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Thermal and mechanical properties of poly(urethane‐imide)/epoxy/silica hybrids
Author(s) -
Liu Pinggui,
Zhang Qingfang,
He Lihua,
Xie Qingji,
Ding Heyan
Publication year - 2010
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.32322
Subject(s) - epoxy , diglycidyl ether , materials science , thermal stability , prepolymer , polyurethane , imide , polymer chemistry , silane , ether , composite material , bisphenol a , chemistry , organic chemistry
Improving properties of polyurethane (PU) elastomers have drawn much attention. To extend the properties of the modified PU composite, here a new method via the reaction of poly(urethane‐imide) diacid (PUI) and silane‐modified epoxy resin (diglycidyl ether of bisphenol A) was developed to prepare crosslinked poly (urethane‐ imide)/epoxy/silica (PUI/epoxy/SiO 2 ) hybrids with enhanced thermal stability. PUI was synthesized from the reaction of trimellitic anhydride with isocyanate‐terminated PU prepolymer, which was prepared from reaction of polytetramethylene ether glycol and 4,4′‐diphenylmethane diisocyanate. Thermal and mechanical properties of the PUI/epoxy/SiO 2 hybrids were investigated to study the effect of incorporating in situ SiO 2 from silane‐modified epoxy resin. All experimental data indicated that the properties of PUI/epoxy/SiO 2 hybrids, such as thermal stability, mechanical properties, were improved due to the existence of epoxy resin and SiO 2 . © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010