Weibull Analysis of Electrical Breakdown Strength as an Effective Means of Evaluating Elastomer Thin Film Quality

Silau, Harald; Stabell, Nicolai Bogø; Petersen, Frederik Riddersholm; Pham, Martin; Yu, Liyun; Skov, Anne Ladegaard

doi:10.1002/adem.201800241

Cited by 31 publications

(32 citation statements)

References 36 publications

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“…Dielectric elastomer stability is attracting a lot of attention, and various methods have been proposed recently. 28,29,[42][43][44] All these methods will easily detect phase separation since it will affect all properties largely.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the electro-mechanical properties of polydimethylsiloxane elastomers through blending with poly(dimethylsiloxane-co-methylphenylsiloxane) copolymers

Madsen

Boucher

et al. 2018

RSC Adv.

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In this work, improved electro-mechanical properties of silicone-based dielectric elastomers are achieved by means of adding so-called "voltage-stabilisers" prepared from phenyl-functional copolymers prepared using oxyanionic ring-opening polymerisation of octamethylcyclotetrasiloxane (D4) and either tetramethyltetraphenylcyclotetrasiloxane (T4) or octaphenylcyclotetrasiloxane (O4). The concentration of the voltage stabiliser was varied both by changing the molar ratio between methyl and phenyl groups in the copolymer and also by varying the amount of copolymer mixed into a PDMS-based elastomer. The phenyl-functional copolymers were generally found to disperse homogeneously in the PDMS matrix and this resulted in networks with improved mechanical and electrical properties. The developed elastomers were inherently extensible with enhanced tensile and tear strengths, due to phenyl-rich microphases acting as reinforcing domains. Furthermore, addition of phenyl-functional copolymers resulted in elastomers with increased relative permittivity and electrical breakdown strength compared to control elastomers while retaining a low dielectric loss. This demonstrates their efficiency as voltage stabilisers.a Phenyl content based on the added phenyl copolymer. b Residual mass fraction of the lm aer extraction and drying. c Mass fraction of the added phenyl copolymer. d Mass fraction of the phenyl copolymer in the extract, calculated from 1 H NMR. e Peak molecular weight of the early eluting peak. f Peak molecular weight relative to the late eluting peak.

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Section: Introductionmentioning

confidence: 99%

Enhancing the electro-mechanical properties of polydimethylsiloxane elastomers through blending with poly(dimethylsiloxane-co-methylphenylsiloxane) copolymers

Madsen

Boucher

et al. 2018

RSC Adv.

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“…One way of describing the statistical probability of the electrical breakdown of an elastomer involves employing the Weibull distribution [47], which is given by three parameters, namely, η, which describes the characteristic life, β, which is the shape parameter, and γ, which is the location parameter [47]. t is the variable, which in this case is the electrical field over the dielectric elastomer.…”

Section: Weibull Analysis Of Breakdown Strengthmentioning

confidence: 99%

“…t is the variable, which in this case is the electrical field over the dielectric elastomer. The probability density function (pdf) is described by [47]:…”

Section: Weibull Analysis Of Breakdown Strengthmentioning

confidence: 99%

Temperature dependence of dielectric breakdown of silicone-based dielectric elastomers

Vudayagiri

Jensen

et al. 2020

International Journal of Smart and Nano Materials

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A large number of insulation/dielectric failures in power systems are related to thermally-induced dielectrical breakdown, also known as 'thermal breakdown', at higher operating temperatures. In this work, the thermal breakdown behavior of typical silicone formulations, used as dielectrics in stretchable electronic devices, is analyzed at practically relevant operating temperatures ranging from 20°C to 80°C. An effective way of delaying the thermal breakdown of insulating materials is to blend micro-or nano-sized inorganic particles with high thermal conductivity, to dissipate better any losses generated during energy transduction. Therefore, two types of commercial silicone formulations, blended with two types of rutile hydrophobic, high-dielectric TiO 2 fillers, are investigated in relation to their dielectric properties, namely, relative permittivity, the dissipation factor, and electrical breakdown strength. The breakdown strengths of these silicone composites are subsequently evaluated using Weibull analysis, which indicates a negative correlation between temperature and shape parameter for all compositions, thus illustrating that the homogeneity of the samples decreases in line with temperature, but the breakdown strengths nevertheless increase initially due to the trapping effect from the high-permittivity fillers.

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“…In this way, the processing fluidity of EPDM/TiC (10/2) gum can be improved by the addition of POE. [1,23] ( Fig. 2)…”

Section: Bound Rubber Content Of Epdm/tic Gumsmentioning

confidence: 99%

“…In addition, the electronic devices can generate heat during daily usage, so the thermal conductivity of EPDM/TiC needs to be improved. [22][23] Thereby, semi-crystal POE is selected to be added into EPDM/TiC. Compared to other semi-crystal resins, POE not only has crystal lattices, but also exhibits elasticity.…”

Section: Introductionmentioning

confidence: 99%

Combined effect of modified titanium carbide (TiC) particles and ethylene alpha olefins (POE) on properties of ethylene propylene diene monomer (EPDM)/TiC/POE composites for electronic application

2019

J Mater Sci: Mater Electron

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Weibull Analysis of Electrical Breakdown Strength as an Effective Means of Evaluating Elastomer Thin Film Quality

Cited by 31 publications

References 36 publications

Enhancing the electro-mechanical properties of polydimethylsiloxane elastomers through blending with poly(dimethylsiloxane-co-methylphenylsiloxane) copolymers

Enhancing the electro-mechanical properties of polydimethylsiloxane elastomers through blending with poly(dimethylsiloxane-co-methylphenylsiloxane) copolymers

Temperature dependence of dielectric breakdown of silicone-based dielectric elastomers

Combined effect of modified titanium carbide (TiC) particles and ethylene alpha olefins (POE) on properties of ethylene propylene diene monomer (EPDM)/TiC/POE composites for electronic application

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