Self‐Adhesive Polydimethylsiloxane Foam Materials Decorated with MXene/Cellulose Nanofiber Interconnected Network for Versatile Functionalities

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(48)

Published: July 17, 2023

Abstract Polydimethylsiloxanes (PDMS) foam as one of next‐generation polymer materials shows poor surface adhesion and limited functionality, which greatly restricts its potential applications. Fabrication advanced PDMS with multiple functionalities remains a critical challenge. In this study, unprecedented self‐adhesive are reported worm‐like rough structure reactive groups for fabricating multifunctional nanocomposites decorated MXene/cellulose nanofiber (MXene/CNF) interconnected network by facile silicone foaming dip‐coating strategy followed silane modification. Interestingly, such produces strong interfacial the hybrid MXene/CNF nano‐coatings. Consequently, optimized have excellent super‐hydrophobicity (water contact angle ≈159 o ), tunable electrical conductivity (from 10 −8 to S m −1 stable compressive cyclic reliability in both wide‐temperature range −20 200 C) complex environments (acid, sodium, alkali conditions), outstanding flame resistance (LOI value >27% low smoke production rate), good thermal insulating performance reliable strain sensing various stress modes environmental conditions. It provides new route rational design development versatile multifunctionalities promising applications intelligent healthcare monitoring fire‐safe insulation.

Language: Английский

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Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(17)

Published: Feb. 9, 2024

The development of highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application 5G communication technology military fields. This work uses aramid nanofibers (ANF) as matrix, hetero-structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by situ growth fillers, which are combined to fabricate sandwich structured electrically insulating (BNNS/ANF)-(AgNWs@BNNS)-(BNNS/ANF) (denoted BAB) composite films "filtration self-assembly, air spraying, hot-pressing" method. When mass ratio AgNWs@BNNS BNNS is 1 : total fraction 50 wt %, BAB film maximum in-plane thermal conductivity coefficient (λ

Language: Английский

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Silane modified MXene/polybenzazole nanocomposite aerogels with exceptional surface hydrophobicity, flame retardance and thermal insulation

Composites Communications, Journal Year: 2022, Volume and Issue: 37, P. 101402 - 101402

Published: Nov. 13, 2022

Language: Английский

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Recent advances in thermal-conductive insulating polymer composites with various fillers

Composites Part A Applied Science and Manufacturing, Journal Year: 2023, Volume and Issue: 178, P. 107998 - 107998

Published: Dec. 31, 2023

Language: Английский

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Self-standing boron nitride bulks enabled by liquid metals for thermal management

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(12), P. 5656 - 5665

Published: Jan. 1, 2023

Thermally conductive materials (TCMs) are highly desirable for thermal management applications to tackle the "overheating" concerns in electronics industry. Despite recent progress, development of high performance TCMs integrated with an in-plane conductivity (TC) higher than 50.0 W (m K)-1 and a through-plane TC greater 10.0 is still challenging. Herein, self-standing liquid metal@boron nitride (LM@BN) bulks ultrahigh were reported first time. In LM@BN bulks, LM could serve as bonding linker among oriented BN platelets, thus remarkably accelerating heat transfer across whole system. Benefiting from formation unique structure, bulk achieved 82.2 20.6 K)-1, which highest values ever TCMs. Furthermore, exhibited superior compressive leakage-free performances, strength (5.2 MPa) without any leakage even after being crushed. It was also demonstrated that excellent TCs made them effectively cool high-power light emitting diode modules. This work opens up one promising pathway high-performance

Language: Английский

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Synergetic Effect of α-ZrP Nanosheets and Nitrogen-Based Flame Retardants on Thermoplastic Polyurethane

