Performance of partially fluorinated polyimide insulation for aerospace applications

Hammoud, Ahmad; Stavnes, Mark W.; Ide, J.R.; Muegge, E.

doi:10.1109/ceidp.1995.483713

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…Insulating materials used in aircraft require light weight and erosion resistance in the bulk, while when considering the electrical property, surface partial discharges and flashover are more likely to occur at DC voltage in low-pressure environments. Additionally, a large amount of radiation at high altitudes is more likely to cause aging and degradation of insulating materials [4]. The above concerns require dielectric materials with enhanced properties in lighter weight, such as better erosion resistance, and stable electrical, chemical and physical properties especially under DC voltage at low pressures [5,6].…”

Section: Introductionmentioning

confidence: 99%

Fluorinated PEEK and XLPE as Promising Insulation Candidates for the Propulsion System of All-electric Aircraft

Xing

Chen

Yang

et al. 2022

IEEE Trans. Dielect. Electr. Insul.

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This article investigates the surface electrical properties of PEEK and XLPE before and after the fluorination modification. The samples are tested for surface conductivity, surface morphology, and surface anti-aging characteristics. The samples are also tested for flashover voltage with ramping voltage under 100 kPa, 20 kPa and 10 kPa. The results showed that the surfaces of PEEK and XLPE become slightly smoother with the increase of fluorination time, and the conductivity increased with the increase of fluorination time. After fluorination, the surface of PEEK shows significant hydrophilicity, while the surface hydrophobicity of XLPE is slightly reduced after fluorination, and there is a trend of recovery with the extension of fluorination time. After fluorination, the surface anti-aging performance is significantly improved. Compared with the untreated samples, the fluorinated PEEK has a higher flashover voltage at 100 kPa, and the flashover voltage is slightly increased at 10 kPa and 20 kPa, while the flashover voltage of XLPE after fluorination shows a downward trend especially under low pressures. This study provides a reference for fluorinated polymers as promising candidates for the insulation systems for all-electric aircraft.

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Section: Introductionmentioning

confidence: 99%

Fluorinated PEEK and XLPE as Promising Insulation Candidates for the Propulsion System of All-electric Aircraft

Xing

Chen

Yang

et al. 2022

IEEE Trans. Dielect. Electr. Insul.

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“…2 These properties make polyimides an ideal material for a large number of applications in domains such as microelectronics, optics, and aerospace. [3][4][5][6] Several investigations have quantified in the past years the enhancement of electrical properties such as electrical conductivity and dielectric constant in CNT polyimide nanocomposites. Park et al 7 have reported percolation phenomena of single-wall carbon nanotubes (SWNT) in a CP2 matrix with electrical conductivity exhibiting a dramatic enhancement of 10 orders of magnitude.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, they are thermally stable in a wide range of temperatures 2. These properties make polyimides an ideal material for a large number of applications in domains such as microelectronics, optics, and aerospace 3–6…”

Section: Introductionmentioning

confidence: 99%

Prediction of the effective dielectric constant in SWNT polyimide nanocomposites using the Bruggemann model

Pérez

2009

J of Applied Polymer Sci

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The Bruggemann model is used in this work to predict the effective dielectric constant of two kinds of single-wall carbon nanotube (SWNT) polyimide nanocomposites. Electrical conductivity and dielectric constant exhibit a dramatic enhancement at low content of SWNT fillers with a percolation threshold at 0.06 vol %. Results of the Bruggemann model are compared with the experimental values of the dielectric constant in CP2/SWNT and bCN/SWNT polyimide nanocomposites. A reasonable agreement for SWNT contents under the percolation threshold and a SWNT dielectric constant of 2000 was found between the Bruggeman model modified by Giordano and the experimental values.

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Performance of partially fluorinated polyimide insulation for aerospace applications

Cited by 2 publications

References 1 publication

Fluorinated PEEK and XLPE as Promising Insulation Candidates for the Propulsion System of All-electric Aircraft

Fluorinated PEEK and XLPE as Promising Insulation Candidates for the Propulsion System of All-electric Aircraft

Prediction of the effective dielectric constant in SWNT polyimide nanocomposites using the Bruggemann model

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