Issue 17, 2022

Cyanate ester resins with superior dielectric, mechanical, and flame retardance properties obtained by introducing a fluorinated hyperbranched polyaryletherketone

Abstract

Cyanate ester resins are broadly applied in electronic packaging, printed circuit boards, radomes, and communication satellites. Herein, a novel fluorinated hyperbranched polyaryletherketone (HBPAEK) with an epoxy terminal group was synthesized by one-pot polycondensation followed by terminal functionalization. Bisphenol A dicyanate ester resin modified with HBPAEK (m-BADCy resin) through a co-curing process demonstrated significantly improved wave-transparent performance, mechanical properties, thermal stability, and flame retardancy. The dielectric constant (ε) and dielectric loss tangent (tan δ) of m-BADCy resin modified with 20 wt% HBPAEK were reduced to 2.56 and 0.0084 from 3.02 and 0.0106 of the unmodified BADCy resin, respectively. The corresponding theoretical wave transmittance increased to 94.6% from 92.7%. In addition, the respective flexural and impact strength were improved dramatically to 140.3 MPa and 35.1 kJ m−2 from 99.5 MPa and 11.8 kJ m−2, respectively, increased by 41.0% and 197.5%. Besides, the m-BADCy resin exhibited remarkably improved flame retardancy with the UL-94 rate of V-0 and the LOI value of 37%, whereas the unmodified BADCy resin failed to pass the UL-94 test and showed the LOI value of 26%.

Graphical abstract: Cyanate ester resins with superior dielectric, mechanical, and flame retardance properties obtained by introducing a fluorinated hyperbranched polyaryletherketone

Supplementary files

Article information

Article type
Paper
Submitted
16 Feb 2022
Accepted
30 Mar 2022
First published
31 Mar 2022

Polym. Chem., 2022,13, 2484-2494

Cyanate ester resins with superior dielectric, mechanical, and flame retardance properties obtained by introducing a fluorinated hyperbranched polyaryletherketone

J. Zhang, C. Wang, W. Feng and Y. Tang, Polym. Chem., 2022, 13, 2484 DOI: 10.1039/D2PY00211F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements