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Issue 28, 2017
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Ultralow dielectric, fluoride-containing cyanate ester resins with improved mechanical properties and high thermal and dimensional stabilities

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Abstract

In this contribution, we present a new strategy for the fabrication of modified cyanate ester resins combined with ultralow dielectric properties, improved mechanical properties and high thermal and dimensional stabilities. The fluoride-containing compound 2-((3-(trifluoromethyl)phenoxy)methyl)oxirane (TFMPMO), synthesized from m-(trifluoromethyl)phenol (TFMP) and epichlorohydrin (ECH), was used to modify bisphenol A dicyanate ester (BADCy) resins via copolymerization reaction. The BADCy resin modified with 15 wt% TFMPMO presented ultralow dielectric constant (ε, 2.75) and dielectric loss tangent values (tan δ, 6.7 × 10−3), high mechanical properties (impact strength of 15.4 kJ m−2 and flexural strength of 141.0 MPa), and superior thermal and dimensional stability (THeat-resistance index of 206 °C and coefficient of thermal expansion of 6.4 × 10−5), and it possesses great potential application in radomes and antenna systems of aircraft.

Graphical abstract: Ultralow dielectric, fluoride-containing cyanate ester resins with improved mechanical properties and high thermal and dimensional stabilities

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Publication details

The article was received on 14 Jan 2017, accepted on 10 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7TC00222J
Citation: J. Mater. Chem. C, 2017,5, 6929-6936
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    Ultralow dielectric, fluoride-containing cyanate ester resins with improved mechanical properties and high thermal and dimensional stabilities

    J. Gu, W. Dong, Y. Tang, Y. Guo, L. Tang, J. Kong, S. Tadakamalla, B. Wang and Z. Guo, J. Mater. Chem. C, 2017, 5, 6929
    DOI: 10.1039/C7TC00222J

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