The role of sizing resins, coupling agents and their blends on the formation of the interphase in glass fibre composites

Berg, John C.; Jones, Frank R.

doi:10.1016/s1359-835x(98)00091-8

Cited by 65 publications

(20 citation statements)

References 25 publications

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“…Berg and Jones reported that both sized and unsized glass fibres in a range of epoxy resin based composites exhibited ISS values in the range 35-50 MPa [31]. The ISS values obtained depended, in this study, on the molecular weight of the sizing agent [31]. Fragmentation was found to not be affected by the addition of a silane coupling agent, although in combination with a sizing agent, the ISS reduced [31].…”

Section: Micromechanical Properties Of Model Composites Using Luminesmentioning

confidence: 45%

“…After deducting the effect of thermal stresses Jones and co-workers found values in the range 11-13 MPa for the ISS between an epoxy resin and as-received glass fibres [30]. Berg and Jones reported that both sized and unsized glass fibres in a range of epoxy resin based composites exhibited ISS values in the range 35-50 MPa [31]. The ISS values obtained depended, in this study, on the molecular weight of the sizing agent [31].…”

Section: Micromechanical Properties Of Model Composites Using Luminesmentioning

confidence: 46%

“…The ISS values obtained depended, in this study, on the molecular weight of the sizing agent [31]. Fragmentation was found to not be affected by the addition of a silane coupling agent, although in combination with a sizing agent, the ISS reduced [31]. Phase stepping photoelastic measurements of the ISS between an E-glass fibre and epoxy have been reported, yielding values of about 33 MPa for a plasma coated fibre and 38 MPa for non-coated fibres [8].…”

Section: Micromechanical Properties Of Model Composites Using Luminesmentioning

confidence: 56%

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Deformation micromechanics of model glass fibre composites

Hejda

Kong

Young

et al. 2008

Composites Science and Technology

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Section: Micromechanical Properties Of Model Composites Using Luminesmentioning

confidence: 45%

Section: Micromechanical Properties Of Model Composites Using Luminesmentioning

confidence: 46%

Section: Micromechanical Properties Of Model Composites Using Luminesmentioning

confidence: 56%

See 1 more Smart Citation

Deformation micromechanics of model glass fibre composites

Hejda

Kong

Young

et al. 2008

Composites Science and Technology

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“…In this case study, energy absorbed due to the micromechanical damages Ð fragmentation of the ®bers E fr , debonding of the ®ber/matrix interphase E de , and ®ber frictional sliding E fri Ð was taken into consideration as shown in Eq. (8).…”

Section: Energy Absorption In Composite Armor Subjected To Ballistic mentioning

confidence: 99%

The effects of glass-fiber sizings on the strength and energy absorption of the fiber/matrix interphase under high loading rates

Tanoğlu

McKnight

Palmese

et al. 2001

Composites Science and Technology

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The interphases of various sized E-glass-®ber/epoxy-amine systems were tested at displacement rates in the range 230±2450 mm/s by a new experimental technique (dynamic micro-debonding technique). By this method, the rate-dependent interphase properties, apparent shear strength and absorbed energies due to debonding and frictional sliding, were quanti®ed. The systems include unsized, epoxy-amine compatible, and epoxy-amine incompatible glass ®bers. The high displacement rates that induce high-strain-rate interphase loading were obtained by using the rapid expansion capability of piezoelectric actuators (PZT). The results of dynamic micro-debonding experiments showed that the values of interphase strength and speci®c absorbed energies varied in a manner that is dependent on the sizing and exhibited signi®cant sensitivity to loading rates. The unsized ®bers exhibit greater frictional sliding energies that could provide better ballistic resistance, while the compatible sized ®bers show higher strength values that improve the structural integrity of the polymeric composites. In addition, signi®cantly higher amounts of energy are absorbed within the frictional sliding regime compared to debonding. By using the experimental data obtained, a case study was performed to reveal the importance of the interphase related micro damage modes on energy absorption (and therefore ballistic performance) of glass/ epoxy composite armor. #

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“…Condensation reaction of silane is closely related to the thickness of the silane layer formed when applied, and to its concentration in the solution, having an important effect on the quality of bonding produced [28]. It has been suggested that silanes form three different oligomer layers when applied as a sole coat [29] and that just the one closest to the ceramic surface is necessary for bonding, the outermost layers cannot bond and may be detrimental [30]. By eliminating these layers and other by-products as water and ethanol, covalent bond formation can be promoted [28].…”

Section: Discussionmentioning

confidence: 99%

Effect of Different Silane Treatments on Long-Term Bonding Between Non-Etched Glass-Ceramic and Resin Cement

Murillo-Gómez

Góes²

2017

Odovtos - Int J Dent Sc

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The present study evaluated the bond strength between glass-ceramic and resin cement, using different silane treatments, performing no previous hydrofluoric acid (HF) etching on ceramic surface, after short- and long- term storage. One hundred and eighty glass-ceramic plaques (IPS e.max CAD®) were polished and divided into six groups (n=30) to receive different silane treatments: (1) RCP-RelyX Ceramic Primer® (one-bottle silane), (2) RCP+SB-RelyX Ceramic Primer and Adper Singlebond2® (silane plus separated adhesive), (3) SBU-Scotchbond Universal® (silane-containing universal adhesive), (4) CP-Clearfil Ceramic Primer® (silane/MDP primer), (5) NC-no-silane (negative control) and (6) PC-Previous HF etching (5%, 20s) plus RelyX Ceramic Primer® (positive control). Two resin cement cylinders (Rely X Ultimate®) were built on each plaque. Each group was divided into two sub-groups to be stored for 24 hours (24h) or 6 months (6mo) in distilled water at 37°C (n=15). Then microshear (µSBS) testing was performed. Failure mode was analyzed using scanning electron microscopy (SEM). Data were statistically analyzed by two-way ANOVA and Tukey´s test (α=0.05). Both factors and their interaction resulted statistically significant (p≤0.05). PC obtained the highest µSBS values (in MPa) at both storage times (24h: 28.11±2.44; 6mo: 19.10±3.85). After 24h storage, groups RCP+SB (10.86±3.62), SBU (8.37±4.33) and CP (8.05±3.62) were not statistically different from NC (8.00±2.51); only RCP (19.73±4.63) and PC obtained higher values. After 6 months, only PC showed higher values than NC (0.04±0.01). Cohesive failure in resin cement was more prevalent for RCP-24h and PC, while adhesive failure was more frequent among all other groups. Clinical relevance: None of the commercially available silane primers tested, improve long- term ceramic/cement bonding without performing HF etching on ceramic surface. Combination of HF acid and silane, remain as a gold standard treatment for glass-ceramic materials.

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The role of sizing resins, coupling agents and their blends on the formation of the interphase in glass fibre composites

Cited by 65 publications

References 25 publications

Deformation micromechanics of model glass fibre composites

Deformation micromechanics of model glass fibre composites

The effects of glass-fiber sizings on the strength and energy absorption of the fiber/matrix interphase under high loading rates

Effect of Different Silane Treatments on Long-Term Bonding Between Non-Etched Glass-Ceramic and Resin Cement

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