Synthesis, characterization, and properties of multifunctional naphthalene-containing epoxy resins cured with cyanate ester

✍ Scribed by Chun-Shan Wang; Ming-Chun Lee

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 304 KB
• Volume: 73
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990829)73:9<1611::aid-app2>3.0.co;2-8

✦ Synopsis

Multifunctional naphthalene-containing epoxy resins derived from 2,7dihydroxylnaphthalene were synthesized and the intermediates were characterized by Fourier transform infrared spectroscopy, elemental analysis, and mass spectrometry. The cured products from naphthalene-containing epoxy resin and the dicyanate ester of bisphenol A (DCBA) exhibited a better T g and a lower coefficient of thermal expansion than those of the commercial epoxy system. The glass transition temperature, thermal stability, and moisture absorption were found to increase with the epoxy functionality when naphthalene-containing epoxy resins were cured with DCBA. Thermogravimetric analyses revealed that the DCBA-cured system had a better thermal stability than that of the 4,4Ј-diaminodiphenylsulfone (DDS)-cured system. The addition of a metallic catalyst into the epoxy resin/cyanate ester system not only facilitated the cyclotrimerization of the cyanate ester but also the polyetherification of the epoxy resin.