Premium
Synthesis and characterization of epoxy resin modified with γ‐thiopropyl triethoxy silane
Author(s) -
Wang Zhenchang,
Suo Jinping,
Li Juan
Publication year - 2009
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.30559
Subject(s) - epoxy , silane , materials science , silanol , composite material , bisphenol a , epichlorohydrin , silanes , composite number , adhesive , toughness , gelcoat , fourier transform infrared spectroscopy , chemical engineering , chemistry , catalysis , organic chemistry , layer (electronics) , engineering
Organic/inorganic hybrids with 1 to 7% silica contents were synthesized from bisphenol‐A and epichlorohydrin by utilizing γ‐thiopropyl triethoxy silane (KH580). The reactive coupling agent KH580 was introduced to epoxy resin to obtain high adhesive strength material for engineering industry. It was hypothesized that the multiple reactive functional silanol group SiOH of KH580 after hydrolyzing reacted with epoxy resin to increase the shear strength and toughness of epoxy resin. IR spectra indicated that bonded stationary phase was formed. Shear strength of epoxy resin–based composite increased and then decreased after SiO 2 content reached 5 wt %; the optimal value was 24.78 MPa. SEM analysis showed that toughness of SiO 2 /epoxy resin–based composite also increased and then decreased when the content of SiO 2 is more than 5 wt %. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009