Investigation of space charge behavior in polyhnide film during elevating temperature

Sato, Shuichi; Yanagisawa, Satoshi; Tanaka, Yasuhiro; Takada, Tatsuo; Watanabe, Rikio; Tomita, Nobuyuki

doi:10.1109/ceidp.2004.1364188

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…Another analysis of PEA measurements on a PI irradiated under a 140 keV electron beam at room temperature for various period of time (from 10 to 1800s) then heated up to 135°C has been reported [55]. The buildup of a negative peak into the bulk due to the accumulation of electrons provided by the beam after 10 s of irradiation was clearly observed.…”

Section: Effect Of Temperature and Moisture On Space Charge Distributionmentioning

confidence: 88%

Polyimide Used in Space Applications

Griseri¹

2021

Polyimide for Electronic and Electrical Engineering Applications

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Polyimide (PI) is an interesting material for space applications as it offers excellent thermal properties. However, due to its dielectric properties, charge storage and release can be at the origin of electrostatic discharges that are hazardous for the surrounding electrical equipment. Depending on the spacecraft orbit, it is necessary to study the impact of specific surrounding environment. In any cases, the effect of vacuum and temperature variations can be combined with electrons and protons' irradiation, atomic oxygen erosion, and photons impact from UV exposure. On the market, there exist many types of PI, and since several years, composite are also developed. The main properties that are usually observed are the conductivity that is analyzed from surface potential decay, the photoemission and the ability to initiate and propagate surface flashover. Since several years, the space charge storage analysis by the pulse electro-acoustic method has been developed as an interesting complementary tool. It is important to remember that experimental characterization needs to be representative to the space environment especially because it has been observed that PI can recover its original properties in air in a couple of hours depending on the ageing degree.

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Section: Effect Of Temperature and Moisture On Space Charge Distributionmentioning

confidence: 88%

Polyimide Used in Space Applications

Griseri¹

2021

Polyimide for Electronic and Electrical Engineering Applications

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“…LDPE and LDPE/MgO nanocomposite films with a height of 100 μm and a MgO content of 0.2, 0.5, 1.0 and 2.0 wt % were prepared. In order to measure the space charge in DC fields of up to 200 kV·mm −1 and at elevated temperatures of up to 60 °C, an improved PEA system was used [180]. The study revealed that: ( i ) the introduction of MgO nanoparticles lead to space charge reduction, ( ii ) the space charge density increased with increasing field and temperature and ( iii ) the local enhancement of the electric field was reduced in LDPE/MgO nanocomposites, particularly at higher concentrations of MgO [180].…”

Section: Space Charge In Nanocompositesmentioning

confidence: 99%

“…In order to measure the space charge in DC fields of up to 200 kV·mm −1 and at elevated temperatures of up to 60 °C, an improved PEA system was used [180]. The study revealed that: ( i ) the introduction of MgO nanoparticles lead to space charge reduction, ( ii ) the space charge density increased with increasing field and temperature and ( iii ) the local enhancement of the electric field was reduced in LDPE/MgO nanocomposites, particularly at higher concentrations of MgO [180]. Peng et al studied the space charge in films of 450 μm height based on LLDPE/MgO nanocomposites with a MgO content ranging from 0 to 5 wt % [19].…”

Section: Space Charge In Nanocompositesmentioning

confidence: 99%

Polyethylene Nanocomposites for Power Cable Insulations

et al. 2018

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This review represents a comprehensive study of nanocomposites for power cables insulations based on thermoplastic polymers such as polyethylene congeners like LDPE, HDPE and XLPE, which is complemented by original results. Particular focus lies on the structure-property relationships of nanocomposites and the materials’ design with the corresponding electrical properties. The critical factors, which contribute to the degradation or improvement of the electrical performance of such cable insulations, are discussed in detail; in particular, properties such as electrical conductivity, relative permittivity, dielectric losses, partial discharges, space charge, electrical and water tree resistance behavior and electric breakdown of such nanocomposites based on thermoplastic polymers are described and referred to the composites’ structures. This review is motivated by the fact that the development of polymer nanocomposites for power cables insulation is based on understanding more closely the aging mechanisms and the behavior of nanocomposites under operating stresses.

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“…To measure the space charge formation at high temperature, we used an improved PEA system for high temperature [3]. Measurements are carried out in silicone oil at temperature of 30, 40, 50 and 60 ˚C under the electric fields between 50 and 150 kV/mm for 20 minutes with a measurement interval of 10 s. Figure 1 (a) shows the space charge distributions.…”

Section: Samples and Experimental Conditionmentioning

confidence: 99%

Observation of Space Charge Formation in LDPE/MgO Nano-composite under DC Stress at High Temperature

Taima

Inaoka

Maezawa

et al. 2006

2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena

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Space charge formation in a nano-composite thin film under dc stress at various temperatures was observed using the pulsed electro-acoustic (PEA) method. The LDPE/MgO nano-composite materials, which is made of low-density polyethylene (LDPE) mixed with magnesium oxide (MgO) nano-size filler, has a higher resistivity under high dc stress than that in LDPE. Therefore, the material is expected to be used as an insulator of dc power transmission cable. To use the material as the dc power cable, however, it is necessary to study the space charge characteristics, especially at high temperature because an actual power cable is used at high temperature. Therefore, we tried to investigate the space charge formation in thin film of LDPE/MgO nano-composite under dc electric field at various temperatures using PEA system. From the experimental results, it was found that the space charge formation was strongly affected by the MgO contents in LDPE/MgO nano-composite.

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Investigation of space charge behavior in polyhnide film during elevating temperature

Cited by 7 publications

References 2 publications

Polyimide Used in Space Applications

Polyimide Used in Space Applications

Polyethylene Nanocomposites for Power Cable Insulations

Observation of Space Charge Formation in LDPE/MgO Nano-composite under DC Stress at High Temperature

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