Composites Communications, Год журнала: 2025, Номер unknown, С. 102495 - 102495
Опубликована: Июнь 1, 2025
Язык: Английский
Macromolecular Rapid Communications, Год журнала: 2023, Номер 45(4)
Опубликована: Ноя. 6, 2023
Abstract Flexible dielectrics with large dielectric constant ( ε ′) coupled low loss are highly pursued in many applications. To bolster the ′ of raw Zn (zinc)/poly(vinylidene fluoride, PVDF) while maintaining pimping loss, this study, core@double–shell structured Zn@zinc carbonate (ZnCH)@polystyrene (PS) particles first synthesized through a suspension polymerization styrene, and then composited PVDF to elevate keep composites. By optimizing PS shells’ thickness tailoring electrical resistivity Zn@ZnCH@PS particles, both slow inter‐particle polarization fast intra‐particle composites can be decoupled synergistically tuned, thus, Zn@ZnCH@PS/PVDF achieves much higher lower simultaneously, which far exceed unmodified Zn/PVDF. Both experiment theoretic calculation reveal that double‐shell ZnCH@PS not only induces promotes multiple polarizations enhancing composites’ ′, especially at optimized PS's thickness, but also maintains suppressed conductivity thanks their obvious barrier effect on long‐range charge migration. The filler design strategy facilitates development polymer desirable properties for applications electronic power systems.
Язык: Английский
Процитировано
61
Composites Part A Applied Science and Manufacturing, Год журнала: 2023, Номер 169, С. 107495 - 107495
Опубликована: Фев. 26, 2023
Язык: Английский
Процитировано
60
Polymers, Год журнала: 2023, Номер 15(18), С. 3786 - 3786
Опубликована: Сен. 16, 2023
This review article provides an exhaustive survey on experimental investigations regarding the thermal stability assessment of polymers and polymer-based composites intended for applications in aeronautical space fields. aims to: (1) come up with a systematic critical overview state-of-the-art knowledge research various composites, such as polyimides, epoxy carbon-filled composites; (2) identify key factors, mechanisms, methods, challenges that affect temperature, radiation, oxygen, degradation; (3) highlight current potential applications, benefits, limitations, opportunities high stability, control, structural reinforcement, protection, energy conversion; (4) give glimpse future directions by providing indications improving novel materials, hybrid smart advanced processing methods. In this context, analysis plays crucial role development polyimide-based materials radiation shielding solar cells or spacecraft components. The main strategies have been explored to improve processability, optical transparency, resistance without compromising their are highlighted. combination different types linear hyperbranched, well incorporation bulky pendant groups, reported routes mechanical behavior transparency while retaining properties. Furthermore, polymer/carbon nanocomposites is discussed particular reference filler monitoring systems electromagnetic interference environment. Finally, epoxy-based how it influenced type content resin, curing agent, degree cross-linking, addition fillers modifiers critically reviewed. Some studies incorporating mesoporous silica micro-filler microencapsulated phase change (MPCM) into resin can enhance its composite exhibited highest glass transition temperature activation degradation among all epoxy-silica nano/micro-composites. Indeed, average value 148.86 kJ/mol was recorded unfilled resin. maximum range instead loaded microsilica. EMC-5p50 sample showed mean 217.6 kJ/mol. remarkable enhancement ascribed polymer invading pores forging formidable interfacial bonds.
