Muscle‐Inspired Formable Wood‐Based Phase Change Materials

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 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.

Язык: Английский

---

Chemistry in phase change energy storage: Properties regulation on organic phase change materials by covalent bond modification

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153359 - 153359

Опубликована: Июнь 21, 2024

Язык: Английский

---

Mechanically strong, healable, and recyclable supramolecular solid–solid phase change materials with high thermal conductivity for thermal energy storage

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 153235 - 153235

Опубликована: Июнь 17, 2024

Язык: Английский

---

Intrinsically Flexible Phase Change Fibers for Intelligent Thermal Regulation

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Июль 12, 2024

Owing to the significant latent heat generated at constant temperatures, phase change fibers (PCFs) have recently received much attention in field of wearable thermal management. However, materials involved existing PCFs still experience a solid-liquid transition process, severely restricting their practicality as management materials. Herein, we, for first time, developed intrinsically flexible (polyethylene glycol/4,4'-methylenebis(cyclohexyl isocyanate) fibers, PMFs) through polycondensation and wet-spinning exhibiting an inherent solid-solid property, adjustable behaviors, outstanding knittability. The PMFs also present superior mechanical strength (28 MPa), washability (>100 cycles), cycling stability (>2000 facile dyeability, heat-induced recoverability, all which are highly practical applications. Additionally, can be easily recycled by directly dissolving them solvents reprocessing, revealing promising applications sustainable Most importantly, applicability was demonstrated knitting into permeable fabrics, exhibit considerably improved performance compared with cotton fabric. offer great potential intelligent regulation smart textiles electronics.

Язык: Английский

---

Physical‐Entanglements‐Supported Polymeric Form Stable Phase Change Materials with Ultrahigh Melting Enthalpy

Advanced Materials, Год журнала: 2024, Номер 36(30)

Опубликована: Май 8, 2024

With the rapid development of new energy and upgrading electronic devices, structurally stable phase change materials (PCMs) have attracted widespread attentions from both academia industries. Traditional cross-linking, composites, or microencapsulation methods for preparation form PCMs usually sacrifice part enthalpy recyclability. Based on basic polymer viscoelasticity crystallization theories, here, a kind novel recyclable polymeric PCM is developed by simple solution mixing ultrahigh molecular weight polyethylene oxide (UHMWPEO) with its chemical identical oligomer glycol (PEG). Rheological leakage-proof experiments confirm that, even containing 90% fraction PEG oligomers, long-term structure stability can be achieved when UHMWPEO higher than 7000 kg mol

Язык: Английский

---

Flexible and highly thermally conductive phase change materials with hierarchical dual network for thermal management

Chemical Engineering Journal, Год журнала: 2024, Номер 497, С. 154562 - 154562

Опубликована: Авг. 8, 2024

Язык: Английский

---

Continuous Dynamic Chemistry Recombination for Fabricating Recyclable Hydrophilic Lubricating Zwitterionic Polyurethane

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Язык: Английский

---

Intrinsic photothermal block polyurethane solid–solid phase-change materials with high mechanical toughness and multi-recyclability controlled by crosslinking density

Journal of Energy Storage, Год журнала: 2025, Номер 113, С. 115583 - 115583

Опубликована: Янв. 29, 2025

Язык: Английский

---

Ultra-high performance Cu-Al-Ni as phase change material for thermal management of high-power electronic devices

Journal of Energy Storage, Год журнала: 2025, Номер 113, С. 115635 - 115635

Опубликована: Фев. 1, 2025

Язык: Английский

---

Advancing Thermal Safety System for Battery Pack: Introducing Intrinsic Flame‐Retardant Solid–Solid Phase Change Materials with Melamine Crosslink

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract Composite phase‐change materials (CPCMs), with their substantial latent heat storage and release capabilities at a consistent transition temperature, are extensively employed in diverse thermal‐energy‐storage applications. However, the risk of thermal runaway remains significant challenge owing to flammability potential leakage CPCMs. Attempts develop flame‐retardant PCMs using various fireproof polymers through physical methods exist. In this study, novel multifunctional solid–solid material is developed chemical modification process, incorporating polyethylene glycol 2000, boric acid, phosphorus pentoxide (P 2 O 5 ), expanded graphite, ammonium polyphosphate (APP), melamine (MA). This composite exhibits superior flame retardancy stability, making it highly suitable for enhancing safety battery modules. Experimental results demonstrate that PCAM2, containing 20 wt% MA 8 APP, maintains 97.75% mass retention 250 °C h achieves V‐0 rating (burning stops within 10 s) according UL‐94 standard. Moreover, module PCAM2 demonstrated thermal‐management than three other Even after ten cycles 2C discharge rate, maintained peak operating temperature below 60 °C. Notably, CPCM films exhibited propagation time, indicating control ability inhibit runway. The intrinsically study holds considerable promise use next‐generation systems electric‐vehicle packs energy‐storage

Язык: Английский

---