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 °C for 1 h. The laminates containing 30 wt.% of COC particles showed a healing efficiency of ~180%.

Healable carbon fiber-reinforced epoxy/cyclic olefin copolymer composites / Mahmood, H.; Dorigato, A.; Pegoretti, A.. - In: MATERIALS. - ISSN 1996-1944. - ELETTRONICO. - 13:9(2020), p. 2165. [10.3390/ma13092165]

Healable carbon fiber-reinforced epoxy/cyclic olefin copolymer composites

Mahmood H.;Dorigato A.;Pegoretti A.
2020-01-01

Abstract

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 °C for 1 h. The laminates containing 30 wt.% of COC particles showed a healing efficiency of ~180%.
2020
9
Mahmood, H.; Dorigato, A.; Pegoretti, A.
Healable carbon fiber-reinforced epoxy/cyclic olefin copolymer composites / Mahmood, H.; Dorigato, A.; Pegoretti, A.. - In: MATERIALS. - ISSN 1996-1944. - ELETTRONICO. - 13:9(2020), p. 2165. [10.3390/ma13092165]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/272721
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