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In this paper, conductance characteristics of the two kinds of XLPE materials such as XLPE and XLPE/SiO2 nano-composite were measured under high stresses (2–70kV/mm) and under different temperatures (e.g. 20°C, 50°C and 80°C), after both XLPE were treated through different thermal treatment methods including thermal treatment and thermal poling treatment. The test results show that nanodoped XLPE...
The study of production, transfer and accumulation of space charge in silicon rubber (SIR) under direct current (DC) is significant for the research of new high voltage (HV) DC cable accessories and the accessories' stable operation. In this paper, based on SIR materials used for cable accessories and the actual low working stress, the accumulation of space charges in SIR was measured under low DC...
Dielectric properties of low-density polyethylene (LDPE) blended with metallocene catalyzed polyethylene (MPE) to 1, 3, 5 wt% of the latter are reported. It was found that the 1 wt% MPE blend had the lowest volume resistivity, the highest direct current (DC) breakdown strength and the least accumulated space charge. The crystalline morphology of the blends was studied through differential scanning...
It is well known that most fluids of low viscosity are penetrable into polyethylene and that some fluids such as acetophenone and silicone oil used as additives have the capability of inhibiting tree initiation or growth in polyethylene. Additives having such a capability are attractive to the insulation industry because the inhibition of tree initiation or growth implies the extension of the service...
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