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Noureddine Ramdani

Other affiliations: Harbin Institute of Technology
Bio: Noureddine Ramdani is an academic researcher from Harbin Engineering University. The author has contributed to research in topics: Thermogravimetric analysis & Differential scanning calorimetry. The author has an hindex of 15, co-authored 31 publications receiving 642 citations. Previous affiliations of Noureddine Ramdani include Harbin Institute of Technology.

Papers
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Journal ArticleDOI
TL;DR: In this article, a new type of composite based on phthalonitrile resin reinforced with silicon carbide (SiC) microparticles was prepared and the effect of the micro-SiC particles on the mechanical and thermal properties has been studied.

87 citations

Journal ArticleDOI
TL;DR: In this paper, a novel furan-containing tetrafunctional fluorene-based benzoxazine monomer with bisphenol-and diamine-type oxazine rings was successfully prepared.
Abstract: A novel furan-containing tetrafunctional fluorene-based benzoxazine monomer with bisphenol- and diamine-type oxazine rings was successfully prepared. The resulting polybenzoxazine exhibits extremely higher glass transition temperature (440 °C) and better thermal stability than difunctional furan-containing fluorene-based and traditional multifunctional benzoxazine resins.

72 citations

Journal ArticleDOI
TL;DR: In this article, the nano-nitride (SN) nanoparticle-reinforced polybenzoxazine nanocomposites were produced with good processability at various fractions of nano-SN ranging between 0 and 30% via a compression molding technique.

69 citations

Journal ArticleDOI
TL;DR: In this paper, a new type of nanocomposites was prepared by reinforcing a high performance bisphenol-A phthalonitrile resin with different amounts of silane surface modified titania nanoparticles.

57 citations

Journal ArticleDOI
TL;DR: In this article, the effect of Crab Shell Particles (CSP) on the thermal and thermomechanical properties of polybenzoxazine has been studied for various molecular ratios ranging between 0% and 30%.

55 citations


Cited by
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[...]

08 Dec 2001-BMJ
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

33,785 citations

Journal ArticleDOI
TL;DR: A comprehensive review of benzoxazine resins using natural renewable raw materials is presented in this article, where the synthesis of polybenzoxazines from natural renewable materials has attracted interest because of the environmental impacts caused by conventional petroleum-based materials.

144 citations

Journal ArticleDOI
TL;DR: In this paper, five commercially available amines: m-phenylenediamine (A1), m-xylylenediamines (A2), isophorone diamine (I2), trimethylhexamethylenediaminea (A4), and 4,4′-diaminodiphenyl sulfone (A5), were examined as nucleophilic hardeners for bis-benzoxazine monomers based on aniline paired with bisphenol-A (BA-a).
Abstract: Five commercially available amines: m-phenylenediamine (A1), m-xylylenediamine (A2), isophorone diamine (A3), trimethylhexamethylenediamine (A4), and 4,4′-diaminodiphenyl sulfone (A5), were examined as nucleophilic hardeners for bis-benzoxazine monomers based on aniline paired with bisphenol-A (BA-a) or bisphenol-F (BF-a). The reactivities and reaction mechanisms of their mixtures with BA-a were investigated using FTIR and NMR spectroscopy, DSC, and HPLC techniques. It was found that BA-a rapidly cured with the amines upon heating at 120 °C or 150 °C. The cure rate was similar to the amine/epoxy curing process in practical uses, and significantly faster than the ring-opening polymerization of bulk BA-a. The possible reaction mechanism was supported by the experimental results and includes three successive steps: (i) nucleophilic substitution at the carbon atom (O–C–N) in the oxazine ring by the amine, (ii) thermal decomposition of the resulting aminomethanaminium structure, and (iii) electrophilic addition of the newly formed iminium ion with the aromatic ring to form stable aminomethylphenol structures. These findings are helpful to improve the thermosetting resins in terms of their chemical structure, material properties, and processability.

118 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of the above-mentioned nanomaterials on the corrosion protection performance of polymer coatings are discussed and a comprehensive review about recent studies on corrosion resistance of these nanocomposite coatings is provided.

111 citations