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The nano-silica was employed to prepare HIPS/silica nanocomposites through melt blending method. The microstructure of HIPS/silica nanocomposites was observed by transmission electron microscopy technique. The flammability of the nanocomposites was evaluated by the cone calorimeter. Digital camera and scanning electron microscopy were used to examine the macro-structure, submicro-structure and micro-structure...
Due to the excellent electrical properties, such as low dielectric loss, extremely low conductivity and high breakdown strength, polyimide film is widely applied as a kind of engineering plastic film and a type of insulating material in industry. However, with the disadvantage of organic polymer, its corona-resistance property is not good enough. During service operation, partial discharge (PD) may...
Parametric models of rotors are constructed by Pro/E. Based on models and aiming at mixing effect, the structures of rotor in continuous mixers are optimized with the numerical simulation results of mixing analysis which are performed by finite element package Polyflow. Using this method, optimization analysis is performed for three kinds of length ratio of positive screw flight to negative screw...
This paper presents a study on effects of flammation retardant in polycarbonate (PC) on the luminescence phenomena during the tracking tests. A photo multiplier tube was employed to measure the light intensity, which is found to be well in accordance with the development of tracking failure. The results obtained reveals that light is easily emitted when the phase angle of applied voltage is around...
Nickel nanorods with tunable diameters and lengths have been synthesized via a combined technique of PEG (polyethylene glycol)-assisted hydrothermal and thermal decomposition reducing method. The diameters and lengths of rods could be easily controlled by using different molecular mass of PEG. The structure, morphology and magnetic properties of the products were characterized by X-ray powder diffraction...
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