Electrical and material characterization of field-aged 400 kV silicone rubber composite insulators

In this article we report the preparation of a graphene/room temperature vulcanized (RTV) silicone rubber composite. Both the morphology and the properties of the composite were investigated in detail. SEM study shows that the composite has a microphase-separated structure. PDMS is the continuous phase, and the randomly distributed graphene nanosheets and a few aggregates are the dispersed phase. However, DSC curves of the composites have only one glass transition temperature (Tg). With the increases of the graphene content, Tg increases and Tm decreases. Mechanical properties tests show that the addition of graphene has a significant reinforcement effect on silicone rubber. The tensile strength is 0.37MPa with graphene mass fraction at 1.0%, which increases 76% compared with that of pure silicone rubber parallel sample.

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Fabrication and characterization of silicon-based ceramic/aluminum nitride as thermally conductive hybrid filler in silicone rubber composite

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2014.05.004 ◽

2014 ◽

Vol 147 (1-2) ◽

pp. 11-16 ◽

Cited By ~ 5

Author(s):

Hsien-Tang Chiu ◽

Tanapon Sukachonmakul ◽

Chen-Hao Wang ◽

Karnthidaporn Wattanakul ◽

Ming-Tai Guo ◽

...

Keyword(s):

Aluminum Nitride ◽

Silicone Rubber ◽

Hybrid Filler ◽

Rubber Composite ◽

Thermally Conductive ◽

Fabrication And Characterization ◽

Silicon Based

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Synthesis and characterization of silicone rubber composite silica as the x-ray shielding

Journal of Physics Conference Series ◽

10.1088/1742-6596/1217/1/012016 ◽

2019 ◽

Vol 1217 ◽

pp. 012016

Author(s):

S Y Astuti ◽

H Sutanto ◽

G W Jaya ◽

E Hidayanto ◽

Z Arifin

Keyword(s):

Silicone Rubber ◽

Synthesis And Characterization ◽

X Ray ◽

Rubber Composite

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Preparation of Bamboo-Like Carbon Nanotube Loaded Piezoresistive Polyurethane-Silicone Rubber Composite

Polymers ◽

10.3390/polym13132144 ◽

2021 ◽

Vol 13 (13) ◽

pp. 2144

Author(s):

Mohammed Nabeel ◽

Miklós Varga ◽

László Kuzsela ◽

Ádám Filep ◽

Béla Fiser ◽

...

Keyword(s):

Carbon Nanotube ◽

Silicone Rubber ◽

Dip Coating ◽

Nitrogen Doped ◽

Novel Technology ◽

Pu Foam ◽

Rubber Composite ◽

Finger Touch ◽

Human Monitoring ◽

Strength And Durability

In this study, a novel technology is reported to prepare a piezoresistive polyurethane-silicone rubber nanocomposite. Polyurethane (PU) foam was loaded with a nitrogen-doped bamboo-shaped carbon nanotube (N-BCNT) by using dip-coating, and then, impregnated with silicone rubber. PU was used as a supporting substrate for N-BCNT, while silicone rubber was applied to fill the pores of the foam to improve recoverability, compressive strength, and durability. The composite displays good electrical conductivity, short response time, and excellent repeatability. The resistance was reduced when the amount of N-BCNT (0.43 wt %) was increased due to the expanded conductive path for electron transport. The piezoresistive composite has been successfully tested in many applications, such as human monitoring and finger touch detection.

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Correlation of Global Quantities at Material Characterization of Pressure-Sensitive Materials Using Sharp Indentation Testing

Lubricants ◽

10.3390/lubricants9030029 ◽

2021 ◽

Vol 9 (3) ◽

pp. 29

Author(s):

Carl F. O. Dahlberg ◽

Jonas Faleskog ◽

Per-Lennart Larsson

Keyword(s):

Finite Element ◽

Material Characterization ◽

Pressure Sensitivity ◽

Pressure Sensitive ◽

The Mean ◽

Sharp Indentation ◽

Von Mises ◽

Von Mises Plasticity ◽

Hardness Values

Correlation of sharp indentation problems is examined theoretically and numerically. The analysis focuses on elastic-plastic pressure-sensitive materials and especially the case when the local plastic zone is so large that elastic effects on the mean contact pressure will be small or negligible as is the case for engineering metals and alloys. The results from the theoretical analysis indicate that the effect from pressure-sensitivity and plastic strain-hardening are separable at correlation of hardness values. This is confirmed using finite element methods and closed-form formulas are presented representing a pressure-sensitive counterpart to the Tabor formula at von Mises plasticity. The situation for the relative contact area is more complicated as also discussed.

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