Infrared analysis of the effect of composition of silane blends of amino and alkyl silane blends in tertiary amine-catalyzed anhydride-cured epoxy mixtures. Technical report
The property enhancement caused by silane coupling agents in glass-reinforced epoxy matrices is a function of the structure and composition of the silane. The effect of hydrolyzed and nonhydrolyzed of various compositions of silane coupling agent blends of gamma aminopropyltriethoxysilane (APS) and either butyltriethoxysilane (BTS) or ethyltriethoxysilane (ETS) on the cure of a benzyldimethylamine (BDMA)-catalyzed, nadic methyl anhydride (NMA) cured diglycidyl ether of bisphenol-A type epoxy were investigated by Fourier transform infrared spectroscopy (FTIR). The presence of the amine group perturbs the alternating copolymerization of the anhydride and epoxy groups by initiating and catalyzing the reaction. Hydrolysis also promoted the reaction rate. Samples containing ETS cured more rapidly than those containing BTS at the same composition. Imide formation was not significant in the presence of the alkyl-ended silanes. A very simple mathematical simulation was invoked to justify assumptions made during data analysis.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Macromolecular Science
- OSTI ID:
- 5470101
- Report Number(s):
- AD-A-235842/2/XAB; CNN: N00014-88-R-0330
- Country of Publication:
- United States
- Language:
- English
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360601* -- Other Materials-- Preparation & Manufacture
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ALKYL RADICALS
AMINES
ANHYDRIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COPOLYMERIZATION
CRYSTAL STRUCTURE
CURING
DATA PROCESSING
DECOMPOSITION
DISPERSIONS
ELECTROMAGNETIC RADIATION
EPOXIDES
FOURIER TRANSFORMATION
HYDRIDES
HYDROGEN COMPOUNDS
HYDROLYSIS
IMIDES
INFRARED RADIATION
INTEGRAL TRANSFORMATIONS
LYSIS
MATERIALS
MATHEMATICAL MODELS
MATHEMATICS
MATRIX MATERIALS
METHYL RADICALS
MICROSTRUCTURE
MIXTURES
OPTIMIZATION
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SILICON COMPOUNDS
POLYMERIZATION
PROCESSING
RADIATIONS
RADICALS
REINFORCED MATERIALS
SILANES
SILICON COMPOUNDS
SIMULATION
SOLVOLYSIS
TRANSFORMATIONS