Thermal ageing studies on room-temperature vulcanised polysiloxane rubbers

Patel, Mogon; Skinner, Anthony R.

doi:10.1016/s0141-3910(01)00118-5

Cited by 90 publications

(45 citation statements)

References 6 publications

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“…Poly(dimethylsiloxane) (PDMS) is a commonly used elastomeric material, which requires the addition of a filler phase to produce a material with many useful physical properties. When such materials are placed in a harsh environment certifying component performance becomes exceedingly challenging as many trends in properties are complex [2,3].…”

Section: Introductionmentioning

confidence: 99%

The stability of polysiloxanes incorporating nano-scale physical property modifiers

Lewicki

Patel

Morrell

et al. 2008

Science and Technology of Advanced Materials

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Reported here is the synthesis and subsequent characterization of the physical and chemical properties of novel polysiloxane elastomers modified with a series of polyhedraloligomericsilsequioxane (POSS) molecular silicas. The physical properties of the formulated nanocomposite systems have been characterized with a combination of dynamic mechanical analysis (DMA), broadband dielectric spectroscopy (BDS) and confocal Raman microscopy. The results of the physical property characterization demonstrate that the incorporation of low levels (1-4% by wt.) of POSS particles into the polysiloxane network leads to significant improvements in the mechanical properties of the elastomer and significantly alters the motional chain dynamics of the system as a whole. The results of studies performed to assess the long-term stability of these novel nanocomposite systems have demonstrated that POSS physical property modifiers can significantly alter the thermal stability of polysiloxane elastomers. Physically dispersed POSS has also been shown in some cases to be both mobile and disruptive within the polysiloxane networks, agglomerating into domains on a micron scale and migrating to the surface of the elastomers. This work demonstrates both the potential of POSS nanoparticles as physical property modifiers and describes the effects of POSS on the physical and chemical stability of polysiloxane systems.

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Section: Introductionmentioning

confidence: 99%

The stability of polysiloxanes incorporating nano-scale physical property modifiers

Lewicki

Patel

Morrell

et al. 2008

Science and Technology of Advanced Materials

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“…Similarly, the maximum value of log-likelihood The log-likelihood equations for the same parameters ( , , ) B α σ in (17) and (20) are similar. Specially, the expressions for the log-like-lihood equations in (17) are calculated by applying (15) and constant activation energy as:…”

Section: Parameter Estimationmentioning

confidence: 91%

“…Tan and Singh [21] found the change of the degradation mechanism among various stress levels in the ADT of light emitting diodes, and they concluded the mechanism variation presented a challenge in the extrapolation of accelerated results to the normal condition. Patel and Skinner [20] reported the change of the underlying degradation process at high temperatures of an ADT of polysiloxane rubbers. Gillen et al [7,8,14] showed the evidence for the variation of degradation mechanism over a sufficiently wide range of temperatures.…”

Section: Science and Technologymentioning

confidence: 99%

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Consistency analysis of degradation mechanism in step-stress accelerated degradation testing

Lu¹,

Chen²,

Wang³

et al. 2017

EiN

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ConsistenCy analysis of degradation meChanism in step-stress aCCelerated degradation testing analiza niezmiennośCi meChanizmu degradaCji w przyspieszonyCh badaniaCh degradaCji z obCiążeniem stopniowymStep-stress accelerated degradation testing (SSADT) Lu X, Chen X, WAng Y, TAn Y. Consistency analysis of degradation mechanism in step-stress accelerated degradation testing. eksploatacja i niezawodnosc -Maintenance and Reliability 2017; 19 (2): 302-309, http://dx

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“…As the reduction in load retention has been observed to occur most rapidly in the first two years of aging, as observed by Schneider [14] and Patel [15], the samples of interested will be tested every month for a total of two years. A test fixture, shown in Figure 7, was designed, which will hold the samples at 30% compression while aging under constant temperature conditions.…”

Section: Long-term Testingmentioning

confidence: 99%