Particle-matrix interfacial bonding: Effect on the fracture properties of rubber-modified epoxy polymers
- Imperial College of Science, London (United Kingdom)
- BFGoodrich Co., Brecksville, OH (United States)
This study employed various butadiene-acrylonitrile rubbers and showed that both the functionality of the end groups and the acrylonitrile content have a strong influence on the microstructure and the interfacial bonding that are observed in the resulting rubber-toughened epoxy. For the rubbers examined, significant toughening is recorded only when the rubber forms a separate phase in the epoxy matrix with a particle size on the order of micrometers. These microstructural features are affected by both the functionality of the end groups and the acrylonitrile content of the rubber employed. However, once phase separation of the rubber has been achieved to give particles on the order of micrometers in size, then the interfacial bonding between the rubber particles and the epoxy matrix has only a small effect on the fracture properties of the rubber-toughened epoxy polymers. 28 refs., 6 figs., 3 tabs.
- OSTI ID:
- 76235
- Report Number(s):
- CONF-900802--
- Country of Publication:
- United States
- Language:
- English
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