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Synthesis and modification of a naphthalene‐containing trifunctional epoxy resin for electronic applications
Author(s) -
Wang ChunShan,
Lee MingChun
Publication year - 1998
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/(sici)1097-4628(19981205)70:10<1907::aid-app5>3.0.co;2-y
Subject(s) - epoxy , glass transition , materials science , thermal stability , polymer chemistry , condensation polymer , chemistry , polymer , composite material , organic chemistry
A series of trifunctional epoxy resins were successfully synthesized by the condensation of 2,6‐dimethylol‐4‐methylphenol with phenol , cresol, 2,6‐dimethylphenol or 2‐naphthol, respectively, followed by epoxidation with a halohydrin. The structures of the synthesized triphenols were characterized by elemental analysis (EA), mass spectrometry (MS), and nuclear magnetic resonance (NMR) spectrometry, including 1 H‐NMR and 13 C‐NMR. The resulted epoxy resins were cured with 4–4′‐diaminodiphenyl sulfone (DDS), and the cured products were investigated. The cured trifunctional 2,6‐bis‐(2‐glycidyloxy‐1‐naphthyl‐methyl)‐4‐methyl phenyl glycidyl ether had the highest glass transition temperature, highest thermal stability, the lowest coefficient of thermal expansion, and lowest moisture absorption of the epoxy resins studied. The internal stress of cured naphthalene‐containing epoxy resin was reduced by modification with 12 wt % amino‐terminated polydimethyl siloxane (ATPDMS), while the glass transition temperature was only slightly depressed. Phase separation of the silicone rubber‐modified epoxy matrix was characterized by SEM. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 1907–1921, 1998