Theoretical investigation on the EPR parameters for VO2+ doped ZnO–CdS nanocomposites

Zhu, Quanshui; Li, Yadong; Chen, Baojin; Zhang, Huaming

doi:10.1140/epjd/e2019-100312-4

Cited by 4 publications

(2 citation statements)

References 49 publications

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“…Supercritical carbon dioxide (sc‐CO 2 ) foaming technology has attracted significant interest due to its numerous advantages including abundant source availability, no residual by‐product and environmental friendliness in comparison to chemical foaming methods 13,14 . The foaming process can be effortlessly controlled and produce uniform cell structure 15 . Additionally, the remarkable high solubility of CO 2 in silicone elastomers has induced several researchers to utilize sc‐CO 2 foaming technology in generating SRF 16–19 .…”

Section: Introductionmentioning

confidence: 99%

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO₂ foaming technology

Li,

Wei,

et al. 2024

J of Applied Polymer Sci

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In this work, a facile in situ precuring and supercritical CO2 (sc‐CO2) foaming technology is proposed to fabricate silicone rubber foam (SRF) with a tunable cell structure. Uncured silicone rubber is put into the autoclave to saturate sc‐CO2 directly, which not only shorts the saturation time but also accelerates the curing reaction in the precuring process. In the foaming process, cell nucleation is triggered by rapid release of pressure. The cell structure of SRF samples with cell size range of 9.45 to 128.09 μm, cell density range of 3.5 × 105 cells/cm3 to 5.7 × 108 cells/cm3, and porosity range of 28.35% to 77.28% are successfully fabricated by controlling of precuring time, saturation pressure and foaming temperature. To guarantee the dimensional stability and optimize surface quality of SRF samples, in situ post‐curing process is implemented within the foaming mold. With the increase of cell size from 9.91 to 128.09 μm, the compressive stress at strain of 75% decreases from 2.19 to 0.61 MPa, while the energy loss coefficient reduces from 35.4% to 16.9%, exhibiting excellent compression recovery steady. The new technique integrates the precuring, foaming process and post‐curing into an autoclave to simplify the SRF procedure.

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Section: Introductionmentioning

confidence: 99%

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO₂ foaming technology

Li,

Wei,

et al. 2024

J of Applied Polymer Sci

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“…Microcellular polymers are usually defined as a foam with the cells in the orders of several tens of microns in size and the cell density higher than 10 9 cells/cm 3 6–8 . The microcellular foams have outstanding mechanical performance, better thermal insulation, and so on 9–11 . However, the preparation of PA6 microcellular foaming is difficult because it requires high melt strength and efficient cell nucleation efficiency 12,13 …”

Section: Introductionmentioning

confidence: 99%

Influence of fibrillated poly(tetrafluoroethylene) on microcellular foaming of polyamide 6 in the presence of supercriticalCO₂

Han

Jiang

et al. 2021

J of Applied Polymer Sci

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In this article, PA6/poly(tetrafluoroethylene) (PTFE) composites were prepared by internal mixer with high rotor speed. The existence of PTFE nano‐fibrillation network structure was observed by scanning electron microscopy (SEM) analysis. The effect of PTFE on crystallization and rheological behavior of PA6 was evaluated. The result showed that the PTFE fibrils improved the crystallization properties of PA6 and do not change the crystal structure. The PTFE effectively enhanced the melt strength of PA6 by fibrillation. The PA6/PTFE composites were then foamed assisted by supercritical CO2. The PTFE was used as cell nucleating agent, crystal nucleating agent and melt strength enhancement agent in the foaming process. Finally, the microcellular PA6 foams were successfully obtained with the cell density higher than 109 cells/cm3, the cell size of ca. 14 μm and the volume expansion ratio of 16.

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On the Dynamics of Correlations in 2 ⊗ 3 Heisenberg Chains with Inhomogeneous Magnetic Field

2023

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Theoretical investigation on the EPR parameters for VO2+ doped ZnO–CdS nanocomposites

Cited by 4 publications

References 49 publications

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO₂ foaming technology

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO₂ foaming technology

Influence of fibrillated poly(tetrafluoroethylene) on microcellular foaming of polyamide 6 in the presence of supercriticalCO₂

On the Dynamics of Correlations in 2 ⊗ 3 Heisenberg Chains with Inhomogeneous Magnetic Field

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Theoretical investigation on the EPR parameters for VO2+ doped ZnO–CdS nanocomposites

Cited by 4 publications

References 49 publications

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO2 foaming technology

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO2 foaming technology

Influence of fibrillated poly(tetrafluoroethylene) on microcellular foaming of polyamide 6 in the presence of supercriticalCO2

On the Dynamics of Correlations in 2 ⊗ 3 Heisenberg Chains with Inhomogeneous Magnetic Field

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A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO₂ foaming technology

A facile and efficient strategy for fabrication of silicone rubber foam based on in situ precuring‐supercritical CO₂ foaming technology

Influence of fibrillated poly(tetrafluoroethylene) on microcellular foaming of polyamide 6 in the presence of supercriticalCO₂