Micro-PIXE analysis of impurity distributions in “trees” grown in high-voltage cables

Hinrichsen, P.F.; Kajrys, G.; Houdayer, A.; Jérémie, A.; Belhadfa, A.; Crine, J.‐P.; Campbell, John L.

doi:10.1016/0168-583x(90)90893-y

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…Dicumyl peroxide (DCP), the most prevalent crosslinking agent used to cure LDPE, is easy to decompose above 120°C so that scorching is likely to occur during XLPE processing. Impurities, such as aggregates of antioxidants, and the scorching of LDPE can lead to electrical breakdown during cable service 2–4. Consequently, care should be taken to select antioxidants to stabilize XLPE.…”

Section: Introductionmentioning

confidence: 99%

Influence of binary combined systems of antioxidants on the stabilization of peroxide‐cured low‐density polyethylene

Zhang

Yang

Song

et al. 2012

J of Applied Polymer Sci

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The secondary antioxidants Irganox 168 and 242 and dilaurylthiodipropionate (didodecyl-3,3 0 -thiodipropionate) (DLTP) were chosen to be combined with the primary phenol antioxidants Irganox 300, 1010, 1035, and 1076, and the effects of the binary combined systems of antioxidants on the peroxide curing reaction and the long-term stability of crosslinked low-density polyethylene (XLPE) were studied through isothermal dynamic rheological and mechanical testing. The results show that the primary phenol antioxidants with lower melting points had better resistance to scorching and exhibited good synergistic effects with the secondary antioxidants. Irganox 168 had little resistance to scorching, whereas Irganox DLTP had moderate resistance, and Irganox 242 had the greatest resistance. Irganox 168 and DLTP guaranteed the mechanical properties well, whereas Irganox 242 reduced the tensile strength obviously. Irganox 300 and 1035 combined with secondary antioxidants performed poorly in longterm thermal aging test, whereas Irganox 1076 in combination with secondary antioxidants displayed a moderate effect of aging resistance, and Irganox 1010 showed the best effect.

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Section: Introductionmentioning

confidence: 99%

Influence of binary combined systems of antioxidants on the stabilization of peroxide‐cured low‐density polyethylene

Zhang

Yang

Song

et al. 2012

J of Applied Polymer Sci

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Semiconductive composites from ethylene 1‐octene copolymer and polyaniline coated nylon 6: Studies on mechanical, thermal, processability, electrical, and EMI shielding properties

Bhadra

Singha

Khastgir

2008

Polymer Engineering & Sci

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In‐situ coating of polyaniline (PAni) on nylon 6 filaments was carried out by oxidative emulsion polymerization of aniline in presence of nylon 6 filaments. The semiconducting composites were prepared by mixing polyaniline coated Nylon 6 (PN6) with a polyolefinic thermoplastic elastomer namely ethylene 1‐octene copolymer (EN). The effect of composition on different mechanical, dynamic mechanical, thermal, electrical properties, morphology, processability, and electromagnetic interference (EMI) shielding efficiency (SE) of these composites were investigated. The results revealed that the increased incorporation of PN6 in EN caused increase in modulus, hardness, glass transition temperature (Tg), apparent shear viscosity, electrical properties, EMI SE but caused decrease in the tensile strength, elongation at rupture, damping character, and die‐swell during injection molding. There are linear increase in AC conductivity and exponential decay in relative dielectric constant with the increase in applied pressure on composites. When a composite is subjected to electron beam (EB) radiation some cross‐links are formed. Mechanical properties of the composite after radiation treatment found to improve. Flow behavior shows the material is pseudo‐plastic in nature. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers

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Proton microprobe analysis of water trees in underground high voltage cables

Ahmed

Garwan

Al-Ohali

et al. 2003

Nuclear Instruments and Methods in Physics Research Section B:

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Micro-PIXE analysis of impurity distributions in “trees” grown in high-voltage cables

Cited by 4 publications

References 11 publications

Influence of binary combined systems of antioxidants on the stabilization of peroxide‐cured low‐density polyethylene

Influence of binary combined systems of antioxidants on the stabilization of peroxide‐cured low‐density polyethylene

Semiconductive composites from ethylene 1‐octene copolymer and polyaniline coated nylon 6: Studies on mechanical, thermal, processability, electrical, and EMI shielding properties

Proton microprobe analysis of water trees in underground high voltage cables

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