Abstract:The accelerated thermal aging of a CSPE were carried out for 0, 80.82, 161.63 days at 100℃, which are equal to 0, 40 and 80 years of aging at 50℃, respectively. The volume electrical resistivities of the seawater and freshwater flooding were measured through 3-terminal circuit diagram. The volume electrical resistivities of the 0y, 40y and 80y were 2.454×10
-The accelerated thermal aging of CSPE (chlorosulfonated polyethylene) was carried out for 40.41, 121.22, and 202.04 days at 100°C, which are equivalent to 20, 60, and 100years of aging at 50°C, respectively. The volume electrical resistivities of the accelerated thermally aged CSPE samples for 0, 40.41, 121.22, and 202.04 , respectively, at room temperature. The measured currents of the accelerated thermally aged CSPE and the standard sample were almost constant after 5 min of applying a 300-V/mm electric field to the CSPE. The V-I slope of the accelerated thermally aged CSPE sample was increased if the applied electric field was increased at room temperature, and the V-I slope of the accelerated thermally aged CSPE was higher than that of standard CSPE.
-Silicon carbide (SiC)-zirconium diboride (ZrB 2 ) composites were prepared by subjecting a 60:40 vol% mixture of β-SiC powder and ZrB 2 matrix to spark plasma sintering (SPS) in 15 mmΦ and 20 mmΦ molds. The 15 mmΦ and 20 mmΦ compacts were sintered for 60 sec at 1500 °C under a uniaxial pressure of 50 MPa and argon atmosphere. Similar composites were simulated using Flux ® 3D computer simulation software. The current and power densities of the specimen sections of the simulated SiC-ZrB 2 composites were higher than those of the mold sections of the 15 mmΦ and 20 mmΦ mold simulated specimens. Toward the centers of the specimen sections, the current densities in the simulated SiC-ZrB 2 composites increased. The power density patterns of the specimen sections of the simulated SiC-ZrB 2 composites were nearly identical to their current density patterns. The current densities of the 15 mmΦ mold of the simulated SiC-ZrB 2 composites were higher than those of the 20 mmΦ mold in the center of the specimen section. The volume electrical resistivity of the simulated SiC-ZrB 2 composite was about 7.72 times lower than those of the graphite mold and the punch section. The power density, 1.4604 GW/m 3 , of the 15 mmΦ mold of the simulated SiC-ZrB 2 composite was higher than that of the 20 mmΦ mold, 1.3832 GW/m 3 . The ZrB 2 distributions in the 20 mmΦ mold in the sintered SiC-ZrB 2 composites were more uniform than those of the 15 mmΦ mold on the basis of energy-dispersive spectroscopy (EDS) mapping. The volume electrical resistivity of the 20 mmΦ mold of the sintered SiC-ZrB 2 composite, 6.17 × 10 -4 Ω cm, was lower than that of the 15 mmΦ mold, 9.37 × 10 -4 Ω ·cm, at room temperature.
The accelerated thermal aging of CSPE(chloro sulfonate polyethylene) of test cables were carried out for the period equal to 20, 40, 60, 80 and 100 years in air at 100, 110 and 120 , respectively. The CSPE cables (TAIHAN electric wire Co. Ltd) were used as starting materials. Condition monitoring methods of the accelerated thermal aging of CSPE cables were estimated through EAB (elongation at break) of IEC 62582, and those were newly estimated through volume electrical resistivity. A validated estimation of the new condition monitoring method of the accelerated thermal aging of CSPE cables was conducted by EAB, apparent density, FE-SEM(field emission scanning electron microscope), XPS(x-ray photoelectron spectroscopy) and WD-XRF(wavelength dispersive x-ray fluorescence). The activation energy of NPPs cable is calculated by RT E a
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.