TiO2 reinforced high-performance epoxy-co-polyamide composite coatings

Ali, Farman; Waseem, Muhammad; Khurshid, Rafaqat; Afzal, Adeel

doi:10.1016/j.porgcoat.2020.105726

Cited by 16 publications

(5 citation statements)

References 34 publications

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“…In FTIR spectra, the appearance of two sharp peaks at 1057 and 1027.7 cm −1 were attributed to the symmetric/asymmetric stretching vibration of the sulfonation of benzidine 30 . The C═O absorption band appeared at 1612 cm −1 , while the peak at 839 cm −1 attributes to the C─N stretching vibration, and the N─H deformational vibration peak is located at 1519 cm −1 31 . The successful sulfonation of BDA into BDSA was confirmed by FTIR analysis.…”

Section: Resultsmentioning

confidence: 78%

“…30 The C═O absorption band appeared at 1612 cm À1 , while the peak at 839 cm À1 attributes to the C─N stretching vibration, and the N─H deformational vibration peak is located at 1519 cm À1 . 31 The successful sulfonation of BDA into BDSA was confirmed by FTIR analysis. Figure 2 shows the FTIR spectra of ODADS, to confirm the sulfonation of ODA to ODADS.…”

Section: Resultsmentioning

confidence: 84%

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Synthesis of clay‐armored coatable sulfonated polyimide nanocomposites as robust polyelectrolyte membranes

Ali

Said

et al. 2021

J of Applied Polymer Sci

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Herein, coatable sulfonated polyimide (SPI) and clay-reinforced SPI membranes SPI-clay 3%, SPI-clay 5%, and SPI-clay 7% were successfully fabricated by one-step high temperature via direct imidization method. The membranes were cast as a coatable thin film using a solution casting method and grafted vermiculite clay nanoparticle were incorporated into the neat SPI as reinforcement by the sonication method. Three different formulated nanocomposite membranes were investigated using different characterization techniques such as Fourier transform infrared spectroscopy as peaks at 1166 and 1227 cm À1 confirmed successful sulfonation. In Proton ( 1 H) NMR synthesis of SPI confirmed as aromatic proton at 7.3-8.8 ppm depicts successful sulfonation and X-ray diffraction results confirmed the crystalline structure of clay, as its content increased (7%) clear diffraction peak arises at 6 and 25 . Scanning electron microscopy (SEM) provides information about surface morphology of clay reinforced SPI membranes, and SEM micrographs shown uniform dispersion of clay nanofillers and developed easy transfer of electron. Thermogravimetric analysis was performed to investigate the thermal stability of synthesized films, results of thermographs shown degradation in the range of 510-600 C. Different physicochemical parameters employed and their results show the effectiveness of synthesized clay reinforced SPI membranes. Water uptake (WU%) about 0.96%, hydrolytic about 98 h and oxidative stability up to 80 C, ions exchange capacity about 3.16 mmol/g for synthesized clay reinforced SPI membranes. Measurement regarding Dimensional changes was also investigated and dimensional changes (1.557 Δt/Δl). All these results reveal that the clay-reinforced coatable SPI membranes are a promising material for polymer electrolyte membranes to be used in fuel cell energy applications.

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 84%

Synthesis of clay‐armored coatable sulfonated polyimide nanocomposites as robust polyelectrolyte membranes

Ali

Said

et al. 2021

J of Applied Polymer Sci

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“…% Al2O3, TiO2, and Cu nanocomposite powders as a function of the milling time and its morphological changes were shown in Fig. (2). From the XRD images, clear peaks of Aluminum, Al2O3, TiO2 and Cu were obtained and confirmed the preferred nanocomposite was Al 7068-2 Wt.%Al2O3, TiO2, and Cu nanocomposite.…”

Section: Powder Morphology Evolutionmentioning

confidence: 88%

“…Aluminium 7068 alloy is widely used in the automotive, aerospace Industries and ordinance applications due to good mechanical properties compared with other aluminium alloys. Titanium Dioxide (TiO2) was used as reinforcement in epoxy-co-polyamide composite and got improvement in tensile strength and elastic modulus in the recent study [2]. The effect of copper (Cu) addition in the aluminium matrix gave on the resultant hardness increment [3].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Mechanical Behaviour of Al2O3, TiO2, and Cu Reinforced Al 7068 Nanocomposites

