The new structures and multifunctional materials is that it can achieve some other special functions while it has ability to
carry, such as wave-transparent, absorbing, anti-lightning, anti-heat, anti-nuclear etc. It represents the direction of future
development of structural materials. And graphene is the one of two-dimensional atomic crystal free substance only
found in the existence and shows great importance for fundamental studies and technological applications due to its
unique structure and a wide range of unusual properties. It exhibits great promise for potential applications in chemistry,
materials, and many other technological fields.
In this paper, we prepare nanopaper through physical vapor deposition (PVD) with a variety in the weight ratio between
graphene and nanofiber. Then prepare composite materials with nanopaper and T300/AG80 prepreg by the meaning of
autoclave molding. The morphology of nanopaper was characterized by transmission electron microscopy (TEM) and
scanning electron microscope (SEM). And the electrical properties and the EMI shielding performances of these
nanocomposites have been investigated experimentally by and four-point probe measurement and vector network
analyzer. The experimental results indicate that the composites made from graphene and nanofiber nanopaper have
highly electric capability, and the EMI shielding value of composites were all up to -15dB. In the same time the
conductivity and the EMI shielding performances were improved with increasing the ratio of graphene in nanopaper.
We tested the mechanical properties of composite materials at the same time. The average strength of composite
materials is about 2000MPa, the elastic modulus is 130GPa above. We are sure that it can be used as the load-bearing
structural material which has a multi-functional performance in the aviation field.