Progress of heat resistant dielectric polymer nanocomposites with high dielectric constant

Zhu, Ningning; Liang, Guozheng; Yuan, Li; Guan, Qingbao; Gu, Aijuan

doi:10.1049/iet-nde.2017.0006

Cited by 13 publications

(9 citation statements)

References 168 publications

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“…The future works involving tunable nanofillers, linkers of different types, and molecular weights for efficient thermal management and cycling performance will provide a platform to develop low-cost and flexible dielectric capacitors. ,− …”

Section: Resultsmentioning

confidence: 99%

Probing the Interface Activation in Designing Defect-Free Multilayered Polymer Nanocomposites for Dielectric Capacitor Applications

et al. 2020

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Herein, we have successfully demonstrated the microstructural evidence of the inhomogeneous interfaces in multilayered capacitors and explained the role of interface activation in the dielectric performance. Robust and homogeneous interfaces in the barium titanate nanoparticles (BT NPs)/polyvinylidene fluoride (PVDF) polymer nanocomposites were developed using a polyvinylpyrrolidone (PVP) linker to link the top and bottom layers and a spin-coating approach. The cross-sectional field emission scanning electron microscopy depicted a clear picture of loosely bonded interfaces without PVP in a multilayered capacitor. The optimized PVP concentration (PVP2 = 30 mg mL −1 ) provided homogeneous interfaces. The energy density of PVDF-PVDF was the lowest among different devices, with a value of 1.6 J cm −3 at 1872 kV cm −1 , and it was increased to 3.8 J cm −3 at 3400 kV cm −1 with PVP2 addition in PVDF-PVP2-PVDF. The 5 vol % BT NPs in BT/PVDF-PVP2-BT/PVDF (5 vol % BP2B) exhibited a maximum energy density of 6.2 J cm −3 at a much higher breakdown field of 4474 kV cm −1 , which was ∼100, ∼300, and ∼400% higher than those of PVDF, PVDF-PVDF, and state-of-the-art biaxially oriented polypropylene capacitors, respectively. Also, the trilayered device demonstrated a better dielectric performance than fivelayered devices. Thus, the middle layer accompanies the interface homogeneity and eliminates the use of surface-functionalized nanofillers in a multilayered capacitor. This work will provide a mechanistic approach to develop low-cost, defect-free, and high energy density capacitors using a simple solution process route.

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Section: Resultsmentioning

confidence: 99%

Probing the Interface Activation in Designing Defect-Free Multilayered Polymer Nanocomposites for Dielectric Capacitor Applications

et al. 2020

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“…However, pure polymer film always shows low‐material intrinsic permittivity, low‐energy storage density 4 and heat resistance. Therefore, polymer dielectric films with high‐dielectric constant, low‐dielectric loss, and high‐temperature resistance are urgently needed 5–8 …”

Section: Introductionmentioning

confidence: 99%

“…By filling dielectric nanoparticles into the PI matrix, the dielectric properties of PI nanocomposite films can be substantially improved. Due to the high‐dielectric constant, barium titanate (BT) has been widely used in the fabrication of PI dielectric nanocomposite films 5,20–24 . Yue et al 25 first reduced BT by solid‐state reaction and then prepared PI/BT composites by in situ polymerization.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of polyimide dielectric nanocomposites containing polyvinylpyrrolidone chemically functionalized barium titanate by in‐situ synthesis compounding

Yang

Zhang

et al. 2022

J of Applied Polymer Sci

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This work employed polymer active agent polyvinylpyrrolidone (PVP) treated barium titanate (BT) nanoparticles (PVP@BT) as functional nanofillers to fill polyimide (PI) matrix to fabricate PI nanocomposite films. The microstructure, dielectric properties, and heat resistance of PI, PI/BT, and PI/PVP@BT dielectric nanocomposite films were investigated. Fourier transform infrared spectrometer (FTIR) indicated that PVP has been successfully coated on the surface of BT nanoparticles. Due to the enhanced aggregation of monomers on the PVP@BT nanoparticles, higher molecular weight and viscosity of PI/PVP@BT nanocomposite films were achieved. Compared with PI/BT nanocomposite films, the dispersion of PVP@BT nanoparticles in PI/PVP@BT nanocomposite films was better, as verified by field emission scanning electron microscope and high‐resolution transmission electron microscopy. Filling a small amount of PVP@BT nanoparticles into the PI matrix improved the dielectric properties of the resultant nanocomposite films. The dielectric constant of the nanocomposite films with 10 wt% filler loading was up to 7.1 at 1000 Hz, which was 2.5 times higher than that of pure PI (2.9). PI nanocomposite film dielectric loss was generally lower than 0.015. Thermogravimetric analysis (TGA) tests verified that both pure PI and PI nanocomposite films showed excellent thermal stability. This work can be expected to provide a new strategy for designing and manufacturing PI dielectric nanocomposite films for energy storage applications.