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(13), P. 17054 - 17069

Published: March 21, 2023

A supramolecular self-assembly method was used to prepare melamine cyanurate/α-ZrP nanosheets (MCA@α-ZrP) as a novel hybrid flame retardant for thermoplastic polyurethane (TPU). Microstructure characterization showed uniform dispersion with strong interfacial strength of the MCA@α-ZrP within TPU matrix, leading simultaneous enhancements in both mechanical and fire-safety properties. The TPU/MCA@α-ZrP nanocomposite exhibited 43.1 47.0% increments tensile fracture energy, respectively. Thanks platelike structure α-ZrP coupled dilution effect MCA (releasing nonflammable gases), reduced peak heat release rate by 49.7% comparison 15.8 35.4% TPU/MCA TPU/ composites, fire performance index is significantly promoted 90% upon adding hybrid. Additionally, LOI UL-94 tests high flame-retarding characteristics For example, increased from 20.0% neat 25.5% system, it rated V-1 test. Furthermore, smoke production pyrolysis products were suppressed into TPU. Interfacial hydrogen bonding, MCA, forming "labyrinth" layer, catalytic action synergistically improved retardancy nanocomposites. This work provides new example integrating traditional retardants functional develop polymeric nanocomposites

Language: Английский

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Facile fabrication of low-content surface-assembled MXene in silicone rubber foam materials with lightweight, wide-temperature mechanical flexibility, improved flame resistance and exceptional smoke suppression

Composites Part A Applied Science and Manufacturing, Journal Year: 2023, Volume and Issue: 177, P. 107907 - 107907

Published: Nov. 17, 2023

Language: Английский

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Recent progress on MXene-based advanced nanocomposite materials for thermal radiation protection and fire safety

Advanced Nanocomposites, Journal Year: 2024, Volume and Issue: 1(1), P. 217 - 239

Published: Jan. 1, 2024

As a member of the two-dimensional materials' family, MXene sheets exhibit unique structure and outstanding functional properties, garnering extensive interest in many emerging fields. Among them, derivatives with low emissivity inorganic feature have positioned them as promising candidates for thermal camouflage fire safety. Nevertheless, present literature still lacks comprehensive comparative review focused on both radiation protection safety advanced MXene-based nanocomposite materials. This paper is dedicated to offering an overview recent advances progress empowering nanocomposites context synthesis operational principle, structural characteristics, multifunctional performance emergent applications. Special emphasis placed reviewing camouflaging (infrared stealth), flame-retardant (passive) early warning (active) understand relationships between material compositions, fabricating process, multi-scale structures multiple functionalities. Finally, future challenge direction applications are discussed analyzed.

Language: Английский

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Highly Thermally Conductive Aramid Nanofiber Composite Films with Synchronous Visible/Infrared Camouflages and Information Encryption

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(17)

Published: Feb. 9, 2024

Abstract The development of highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application 5G communication technology military fields. This work uses aramid nanofibers (ANF) as matrix, hetero‐structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by situ growth fillers, which are combined to fabricate sandwich structured electrically insulating (BNNS/ANF)‐(AgNWs@BNNS)‐(BNNS/ANF) (denoted BAB) composite films “filtration self‐assembly, air spraying, hot‐pressing” method. When mass ratio AgNWs@BNNS BNNS is 1 : total fraction 50 wt %, BAB film maximum in‐plane thermal conductivity coefficient ( λ ∥ 10.36 W/(m ⋅ K)), excellent electrical insulation (breakdown strength volume resistivity 41.5 kV/mm 1.21×10 15 Ω cm, respectively) mechanical properties (tensile 170.9 MPa). % could efficiently reduce equilibrium temperature central processing unit (CPU) working at full power, resulting 7.0 °C lower than CPU solely integrated ANF directly. In addition, boasts adaptive dual on cement roads jungle environments, well function fast QR code within 24 seconds.

Language: Английский

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Electromagnetic Interference (EMI) Shielding, Electrical, Thermal, and Mechanical Properties of Silanized Hexagonal Boron Nitride (h-BN) Heterostructures‏ and Decorated by Ag Nanoparticles: Towards Smart Coatings

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179561 - 179561

Published: March 1, 2025

Language: Английский

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