Color adjustable, mechanically robust, flame-retardant and weather-resistant TiO2/MMT/CNF hierarchical nanocomposite coatings toward intelligent fire cyclic warning and protection

Composites Part B Engineering, Journal Year: 2023, Volume and Issue: 271, P. 111159 - 111159

Published: Dec. 21, 2023

Language: Английский

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A Tough Monolithic‐Integrated Triboelectric Bioplastic Enabled by Dynamic Covalent Chemistry

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

Published: Jan. 6, 2024

Abstract Electronic waste is a growing threat to the global environment and human health, raising particular concerns. Triboelectric devices synthesized from sustainable degradable materials are promising electronic alternative, but mechanical mismatch at interface between polymer substrate electrodes remains unresolved in practical applications. This study uses sulfhydryl silanization reaction chemical selectivity site specificity of thiol–disulfide exchange dynamic covalent chemistry prepare tough monolithic‐integrated triboelectric bioplastic. The stress dissipated by bond adaptation interaction, which makes dielectric layer conductive have good adhesion effect (220.55 kPa). interfacial interlocking with gives bioplastic excellent tensile strength (87.4 MPa) fracture toughness (33.3 MJ m −3 ). Even when subjected tension force 10 000 times its weight, it still maintains stable output no visible cracks. provides new insights into design reliable environmentally friendly self‐powered devices, significant for development flexible wearable electronics.

Language: Английский

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Large‐Scale, Mechanically Robust, Solvent‐Resistant, and Antioxidant MXene‐Based Composites for Reliable Long‐Term Infrared Stealth

Advanced Science, Journal Year: 2024, Volume and Issue: 11(17)

Published: Feb. 25, 2024

MXene-based thermal camouflage materials have gained increasing attention due to their low emissivity, however, the poor anti-oxidation restricts potential applications under complex environments. Various modification methods and strategies, e.g., addition of antioxidant molecules fillers been developed overcome this, but realization long-term, reliable using MXene network (coating) with excellent comprehensive performance remains a great challenge. Here, hybrid comodified hyaluronic acid (HA) hyperbranched polysiloxane (HSi) is designed fabricated. Notably, presence appreciated HA oxidation sheets without altering infrared stealth performance, superior other water-soluble polymers; while HSi can act as efficient cross-linking agents generate strong interactions between molecules. The optimized MXene/HA/HSi composites exhibit mechanical flexibility (folded into crane structure), good water/solvent resistance, long-term stable capability (with emissivity ≈0.29). reliability (≈8 months) various outdoor weathers scalable coating MXene-coated textile enable them disguise IR signal targets in environments, indicating promise achieved material for camouflage, stealth, counter surveillance.

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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Rational Design of Oil-Resistant and Electrically Conductive Fluorosilicone Rubber Foam Nanocomposites for Sensitive Detectability in Complex Solvent Environments

ACS Nano, Journal Year: 2024, Volume and Issue: 18(33), P. 22021 - 22033

Published: Aug. 5, 2024

Recent years have witnessed the explosive development of highly sensitive smart sensors based on conductive polymer foam materials. However, design and multifunctional polymeric composites as applied in complex solvent oil environments remain a critical challenge. Herein, we synthesize vinyl-terminated polytrifluoropropylmethylsiloxane through anionic ring-opening polymerization to fabricate fluorosilicone rubber (FSiRF) materials with nanoscale wrinkled surfaces reactive Si-H groups via green rapid chemical foaming strategy. Based strong adhesion between FSiRF consecutive oxidized ketjen black (OKB) nano-network, nanocomposites were prepared by dip-coating strategy followed fluoroalkylsilane modification. The optimized F-OKB@FSiRF exhibit outstanding mechanical flexibility wide-temperature range (100 cycle compressions from -20 200 °C), structure stability (no detached particles after being immersed into various aqueous solutions for up 15 days), surface superhydrophobicity (water contact angle 154° sliding ∼7°), tunable electrical conductivity (from 10

Language: Английский

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Hydrosilylation Adducts to Produce Wide‐Temperature Flexible Polysiloxane Aerogel under Ambient Temperature and Pressure Drying

Small, Journal Year: 2023, Volume and Issue: 20(14)

Published: Nov. 21, 2023

Despite incorporation of organic groups into silica-based aerogels to enhance their mechanical flexibility, the wide temperature reliability modified silicone aerogel is inevitably degraded. Therefore, facile synthesis soft with wide-temperature stability remains challenging. Herein, novel containing a high content Si are reported by using polydimethylvinylsiloxane (PDMVS), hydrosilylation adduct water-repellent groups, as "flexible chain segment" embedded within network. The poly(2-dimethoxymethylsilyl)ethylmethylvinylsiloxane (PDEMSEMVS) fabricated through cost-effective ambient temperature/pressure drying process. optimized exhibits exceptional performance, such ultra-low density (50 mg cm

Language: Английский

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Lightweight, surface hydrophobic and flame-retardant polydimethylsiloxane foam composites coated with graphene oxide via interface engineering

Progress in Organic Coatings, Journal Year: 2024, Volume and Issue: 189, P. 108276 - 108276

Published: Feb. 6, 2024

Language: Английский

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Versatile superhydrophobic magnetic biomass aerogel for oil/water separation and removal of multi-class emerging pollutants

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 345, P. 127371 - 127371

Published: April 4, 2024

Language: Английский

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Facilitate the preparation of naturally modified and self-healing superhydrophobic/superoleophilic biochar-based foams for efficient oil-water separation

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 465, P. 133489 - 133489

Published: Jan. 11, 2024

Language: Английский

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Construction of Conductive Polymer Coatings onto Flexible PDMS Foam Composites with Exceptional Mechanical Robustness for Sensitive Strain Sensing Applications

Advanced Sensor Research, Journal Year: 2024, Volume and Issue: 3(4)

Published: Jan. 31, 2024

Abstract Flexible piezoresistive‐sensing materials with high sensitivity and stable sensing signals are highly required to meet the accurate detecting requirement for human motion. Herein, a conductive poly(3,4‐ethylenedioxythiophene): poly(styrenesulfonate) / polydimethylsiloxane foam (P:P@p‐PSF) composite strong interfacial action is designed. The porous structures good interface combination not only show outstanding mechanical flexibility reliability but also possess at relatively wide strain range. P:P@p‐PSF sensor achieves extreme (Gauge Factor) of 6.25 in subtle range 1%–8%. Furthermore, forms interconnected network induced by serious deformation elastic‐interconnect pores, thus providing extremely sensitive behavior (97.4% resistance change rate 60% compressive strain). Moreover, presents repeatable stability thermal adaptation, which would critical requirements vital signs, motion monitoring, so on. This work supplies insight into design new flexible material overcome weak problem mismatch between filler matrix, showing great application potential field electronic skin.

Language: Английский

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