3D Porous Thermoplastic Polyurethane/Carbon Nanotube@Silver Nanoparticle Foam with Multidimensional Conductive Networks for Flexible Electronic Sensing

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Язык: Английский

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Lightweight Polyurethane–Polythiophene–MWCNT Nanocomposite Foams With Enhanced Electromagnetic Interference Shielding Efficiency and Mechanical, Thermal, and Electrical Properties

International Journal of Polymer Science, Год журнала: 2025, Номер 2025(1)

Опубликована: Янв. 1, 2025

Electromagnetic interference (EMI) has been recognized as a new sort of pollution and can be considered the direct electromagnetic waves among electronic equipment that frequently affects their typical efficiency. Herein, nanocomposite foams based on polyurethane (PU) reinforced with polythiophene‐multiwalled carbon nanotube (PTh‐CNT) hybrids are developed. The microstructure, mechanical, EMI shielding properties PU/PTh‐CNT were investigated. FTIR analysis demonstrated chemical structure PU was not changed by PTh‐CNT hybrids. composite show good effectiveness (SE), which exhibits 45% higher SE compared to pure PU. introduction in foam increased tensile strength (34% improvement) thermal stability (20°C increase) PTh CNT at unique content due effect PTh. developed PTh‐CNT/PU promising candidates for use aerospace, automotive, or telecommunication applications.

Язык: Английский

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Composite bead foam with segregated structure for high EMI absorption characteristic by one-step foaming and sinter molding

Sustainable materials and technologies, Год журнала: 2025, Номер unknown, С. e01361 - e01361

Опубликована: Март 1, 2025

Язык: Английский

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High-Performance Electromagnetic Interference Shielding and Photothermal Superhydrophobicity Achieved by Nuclear Sheath Stacking in Three-Dimensional Honeycomb Structure and Multi-Level Heterogeneous Interfaces

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

The unpredictable and extremely cold weather conditions, combined with increasing electromagnetic pollution, have posed a serious threat to human health socioeconomic well-being. However, existing deicing technologies interference (EMI) materials lack adaptability low-temperature, high-humidity environments. This study developed lightweight asymmetric layered composite foam by integrating multilevel core-shell structures heterogeneous fillers into melamine (MF) matrix. Designed leverage the differences in conductivity dielectric constant between multiscale interfaces, this enhances movement of free electrons relative displacement atomic nuclei, thereby achieving efficient polarization conduction losses. More than that, unique feature lies its ″absorption-absorption-reflection-reabsorption″ structure, enabling achieve an EMI shielding effectiveness 70.7 dB X-band (8.2-12.4 GHz) absorption efficiency 79.8%. Benefiting from destructive waves within (MHC-MNPF-ACN) exhibits superior absorption-dominated performance excellent frequency selectivity. Additionally, anchoring dual-size onto MF skeleton via impregnation adsorption form honeycomb-like 3D ″light-trapping″ network. not only allows reach 93.6 °C under 1 sun, rapid 160 s but also endows it superhydrophobicity mechanical properties. These features provide novel multifunctional integrated approach fabrication frequency-selective, materials, proposing new strategy for protection outdoor facilities low-temperature

Язык: Английский

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Advanced Modular Honeycombs with Biomimetic Density Gradients for Superior Energy Dissipation

Biomimetics, Год журнала: 2025, Номер 10(4), С. 221 - 221

Опубликована: Апрель 3, 2025

The honeycomb configuration has been widely adopted in numerous sectors owing to its superior strength-to-weight ratio, rigidity, and outstanding energy absorption properties, attracting substantial academic attention research interest. This study introduces a biomimetic modular inspired by the variable-density biological enhancement characteristics of tree stem tissues. examined out-of-plane compressive behavior mechanical structures. A numerical model was constructed utilizing finite element technology, enabling simulation studies at varying impact velocities. improved weight-bearing impact-absorbing properties structures are investigated using theoretical analysis computer simulations. It also scrutinizes effects boundary matching conditions on honeycomb’s performance. results indicate that adjusting thickness walls both matrix sub-honeycomb can substantially improve their resistance low-velocity compression impacts. Furthermore, capacity honeycombs during high-velocity impacts is significantly influenced multiple factors: velocity, density structure, distribution wall within primary matrix. Notably, with an optimally designed structure demonstrates high-speed compared conventional equivalent density. These insights underscore potential for advanced designs further advance material performance structural applications.

Язык: Английский

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Innovative crosslinking and foaming Strategies for Advancing biodegradable composite foams: Enhancing Foamability, Flexibility, and thermal insulation

Materials & Design, Год журнала: 2025, Номер unknown, С. 113895 - 113895

Опубликована: Апрель 1, 2025

Язык: Английский

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Pore‐Gradient, Flexible, and Fully‐Degradable Foam with Outstanding Noise Absorption and Thermal Insulation

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

Abstract With the increasing frequency of extreme cold conditions and emphasis on sustainable economic development, there is an escalated demand for eco‐friendly fabrication thermal insulation noise absorption materials. These materials must strike optimal balance, effectively minimizing excessive loss heat from internal spaces while simultaneously mitigating intrusion external industrial activities. The existing uniform cellular structures exhibit limited capabilities. Herein, inspired by natural gradient structures, a robust biodegradable foam that integrates continuous cell structure excellent directly designed via pioneering Pre‐N 2 foaming strategy. Through modulation physical blowing agent type in first stage incomplete adsorption time gas second stage, concentration can be established, facilitating formation foams. lightweight achieves remarkable coefficient 0.83. In comparison to foam, gradient‐structured shows 74% improvement ball rebound resilience. Notably, its biodegradability 600% higher than structure. controllable synthesis foams opens promising avenue development multifunctional

Язык: Английский

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Interface-Reinforced Segregated Conductive Networks in HDPE via In Situ Polyaniline Polymerization on Edge-Oxidized Graphene

ACS Applied Polymer Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Язык: Английский

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A novel in-situ fibrillation enhancement strategy to achieve super-elastic green foam with enhanced biodegradation

Journal of environmental chemical engineering, Год журнала: 2024, Номер unknown, С. 114642 - 114642

Опубликована: Окт. 1, 2024

Язык: Английский

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Fabrication of polypropylene/carbon fiber/carbon black composite foam bonded with continuous carbon fiber reinforced polypropylene prepregs via high-pressure foam injection molding

Composites Part B Engineering, Год журнала: 2024, Номер unknown, С. 112006 - 112006

Опубликована: Ноя. 1, 2024

Язык: Английский

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