Sathiyarasu¹,

Jeyasimman²,

Sekaran³

2020

J. Mater. Sci. Technol. Res.

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This present research work aims at fabrication of AA7068 metal matrix composite reinforced with a different weight percentage of Al2O3, TiO2 and Cu (0 wt.%, 2 wt.%, and 4 wt.%) nanopowders through mechanical alloying of 30 hrs which is produced using powder metallurgy route. The consolidation pressure of 500 MPa was applied for compaction of the composite and sintered at a temperature of 600°C for two hrs in the presence of argon gas flow. An XRD result reveals that there are no intermetallic compounds formed in the milled powder after 30 hr of mechanical alloying. The reinforcement particles were well embedded and uniformly distributed in matrix composites was confirmed by bright-field emission transmission electron microscopy (FETEM) image and selected area diffraction (SAD) ring pattern. From the DSC curve of AA 7068–2.0 wt. % Al2O3, TiO2 and Cu nanocomposite powders after 30 hrs of mechanical alloying., the endothermic peak at 536.85°C corresponds to the melting of aluminium which was followed by a steady-state exothermic reaction at 579.51°C was obtained. The green density and sintered density of prepared nanocomposites were calculated and compared. Brinell hardness test has been conducted and the maximum value of 192 BHN was obtained by adding a weight percentage of 2 wt. % of Al2O3, TiO2 and Cu particles.

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“…Among these particles, titanium dioxide (TiO 2 ), and short carbon fibers (SCFs) have excellent advantages for the mechanical improvement. According to Farman, Molazemhosseini, and Srivastava et al, [12][13][14] TiO 2 nanoparticles addition greatly improve the mechanical and tribological properties of the epoxy composites due to its toughening and rolling effects with the enhancement of mechanical properties being the main focus. Saeed et al 15 found that adding nano-/micro-TiO 2 into epoxy coatings significantly improved their mechanical performances, thermal stability, and anti-fatigue.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, bonding and tribological performances of epoxy‐based nanocomposite coatings with multiple fillers

Tian

Tang

et al. 2022

J of Applied Polymer Sci

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Epoxy nanocomposite coatings play an important role in the wear protection of steel exposed in harsh service environments. How to improve the mechanical and wear resistance of coatings through filler addition is necessary to meet the industry application requirements. In the present paper, an epoxy-based nanocomposite coating was developed with addition of titanium dioxide (TiO 2 ), graphite, short carbon fibers (SCFs), and zinc sulfide (ZnS) for enhancement in mechanical, bonding to steel, and tribological performances.The reciprocating friction and wear performances of the coatings were investigated at room temperature and 100 C. The addition of nanometer sized TiO 2 and SCFs increased the tensile properties remarkably, while the addition of graphite and ZnS deteriorated the tensile properties. The fillers of graphite and ZnS had no obvious weakening effect on the interfacial shear strength between the coatings and steel, despite the solid lubrication of graphite and weak stiffness of ZnS. Compared with the epoxy sample, the wear rate of the coating filled with optimized filler combination (TTGCS5) was reduced by 19.5 times at room temperature and 25.9 times at 100 C. Addition of ZnS increased the wear resistance more pronounced compared to that of graphite at 100 C, which was attributed to formation of a compact, continuous and stable selflubricating transfer film on the coating surface. The optimized content of fillers was established for an epoxy coating to obtain the best friction rates of 0.51 and 0.56 (10 À4 mm 3 /[NÁm]) at 25 and 100 C, respectively.

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TiO2 reinforced high-performance epoxy-co-polyamide composite coatings

Cited by 16 publications

References 34 publications

Synthesis of clay‐armored coatable sulfonated polyimide nanocomposites as robust polyelectrolyte membranes

Synthesis of clay‐armored coatable sulfonated polyimide nanocomposites as robust polyelectrolyte membranes

Synthesis, Characterization and Mechanical Behaviour of Al2O3, TiO2, and Cu Reinforced Al 7068 Nanocomposites

Mechanical, bonding and tribological performances of epoxy‐based nanocomposite coatings with multiple fillers

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