Fluorosilane modification on BaTiO3 particles: A facile method to fabricate PVDF dielectric composites with desirable mechanical properties DOI

Yuqi Shi,

Junhang Tang,

Qiuyue Chen

et al.

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(17), P. 16179 - 16192

Published: Aug. 13, 2024

Abstract Dielectric capacitors have attracted much attention due to their excellent power density and long service life. Its development trend is mainly towards miniaturization, lightweight, integration. In this work, barium titanate (BaTiO 3 , BT) particles were modified by four different coupling agents then introduced in polyvinylidene fluoride (PVDF) matrix prepare PVDF/BT dielectric composites. Thermodynamic, dielectric, mechanical, rheological properties researched. After the combination of surface‐modified BT PVDF, constant ( ≈ 33) composites increased 4–5 times compared PVDF = 7.8), loss also was obviously reduced. One remarkable thing that modification 1H,1H,2H,2H‐perfluorooctyltriethoxysilane (F8261) could improve mechanical significantly, especially toughness. For example, impact strength PVDF/F8261‐BT (12.8 kJ/m 2 ) 103.1% higher than PVDF/KH550‐BT (6.3 ), even 13.3% (11.3 ). This simple preparation method a good grafting tactic has positive effect on toughness Highlights A for enhancing Comparing effects F8261 can significantly PVDF/BT. with 30 vol% filler 34.5 at 10 Hz.

Language: Английский

Heterointerface engineering of polymer-based electromagnetic wave absorbing materials DOI Open Access
Shan Liu,

Dengfeng Zhou,

Fang Huang

et al.

Soft Science, Journal Year: 2025, Volume and Issue: 5(1)

Published: Jan. 18, 2025

Heterointerface engineering has drawn considerable interest in tuning interfacial polarization and promoting impedance matching. Therefore, it become a key strategy for optimizing electromagnetic wave (EMW) absorption. This comprehensive review primarily focused on the EMW absorbing strategies of polymer-based materials, emphasizing critical developments heterointerface engineering. A possible mechanism materials was proposed, synergism multi-components, microstructure design, Key innovations structural design such as porous structure, multilayered segregated structure are explored, highlighting their contributions to enhancing Also, highlights latest research progress advanced conductive insulating with desirable absorption performance; fabrication methods, structures, properties, mechanisms were elucidated detail. challenges presented followed by some future perspectives.

Language: Английский

Citations

4
Unveiling the potential of PVDF@LaFeO 3 based flexible composite films towards high performance broad band EMI shielding DOI Creative Commons

G. M. Mamatha,

Pradipkumar Dixit,

R. Hari Krishna

et al.

Materials Technology, Journal Year: 2025, Volume and Issue: 40(1)

Published: Jan. 3, 2025

The present study deals with development of optimized polyvinylidene difluoride (PVDF)-based flexible composite thin film magnetic filler (LaFeO3) and conductive fillers-graphene multi-walled carbon nanotubes (MWCNT). performance developed PVDF-based films has been tested for EMI SE over a wide band ranging from 8.2 to 12.4 GHz 18 covering X Ku band. work carried out using experimental setup based on ASTM D5568 standard measurements the investigation extended validate lightweight, flexible, polymer finite element analysis (FEA) simulation software ANSYS HFSS. In both results, composed 5 wt.% LaFeO3, MWCNT 25 graphene unveiled better compared bare PVDF only conducting graphene.

Language: Английский

Citations

1
Development of a PVDF/1D–2D nanofiller porous structure pressure sensor using near-field electrospinning for human motion and vibration sensing DOI Creative Commons
Ravinder Reddy Kisannagar, Jaehyuk Lee, Yoonseok Park

et al.

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Flexible pressure sensors with multifunctional capabilities are crucial for a wide range of applications, including health monitoring, human motion detection, soft robotics, tactile sensing, and machine vibration monitoring.

Language: Английский

Citations

0
Fluorosilane modification on BaTiO3 particles: A facile method to fabricate PVDF dielectric composites with desirable mechanical properties DOI

Yuqi Shi,

Junhang Tang,

Qiuyue Chen

et al.

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(17), P. 16179 - 16192

Published: Aug. 13, 2024

Abstract Dielectric capacitors have attracted much attention due to their excellent power density and long service life. Its development trend is mainly towards miniaturization, lightweight, integration. In this work, barium titanate (BaTiO 3 , BT) particles were modified by four different coupling agents then introduced in polyvinylidene fluoride (PVDF) matrix prepare PVDF/BT dielectric composites. Thermodynamic, dielectric, mechanical, rheological properties researched. After the combination of surface‐modified BT PVDF, constant ( ≈ 33) composites increased 4–5 times compared PVDF = 7.8), loss also was obviously reduced. One remarkable thing that modification 1H,1H,2H,2H‐perfluorooctyltriethoxysilane (F8261) could improve mechanical significantly, especially toughness. For example, impact strength PVDF/F8261‐BT (12.8 kJ/m 2 ) 103.1% higher than PVDF/KH550‐BT (6.3 ), even 13.3% (11.3 ). This simple preparation method a good grafting tactic has positive effect on toughness Highlights A for enhancing Comparing effects F8261 can significantly PVDF/BT. with 30 vol% filler 34.5 at 10 Hz.

Language: Английский

Citations

2