Monitoring of nylon 6,6/carbon fiber composites processing by X‐ray diffraction and thermal analysis

Botelho, Edson Cocchieri; Nogueira, Clara Leal; Rezende, Mirabel Cerqueira

doi:10.1002/app.11335

Cited by 32 publications

(27 citation statements)

References 12 publications

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“…Continuous fiber composite materials have been widely used in the aerospace field, as well as in high-technology products [1][2][3][4][5][6][7][8][9][10]. Polymericcomposite materials offer many advantages compared to metals, mainly because they exhibit high strength and stiffness-to-weight ratio, excellent fatigue properties and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of adhesion of continuous fiber–epoxy composite/aluminum laminates

Botelho¹,

Silva²,

Pardini³

et al. 2004

Journal of Adhesion Science and Technology

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Continuous fiber composite/metal laminates (FMLs) offer significant improvements over currently available composite materials for aircraft structures due to their excellent fatigue endurance and low density. Glass fiber-epoxy composite laminae and aluminum foil (GLARE) are commonly used to obtain these hybrid laminates. In this work, FMLs were produced by treating the aluminum foil to promote adhesion bonding by two methods: sulphuric chromic acid etching (SCAE) and chromic acid anodization (CAA). The surface treatments were evaluated by contact angle, roughness and scanning electron microscopy techniques. In order to compare different families of fiber composite/metal laminates, carbon fiber and glass fiber fabrics were used as reinforcements for the hybrid laminates. The adhesion of the hybrid laminates was evaluated by scanning electron microscopy (SEM) and three-point bending test. CAA resulted in better wetting properties. The interlaminar shear strength results for both carbon fiber-epoxy/metal and glass fiber-epoxy metal, were close to the interlaminar shear strength results found in the literature (approx. 40.0 MPa).

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Section: Introductionmentioning

confidence: 99%

Evaluation of adhesion of continuous fiber–epoxy composite/aluminum laminates

Botelho¹,

Silva²,

Pardini³

et al. 2004

Journal of Adhesion Science and Technology

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“…The molecules are linked by hydrogen bonds between CO and NH groups, to form sheets . Our PA sample should show two strong diffraction peaks, one located at 2 θ = 20.2° and the other one at 2 θ = 23.4° which might allow estimating a crystallinity value as well . A third peak might be at 2 θ = 22°.…”

Section: Resultsmentioning

confidence: 99%

Synthetic fabrics coated with zinc oxide nanoparticles by electroless deposition: Structural characterization and wetting properties

Frunză

Preda

Matei

et al. 2013

J Polym Sci B Polym Phys

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Electroless deposition was successfully applied in developing crystalline particles of zinc oxide onto polyester textile materials; this deposition is here presented in comparison with other materials made from poly(lactic acid), polyamide or hemp. Structural and spectroscopic characterization of the raw and deposited samples has been performed. The structure of zinc oxide particles was that of wurtzite type as indicated by X‐ray diffraction (XRD) and scanning electron microscopy (SEM). Crystallites were 20–500 nm in diameter and up to 1 µm in length. The grown particles cover the fibers not only on the fabric surface but in the textile depth. Contact angle measurement by the sessile drop method was used to study the wettability behavior of the investigated composite systems. The hierarchical roughness structure generates superhydrophobic properties onto polyester fabrics, for which water contact angles exceed 150°. The other functionalized samples also become more hydrophobic after deposition. Cassie‐Baxter model was found suitable to describe the behavior, though the fraction of surface occupied by the water–solid interface is high enough. The electroless deposition technique applied previously for cotton fabrics was once more proven to be highly reproducible, easy scalable, and cheap, allowing a wide range of applications. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 1427–1437

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“…However, their exploitation has been restricted due to their poor resistance to the impact and crack initiation. Epoxy resins have been considered as the type of thermoset polymers, which serve as a common matrix for aramid-fiber composites [1][2][3][4] .…”

Section: Introductionmentioning

confidence: 99%

Novel Hybrids Derived from Poly(thiourea-amide)/Epoxy and Carbon Nanotubes

Kausar

Iqbal

Hussain

2013

Polymer-Plastics Technology and Engineering

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In the present work, nanocomposites of a matrix composed of poly(thiourea-amide) (an aramid)/epoxy (thermoset) and CNTs were fabricated. The hybrids were prepared by in situ polymerization using functionalized and nonfunctionalized CNTs. Amine-terminated poly(thiourea-amide)/epoxy/CNTs hybrids were cured at 120 C with different CNTs content. Chemical linking between amine terminated poly(thiourea-amide) and epoxide group of Bisphenol A diglycidyl ether (DGEBA) formed PTA/DGEBA complex. Hydrogen bonding of PTA with functionalized CNTs was expected to improve the hybrid characteristics. Tensile strength of functional hybrids ranged 57.36-60.68 MPa. 10% gravimetric loss (569-590 C) and T g of PTA/DGEBA/functional CNTs (235-238 C) showed improvement over PTA/DGEBA/nonfunctional CNTs.

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Monitoring of nylon 6,6/carbon fiber composites processing by X‐ray diffraction and thermal analysis

Cited by 32 publications

References 12 publications

Evaluation of adhesion of continuous fiber–epoxy composite/aluminum laminates

Evaluation of adhesion of continuous fiber–epoxy composite/aluminum laminates

Synthetic fabrics coated with zinc oxide nanoparticles by electroless deposition: Structural characterization and wetting properties

Novel Hybrids Derived from Poly(thiourea-amide)/Epoxy and Carbon Nanotubes

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