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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 719-720Comparison between Commercial and Synthesized...

Comparison between Commercial and Synthesized Hyperbranched Polyesters Regarding Fracture Toughness of Epoxy Matrix

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Abstract:

A hyperbranched poly (butylene adipate) (HPBA) polymer was compared with a commercial dendritic polyol (Boltorn H311) as toughening agent for a commercial one-part epoxy resin, Cycom 890 RTM. Both modifiers were added in a weight percentage 1, 3, 5 and 10 %. Blends obtained were characterized through DMA and impact resistance (K_IC). SEM morphology were also evaluated. The toughness improvement was achieved without substantial impairment on thermomechanical properties. Fractography analysis has evidenced the fracture standard changing from brittle to ductile by modifiers addition.

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Materials and Engineering Technology

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Periodical:

Applied Mechanics and Materials (Volumes 719-720)

Pages:

110-113

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.719-720.110

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Online since:

January 2015

Authors:

Thatiane Brocks*, Veronica Ambrogi, Maria Odila Hilário Cioffi

Keywords:

Fracture, Hyperbranched Polymer, One-Part Epoxy Resin, Toughness Improvement

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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