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Synthesis and properties of novel dicyanate with low dielectric and water absorption performance
Author(s) -
Zhang Zhongyun,
Yu Ruobing,
Wang Fan,
Wang Jialiang,
Jiao Yangsheng
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33582
Subject(s) - triethylamine , thermal stability , glass transition , materials science , monomer , benzene , dielectric , polymer chemistry , absorption of water , bisphenol a , fourier transform infrared spectroscopy , absorption (acoustics) , triazine , composite material , chemistry , chemical engineering , organic chemistry , polymer , optoelectronics , epoxy , engineering
The 1,4‐bis (3,5‐dimethyl‐4‐cyanatobenzyl) benzene (BBZCy) was synthesized successfully by the reaction of 1,4‐bis (3,5‐dimethyl‐4‐hydroxybenzyl)benzene(BBZ) with cyanogen chloride in the presence of triethylamine at −5–0°C. Its structure was confirmed by means of FTIR, elemental analysis, MS, and 1 H NMR spectra. The monomer of BBZCy was cured by itself or cured with catalysts to form sym‐triazine structure. Thermal properties of cured BBZCy were studied using DSC, DMA, TMA, and TGA. Compared with the commercial bisphenol A dicyanate resin (BADCy), the cured BBZCy resin exhibited a lower dielectric constant (2.66 at 1 GHz), a lower dissipation factor (0.0054 at 1 GHz), lower water absorption (0.8% at 100 h), less thermal stability, and lower glass transition temperature. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011