Morphology development of rubber-modified epoxy thermosets
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)
Epoxy thermosets have been widely used as high performance adhesives and matrix resins for composites due to their outstanding mechanical and thermal properties, such as high modulus and tensile strength, high glass transition temperature, high thermal stability, and moisture resistance. Incorporation of a secondary rubbery phase into the glassy epoxy matrix can improve impact and fracture toughness of epoxy thermosets without sacrificing the other desirable properties of the neat epoxy thermoset. During the curing process, the initial homogeneous solution of epoxy resin-curing agent-rubber generally forms rubber-rich and epoxy-rich phases by a phase separation process which is arrested by gelation or vitrification. The final morphology developed by the cure depends on relative rates of cure reaction and phase separation. Cure conditions and the initial rubber composition control the morphology of the system and thus control the mechanical properties of the system.
- OSTI ID:
- 441492
- Report Number(s):
- CONF-960214-; TRN: 96:006556-0025
- Resource Relation:
- Conference: 19. annual meeting of the Adhesion Society, Inc, Myrtle Beach, SC (United States), 18-21 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 19th annual meeting of the Adhesion Society; Ward, T.C. [ed.]; PB: 567 p.
- Country of Publication:
- United States
- Language:
- English
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