Journal
MATERIALS
Volume 13, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/ma13092165
Keywords
carbon fibers; laminates; multifunctional composites; fracture toughness
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Funding
- Fondazione Cassa di Risparmio di Trento e Rovereto (CARITRO) [2017.0389]
- National Interuniversitary Consortium of Materials Science and Technology (INSTM)
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Cyclic olefin copolymer (COC) particles were dispersed in various amounts in an epoxy matrix, and the resulting blends were used to impregnate unidirectional carbon fibers (CF) by hand lay-up. The thermal stability was not substantially modified by the presence of COC particles. The mixture of the two polymers resulted in a phase separated blend and the flexural modulus and interlaminar shear strength progressively decreased with the addition of COC particles in the laminates. Mode I fracture toughness tests were executed on double cantilever beam specimens. The opened crack was then thermally mended at 190 degrees C for 1 h. The laminates containing 30 wt.% of COC particles showed a healing efficiency of similar to 180%.
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