Ultraflexible, cost-effective and scalable polymer-based phase change composites via chemical cross-linking for wearable thermal management

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Dec. 5, 2023

Phase change materials (PCMs) offer great potential for realizing zero-energy thermal management due to superior storage and stable phase-change temperatures. However, liquid leakage solid rigidity of PCMs are long-standing challenges PCM-based wearable regulation. Here, we report a facile cost-effective chemical cross-linking strategy develop ultraflexible polymer-based phase composites with dual 3D crosslinked network olefin block copolymers (OBC) styrene-ethylene-butylene-styrene (SEBS) in paraffin wax (PW). The C-C bond-enhanced OBC-SEBS networks synergistically improve the mechanical, thermal, leakage-proof properties PW@OBC-SEBS. Notably, proposed peroxide-initiated method overcomes limitations conventional physical blending methods thus can be applicable across diverse polymer matrices. We further demonstrate portable flexible PW@OBC-SEBS module that maintains comfortable temperature range 39-42 °C personal thermotherapy. Our work provides promising route fabricate scalable composite management.

Language: Английский

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A review of battery thermal management systems using liquid cooling and PCM

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 76, P. 109836 - 109836

Published: Nov. 28, 2023

Language: Английский

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Magnetoactive liquid-solid phase transitional matter

Matter, Journal Year: 2023, Volume and Issue: 6(3), P. 855 - 872

Published: Jan. 25, 2023

Language: Английский

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Covalently Functionalized Leakage‐Free Healable Phase‐Change Interface Materials with Extraordinary High‐Thermal Conductivity and Low‐Thermal Resistance

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(30)

Published: April 25, 2023

Phase-change materials (PCMs) have received considerable attention to take advantage of both pad-type and grease-type thermal interface (TIMs). However, the critical drawbacks leaking, non-recyclability, low conductivity (κ) hinder industrial applications PCM TIMs. Here, leakage-free healable TIMs with extraordinarily high κ total resistance (Rt ) are reported. The matrix material (OP) is synthesized by covalently functionalizing octadecanol polyethylene-co-methyl acrylate-co-glycidyl methacrylate polymer through nucleophilic epoxy ring opening reaction. OP changes from semicrystalline amorphous above phase-transition temperature, preventing leaking. hydrogen-bond-forming functional groups in enable nearly perfect healing efficiencies tensile strength (99.7%), (97.0%), Rt (97.4%). Elaborately designed thermally conductive fillers, silver flakes multiwalled carbon nanotubes decorated nanoparticles (nAgMWNTs), additionally introduced (OP-Ag-nAgMWNT). nAgMWNTs bridge silver-flake islands, resulting (43.4 W m-1 K-1 (30.5 mm2 K W-1 compared literature. Excellent heat dissipation recycling demonstration OP-Ag-nAgMWNT also carried out using a computer graphic processing unit. promising future TIM for management mechanical electrical devices.

Language: Английский

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Recyclable Solid–Solid Phase Change Materials with Superior Latent Heat via Reversible Anhydride‐Alcohol Crosslinking for Efficient Thermal Storage

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 17, 2024

Abstract Solid–solid phase change materials (SSPCMs) with crosslinked polymer structures have received sustained interest due to their remarkable shape stability, enabling application independently without the need for encapsulation or supporting materials. However, crosslinking structure also compromises latent heat and poses challenges recyclability. Herein, a novel strategy harnessing internal‐catalyzed reversible anhydride‐alcohol reaction fabricate SSPCMs superior exceptional dual recyclability is presented. Easily accessible anhydride copolymers (e.g., propylene‐maleic alternating copolymers), provide abundant reactive sites within matrix; polyethylene glycol serves as both grafted component crosslinker. The resulting attain peak value of 156.8 J g −1 which surpasses all other reported recyclable SSPCMs. exhibit certain flexibility tunable tensile strength ranging from 6.6 11.0 MPa. Beyond that, leveraging crosslinks, demonstrate through bond‐exchange remolding reversible‐dissociation‐enabled dissolving‐recrosslinking any chemicals. Furthermore, by integrating solar‐thermal conversion fillers like polydopamine nanoparticles, potential system in efficient conversion, storage, release solar energy highlighted.

Language: Английский

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Advanced Phase Change Materials from Natural Perspectives: Structural Design and Functional Applications

Advanced Science, Journal Year: 2023, Volume and Issue: 10(22)

Published: May 25, 2023

Abstract Phase change materials have garnered extensive interest in heat harvesting and utilization owing to their high energy storage density isothermal phase transition. Nevertheless, inherent leakage problems low efficiencies hinder widespread utilization. Nature has served as a great source of inspiration for addressing these challenges. Natural strategies are proposed achieve advanced thermal management systems, breakthroughs made recent years. This review focuses on advances the structural design functions from natural perspective. By highlighting structure–function relationship, applications including human motion, medicine, intelligent devices discussed detail. Finally, views remaining challenges future prospects also provided, that is, advancing around biomimicry spiral.

Language: Английский

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Dual-encapsulated phase change composites with hierarchical MXene-graphene monoliths in graphene foam for high-efficiency thermal management and electromagnetic interference shielding

Composites Part B Engineering, Journal Year: 2023, Volume and Issue: 266, P. 110998 - 110998

Published: Sept. 14, 2023

Language: Английский

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Muscle‐Inspired Formable Wood‐Based Phase Change Materials

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 3, 2024

Phase change materials (PCMs) are crucial for sustainable thermal management in energy-efficient construction and cold chain logistics, as they can store release renewable energy. However, traditional PCMs suffer from leakage a loss of formability above their phase temperatures, limiting shape stability versatility. Inspired by the muscle structure, formable with hierarchical structure solvent-responsive supramolecular networks based on polyvinyl alcohol (PVA)/wood composites developed. The material, its hydrated state, demonstrates low stiffness pliability due to weak hydrogen bonding between aligned wood fibers PVA molecules. Through treatment poly(ethylene glycol) (PEG) into PVA/wood PEG gel (PEG/PVA/W) strengthened bonds, resulting wood-based hard melting states elevate tensile stress 10.14 80.86 MPa 420 4.8 GPa, making it 530 times stiffer than PEG/PVA counterpart. Capable morphing response solvent changes, these enable intricate designs management. Furthermore, supported comprehensive life cycle assessment, shape-adaptable, recyclable, biodegradable lower environmental footprint present alternative conventional plastics materials.

Language: Английский

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Liquid-metal-based magnetic fluids

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 433 - 449

Published: May 15, 2024

Language: Английский

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Next generation phase change materials: State-of-the-art towards sustainable future

Progress in Materials Science, Journal Year: 2024, Volume and Issue: unknown, P. 101380 - 101380

Published: Sept. 1, 2024

Language: Английский

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