The Research Of Graphene And Hydroxylation Of Carbon Nanotube Composites

For nano material has many excellent features, which make it represent the future development direction of the function materials. But due to the unique size effect they still can not be dispersed enough evenly in the resin matrix, which easily leads to the reunion effect of nanomaterials within the resin matrix, it largely affects the nanocomposite material’s properties. Although there have been a variety of ways to solve the problem of the reunion of nanomaterials, such as surface acid-base treatment, add dispersant and modify the matrix, etc, but all these methods taken into account are to improve from the material itself, and it is proved both theoretically and experimentally that these methods can not solve the dispersion problem of nano-materials good, thus it was suggested to optimize on the structure, first making the nano-materials into a thin film, which is the nano paper we usually call. Then use this nano-paper as the reinforced phase to manufacture nanocomposites, and ultimately the reunion problem of nanomaterials is overcomed.Graphene, with its excellent thermal, mechanical and electrical properties has become the studying focus of the research workers, it is the thinnest substance artificially manufactured ever known in the world. In this paper, we get some less-layer graphene by the oxidation reduction method, and then make nanopaper by the graphene, take the nano-paper as reinforcing phase and epoxy shape memory polymer as matrix to prepare graphene nano-paper composites. At last, some characterization and testing analysis are done to the nano paper composites manufactured.1、By the atomic force fibers we can see that the section thickness of the graphene manufactured by oxidation reduction method is about3nm. Generally, we consider that the section thickness of single layer graphene is about lnm, which means that the thickness of the graphene manufactured through such oxidation reduction method is about3layers.2、The maxium attrition rate of nano-paper composite materials within graphene is99.9%and the wave-absorbing peak reaches42dB3、The conductivity of graphene nano-paper is better than the nano-paper made of hydroxylation carbon nanotubes.4、The mechanical property of graphene nano-paper composite materials is worse than that of the hydroxylation carbon nanotubes. 5、The thermal propertiy of graphene nano-paper composite materials is better than hydroxylation carbon nanotubes.The carbon nanotubes is of lamellae curl shape in microcosmic, making it to be the unique bonding structure, eventually leading to the excellent performance of carbon nanotubes. Including mechanical, electrical, magnetic and thermal stability etc. Although carbon nanotubes have many excellent properties, there is also an important flaw that the solubility in the in the resin and water is low, in order to overcome this problem, scientists begin to investigate the acidification of carbon nanotubes, let the surface of the carbon nanotube containing hydrophilic functional group.In this paper, we choose hydroxylation carbon nanotubes processed by organic acids as research object, the hydroxylation carbon nanotubes possess all the excellent properties of carbon nanotubes, what’s more they can dissolve well in the resin and water, then we can more easily get nano paper with stable and uniform performance, which has important significance for the subsequent preparation of nano paper composites. The study in this paper is the manufacture, characterization and testing analysis of hydroxylation carbon nanotubes and carbon nanofibers nano-paper, then mix the nano paper with epoxy shape memory resin to manufacture nano paper reinforced resin composite materials, at last the property characterization and analysis of the composited materials are...