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“…According to the material type, high- k materials can be divided into high- k ceramic materials, high- k polymer materials, and high- k polymer composite materials. Recently, a lot of efforts have been devoted to developing the high- k flexible polymer composites owing to their potential applications in high charge storage capacitors, artificial muscles, smart skins, and apparatus for high-speed integrated circuits. − …”

Section: Introductionmentioning

confidence: 99%

Improving Dielectric Properties and Thermostability of CaCu₃Ti₄O₁₂/Polyimide Composites by Employing Surface Hydroxylated CaCu₃Ti₄O₁₂ Particles

Qian

Zhu

Zheng

et al. 2019

ACS Appl. Polym. Mater.

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Surface hydroxylation was implemented on CaCu3Ti4O12 (CCTO) particles to improve their interface compatibility and dispersibility in polyimide matrix. The surface hydroxylated CCTO fillers (CCTO–OH) were obtained by treating the CCTO particles in the mixed solution of H2SO4 and H2O2. The experimental results showed that the CCTO–OH/polyimide (PI) composite films had higher dielectric permittivity and lower coefficient of thermal expansion (CTE) compared to those of the CCTO/PI composite films, which were mainly attributed to the good dispersion of CCTO–OH particles and the enhanced interfacial polarization between CCTO–OH particles and PI chains. Among these CCTO–OH/PI composite films, the composite film with 40 vol % CCTO–OH particle loading exhibited the highest dielectric permittivity (76.9, 102 Hz), and a low dielectric loss (0.2, 102 Hz) was maintained. The maximum discharge energy density of the CCTO–OH/PI composite film with 25 vol % CCTO–OH reached 1.31 J/cm3, which was almost twice that of pure PI (0.63 J/cm3). Further, the prepared CCTO–OH/PI composite films had excellent heat resistance and low CTE. The high-k property of the CCTO–OH/PI composites remained stable up to 300 °C, which is probably the most heat-resistant dielectric material reported in the literature and is absolutely critical for the manufacture of electronic devices facing extreme conditions.

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Progress of heat resistant dielectric polymer nanocomposites with high dielectric constant

Cited by 13 publications

References 168 publications

Probing the Interface Activation in Designing Defect-Free Multilayered Polymer Nanocomposites for Dielectric Capacitor Applications

Probing the Interface Activation in Designing Defect-Free Multilayered Polymer Nanocomposites for Dielectric Capacitor Applications

Preparation and properties of polyimide dielectric nanocomposites containing polyvinylpyrrolidone chemically functionalized barium titanate by in‐situ synthesis compounding

Improving Dielectric Properties and Thermostability of CaCu₃Ti₄O₁₂/Polyimide Composites by Employing Surface Hydroxylated CaCu₃Ti₄O₁₂ Particles

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Progress of heat resistant dielectric polymer nanocomposites with high dielectric constant

Cited by 13 publications

References 168 publications

Probing the Interface Activation in Designing Defect-Free Multilayered Polymer Nanocomposites for Dielectric Capacitor Applications

Probing the Interface Activation in Designing Defect-Free Multilayered Polymer Nanocomposites for Dielectric Capacitor Applications

Preparation and properties of polyimide dielectric nanocomposites containing polyvinylpyrrolidone chemically functionalized barium titanate by in‐situ synthesis compounding

Improving Dielectric Properties and Thermostability of CaCu3Ti4O12/Polyimide Composites by Employing Surface Hydroxylated CaCu3Ti4O12 Particles

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Improving Dielectric Properties and Thermostability of CaCu₃Ti₄O₁₂/Polyimide Composites by Employing Surface Hydroxylated CaCu₃Ti₄O₁₂ Particles