含量在30～40%,不溶于水。微片大小在0.5～3μm,厚度在0.55～1.2nm左右。无沉淀。 氧化石墨烯粉末是由氧化石墨烯溶胶通过真空冷冻干燥获得。氧化石墨烯在冷冻干燥的过程中不会因升温干燥失去表面含氧基团以及引起氧化石墨烯层...
While steel has great strength and is resistant to crack extension, graphene is more like a window glass. The material's incredible properties make it an excellent material for applications that require great durability. It is also conductive, and flexible. So, it is no wonder that scientists ...
et al. Effect of Defects on the Intrinsic Strength and Stiffness of Graphene. Nat. Commun. 5, 3186 (2014). 52. Zhang, Z., Yang, Y., Xu, F., Wang, L. & Yakobson, B. I. Unraveling the Sinuous Grain Boundaries in Graphene. Adv. Funct. Mater. 25, 367–373 (2015). Scientific ...
it has been shown that FA enhances the workability of concrete via the mitigation of bleeding46. Prior studies have confirmed that the incorporation of FA into conventional and reused aggregate concrete may enhance its long-term CS47. The growth of strength in FA, however, is contingent upon it...
In comparison to diamond (1.2 TPa), steel (200 GPa), and copper, Young’s modulus measured by various simulations in the graphene plane can be as high as 1–1.8 TPa (100 GPa). Both have tensile strengths that are equal to annealed steel (700 MPa) and annealed copper (...
摘要: TiCN graphene nanoflakes synthesized and integrated into AlNPB.XRD, FTIR, and SEM confirmed nanocomposite formation.4% TG NPs optimal for AlNPB MMC mechanical strength.Improved corrosion resistance with 4% TG NPs in MMC.Ballistic benefits for LAVs using 4% TG NPs reinforced MMC....
Here we report that the unique flexibility, mechanical strength, and electrochemical properties of the sutrode, allowed its placement over the SN terminal plexus, and the highly efficient recording of physiologically and electrically evoked CNAPs from the terminal SN fascicles. Placing the sutrode on...
A gaussmeter was used to measure the strength and direction of a magnetic field adjacent to graphene surface. Its gradient was approximated by the ratio of the magnetic difference to a certain distance within one millimeter. All the electrical measurements were carried out in a high vacuum ...