Nanofiber Aerogel with Rigidity-Flexibility Synergy DOI

Chunmei Li,

Yuan Wang, Jun Guo

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

In aerogel-based thermal insulation materials, the challenge of balancing mechanical properties (rigidity and flexibility) while enhancing performance under extreme temperature humidity conditions persists. This study introduces an innovative biomimetic aerogel design combining features shell-like layered architecture loofah porous microstructures. We developed polyimide/polyvinylidene fluoride (PI/PVDF) nanofiber aerogels with excellent properties. The material can withstand compressive loads up to 1500 times its weight axial rigidity, maintaining radial flexibility 80% strain, thereby achieving a harmonious balance between structural rigidity flexibility. inclusion hydrophobic PVDF nanofibers ensures maintains low conductivity integrity, even changes. multifeature fusion shows great potential for aerospace applications, such as spacecraft protection systems, effectively shielding components from stress during re-entry space missions.

Language: Английский

An Overview of Flame‐Retardant Materials for Triboelectric Nanogenerators and Future Applications DOI Creative Commons
Swati Panda, Sugato Hajra,

Hyeong-Geun Kim

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract Triboelectric nanogenerators (TENGs) have gained significant attention for ability to convert mechanical energy into electrical energy. As the applications of TENG devices expand, their safety and reliability becomes priority, particularly where there is risk fire or spontaneous combustion. Flame‐retardant materials can be employed address these concerns without compromising performance efficiency TENGs. The primary focus this review on flame‐retardant materials, including polymers, biomaterials, liquid aerogels, carbon‐based materials. fundamental properties are elucidated. characteristics each material type described, along with potential boost importance flame retardancy in advancing technology projected from its usage wearable electronics, self‐powered sensors, smart textiles. Current challenges such as compatibility, fabrication complexity, environmental addressed, proposed strategies overcoming them. This underscores significance strengthening functionality devices, paving way widespread adoption across various industries.

Language: Английский

Citations

4
Silicone nanofilament embedded, superhydrophobic polylactic acid composite aerogel DOI Creative Commons
Jie Xu, Stefan Seeger

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160208 - 160208

Published: Feb. 1, 2025

Citations

2
Biomimetic functional Aerogels: From design Strategy, preparation to application advances DOI
Fengyi Wang, Zhixiong Huang, Bo Xu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160511 - 160511

Published: Feb. 1, 2025

Language: Английский

Citations

2
3D printed colloidal Aerogels: Principle, Process, Performance, and perspective DOI
Qingqing Cheng, Zhizhi Sheng, Yafei Ding

et al.

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101456 - 101456

Published: Feb. 1, 2025

Language: Английский

Citations

2
Gelation‐Constrained Freeze‐Casting Fabrication of Ultra‐Homogeneous Nanocomposite Aerogels with Superelasticity and Harsh Environment Tolerance DOI Open Access

Tianyi Zhu,

Debao Wang, Yisha Wang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract Freeze casting is a versatile technique for organizing low‐dimensional building blocks into ordered porous structural materials. However, the freeze‐casting fabrication of materials with robust and topologically elastic skeleton to withstand harsh conditions challenging. Herein, silanized ultra‐homogeneous nanocomposite aerogel fabricated using gelation‐constrained strategy. Diverging from traditional methods employing solution precursor, approach involves process utilizing rational‐designed supramolecular hydrogel as quasi‐solid precursor. The within hydrogel, enclosed in dense hydrogen‐bonded network, effectively mitigate secondary agglomeration caused by ice crystallization concentration enrichment during freeze‐casting. By forming cellular an interconnected nanoparticle resulting aerogels exhibit exceptional mechanical elasticity retaining over 98% height after 10 000 compression cycles, along superior electrical properties showing 78.9% increase conductivity compared conventional aerogels. Wearable piezoresistive sensors these demonstrate outstanding force sensing capabilities, broad linear range (0–17.6 kPa) high sensitivity (1.32 kPa −1 ). When integrated intermediate layer protective garments, offer insulation fire resistance, enabling them endure like repetitive extreme deformations, exposure high‐temperature flames, water‐erosion damages.

Language: Английский

Citations

1
Enhanced thermal performance of 3D hybrid graphene aerogel encapsulating paraffin for battery thermal management DOI
Shuying Wu,

S. Cao,

Haidong Xie

et al.

