Effect of potassium titanate whiskers on the performance of vacuum molded glass/epoxy composites

Sudheer, M.; Vishwanathan, KH; Raju, K. Sita Rama; Bhat, Thirumaleshwara N.

doi:10.1177/0731684413485827

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…The interaction of APTES with natural fibers mainly go through the succeeding steps, presented in Scheme . Similar behavior has also been reported by several authors between silane coupling agent and natural fiber .…”

Section: Methodssupporting

confidence: 90%

“…Herein, we have studied the synergistic reinforcement of montmorillonite clays and sisal fibers on the UP toughened epoxy (Epoxy/UP) system , resulting in enhanced performances in thermal and mechanical properties . In this respect, montmorillonite (MMT) clays have considered global interest as nanofillers in the preparation of polymeric nanocomposites due to their dramatic improvements of properties .…”

Section: Introductionmentioning

confidence: 99%

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Effect of cloisite 30B clay and sisal fiber on dynamic mechanical and fracture behavior of unsaturated polyester toughened epoxy network

2015

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This study examined the dynamic mechanical properties of sisal fiber reinforced unsaturated polyester (UP) toughened epoxy nanocomposites. The chemical structures changes in Epoxy, UP and UP toughened epoxy (Epoxy/UP) systems were characterized by Proton Nuclear magnetic resonance ( 1 HNMR) spectroscopy. The morphological alterations of the nanocomposites were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The untreated, chemically treated fibers, nanoclays, and the fiber reinforced Epoxy/UP nanocomposites were confirmed by FTIR spectrometer. The obtained mechanical results showed that alkali-silane treated fibers improve the tensile strength (96%) and flexural strength (60%) of the Epoxy/UP nanocomposite than that of Epoxy/UP blend due to the strong interfacial bonding between the sisal fiber and matrix. The fracture toughness (K IC ) and fracture energy (G IC ) of treated sisal fiber reinforced DGEBA/UP/C30B nanocomposites found to be higher than that of untreated sisal fiber nanocomposites. The dynamic mechanical analysis (DMA) reveals that the fiber reinforced Epoxy/ UP nanocomposites contains 30 wt% treated fiber and 1 wt% nanoclays, exhibits the highest storage modulus and better glass transition temperature (T g ) among the other kind of systems. The surface morphology of the fibers, fractured surface of the resins and composites were confirmed by scanning electron microscope (SEM). POLYM. COMPOS., 37:2832-2846, 2016. V C 2015 Society of Plastics Engineers

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Section: Methodssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effect of cloisite 30B clay and sisal fiber on dynamic mechanical and fracture behavior of unsaturated polyester toughened epoxy network

2015

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“…In addition, by means of stirring, coatings, and formation of film, the distribution of whiskers is uniform compared with putting the mixture of PEK-C and CSW powder between layers or dispersing whiskers alone in the matrix epoxy resin. 15 When epoxy resin was injected under high pressure, whiskers can remain stable in the films instead of moving with high pressure and flowing with the resin before forming three-dimensional structure with glass fabric in the stage of resin curing. Material property characterization for tensile strength, flexural strength, interlaminar shear strength, and G IC interlaminar fracture toughness was performed.…”

Section: Introductionmentioning

confidence: 99%

Ex-situ method for toughening glass/epoxy composites by interlaminar films made of polyetherketone cardo and calcium sulfate whisker

Guo

Liu

et al. 2014

Journal of Reinforced Plastics and Composites

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Epoxy matrix composites were toughened by introducing films into fiberglass fabric layers based on an ex-situ vacuumassisted resin transfer molding technique. The mixture films were made of a certain polyetherketone cardo and calcium sulfate whiskers with different mass percent. The toughening mechanism was studied by dynamic mechanical thermal analysis and scanning electron microscopy. The addition of calcium sulfate whisker changed glass transition temperatures of Epoxy Resin (EP) and polyetherketone cardo, indicating that films with calcium sulfate whisker were melting during the curing of epoxy resin and forming the mixture of EP phase, polyetherketone cardo phase, and calcium sulfate whisker between the layers of composites. Meanwhile, the results indicated that calcium sulfate whiskers and fiberglass fabric formed three-dimensional structure between the layers of composites to toughen the composites. The results of the mechanical properties show that the interlaminar shear strength and fracture toughness (G IC ) were obviously improved meanwhile tensile strength and flexural strength kept stable whether the addition of films or not. Maximum values of the interlaminar shear strength and fracture toughness (G IC ) were 22% and 95% higher than that of the controlled specimens without films, respectively. The interlaminar mechanical properties improved with the addition of films made of polyetherketone cardo and calcium sulfate whisker, which is benefit for the improvement of whole mechanical properties and wide usage of laminate composites.

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Friction and wear properties of phenolic composites with dual inorganic oxide‐modified titanate whiskers

et al. 2020

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Inorganic oxides, alumina and silica, were successively modified on titanate whiskers surface. Enrolled into phenolic resin, the phenolic/whisker composites were prepared by melting molding, with intentions for wearing property. The alumina‐coated whisker surface fulfilled wear resistance, while the outer silica layer was less stiff for compatible with polymer matrix. The dual surface modifications improved the whiskers dispersion in the matrix, enhanced interfacial adhesion, and significantly triggered wear resistance of the composites. With 7.5 wt% multiply modified whiskers involved, the phenolic composite showed specific wear rate of 0.49 × 10−5 mm3/Nm, remarkably lower than that of phenolic resin (4.79 × 10−5 mm3/Nm). The worn surface of the composites detected by a scanning electron microscope showed abrasive wear with slight fatigue wear. Optical microscope images indicated that the whisker‐filled composite had a shallow scratch on the worn surface, which positively favored wear resistance.

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Effect of potassium titanate whiskers on the performance of vacuum molded glass/epoxy composites

Cited by 10 publications

References 26 publications

Effect of cloisite 30B clay and sisal fiber on dynamic mechanical and fracture behavior of unsaturated polyester toughened epoxy network

Effect of cloisite 30B clay and sisal fiber on dynamic mechanical and fracture behavior of unsaturated polyester toughened epoxy network

Ex-situ method for toughening glass/epoxy composites by interlaminar films made of polyetherketone cardo and calcium sulfate whisker

Friction and wear properties of phenolic composites with dual inorganic oxide‐modified titanate whiskers

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