Abstract
In order to develop high-performance dielectric materials, poly(arylene ether nitrile)-based composites were fabricated by employing surface-hydroxylated calcium copper titanate (CCTO) particles. The results indicated that the surface hydroxylation of CCTO effectively improved the interfacial compatibility between inorganic fillers and the polymer matrix. The composites exhibit not only high glass transition temperatures and an excellent thermal stability, but also excellent flexibility and good mechanical properties, with a tensile strength over 60 MPa. Furthermore, the composites possess enhanced permittivity, relatively low loss tangent, good permittivity-frequency stability and dielectric-temperature stability under 160 °C. Therefore, it furnishes an effective path to acquire high-temperature-resistant dielectric materials for various engineering applications.
Highlights
In recent decades, polymer-based composites with high dielectric permittivity and low loss tangents have received extensive attention in aerospace, microelectronic devices and electronic components such as film capacitors, embedded capacitors [1,2,3,4,5]
A broad and strong band at 3430 cm−1 was observed in the Fourier transform infrared (FTIR) spectrum of hydroxylated CCTO (h-CCTO) particles, which was assigned to the stretching mode of O–H
These results indicate that the CCTO particles after surface hydroxylation contain a large number of hydroxyl groups on the particles’ surface
Summary
Polymer-based composites with high dielectric permittivity and low loss tangents have received extensive attention in aerospace, microelectronic devices and electronic components such as film capacitors, embedded capacitors [1,2,3,4,5]. As far as we know, most ceramic fillers have good dielectric properties, such as high dielectric permittivity and low loss tangent [6,7]. Polymer-based composites have been developed to combine the advantages of polymers and ceramic fillers, which possess high dielectric permittivity and low loss tangent as well as good processability. Polymer-based composites with conductive fillers have a large increase in dielectric permittivity, their loss tangents are greatly increased. When the content of the conductive fillers increases to a certain value (i.e., the percolation threshold), the loss tangent will increase exponentially, which is a fatal disadvantage for their practical applications
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
