Low‐frequency dielectric performance of polyimide composites containing amorphous polymer‐derived SiCN ceramics

Sun, Dandan; Gao, Yan; Liu, Jinling; Ma, Baisheng; Wang, Yiguang

doi:10.1002/pc.25299

Cited by 3 publications

(1 citation statement)

References 28 publications

(28 reference statements)

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“…[29][30][31] Among the key factors that determine the dielectric constant of a polymer/ceramic composite, the bulk polarization and the interfacial polarization between filler and polymer are the most important ones. [25,[32][33][34] Figure 6A displays the variation of ε' in 10 $ 10 6 Hz with filler loading and frequency for the PPO composites with ZWP and silica. The ε' of the two composites exhibits a slight dependency of frequency, implying that the dipoles have sufficient time to orient as the frequency changes.…”

Section: Characterization and Analysis Of Properties Of Ppo/zwp Compo...mentioning

confidence: 99%

Ultra‐low loss polyphenylene oxide‐based composites with negative thermal expansion fillers

et al. 2022

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The mismatch of coefficient of thermal expansion (CTE) of components has created numerous reliability issues in electronic packages. Incorporating inorganic fillers into polymer matrices has been proven to be an effective way to reduce the CTE, but properly balancing CTE with other key properties of the composites is still a challenge. In the current work, negative thermal expansion Zr 2 WP 2 O 12 (ZWP) particles were prepared by a high-temperature solidphase synthesis method. Polyphenylene oxide (PPO)-based composites with different volume fractions (0, 10, 20, 30 vol%) of ZWP particles were prepared and their thermal expansion and dielectric properties were characterized. PPO/silica composites with the same volume fractions of silica were also prepared and characterized for comparison. With the content of filler increased from 0 to 30 vol%, the CTE of the PPO/ZWP composites reduced from 74.2 to 45.4 ppm/ C, which is more significant than that of the PPO/silica composites (48.0 ppm/ C with 30 vol% silica). Meanwhile, the dielectric loss of PPO/ZWP composites decreased significantly from 0.0024 (0 vol% ZWP) to 0.0018 (30 vol % ZWP) at 10 GHz, which is better than PPO/silica composites (0.0019 with 30 vol% Silica). The PPO/ZWP composites exhibit excellent comprehensive properties, which may be promising materials for high-frequency applications in electronic packaging fields.

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Section: Characterization and Analysis Of Properties Of Ppo/zwp Compo...mentioning

confidence: 99%

Ultra‐low loss polyphenylene oxide‐based composites with negative thermal expansion fillers

et al. 2022

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Study on a novel flexible high dielectric poly (isoprene‐co‐acrylonitrile)/barium titanate composite with a reversible cross‐linked structure

Dai,

Liu,

Lin

et al. 2024

Polymer Composites

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Reversible cross‐linked structures are widely used to turn thermoset plastics into recyclable and self‐healing vitrimer materials, but seldom applied in traditional flexible rubber/ceramic composites. In this paper, dioxaborolanes based flexible poly (isoprene (IP)‐co‐acrylonitrile (AN)) vitrimer is synthesized as the rubber matrix by copolymerizing with functional monomers at 5°C for 7 h, and mixed with 5 wt% modified barium titanates (BT) to prepare flexible high dielectric vitrimer composite. The materials are characterized by FTIR, TGA, SEM, DMA, etc. The results indicate that reversible crosslinking can occur above 76.4°C, and copolymerizing with the dioxaborolanes based monomers can turn poly (IP‐co‐AN) into the flexible vitrimer. The poly (IP‐co‐AN)/BT vitrimer composite not only shows a good thermal stability below 145.6°C, but also exhibits an excellent particle dispersivity and a certain self‐healing function at 80°C. The poly (IP‐co‐AN)/BT vitrimer composite has a storage modulus E' about 3.18 MPa at 25°C and Tg about −5.4°C, and shows a higher relative permittivity about 7.5 and lower dielectric loss about 0.156 at 1 k Hz. The results indicate that this paper provides a new method to achieve multifunction and high dielectricity for composites.Highlight Reversible cross‐linked structures are applied in rubber / ceramic composites Cross‐linked flexible composites are reprocessable and self‐healing Reversible bonds between particles and matrix improve compatibility Synergism of BaTiO3 and cross‐linked structure enhances dielectric properties

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Characterization of polymer-derived ceramers subjected to wet-etching and the evolution of the carbon phase during thermal conversion

Tamayo

Rubio

Colomer

et al. 2020

Journal of Non-Crystalline Solids

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Low‐frequency dielectric performance of polyimide composites containing amorphous polymer‐derived SiCN ceramics

Cited by 3 publications

References 28 publications

Ultra‐low loss polyphenylene oxide‐based composites with negative thermal expansion fillers

Ultra‐low loss polyphenylene oxide‐based composites with negative thermal expansion fillers

Study on a novel flexible high dielectric poly (isoprene‐co‐acrylonitrile)/barium titanate composite with a reversible cross‐linked structure

Characterization of polymer-derived ceramers subjected to wet-etching and the evolution of the carbon phase during thermal conversion

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