A novel method to study the property of the interface between silicone rubber and fiber reinforced plastic

Li, Shaohua; Bao, Weining; Liang, Xidong; Liu, Yingyan; Gao, Yanfeng; Wu, Chao; Fang, Jiang

doi:10.1109/tdei.2020.008469

Cited by 13 publications

(6 citation statements)

References 19 publications

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“…The interfacial resistivity of the double-layer dielectric is me trode system [21,22], an interfacial pressure device, and the Ke ment of the interfacial electrodes and the wiring diagram of the Figure 3. The four-electrode system includes two interfacial ele shielding electrodes on the upper and lower surfaces of the dou per foil tape with a thickness of 0.05 mm is adopted for all electr As for the study of temperature effects, the testing temperature of 25-100 • C is controlled by an air-drying oven.…”

Section: Interfacial Resistivity Experimentsmentioning

confidence: 99%

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Electrical Resistance Performance of Cable Accessory Interface Considering Thermal Effects

Zhang

Lin

et al. 2023

Materials

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Power cables are widely used in various fields of power transmission, and cable accessories are the weakest link in power cable systems due to their complex structure and multi-layer insulation coordination issues. This paper investigates the changes in electrical properties of the silicone rubber/cross-linked polyethylene (SiR/XLPE) interface at high temperatures. The physicochemical properties of XLPE material under thermal effects with different times are characterized through FTIR, DSC, and SEM tests. Finally, the mechanism of the effects of the interface state on the electrical properties of the SiR/XLPE interface is analyzed. It is found that with the increase in temperature, the changes in electrical performance of the interface do not show a monotonic downward trend, while interestingly, they can be divided into three stages. Under the thermal effects for 40 d, the internal recrystallization of XLPE in the early stage improves the electrical properties of the interface. In the later stage of thermal effects, the amorphous region inside the material is severely damaged and the molecular chains are severely broken, resulting in a decrease in the electrical properties of the interface. The results above provide a theoretical basis for the interface design of cable accessories at high temperatures.

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Section: Interfacial Resistivity Experimentsmentioning

confidence: 99%

“…The interfacial resistivity of the double-layer dielectric is measured using a four-electrode system [21,22], an interfacial pressure device, and the Keithley 6485. The arrangement of the interfacial electrodes and the wiring diagram of the testing circuit is shown in Figure 3.…”

Section: Interfacial Resistivity Experimentsmentioning

confidence: 99%

Electrical Resistance Performance of Cable Accessory Interface Considering Thermal Effects

Zhang

Lin

et al. 2023

Materials

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“…Several studies have depicted that the interface leakage current can effectively reflect the electrical properties of the sheath-core interface of composite insulators [7,16,23]. This study developed a four-electrode current test platform (Supporting Information S1: Figure A3) to measure the leakage current at the FRP/RPUF interface.…”

Section: Characterisation and Testsmentioning

confidence: 99%

Influence characteristics of water penetration on fibre‐reinforced polymer/rigid polyurethane foam interface of the composite cross‐arm considering natural ageing

et al. 2023

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Fibre‐reinforced polymer (FRP)/rigid polyurethane foam (RPUF) interface is susceptible to moisture intrusion in addition to natural ageing during operation. This study investigated the influence of moisture intrusion on the FRP/RPUF interface under natural ageing using experiments and molecular dynamics (MD) simulations. Water absorption, shear strength, and leakage current tests were used to clarify the changes in the interface performance. The degradation mechanism of moisture intrusion at the interface under natural ageing was revealed by MD simulation and micro‐characterisation. The results show that the natural ageing of interfacial materials will slightly reduce the quality of the interface but will reduce the water resistance of the material and promote the process of water intrusion into the interface. In addition, water mainly invades the interface through RPUF. After water penetration, the interfacial bonding strength and insulation performance significantly decreased. Plasticisation and hydrolysis of interfacial materials are the main reasons for decreased interfacial adhesion. Hydrolysis can cause irreversible damage to the interface, increasing interface defects and water absorption. The vicious cycle of material hydrolysis is the ultimate cause of interfacial debonding. The polar molecules produced by this process and the water absorbed by the interface caused the degradation of the interface insulation performance.

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“…Jiang [5] found that water molecules attack the main and side chains of siloxane and lead to the break of the molecular chain, which further destroys the cross-linking structure of the siloxane. As a result, water permeation can cause chalking of SR and water accumulation at the interface, which may lead to its faster degradation in performance in terms of decreased interface resistivity and poor interface adhesion [6][7][8][9][10]. Recently, several new kinds of abnormal fracture accidents happened to the composite insulators, such as the brittle fracture and the newly found decay-like fracture [11][12][13], which pose a great threat to the reliability of the power grid.…”

Section: Introductionmentioning

confidence: 99%

Inhibiting liquid permeation into silicone rubber by superhydrophobic coating for prolonged service life

et al. 2023

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Liquid permeation into silicone rubber (SR) may lead to the degradation or complete failure of the composite insulators. Aiming to inhibit liquid permeation, two kinds of superhydrophobic coatings are applied to the SR surface. The liquid permeation properties of SR with different types of liquids are investigated, and the Langmuir diffusion model is applied to analyse the experimental data. The results show that the composite superhydrophobic coating can effectively inhibit liquid permeation by reducing the contact area between the surface and liquid, and the stable structure of the composite coating can maintain the performance after the liquid permeation and effusion. However, the nano‐particle coating without the polymer binder experiences severe performance degradation during the immersion test, and it cannot restrain the liquid permeation anymore after it loses the superhydrophobicity. As a validation of the effective protection, the insulation resistivity change was measured. The resistivity decreases sharply for the pristine SR after water permeation; however, the decrease is much smaller for the coated SR. The current study not only provides new insight into the liquid permeation properties of SR with different surface wettability but also suggests an effective measure to prevent liquid permeation into SR.

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A novel method to study the property of the interface between silicone rubber and fiber reinforced plastic

Cited by 13 publications

References 19 publications

Electrical Resistance Performance of Cable Accessory Interface Considering Thermal Effects

Electrical Resistance Performance of Cable Accessory Interface Considering Thermal Effects

Influence characteristics of water penetration on fibre‐reinforced polymer/rigid polyurethane foam interface of the composite cross‐arm considering natural ageing

Inhibiting liquid permeation into silicone rubber by superhydrophobic coating for prolonged service life

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