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Titolo:
The effect of siloxane-type molecules on the interlaminar toughness of CFRP
Autore:
Vickers, PE; Boniface, L; Pricket, A; Watts, JF;
Indirizzi:
Univ Surrey, Sch Mech & Mat Engn, Guildford GU2 5XH, Surrey, England Univ Surrey Guildford Surrey England GU2 5XH ord GU2 5XH, Surrey, England
Titolo Testata:
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
fascicolo: 6, volume: 31, anno: 2000,
pagine: 559 - 569
SICI:
1359-835X(2000)31:6<559:TEOSMO>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBRE/EPOXY COMPOSITES; FATIGUE BEHAVIOR; FIBER COMPOSITES; FRACTURE; IMPACT;
Keywords:
carbon fibre; prepreg; fracture toughness; surface analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Watts, JF Univ Surrey, Sch Mech & Mat Engn, Guildford GU2 5XH, Surrey, England Univ Surrey Guildford Surrey England GU2 5XH H, Surrey, England
Citazione:
P.E. Vickers et al., "The effect of siloxane-type molecules on the interlaminar toughness of CFRP", COMPOS P A, 31(6), 2000, pp. 559-569

Abstract

The effect of the addition of two different release agents (high and low molecular weight), and one adhesion promoter have on the interlaminar chemistry and morphology of a carbon fibre reinforced polymer (CFRP) system has been studied by the use of time-of-flight secondary ion mass spectrometry (ToF-SIMS) and scanning electron microscopy (SEM). This was compared with thecritical strain-energy release rate (G(IC)) values measured by a double cantilever beam test. Unexpectedly, it was found that a low molecular weight polydimethylsiloxane (PDMS) had the effect of increasing the G(IC) value ofthe composite by a factor of two. Both the addition of an adhesion promoter, 3-aminopropyltriethoxysilane, and the removal of residual PDMS from the manufacturing process were found to have very little effect on the measuredG(IC) values, whilst the use of a viscous PDMS induces this parameter to fall by a factor of two. SEM micrographs revealed an unusual fracture morphology in the composite that displayed improved resistance to delamination, where the presence of voids or bubbles was observed on approximately 50% of the fracture surface. ToF-SIMS revealed that PDMS (residual from the manufacturing process) was present on all Mode I fracture surfaces, and mechanical data indicated that it did not prove to be detrimental to the toughness of the composite. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 06:39:55