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Electrostatic Force Microscope (EFM) is applied to study of the properties of surface charge of polyimide films in micro-nanometer scale. The charge was injected by different kind of coating tips to the surface of polyimide films. After that the surface charge was characterized by EFM, the result indicated that it was difficult to inject charge with Pt/Ir coating tip for larger work function than...
Use type 4A nanoscale zeolite powder composite with Low-density polyethylene(LDPE), obtained the different of doping concentration of composite materials which the zeolite weight percentage are from 0.5wt% to 3wt%. By using broadband dielectric spectrometer measure and analyse the dielectric performance in a relatively wide frequency range to LDPE/zeolite composite and pure polyethylene at different...
Electrostatic Force Microscope (EFM) was applied to study the origin and decay properties of surface charge on original and corona-resistant Polyimide films in micro-nanometer scale. The surface charge were generated by injecting on the surfaces of the polyimide (PI) films using the conductive probe of EFM. After the surface charge were characterized by EFM, the results indicate that the difference...
Low-density polyethylene (LDPE)/pumice composites with different pumice weight percentage (1 wt%, 2 wt% and 5 wt%) were prepared by melt blending process in torque rheometer. Space charge distribution in composites and pure LDPE were investigated with pulsed electro-acoustic method (PEA). The results indicate that most of the space charge in pure LDPE under high electrical field was homo-polarity...
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