Surfactant hydrophilic modification of expanded graphite to fabricate water-based composite phase change material with high latent heat for cold energy storage

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155235 - 155235

Published: Aug. 28, 2024

Language: Английский

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Recent advances in low-temperature phase change materials for cold chain logistics

International Journal of Refrigeration, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Emerging cold energy storage sol for soft freezing of fresh produce in cold chain transportation

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 136151 - 136151

Published: April 1, 2025

Language: Английский

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Enhanced Flame Retardancy and Smoke Suppression of the Silicone Rubber Foam With Low Loading of Modified Expandable Graphite

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

Published: Feb. 22, 2025

ABSTRACT The flame‐retardant silicone rubber foam (SRF) composites were prepared by adding a low loading of expandable graphite modified with γ‐(2,3‐epoxypropoxy)propytrimethoxysilane (EG@KH560). EG@KH560 was characterized Fourier transform infrared (FTIR), X‐ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Meanwhile, the effects on micromorphology, flame retardancy, mechanical properties, thermal stability, combustion behavior SRF/EG@KH560 investigated. results show that compatibility between SRF substrate significantly improved, thereby reducing deterioration tensile compressive strength in composites. composite containing only 2 parts per hundred base polymer (2 phr) exhibited excellent performance, which can pass FV‐0 rating during vertical test high limiting oxygen index (LOI) value 31.2. stability also enhanced, as evidenced notable increase maximum decomposition temperature residues at 900°C. Moreover, total heat release smoke phr reduced 13.1% 61.0% compared pure cone calorimetry test, indicating significant improvement fire safety for addition EG@KH560.

Language: Английский

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Surfactant Hydrophilic Modification of Expanded Graphite to Fabricate Water-Based Composite Phase Change Material with High Latent Heat for Cold Energy Storage

Published: Jan. 1, 2024

Glycine water-based (GW) phase change material (PCM) is considered a promising candidate for cold energy storage due to its cost-effectiveness and high latent heat. However, low thermal conductivity hinders practical application. To improve the mitigate enthalpy loss, GW/MEG materials were synthesized by incorporating modified expanded graphite (MEG) as enhancer. The non-covalent functionalization method was proposed modify EG with surfactant Triton X-100 (TX-100), hydrophilic groups in TX-100 promote formation of hydrogen bonds between MEG GW PCM, thus inhibiting loss materials. results showed significantly improved compatibility demonstrated reduced contact angle from 64.4° 11.3°. prepared composites containing 2 8 wt.% exhibited conductivities ranging 0.8813 1.2837 W/(m·K), representing an increase 46.47% ~ 113.35%. Simultaneously, melting temperature ranged −5.30 −5.70 °C, heat 265.14 285.12 J/g. After 100 cycles, only minor fluctuations (−1.32% +2.22%) (−2.14% −5.61%) observed. Furthermore, application GW/MEG2 strawberries resulted significant reduction pre-cooling time 56.60% compared ice storage; under refrigeration, maintained small fluctuation range 1.54 3.39 °C up 17.86 h. This study provides effective solution short-distance transportation perishable food within chain logistics system.

Language: Английский

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Preparation and Study of N-Tridecane@Silica Low-Temperature Nano-Encapsulated Phase Change Microcapsules

Published: Jan. 1, 2024

Language: Английский

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Novel water-based composite phase change materials for cold energy storage applications

Renewable Energy, Journal Year: 2024, Volume and Issue: unknown, P. 122174 - 122174

Published: Dec. 1, 2024

Language: Английский

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