2016 Volume 37 Issue 6 Pages 242-252
In the thin film system of 1,1-bis(4-cyanatophenyl)ethane including silica filler, it could be cured fast with aromatic diamines such as bis(3-aminophenyl)sulfone, 1,3-bis(3-aminophenoxy)benzene (APBN) and 1,3-bis[2-(4-aminophenyl)-2- propyl] benzene, and the cured products had glass transition temperature above 220℃ and tensile shear adhesion strength about 10MPa. In our experiment, the aromatic diamines of the lower pKb showed the stronger cure catalysis. In comparison with novolak type cyanate ester resin derived from fomaldehyde and phenol (NVCN), that derived from acetaldehyde and phenol (E-CN-M)showed lower viscosity that leads to better handling in the lower molecular weight region (Mw<1000). Synopsis In the thin film system of 1,1-bis(4-cyanatophenyl)ethane including silica filler, it could be cured fast with aromatic diamines such as bis(3-aminophenyl)sulfone, 1,3-bis(3-aminophenoxy)benzene (APBN) and 1,3-bis[2-(4-aminophenyl)-2- Furthermore, the cured product of E-CN-M in this region (Mw<1000) showed higher initial and long term heat resistance than NVCN. It was also shown that introduction of furan moiety to the bridging methylene in the novolak type cyanate ester resin enhanced long-term heat resistance.
