Toughening of carbon fibre/polybenzoxazine composites by incorporating polyethersulfone into the interlaminar region

Belén Del Saz-Orozco; Dipa Ray; Aurélie Kervennic; P. T. McGrail; Walter F. Stanley

doi:10.1016/j.matdes.2015.12.138

Toughening of carbon fibre/polybenzoxazine composites by incorporating polyethersulfone into the interlaminar region

Belén Del Saz-Orozco, Dipa Ray, Aurélie Kervennic, P. T. McGrail, Walter F. Stanley

Research output: Contribution to journal › Article › peer-review

Abstract

Two grades of hydroxyl-terminated polyethersulfone (PES), one low and one high molecular weight, were incorporated into carbon fibre/polybenzoxazine (CF/PolyBZ) composites as interlayer toughening agents. A preliminary study on the PES-benzoxazine (BZ) resin mixtures was carried out via hot stage microscopy to observe the dissolution behaviour of the PES in the BZ during the curing cycle. CF/PolyBZ composites with PES in the interlaminar regions were produced by a vacuum resin infusion process and characterised via double cantilever beam (DCB) tests to determine the mode-I type interlaminar fracture toughness (G_IC). The DCB fracture surfaces were examined under an optical microscope and scanning electron microscope (SEM). The thermomechanical properties of the composites were also studied via dynamic mechanical analysis (DMA). The incorporation of both grades of PES resulted in a significantly improved G_IC and marginally increased glass transition temperature of the composite.

Original language	English
Pages (from-to)	297-303
Number of pages	7
Journal	Materials and Design
Volume	93
DOIs	https://doi.org/10.1016/j.matdes.2015.12.138
Publication status	Published - 5 Mar 2016

Keywords

Benzoxazine resin
Carbon fibres
Dynamic mechanical thermal analysis (DMTA)
Fracture toughness
Scanning electron microscopy (SEM)

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10.1016/j.matdes.2015.12.138

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title = "Toughening of carbon fibre/polybenzoxazine composites by incorporating polyethersulfone into the interlaminar region",

abstract = "Two grades of hydroxyl-terminated polyethersulfone (PES), one low and one high molecular weight, were incorporated into carbon fibre/polybenzoxazine (CF/PolyBZ) composites as interlayer toughening agents. A preliminary study on the PES-benzoxazine (BZ) resin mixtures was carried out via hot stage microscopy to observe the dissolution behaviour of the PES in the BZ during the curing cycle. CF/PolyBZ composites with PES in the interlaminar regions were produced by a vacuum resin infusion process and characterised via double cantilever beam (DCB) tests to determine the mode-I type interlaminar fracture toughness (GIC). The DCB fracture surfaces were examined under an optical microscope and scanning electron microscope (SEM). The thermomechanical properties of the composites were also studied via dynamic mechanical analysis (DMA). The incorporation of both grades of PES resulted in a significantly improved GIC and marginally increased glass transition temperature of the composite.",

keywords = "Benzoxazine resin, Carbon fibres, Dynamic mechanical thermal analysis (DMTA), Fracture toughness, Scanning electron microscopy (SEM)",

author = "\{Del Saz-Orozco\}, Bel{\'e}n and Dipa Ray and Aur{\'e}lie Kervennic and McGrail, \{P. T.\} and Stanley, \{Walter F.\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

year = "2016",

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doi = "10.1016/j.matdes.2015.12.138",

language = "English",

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AU - Del Saz-Orozco, Belén

AU - Ray, Dipa

AU - Kervennic, Aurélie

AU - McGrail, P. T.

AU - Stanley, Walter F.

PY - 2016/3/5

Y1 - 2016/3/5

N2 - Two grades of hydroxyl-terminated polyethersulfone (PES), one low and one high molecular weight, were incorporated into carbon fibre/polybenzoxazine (CF/PolyBZ) composites as interlayer toughening agents. A preliminary study on the PES-benzoxazine (BZ) resin mixtures was carried out via hot stage microscopy to observe the dissolution behaviour of the PES in the BZ during the curing cycle. CF/PolyBZ composites with PES in the interlaminar regions were produced by a vacuum resin infusion process and characterised via double cantilever beam (DCB) tests to determine the mode-I type interlaminar fracture toughness (GIC). The DCB fracture surfaces were examined under an optical microscope and scanning electron microscope (SEM). The thermomechanical properties of the composites were also studied via dynamic mechanical analysis (DMA). The incorporation of both grades of PES resulted in a significantly improved GIC and marginally increased glass transition temperature of the composite.

AB - Two grades of hydroxyl-terminated polyethersulfone (PES), one low and one high molecular weight, were incorporated into carbon fibre/polybenzoxazine (CF/PolyBZ) composites as interlayer toughening agents. A preliminary study on the PES-benzoxazine (BZ) resin mixtures was carried out via hot stage microscopy to observe the dissolution behaviour of the PES in the BZ during the curing cycle. CF/PolyBZ composites with PES in the interlaminar regions were produced by a vacuum resin infusion process and characterised via double cantilever beam (DCB) tests to determine the mode-I type interlaminar fracture toughness (GIC). The DCB fracture surfaces were examined under an optical microscope and scanning electron microscope (SEM). The thermomechanical properties of the composites were also studied via dynamic mechanical analysis (DMA). The incorporation of both grades of PES resulted in a significantly improved GIC and marginally increased glass transition temperature of the composite.

KW - Benzoxazine resin

KW - Carbon fibres

KW - Dynamic mechanical thermal analysis (DMTA)

KW - Fracture toughness

KW - Scanning electron microscopy (SEM)

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DO - 10.1016/j.matdes.2015.12.138

M3 - Article

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SN - 0264-1275

VL - 93

SP - 297

EP - 303

JO - Materials and Design

JF - Materials and Design

ER -

Toughening of carbon fibre/polybenzoxazine composites by incorporating polyethersulfone into the interlaminar region

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Keywords

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