Язык: Английский
Процитировано
59
Journal of Applied Polymer Science, Год журнала: 2023, Номер 140(17)
Опубликована: Фев. 24, 2023
Abstract Polymeric dielectrics with high dielectric permittivity ( ɛ ′) and low loss have momentous applications in energy storage devices. In this study, to concurrently improve the ′ restrain of original Zn (Zinc)/poly(vinylidene fluoride, PVDF), core@double‐shell structured Zn@ZnO(zinc oxide)@PS(polystyrene) particles were prepared composited PVDF. The impacts dual shells on properties polarization mechanism composites explored by fitting experimental data a Havriliak–Negami (H–N) equation. Zn@ZnO@PS/PVDF exhibit remarkably higher comparison raw Zn@ZnO fillers owing induced multiple polarizations originating from combined contributions α relaxation PVDF, slow interparticle fast intraparticle polarization. More importantly, increases PS shell’ thickness, while is still kept at rather levels barrier effect long‐range charges migration. So, introduction shell synchronously promotes both toward enhanced properties. developed strategy opens novel path design fabrication polymer desirable performances for electronics electrical industry.
Язык: Английский
Процитировано
55
Polymer Degradation and Stability, Год журнала: 2024, Номер 228, С. 110902 - 110902
Опубликована: Июнь 25, 2024
Fused Deposition Modelling (FDM), a prevalent additive manufacturing technique utilising polymeric materials, facilitates intricate geometric customisation and rapid prototyping. The ongoing development of FDM technology emphasises the importance thermal characteristics FDM-printed which are essential for various applications, including aerospace biomedical engineering. properties covering wide range thermoplastic polymers composites, were examined in this review. Despite versatility technology, challenges persist 3D printed parts, manifesting as anisotropy, voids, sub-optimal conductivity, thereby impeding performance. Achieving precise control over printing parameters such nozzle temperature, layer height, speed is pivotal optimising properties. Additionally, controlled treatments, like annealing, offer avenues manipulating crystalline structure components to enhance conductivity. By elucidating effects reinforcements, article aims provide insights into potential enhancements adjustments developing thermally resistant FDM-based materials.
Язык: Английский
Процитировано
30
Journal of Alloys and Compounds, Год журнала: 2024, Номер 979, С. 173454 - 173454
Опубликована: Янв. 9, 2024
Язык: Английский
Процитировано
19
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 23, 2025
Abstract Film capacitors are widely used in advanced electrical and electronic systems. The temperature stability of polymer dielectrics plays a critical role supporting their performance operation at elevated temperatures. For the last decade, investigations for new with high energy storage higher temperatures (>200 °C) have attracted much attention numerous strategies been employed. However, there is currently still large gap between lab research large‐scale production. In this review, main effects on dielectric properties analyzed core modification summarized. scientific technological reasons difference practical application also discussed. Further, several processes film preparation typical device structure design reviewed. current product launches pertaining high‐temperature Conclusive insights future perspectives delineated to offer strategic direction ongoing prospective innovation materials.
Язык: Английский
Процитировано
3
Materials Today Chemistry, Год журнала: 2025, Номер 45, С. 102644 - 102644
Опубликована: Март 17, 2025
Язык: Английский
Процитировано
3
High Voltage, Год журнала: 2024, Номер 9(5), С. 1021 - 1032
Опубликована: Апрель 17, 2024
Abstract Internal insulation of high‐voltage power modules is facing interesting failure risks, including high temperature overheating, breakdown fault, material cracking etc., so it imperative to urgently develop new dielectric materials with thermal conductivity ( λ ), outstanding electrical insulation, and stability properties. A method construct controllable liquid crystalline cross‐linking networks based on the synthesis biphenyl epoxy monomer change curing agent structures proposed. The uniform nematic rod‐like domains were obtained by using 4,4‐diaminodiphenylmethane as a under pre‐curing 105°C. resulting film (abbreviated TD‐105) exhibited up 0.53 W m −1 K strength 57.69 kV mm , which showed simultaneous enhancement 178% 16%, respectively, compared traditional bisphenol resin. Moreover, also lower loss magnitude partial discharge while having higher glass‐transition (190°C). novel idea for development high‐performance insulating application large‐power equipment provided.
Язык: Английский
Процитировано
18
Chemical Engineering Journal, Год журнала: 2024, Номер 501, С. 157623 - 157623
Опубликована: Ноя. 16, 2024
Язык: Английский
Процитировано
15