Journal
SURFACES AND INTERFACES
Volume 22, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.surfin.2020.100807
Keywords
Interfacial; Low dielectric constant; Ultra-low dielectric
Categories
Funding
- National Natural Science Foundation of China [51973140]
- Fundamental Research Funds for the Central University [2019SCU12011]
- State Key Laboratory of Polymer Materials Engineering [sklpme-2020-3-13]
- (Ministry of Human Resources and Social Affairs) Post-doctoral Funds of Personnel Department-Interdisciplinary Innovation and Cultivation Project [0030914153004]
Ask authors/readers for more resources
This study constructed novel silicon dioxide/polybutadiene (SiO2/PB) composites with different SiO2 morphologies and surface function groups, showing extremely low dielectric constant and dielectric loss. The crosslinking reaction between surface surficial vinyl groups of the SiO2 and PB macromolecules tremendously suppressed the interfacial polarization of the composites, leading to improved material performance.
The resistance-capacitance time delay, crosstalk interference and poor dimensional stability would damage the signal intact transmission. However, it was still a tough challenge to fabricate an interlayer dielectric material with low dielectric constant and low dielectric loss as well as excellent dimensional stability at the same time. In this work, for the first time, we constructed novel silicon dioxide/polybutadiene (SiO2/PB) composites with different SiO2 morphologies and surface function groups, which showed extremely low dielectric constant and dielectric loss in both low and high frequency bands. The crosslinking reaction between surface surficial vinyl groups of the SiO2 and PB macromolecules tremendously suppressed the interfacial polarization of the SiO2/PB composites. Therefore, the SiO2/PB composites exhibited low dielectric constant of 2.66 and ultralow dielectric loss of 0.0022 at high frequency band (10 GHz), and the coefficient of thermal expansion decreased to 154 x 10(-6)/degrees C, which was three orders of magnitude less than that of the pure PB. The interface polarization response behavior of SiO2/PB composites was also elucidated by double layer theory, and the resonance phenomenon was firstly proposed to enhance the interface polarization. This work could provide a robust and simple strategy for the design of composites with ultralow dielectric loss and excellent dimensional stability for high-speed communication in different frequency bands.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available