Surface modification of boron fibres for improved strength in composite materials
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- Authors:
- BRACK, N
RIDER, A. N
HALSTEAD, B
PIGRAM, P. J - Author Affiliations:
- Centre for Materials and Surface Science and Department of Physics, La Trobe University, Bundoora Victoria, 3086, Australia
D.S.T.O., Air Vehicles Division, Fisherman's Bend, Victoria, 3207, Australia - Source:
- Journal of adhesion science and technology. 19(10):857-877
- Publication Date:
- 2005-01-01
- Language:
- English
- Abstract:
- When boron fibres are combined with an organic matrix, such as an epoxy resin, a high-performance composite structure is created. This study investigates the surface chemistry of plasma- and organosilane-treated boron fibres with the key aim to improving the adhesion properties between the boron fibre and the epoxy matrix. Optimisation of this interfacial region plays a critical role in influencing the mechanical behaviour of composite materials and has considerable industrial applications in the aerospace and manufacturing industries. The surface chemistry of a model boron surface and boron fibres was monitored using a combination of X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (TOF-SIMS). Initial investigation of the as-received fibres showed the presence of silicone contamination on the fibre surface, which would affect adhesion. Removal of this contaminant through solvent cleaning and plasma oxidation provided an ideal surface for attachment of the organosilane adhesion promoter. A model for the interaction of the organosilane with a boron surface is proposed. The pull-out strength of boron fibres, with different surface treatments, embedded in the epoxy resin was measured using a custom designed adhesiometer. Compared with as-received boron fibres, a 6-fold improvement in the apparent interfacial shear strength was achieved for the organosilane treated fibres. Optical microscopy was used to determine the failure mechanisms between the fibre and epoxy resin. Typically, as the surface treatment improved adhesion, the locus of failure changed from the boron-epoxy interface to failure within the epoxy and ultimately fibre breakage.
- Notes:
- Polymer industry, paints, wood
- Subjects:
- Polymers, paint and wood industries
Polymères, industries des peintures et bois
Sciences exactes et technologie
Exact sciences and technology
Sciences appliquees
Applied sciences
Industrie des polymeres, peintures, bois
Polymer industry, paints, wood
Technologie des polymères
Technology of polymers
Formes d'application et semiproduits
Forms of application and semi-finished materials
Matériaux composites
Composites
Fibre minérale
Mineral fiber
Fibra inorgánica
Adhésivité
Adhesivity
Adhesividad
Agent accrochage
Coupling agent
Agente enganche
Analyse surface
Surface analysis
Análisis superficie
Epoxyde résine
Epoxy resin
Epóxido resina
Etude expérimentale
Experimental study
Estudio experimental
Fibre bore
Boron fiber
Fibra boro
Interface fibre matrice
Matrix fiber interface
Interfase fibra matriz
Matériau composite
Composite material
Material compuesto
Matériau renforcé fibre
Fiber reinforced material
Material reforzado fibra
Mode rupture
Fracture mode
Modo ruptura
Optimisation
Optimization
Optimización
Propriété interface
Interface properties
Propiedad interfase
Propriété mécanique
Mechanical properties
Propiedad mecánica
Relation mise en oeuvre propriété
Property processing relationship
Relación puesta en marcha propiedad
Résistance cisaillement
Shear strength
Resistencia cizallamiento
Silane organique
Organic silane
Silano orgánico
Traitement par plasma
Plasma assisted processing
Traitement surface
Surface treatment
Tratamiento superficie
Promoteur adhérence
Résistance cisaillement interfacial
Boron fibres
epoxy
organosilane
surface analysis - Format:
- Academic Journal
- Database:
- PASCAL Archive
- Journal:
- Journal of adhesion science and technology
- Volume:
- 19
- Issue:
- 10
- Page Start:
- 857
- Page Count:
- 21
- ISSN:
- 01694243
- Publisher:
- Leiden: Brill, 2005.
- Document Type:
- Article
- Physical Description:
- print, 36 ref
