Chemical characterization and research on the silicone rubber material used for outdoor current transformer insulation

Wang, Zhigao; Zhang, Xinghai; Wang, Fangqiang; Lan, Xinsheng

doi:10.1080/10426507.2016.1231189

Cited by 14 publications

(4 citation statements)

References 16 publications

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“…FTIR was utilized to analyze the change of the molecular structure and functional groups in the surface of samples [26], and specific molecules and groups located in the surface layer, typically 1 μm to 10 μm, could be identified by the attenuated total reflection technique. The FTIR measurements were performed with a Nicolet 5700 FTIR spectrometer (Thermo Fisher Scientific, Waltham, MA, USA).…”

Section: Performance Analysis Methodsmentioning

confidence: 99%

RTV Silicone Rubber Degradation Induced by Temperature Cycling

et al. 2017

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Room temperature vulcanized (RTV) silicone rubber is extensively used in power system due to its hydrophobicity and hydrophobicity transfer ability. Temperature has been proven to markedly affect the performance of silicone rubbers. This research investigated the degradation of RTV silicone rubber under temperature cycling treatment. Hydrophobicity and its transfer ability, hardness, functional groups, microscopic appearance, and thermal stability were analyzed using the static contact angle method, a Shore A durometer, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry (TG), respectively. Some significant conclusions were drawn. After the temperature was cycled between −25 • C and 70 • C, the hydrophobicity changed modestly, but its transfer ability changed remarkably, which may result from the competition between the formation of more channels for the transfer of low molecular weight (LMW) silicone fluid and the reduction of LMW silicone fluid in the bulk. A hardness analysis and FTIR analysis demonstrated that further cross-linking reactions occurred during the treatment. SEM images showed the changes in roughness of the RTV silicone rubber surfaces. TG analysis also demonstrated the degradation of RTV silicone rubber by presenting evidence that the content of organic materials decreased during the temperature cycling treatment.

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Section: Performance Analysis Methodsmentioning

confidence: 99%

RTV Silicone Rubber Degradation Induced by Temperature Cycling

et al. 2017

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“…Different types of coatings on polymers such as fluoroalkyl silane [7], siloxane nanoparticle coating [8,9], PDMS/nano-silica hybrid coating [3,10-12], etc. are researched.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of self-cleaning superhydrophobic silicone rubber insulator through laser texturing

Patil

Aravindan

Sarathi

et al. 2020

Surface Engineering

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Silicone insulators are gaining its importance in the transmission and distribution of the power system networks. This study proposes a simple and high throughput way of fabrication of superhydrophobic silicone surfaces. The Nd:YAG nanosecond pulse laser was used to engrave six different types of structures on silicone rubber. The water contact angle (CA) and contact angle hysteresis (CAH) were measured using drop shape analyser goniometer. The self-cleaning property of the structured silicone surfaces was tested. Among six types of patterns, the structures formed through 50% scanning overlapped possess high CA (159 ± 1°) with very low CAH (3°) which is desirable for any self-cleaning surface. However, a completely irradiated silicone surface gives the highest CA (163 ± 2°) with very high CAH (61.84°). The proposed work is a vital step towards making a superhydrophobic insulator surface without the use of any coating for high voltage power system applications.

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“…Due to the wide application of silicone rubbers as electrical insulators in electrical apparatus, power transmission, and distribution systems, etc. [9,10,11,12,13], the studies on the ageing behaviour of silicone rubbers have mostly focused on weatherability, UV radiation ageing, and dielectric breakdown [10,11,13,14,15]. In contrast, there have been few studies on the deterioration of silicone rubber properties in other applications.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Effects of In-Service Temperature and Functional Fluid on the Ageing of Silicone Rubber

et al. 2019

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With an organic/inorganic hybrid nature, silicone elastomers are amongst the most versatile engineering materials, exploited in a wide range of applications either as end-products or in manufacturing processes. In many industrial machines, silicone components are exposed to in-service conditions, such as high or low temperatures, contact with functional fluids, mechanical loading, and deformations, which can adversely affect these components and reduce their lifespan, leading to machine failure in turn. The present study investigates the behaviour of a silicone component of a manufacturing equipment and the variations in the part’s properties due to in-service conditions (temperature, exposure to heat transfer fluid, and mechanical deformation) to develop a monitoring tool. An experimental design was employed to study the main and the interaction effects of temperature (22 °C, 180 °C), medium (air, synthetic heat transfer fluid), and strain (0%, 200%) on the silicone component’s properties. Results showed that while the chemistry of the component remains intact, its thermal and in particular mechanical properties are largely influenced by the in-service conditions. Consequently, leading to a physical rather than a chemical failure of the component and limiting its service life. Statistical analysis revealed that high temperature and the exposure to the heat transfer fluid have the most sever effects. Moreover, these two manufacturing parameters were found to have a significant interaction with one another, whose effect cannot not be neglected.

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Chemical characterization and research on the silicone rubber material used for outdoor current transformer insulation

Cited by 14 publications

References 16 publications

RTV Silicone Rubber Degradation Induced by Temperature Cycling

RTV Silicone Rubber Degradation Induced by Temperature Cycling

Fabrication of self-cleaning superhydrophobic silicone rubber insulator through laser texturing

Understanding the Effects of In-Service Temperature and Functional Fluid on the Ageing of Silicone Rubber

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