Preparation of SiC/LDPE nanocomposites surface modified by KH-560 and its space charge property

Quan, Zhou; Sun, Chao; Wu, Ke; Di, Zou; Liao, Jingshu

doi:10.1109/ichve.2012.6357126

Cited by 2 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly, utilizing the modification technologies of doping, blending, grafting, and co-polymerization to obtain the modified insulation materials used for cable with high DC breakdown field strength, a high insulation resistance coefficient, a low thermal resistance coefficient, and reduced space charge accumulation are key for improving the performance of DC power cable [6][7][8][9][10]. Domestic and foreign studies have shown that the doping of nano-filler can appreciably suppress space charge accumulations [11][12][13], increase the breakdown field strength [14][15][16][17][18], and improve insulation performance of polyethylene [19][20][21]. Cheng Xia blended nano-ZnO particles with polyethylene matrix and studied the effects of different corona aging time on space charge distribution and pressure characteristics of materials [22].…”

Section: Introductionmentioning

confidence: 99%

Space Charge Characteristics and Electrical Properties of Micro-Nano ZnO/LDPE Composites

Gao

Yang³

et al. 2019

Crystals

View full text Add to dashboard Cite

The synergistic effects of zinc oxide (ZnO) Micro/Nano particles simultaneously filled in low-density polyethylene (LDPE) on the space charge characteristics and electrical properties has been investigated by melt blending micro-scale and nanoscale ZnO additive particles into LDPE matrix to prepare Micro-ZnO, Nano-ZnO, and Micro-Nano ZnO/LDPE composites. The morphological structures of composite samples are characterized by Polarizing Light Microscopy (PLM), and the space charge accumulations and insulation performances are correlated in the analyses with Pulse Electronic Acoustic (PEA), DC breakdown field strength, and conductance tests. It is indicated that both the micro and nano ZnO fillers can introduce plenty of heterogeneous nuclei into the LDPE matrix so as to impede the LDPE spherocrystal growth and regularize the crystalline grains in neatly-arranged morphology. By filling microparticles together with nanoparticles of ZnO additives, the space charge accumulations are significantly inhibited under an applied DC voltage and the minimum initial residual charges with the slowest charge decaying rate have been achieved after an electrode short connection. While the micro-nano ZnO/LDPE composites acquire the lowest conductivity, the breakdown strengths of the ZnO/LDPE nanocomposite and micro-nano composite are, respectively, 13.7% and 3.4% higher than that of the neat LDPE material.

show abstract

Section: Introductionmentioning

confidence: 99%

Space Charge Characteristics and Electrical Properties of Micro-Nano ZnO/LDPE Composites

Gao

Yang³

et al. 2019

Crystals

View full text Add to dashboard Cite

show abstract

“…It has been reported that sometimes even adding very small amount of nanofillers into the base material could probably lead to an impressive improvement of the electrical properties of the material, especially the space charge resistance [9, 40–85]. It has also been reported that the space charge packet phenomenon which appears in pure polymers such as LDPE under ultra‐high electric field will disappear in nanodielectrics [40].…”

Section: Effect Of Nanoparticles On Space Charge Dynamics In Nanodimentioning

confidence: 99%

“…The space charge distributions of pure LDPE, SiC/LDPE nanocomposites and KH‐560 surface modified SiC/LDPE nanocomposites were compared. The SiC/LDPE nanocomposite after surface modification could effectively suppress the charge injection and migration, which resulted in smaller space charge accumulation amount [57]. The effects of different coupling agents on the space charge behaviour of MgO/LDPE were also studied.…”

Section: Effect Of Nanoparticles On Space Charge Dynamics In Nanodimentioning

confidence: 99%

Research progress on space charge measurement and space charge characteristics of nanodielectrics

Wang

et al. 2018

IET Nanodielectrics

View full text Add to dashboard Cite

Since the proposal of the notion of nanodielectric, the space charge characteristics of nanodielectrics have been widely investigated. With the addition of nanoparticles, some nanodielectrics exhibit smaller space charge accumulation amount during the polarisation, and also faster charge decay during the depolarisation, which is believed to be related to the interfacial layer between the nanoparticle and the base material. In this study, the space charge measurement methods, theoretical models, and experimental results are reviewed in detail. Space charge measurement methods have been greatly improved after more than 20 years development. The nature of the interfacial layer between the nanoparticle and the base material has been investigated in detail, and based on that, several models are proposed to explain some electrical experimental results of nanodielectrics. Furthermore, the parameters of nanoparticle (such as the type, size, amount, shape, and the surface modification), the experimental conditions, and the base material properties can strongly affect the space charge characteristics of nanodielectrics. This study will provide useful research results and conclusions for researchers, and may also be an overview for recent study and an outlook for future investigation on space charge characteristics of nanodielectrics.

show abstract

Preparation of SiC/LDPE nanocomposites surface modified by KH-560 and its space charge property

Cited by 2 publications

References 3 publications

Space Charge Characteristics and Electrical Properties of Micro-Nano ZnO/LDPE Composites

Space Charge Characteristics and Electrical Properties of Micro-Nano ZnO/LDPE Composites

Research progress on space charge measurement and space charge characteristics of nanodielectrics

Contact Info

Product

Resources

About