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Curing of silylated polyurethane with BF 3 ‐monoethylamine complex as moisture‐curable adhesives and their properties
Author(s) -
Nomura Yukihiro,
Sato Shinichi,
Mori Hideharu,
Endo Takeshi
Publication year - 2007
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.26809
Subject(s) - curing (chemistry) , polyurethane , adhesive , materials science , boron trifluoride , bond strength , catalysis , polymer chemistry , composite material , moisture , polymer , isocyanate , chemistry , organic chemistry , layer (electronics)
Boron trifluoride monoethylamine complex (BF 3 ‐MEA) was evaluated as one of the curing catalyst, for the moisture‐curable adhesive based on the polyurethane end‐capped with trimethoxysilane (silylated polyurethane). BF 3 ‐MEA worked as the catalyst of condensation reaction of trimethoxysilyl groups in silylated polyurethane to give the corresponding networked polymer. The curing speed, the bond strength, and the heat resistance of the crosslinked adhesives with BF 3 ‐MEA were compared with dibutyltin dimethoxide. It was found that BF 3 ‐MEA was a good curing catalyst, which showed the same performance in the bond strength and remarkable advantages in the curing speed and the heat resistance, compared with organotin compound. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007