Journal
ACS MACRO LETTERS
Volume 3, Issue 1, Pages 105-109Publisher
AMER CHEMICAL SOC
DOI: 10.1021/mz400520s
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Funding
- Air Force Office of Scientific Research (AFOSR)
- National Research Council Research Associateship Program
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A new polycyanurate network exhibiting extremely low moisture uptake has been produced via the treatment of perfluorocyclobutane-containing Bisphenol T with cyanogen bromide and subsequent thermal cyclotrimerization. The water uptake, at 0.56 +/- 0.10% after immersion in water at 85 degrees C for 96 h, represents some of the most promising moisture resistance observed to date in polycyanurate networks. This excellent performance derives from a near optimal value of the glass transition at 190 degrees C at full cure. Superior dielectric loss characteristics compared to commercial polycyanurate networks based on Bisphenol E were also observed. Polycyanurate networks derived from this new monomer appear particularly well. suited. for applications such. as radomes and spacecrafts where polycyanurates are already widely recognized as providing outstanding properties.
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