Contact
    Start Publications Deterioration of microwave dielectric properties of low-loss ...
    ←  Publication Finder
    Attension

    Deterioration of microwave dielectric properties of low-loss thermosetting polyphenylene oxide/hydrocarbon resin induced by short-term thermo-oxidative aging

    Year: 2022

    Journal: Polym. Degrad. Stabil., Volume 206, DEC

    Authors: Fang, Zeming; Yu, Xueyi; Qin, Yijing; Li, Dan; Liu, Qianfa; Lu, Dong; Wang, Ke

    Organizations: Department of Science and Technology of Guangdong Province; Guangzhou Municipal Science and Tech-nology Bureau; [2020B010179002]; [2020B010175001]; [202201010869]

    Keywords: Dielectric loss; Dissipation factor; Polyphenylene oxide; 2-polybutadiene; High frequency circuit

    Deterioration of the low-loss property of substrate materials significantly affects the service life of high-frequency and high-speed circuits. In this work, the effect of short-term thermal aging on the microwave dielectric property of thermosetting polyphenylene oxide/hydrocarbon resin was investigated. Dielectric and dynamic thermo-mechanical spectra were used to evaluate changes in polar structure and crosslinking structure over the aging process. Infrared spectroscopy was applied to monitor the evolution of chemical structure, and the changes in microwave dielectric properties at 10GHz were recorded. An apparent linear relationship was discovered be-tween the polar group accumulation in the superficial layer and the change in microwave dielectric loss factor. Finally, the effect of aging on moisture absorption and the influence of thickness on the aging rate were pre-liminarily examined to investigate the impact of aging on practical applications.
    View publication