Thermosetting Polymer-Matrix Composites for Strucutral Repair Applications
- Iowa State Univ., Ames, IA (United States)
Several classes of thermosetting polymer matrix composites were evaluated for use in structural repair applications. Initial work involved the characterization and evaluation of woven carbon fiber/epoxy matrix composites for structural pipeline repair. Cyanate ester resins were evaluated as a replacement for epoxy in composites for high-temperature pipe repair applications, and as the basis for adhesives for resin infusion repair of high-temperature composite materials. Carbon fiber/cyanate ester matrix composites and fumed silica/cyanate ester nanocomposites were evaluated for their thermal, mechanical, viscoelastic, and rheological properties as they relate to their structure, chemistry, and processing characteristics. The bisphenol E cyanate ester under investigation possesses a high glass transition temperature, excellent mechanical properties, and unique ambient temperature processability. The incorporate of fumed silica served to enhance the mechanical and rheological properties of the polymer and reduce thermal expansion without sacrificing glass transition or drastically altering curing kinetics. Characterization of the composites included dynamic mechanical analysis, thermomechanical analysis, differential scanning calorimetry, thermogravimetric analysis, rheological and rheokinetic evaluation, and transmission electron microscopy.
- Research Organization:
- Ames Lab., Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11358
- OSTI ID:
- 933085
- Report Number(s):
- IS--T 2861
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ADHESIVES
AMBIENT TEMPERATURE
CALORIMETRY
CARBON
CHEMISTRY
COMPOSITE MATERIALS
CURING
CYANATES
ESTERS
GLASS
INFUSION
KINETICS
MECHANICAL PROPERTIES
PIPELINES
POLYMERS
REPAIR
RESINS
SILICA
THERMAL EXPANSION
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION TEMPERATURE
TRANSMISSION ELECTRON MICROSCOPY