Aging resistant TiO2/silicone rubber composites

Bleszynski, Monika; Kumosa, M.

doi:10.1016/j.compscitech.2018.05.035

Cited by 28 publications

(25 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[29] Outdoor insulating composites such as silicone rubberbased composites, are expected to endure a long time in oxidative atmospheres, [30] thus using UV protective fillers such as carbon black or graphene can be suggested as suitable filler against UV protection. [2,18] On the other hand, graphene, as earlier mentioned, can increase the electrical, thermal, and mechanical performance of silicone rubber composite. TiO 2 is known as a self-cleaning inclusion [8] that can be utilized in silicone rubber composites to avoid destructive electrical incidents caused by surface contamination.…”

Section: Introductionmentioning

confidence: 93%

“…[9,[11][12][13][14] For example, incorporating aluminum hydroxide (ATH) and silica in silicone rubber composites was found to increase the tensile strength, dielectric breakdown strength, and thermal stability of the ATH/silicone and silica/silicone rubber composites. [9,[15][16][17][18][19][20][21] The combination of micro-aluminum nitride and nano-SiO 2 fillers with silicone rubber resulted in higher thermal stability, whereas a lower dielectric permittivity was achieved. [19] Composites with microsized Si 3 N 4 and nanosized Al 2 O 3 fillers showed remarkable thermal conductivity (1.62 W m −1 K −1 ) with relatively low dielectric constant, where the nanosized filler was embedded in gaps between the microsized fillers, forming a continuous thermally conductive composite.…”

Section: Introductionmentioning

confidence: 99%

“…TiO 2 is known as a self-cleaning inclusion [8] that can be utilized in silicone rubber composites to avoid destructive electrical incidents caused by surface contamination. [18,31] In addition, higher thermal stability and dielectric constant were reported for the tailored silicone rubber composites with TiO 2 filler. [32,33] Increase in the thermal stability of TiO 2 /silicone rubber composites prevents thermal degradation caused by the dry arc.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancement in electrical and thermal performance of high‐temperature vulcanized silicone rubber composites for outdoor insulating applications

Azizi

Momen

Ouellet-Plamondon

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

High‐temperature vulcanized silicone rubber composites are highly desirable as outdoor insulating materials due to their immense thermal and electrical performance. The aim of this work is to study the role of co‐combined fillers (modified fumed silica [MFS], titanium dioxide [TiO2], with graphene [G]) on electrical and thermal properties of silicone rubber (S) composites. The dielectric response of S/MFS_10 phr and S/TiO2_20 composites tailored with 2 phr G was characterized by broadband dielectric spectroscopy. The hybrid filler/composites were found to show higher thermal stability when 2 phr G was added. In addition, a low quantity of G filler was found to slightly increase the AC dielectric breakdown strength of the S/MFS_10 and S/TiO2_20, where an improvement of 3 and 5% was found, respectively. Several steps were observed in the thermal decomposition of the S rubber composites by thermogravimetric analysis‐Fourier‐transform infrared spectroscopy. Our findings revealed great potentials for fabricating hybrid‐filler/silicone rubber composites with enhanced electrical and thermal properties for outdoor insulating applications.

show abstract

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhancement in electrical and thermal performance of high‐temperature vulcanized silicone rubber composites for outdoor insulating applications

Azizi

Momen

Ouellet-Plamondon

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…In this case, particulate material (e.g., a photocatalyst) gets sprayed on a substrate, forming the desired surficial structures with adequate surface roughness. If hydrophobized photocatalysts are used as roughness enhancer particulate materials, it results in the formation of bifunctional composite surfaces with dual photocatalytic and extreme wetting properties [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of sulfur hydrophobized plasmonic photocatalyst towards durable superhydrophobic coating material

Lantos

Mérai

Deák

et al. 2020

Journal of Materials Science & Technology

View full text Add to dashboard Cite

The widely used photocatalytic self-cleaning coating materials are often made of polymers and polymer based composites, where the photocatalyst immobilization occurs with macromolecules. However, these organic polymers are often unstable under exposure to UV irradiation and easily degraded by reactive radicals produced in the photocatalytic reaction. In order to solve this problem, in this paper, we present the facile preparation of a multifunctional coating with dual superhydrophobic and photocatalytic properties, where the fixation and the hydrophobization of the plasmonic Ag-TiO 2 photocatalyst particles with visible light activity was performed with non-water soluble sulfur, which is a cheap and easily available material. The resulted novel nanocomposite with rough and nano-tructured surface roughness (1.25-2.45 nm determined by small-angle X-ray scattering) has sufficient low surface energy (3.3 mJ/m 2) for superhydrophobic (Â = 151.1 •) properties. Moreover, in contrast of the organic and expensive fluoropolymer based composites, this non-wetting nature was durable, because the measured Â was higher than 150 • during the long-term LED (max = 405 nm) light irradiation.

show abstract

“…Polydimethylsiloxane (PDMS)-based silicone rubber (SIR) materials are used in a variety of applications, including as industrial sealants, electrical insulation for aircraft, and on high voltage (HV) transmission lines in the form of non-ceramic insulators (NCI) [ 1 ]. While SIRs are typically resilient, aging will often reduce their hydrophobic and electrical properties, thus diminishing their mechanical strength and ability to prevent moisture ingress [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Although current methods exist to determine when damage to SIRs has occurred (i.e., measuring changes in hydrophobicity or material hardness), these testing methods often require specialized or cumbersome equipment [ 4 , 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Visualizing Polymer Damage Using Hyperspectral Imaging

Bleszynski

Mann²,

Kumosa

2020

Polymers

Self Cite

View full text Add to dashboard Cite

Silicone rubbers (SIRs) are common industrial materials which are often used for electrical insulation including weather sheds on non-ceramic insulators (NCIs). While SIRs are typically resilient to outside environments, aging can damage SIRs’ favorable properties such as hydrophobicity and electrical resistance. Detecting SIR aging and damage, however, can be difficult, especially in service. In this study we used hyperspectral imaging (HSI) and previously investigated aging methods as a proof of concept to show how HSI may be used to detect various types of aging damage in different SIR materials. The spectral signature changes in four different SIRs subjected to four different in-service aging environments all occurred between 400––650 nm. Therefore, remote sensing of NCIs using HSI could concentrate on bands below 700 nm to successfully detect in service SIR damage.

show abstract

Aging resistant TiO2/silicone rubber composites

Cited by 28 publications

References 21 publications

Enhancement in electrical and thermal performance of high‐temperature vulcanized silicone rubber composites for outdoor insulating applications

Enhancement in electrical and thermal performance of high‐temperature vulcanized silicone rubber composites for outdoor insulating applications

Preparation of sulfur hydrophobized plasmonic photocatalyst towards durable superhydrophobic coating material

Visualizing Polymer Damage Using Hyperspectral Imaging

Contact Info

Product

Resources

About