Properties of anhydride-cured epoxy filled with silica treated with silane blends of amino and alkyl end groups. Technical report
Cylinders made of a benzyldimethylamine (BDMA)-catalyzed, nadic methyl anhydride (NMA)-cured diglycidyl ether of bishphenol-A (BDGE) were filled with 30 weight % of silica. The silica had previously been treated by silane blends of varying composition, of either gamma-aminopropyltriethoxysilane (APS) and butyltriethoxysilane (BTS) or APS and ethyltriethoxysilane (ETS). A variety of techniques were utilized in order to compare the effects of BTS versus ETS and the concentration of amine in the silane blend. These techniques include cross polarization magic angle spinning (CP-MAS) Silicon 29 solid state nuclear magnetic resonance (NMR), photoacoustic (PAS)-Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), compression strength, scanning electron microscopy (SEM) of fracture surfaces, Hydrogen 1 NMR imaging, and gravimetric analysis of water sorption. The results indicate the importance of structure and composition of the silane interphase on the properties of composite materials.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Macromolecular Science
- OSTI ID:
- 5480146
- Report Number(s):
- AD-A-235981/8/XAB; CNN: N00014-88R-0330
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKYL RADICALS
AMINES
ANHYDRIDES
CALORIMETRY
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL PROPERTIES
COMPOSITE MATERIALS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
EPOXIDES
EVEN-ODD NUCLEI
FOURIER TRANSFORMATION
FRACTURE PROPERTIES
GRAVIMETRIC ANALYSIS
HYDRIDES
HYDROGEN 1
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
INFRARED RADIATION
INTEGRAL TRANSFORMATIONS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MECHANICAL PROPERTIES
METHYL RADICALS
MICROSCOPY
MINERALS
MIXTURES
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
RADIATIONS
RADICALS
RESONANCE
SCANNING ELECTRON MICROSCOPY
SILANES
SILICA
SILICON 29
SILICON COMPOUNDS
SILICON ISOTOPES
SILICON OXIDES
SORPTION
SORPTIVE PROPERTIES
STABLE ISOTOPES
SURFACE PROPERTIES
SURFACES
THERMAL ANALYSIS
TRANSFORMATIONS
WATER