Microchannel‐Assisted Supercritical CO2 Rapid Diffusion Strategy for Efficient Polymethyl Methacrylate (PMMA) Foaming DOI

Zhixian Zhan,

Ruizhi Zhang, Chengshuang Zhou

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 19, 2025

ABSTRACT The slow diffusion rate of supercritical CO 2 in polymer matrices leads to long saturation times, significantly limiting the production efficiency intermittent fluid foaming. In this study, a novel approach is proposed shorten time by designing and constructing micron‐scale interconnected channels within PMMA sheets. sheets (2.4 mm thick) with microchannel structures can achieve foaming approximately 20 min, reduced over 90% compared dense structures. Through experimental simulation analyses, rates different their effects on performance were investigated. microchannel‐assisted strategy not only reduces depth micron scale, shortening time, but also forms aggregation zones sheets, forming bimodal cell structure. optimized foam exhibits low density (0.11–0.15 g cm −3 ), excellent thermal insulation (thermal conductivity 0.0461 W m −1 K unique two‐stage compression stress plateau characteristics. This method provides new insights into improving for industrial applications.

Language: Английский

Microchannel‐Assisted Supercritical CO2 Rapid Diffusion Strategy for Efficient Polymethyl Methacrylate (PMMA) Foaming DOI

Zhixian Zhan,

Ruizhi Zhang, Chengshuang Zhou

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 19, 2025

ABSTRACT The slow diffusion rate of supercritical CO 2 in polymer matrices leads to long saturation times, significantly limiting the production efficiency intermittent fluid foaming. In this study, a novel approach is proposed shorten time by designing and constructing micron‐scale interconnected channels within PMMA sheets. sheets (2.4 mm thick) with microchannel structures can achieve foaming approximately 20 min, reduced over 90% compared dense structures. Through experimental simulation analyses, rates different their effects on performance were investigated. microchannel‐assisted strategy not only reduces depth micron scale, shortening time, but also forms aggregation zones sheets, forming bimodal cell structure. optimized foam exhibits low density (0.11–0.15 g cm −3 ), excellent thermal insulation (thermal conductivity 0.0461 W m −1 K unique two‐stage compression stress plateau characteristics. This method provides new insights into improving for industrial applications.

Language: Английский

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