International Communications in Heat and Mass Transfer, Journal Year: 2024, Volume and Issue: 156, P. 107618 - 107618

Published: May 23, 2024

Language: Английский

Citations

7
Multifunctional Flexible Sensor Based on Cracked Laser-Induced Graphene for Tactile Perception and Self-Healable Applications DOI
Yunhong Zhang,

Yinchuan Zhang,

Mingyuan Sun

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(17), P. 21170 - 21180

Published: Aug. 23, 2024

Flexible sensors are a significant component of flexible electronics for medical activity and human physiology monitoring. However, obtaining multifunctional sensor by simple process is still challenge. Herein, we propose transfer laser-induced graphene (LIG) onto polydimethylsiloxane. The uniform microcracks formed in the LIG layer during process, which enabled sensitive, stable sensing with multiplex functions including stretching, bending, twisting, pressing. properties were investigated. It proved that constructed delivered good performances. BoxLucas1 model, first time, proposed to simulate mechanism perfectly. porous microstructures high-performance sensor. various physical vibration signals motions monitored sensor, proving potential applications fields health movement A touch panel portable signal display system was constructed, sensor's application screen electronics. self-healable also demonstrated.

Language: Английский

Citations

7
High‐Performance Bimodal Temperature/Pressure Tactile Sensor Based on Lamellar CNT/MXene/Cellulose Nanofibers Aerogel with Enhanced Multifunctionality DOI Open Access
Lin Tian,

Fu‐Lin Gao,

Yu‐Xiao Li

et al.

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

Published: Dec. 23, 2024

Abstract The rapid development of thermoelectric‐piezoresistive dual‐mode sensors has opened new avenues for enhancing the functionality, miniaturization, and integration flexible tactile sensors. However, existing research primarily focuses on decoupling temperature pressure responses, which leaves a significant gap in optimizing sensor performance exploring multifunctional applications. To address this limitation, composite aerogel with layered porous structure is developed, integrating carbon nanotubes MXene as conductive materials reinforced cellulose nanofibers. innovative design, characterized by ultra‐low thermal conductivity along superior electrical thermoelectric properties, allows resulting to monitor stimuli without interference through piezoresistive mechanisms. Demonstrated results reveal exceptional sensing capabilities, including minimum detectable variation 0.03 K detection limit 0.3 Pa. exhibits high sensitivities 33.5 µV −1 −45.2% kPa , stability across both stimuli. Furthermore, unique multi‐modal mechanism supports various applications, such energy harvesting, material recognition, complex information transmission, smart wearable devices, electronic skin, human‐computer interaction interfaces. This presents robust solution designing high‐performance dual‐modal significantly advances their practical applications multiple domains.

Language: Английский

Citations

7
Low Shrinkage and Robust Polyimide/Ultrafine Glass Fiber Aerogel for Efficient Heat Resistance and Oil/Water Separation DOI
Song Zhang, Jiahui Sun,

Yijing Jia

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Polyimide (PI) aerogels have attracted a great deal of attention due to their low density and excellent heat resistance. However, PI produce large, irregular shrinkage during the thermal imidization process, resulting in decreased porosity strength. In this work, silane coupling agent-modified ultrafine glass fibers (mUGF) were mixed with polyamide acid solution, followed by freeze-drying prepare PI/mUGF aerogels. As inorganic reinforced phase, mUGF high aspect ratio can significantly enhance skeleton aerogel, reducing its volume avoiding collapse porous structure imidization. The aerogel exhibits (0.059 g/cm3), (18%), good mechanical properties, stability insulation (thermal conductivity as 31.4 mW/m·K at room temperature, 55.9 300 °C). Additionally, also shows adsorption properties (pump oil temperature: 24 g/g; 200 °C: 17 g/g) structural stability, which be used adsorb oils organic solvents from polluted water. These findings promote design development low-shrinkage robust for oil/water separation insulation.

Language: Английский

Citations

1
Double‐Crosslinked Organic–Inorganic Hybrid Polyimide Aerogel Composites with Ultra‐Robust Toughness for Foldable Mechanical‐Thermal‐Coupled Protection DOI Open Access
Jia Chen, Xianbo Hou, Zhilin Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract Aerogels excel in thermal insulation due to their porous structure, but limited mechanical strength restricts broader applications. Thus, the development of aerogel composites for equipment/personnel against and hazards extreme environments necessitates more design paradigm. Herein, a novel double‐crosslinked polyimide composite (PIAC) with an organic–inorganic hybridization approach is prepared. This composite, incorporating amino‐modified SiO 2 nanoparticles reduce shrinkage/density, offers exceptional from ‐110 °C 300 °C, flame resistance, low dielectric constant (1.4), conductivity 0.0357 W (m K) −1 self‐cleaning properties. Meanwhile, PIAC allows be manipulated into various shapes withstand repeated folding unfolding without damage. It boasts tensile 8.5 MPa (2.6‐fold enhancement) nominal elongation at break 54% (17.5‐fold enhancement), representing highest fracture toughness 32.99 × 10 6 kJ m −3 (47.8‐fold observed materials date. With maximum energy absorption reaching 7.46 MJ when dissipating high‐impact forces, its substantial enhancement capacity 60% over predecessor, not only bolster matrix also amplify strain rate strengthening effect. The fabricated poised foldable mechanical‐thermal‐coupled protection where such attributes are highly coveted.

Language: Английский

Citations

1