Measurement and Calculation of Mechanical Properties of Silicone Rubber

Муслов, С. А.; Polyakov, D. I.; Лотков, А. И.; Stepanov, Alexander G.; Arutyunov, S. D.

doi:10.1007/s11182-021-02201-z

Cited by 14 publications

(7 citation statements)

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“…Under such circumstances, the introduction of AF likely causes heavy fiber entanglement, thereby resulting in uneven distribution of fillers which impairs the enhancement of tensile properties. The modulus of elasticity is derived from the stress‐strain curves 49 . The elongation at the break and the modulus of elasticity for HFRC display an overall negative correlation because the modulus reflects the physical crosslinking density and a lower modulus indicates a relatively lower physical crosslinking density 50 …”

Section: Resultsmentioning

confidence: 99%

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Improving the ablative performance of epoxy‐modified vinyl silicone rubber composites by incorporating different types of reinforcing fibers

Zhang,

Huang,

Xing

et al. 2024

Polymer Composites

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In this study, ablative resistance of single fiber‐ and hybrid fiber‐reinforced epoxy‐modified vinyl silicone rubber (EMVSR) composites was systematically studied. Three types of fibers, namely aramid fiber (AF), basalt fiber (BF), and carbon fiber (CF), were employed as the reinforcements. The results indicated that the incorporation of fiber reinforcements effectively suppressed the expansion and strengthened the char layer. Besides, the quality of char layer was quite different when different types of fibers were used. The char layer of AF‐modified samples had more surface defects, BF‐modified samples were brittle, and CF‐filled samples were dense and flat. The use of hybrid AF/BF fibers improved the ablation and anti‐erosion performance of EMVSR. Meanwhile, the thermal insulation performance was enhanced because the back‐face temperature was the lowest with the addition of 1 phr AF and 5 phr CF. The above results indicated that the ablation and anti‐erosion resistance and the quality of char layer as well as the thermal insulation behavior of EMVSR were significantly improved by incorporating fibrillar fillers, which demonstrate practical applications as flexible anti‐ablation materials for thermal protection systems.Highlights Epoxy‐modified vinyl silicone rubber was used for preparing ablative composites. The effect of adding different fibers on the ablation properties was studied. The presence of single fibers improved the strength of char layer. The use of hybrid fibers was found effective in enhancing the ablative properties. The intrinsic property and entanglement of fibers affected the ablative properties.

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Section: Resultsmentioning

confidence: 99%

“…The modulus of elasticity is derived from the stress-strain curves. 49 The elongation at the break and the modulus of elasticity for HFRC display an overall negative correlation because the modulus reflects the physical crosslinking density and a lower modulus indicates a relatively lower physical crosslinking density. 50…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Improving the ablative performance of epoxy‐modified vinyl silicone rubber composites by incorporating different types of reinforcing fibers

Zhang,

Huang,

Xing

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…The silicone rubber specimens were taken from the wall of the soft‐elastic vessel tested until fracture and the stress–strain curves obtained (see Figure 5). Calculated according to the standard, 27 the tensile strength was

2.35 \times 10^{6}

1 \times 10^{5}

Pa and the tensile fracture was 218.2 ± 38.9% (mean ± SD). The indentation hardness test, where an indenter induces a localized deformation into a sample surface, has been used, which is a relatively simple technique for assessing material properties such as hardness and elastic modulus 28 .…”

Section: Resultsmentioning

confidence: 99%

Viscous flow through a thin‐walled elastic hollow ellipsoid—Experiments to demonstrate a potential flowmeter

Zhu

Chen

2023

Asia-Pacific J Chem Eng

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Large deformation of an elastic hollow ellipsoid may be used as the mechanism of a flowmeter. It is seen as being inspired by human biology, when passing through fluid internally. The investigation on this potential was carried out where simply the relationships among pressure drop across an ellipsoid, deformation, flowrate and fluid viscosity were obtained. The elastic hollow ellipsoid was made from Silicone, which has a long axis of 0.05 m, a short axis of 0.03 m, and a wall thickness of 3.5 × 10−4 ± 4.6 × 10−5 m. A monotonic relationship between fluid flowrate and a representative diameter of the ellipsoid was found. Sodium carboxymethyl cellulose (CMC) aqueous solutions were used as a more viscous media so the effect of viscosity was explored. Unlike the firm result on flowrate gauging, it was inconclusive on differentiating the effect of viscosity. When the inlet and the outlet of the fluid were switched over, the geometrical expansion of the ellipsoid was found to be sensitive to the small spatial variation of wall thickness (a non‐uniformity caused by manufacturing limitation). Nevertheless, this work has demonstrated an interesting flowmeter and further explorations on viscosity effect may be warranted.

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“…S1) and matched with previous reports. 21 The cell stack was modeled with a lumped mechanical model, which has been shown to be a good approximation. 22 All materials are linear elastic materials.…”

Section: Methodsmentioning

confidence: 99%

Bridging the Gap Between Pouch and Coin Cell Electrochemical Performance in Lithium Metal Batteries

Soulen,

Lam,

Holoubek

et al. 2024

J. Electrochem. Soc.

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In lithium metal battery research, coin cells (CC) are the most widely used laboratory instrument in academic settings. However, results thus obtained often don’t translate into pouch cell (PC) performance, which is regarded as a more reliable indicator for commercial relevance. Using both experimental and computational results, we show here that the root cause lies in the pressure distribution in these two cell formats. CCs suffer from a severe pressure inhomogeneity due to the geometry of the wave spring used to apply pressure to the cell stack. Replacing the wave spring with an elastic rubber disc applies a laterally uniform force to the cell stack, resulting in a homogeneous pressure distribution. Li || Cu half cells and Cu || LiNi0.5Mn0.3Co0.2O2 anode-free full cells using the updated structure show performance metrics on par with chemically identical PCs while traditional CCs underperform. Our solution to this common problem retains the quick, easy fabrication of CCs while producing results comparable to the PC-level.

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Measurement and Calculation of Mechanical Properties of Silicone Rubber

Cited by 14 publications

References 0 publications

Improving the ablative performance of epoxy‐modified vinyl silicone rubber composites by incorporating different types of reinforcing fibers

Improving the ablative performance of epoxy‐modified vinyl silicone rubber composites by incorporating different types of reinforcing fibers

Viscous flow through a thin‐walled elastic hollow ellipsoid—Experiments to demonstrate a potential flowmeter

Bridging the Gap Between Pouch and Coin Cell Electrochemical Performance in Lithium Metal Batteries

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