Abstract: A method of preparing carbon nanotube/polymer composite having electromagnetic interference (EMI) shielding effectiveness is disclosed, which includes: dispersing multi-walled carbon nanotubes (MWCNT) in an organic solvent such as N,N-Dimethylacetamide (DMAc); dissolving monomers such as methyl methacrylate (MMA) and an initiator such as 2,2-azobisisobutyronitrile (AIBN) in the MWCNT dispersion; and polymerizing the monomers in the resulting mixture at an elevated temperature such as 120° C. to form a MWCNT/PMMA composite. The composite is coated onto a PET film, and the coated PET film alone or a stack of multiple coated PET films can be applied as an EMI shielding material.

Abstract: A method of preparing carbon nanotube/polymer composite having electromagnetic interference (EMI) shielding effectiveness is disclosed, which includes: dispersing multi-walled carbon nanotubes (MWCNT) in an organic solvent such as N,N-Dimethylacetamide (DMAc); dissolving monomers such as methyl methacrylate (MMA) and an initiator such as 2,2-azobisisobutyronitrile (AIBN) in the MWCNT dispersion; and polymerizing the monomers in the resulting mixture at an elevated temperature such as 120° C. to form a MWCNT/PMMA composite. The composite is coated onto a PET film, and the coated PET film alone or a stack of multiple coated PET films can be applied as an EMI shielding material.

Abstract: A method of preparing carbon nanotube/polymer composite having electromagnetic interference (EMI) shielding effectiveness is disclosed, which includes: dispersing multi-walled carbon nanotubes (MWCNT) in an organic solvent such as N,N-Dimethylacetamide (DMAc); dissolving monomers such as methyl methacrylate (MMA) and an initiator such as 2,2-azobisisobutyronitrile (AIBN) in the MWCNT dispersion; and polymerizing the monomers in the resulting mixture at an elevated temperature such as 120° C. to form a MWCNT/PMMA composite. The composite is coated onto a PET film, and the coated PET film alone or a stack of multiple coated PET films can be applied as an EMI shielding material.

Abstract: The present invention provides a modified carbon nanotube having —C(O)—R? or —C(O)—R—COOH covalently bounded to a surface of carbon nanotube, wherein R? is C1-C26 alkyl or C2-C26 alkenyl, and R is C1-C26 alkylene or C2-C26 alkenylene. The present invention also discloses a carbon nanotubes/polymer composite having electromagnetic interference shielding effectiveness, which contains 0.1-10% of modified carbon nanotubes, based on the weight of the polymer. The present invention further provides methods for preparing the modified carbon nanotubes and the composite.

Abstract: A method of preparing carbon nanotube/polymer composite is disclosed, which includes: forming a layer of TiO2 on carbon nanotubes (CNTs) with a precursor of TiO2 by a sol-gel or hydrothermal method, a weight ratio of the TiO2 precursor to CNT being 0.3:1 to 30:1; modifying the TiO2-coated CNTs with a coupling agent to improve the affinity thereof to a polymer; and mixing a polymer with the resulting modified TiO2-coated CNTs to form a TiO2-coated CNT reinforced polymer composite. The mechanical properties of the polymer composite can be enhanced by using an additional fiber reinforcement material.

Abstract: A method of preparing carbon nanotube/polymer composite having electromagnetic interference (EMI) shielding effectiveness is disclosed, which includes: dispersing multi-walled carbon nanotubes (MWCNT) in an organic solvent such as N,N-Dimethylacetamide (DMAc); dissolving monomers such as methyl methacrylate (MMA) and an initiator such as 2,2-azobisisobutyronitrile (AIBN) in the MWCNT dispersion; and polymerizing the monomers in the resulting mixture at an elevated temperature such as 120° C. to form a MWCNT/PMMA composite. The composite is coated onto a PET film, and the coated PET film alone or a stack of multiple coated PET films can be applied as an EMI shielding material.

Abstract: A method of preparing carbon nanotube/polymer composite is disclosed, which includes: forming a layer of TiO2 on carbon nanotubes (CNTs) with a precursor of TiO2 by a sol-gel or hydrothermal method, a weight ratio of the TiO2 precursor to CNT being 0.3:1 to 30:1; modifying the TiO2-coated CNTs with a coupling agent to improve the affinity thereof to a polymer; and mixing a polymer with the resulting modified TiO2-coated CNTs to form a TiO2-coated CNT reinforced polymer composite. The mechanical properties of the polymer composite can be enhanced by using an additional fiber reinforcement material.