2021
DOI: 10.3390/pr9020313
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Abstract: Given the high interest in promoting crosslinking efficiency of ultraviolet-initiated crosslinking technique and ameliorating electrical resistance of crosslinked polyethylene (XLPE) materials, we have developed the funcionalized-SiO2/XLPE nanocomposites by chemically grafting auxiliary crosslinkers onto nanosilica surfaces. Trimethylolpropane triacrylate (TMPTA) as an effective auxiliary crosslinker for polyethylene is grafted successfully on nanosilica surfaces through thiolene-click chemical reactions with … Show more

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Cited by 6 publications
(7 citation statements)
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“…Nanodielectrics have been comprehensively developed for improving electrical performances or acquiring specific features from nanofillers, which employs a small content of inorganic nanoparticles (such as nanoscaled materials of aluminum oxide, nanosilica, and bismuth ferric acid) filled into dielectric polymers of silicone rubber or crosslinked polyethylene [ 34 , 35 , 36 ]. Based on the previous researches on nanodielectrics, it is preferable to use inorganic nanoparticles in sizes of 20~60 nm for preparing polymer-matrix nanocomposites with the melting blend method, in which the filling content of inorganic nanoparticles is generally lower than 5 wt% to adequately avoid agglomerations of nanofillers [ 37 , 38 , 39 ].…”
Section: Methodsmentioning
confidence: 99%
“…Nanodielectrics have been comprehensively developed for improving electrical performances or acquiring specific features from nanofillers, which employs a small content of inorganic nanoparticles (such as nanoscaled materials of aluminum oxide, nanosilica, and bismuth ferric acid) filled into dielectric polymers of silicone rubber or crosslinked polyethylene [ 34 , 35 , 36 ]. Based on the previous researches on nanodielectrics, it is preferable to use inorganic nanoparticles in sizes of 20~60 nm for preparing polymer-matrix nanocomposites with the melting blend method, in which the filling content of inorganic nanoparticles is generally lower than 5 wt% to adequately avoid agglomerations of nanofillers [ 37 , 38 , 39 ].…”
Section: Methodsmentioning
confidence: 99%
“…These results indicate that Ac-SEBS with a suitable degree of acetylation can improve the AC breakdown field strength of SEBS/PP. According to reference [37], the AC breakdown field strength of XLPE is 87.74 kV/mm. Accordingly, it can be found that the electrical strength of Ac-SEBS/PP is better than that of XLPE.…”
Section: Ac Breakdown Strengthmentioning
confidence: 99%
“…When the degree of acetylation is too high, Ac-SEBS clusters in the PP matrix, causing severe partial discharge, which makes the electrical tree easier to be initiated. According to reference [37], the electrical tree initiation voltage of XLPE is 5.99 kV. Accordingly, it can be found that the electrical tree resistance of Ac-SEBS/PP is better than that of XLPE.…”
Section: Electrical Tree Characteristicsmentioning
confidence: 99%
“…The concentration and size of inorganic nanofillers and the states of filler/matrix interfaces are primarily focused on homogenizing space charge distribution, impeding electric conduction, and promoting dielectric breakdown strength and thermodynamic properties of LDPE and XLPE nanocomposites [ 19 , 20 , 21 , 22 ]. Additionally, the surface-modified nanosilica by auxiliary crosslinkers has been developed to improve filler dispersivity and polyethylene crosslink degree in nanosilica/XLPE composites, which, meanwhile, acquire substantial improvements in electric-tree aging resistance and dielectric breakdown strength by regulating electric field and introducing deep charge traps [ 23 ].…”
Section: Introductionmentioning
confidence: 99%