Polycyanurate Thermoset Networks with High Thermal, Mechanical, and Hydrolytic Stability Based on Liquid Multifunctional Cyanate Ester Monomers with Bisphenol A and AF Units
✍ Scribed by Basit Yameen; Hatice Duran; Andreas Best; Ulrich Jonas; Martin Steinhart; Wolfgang Knoll
- Book ID
- 102939301
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 810 KB
- Volume
- 209
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
Two cyanate ester monomers (CEMs) based on oligomeric aryl ether (OAE) derivatives of bisphenol AF and bisphenol A, with multiple reactive cyanate groups, were developed as technologically highly relevant thermosets. These CEMs are liquids processable at room temperature and can be crosslinked by cyclotrimerization of the cyanate groups to form extended polycyanurate (PC) networks at lower temperatures (<265 °C) than many existing CEMs. The cured PCs have high T~g~s (>280 °C), with excellent thermal, mechanical, and dielectric properties. PC nanorods with diameters of 65 or 380 nm could be moulded in porous alumina templates from the OAE‐CEMs. The high aspect ratio nanorods with a length in the order of 100 µm were hydrolytically stable upon extended exposure to boiling water.
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