Effect of nano TiO<sub>2</sub> particles on the properties of carbon fiber-epoxy composites

Al-Zubaydi, Ahmed; Salih, Rana M.; Al-Dabbagh, Balqees M.

doi:10.1177/1477760620977502

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…These bubbles have acted as stress concentration spots, besides the effect of the nanoclay low aspect ratio, which contributed to the more insufficient adhesion between nanoclay itself and the two-phase matrix to reduce the values of flexural strength of the composite. 29 This result agrees with Siddiqui et al, who suggested that the drop in flexural strength with increasing nanoclay content may have resulted from the agglomerations, especially at higher weight fractions than 3%, and this may have led to lessening of nanoclay ability as a reinforcement. The random distribution of nanoclay upon the matrix may have also contributed to the decrease in flexural strength as these agglomerations work as stress-concentration sites.…”

Section: Flexural Strengthsupporting

confidence: 91%

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Salih

Mohammed

2022

Progress in Rubber, Plastics and Recycling Technology

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Polymer composite materials were prepared using kaolinite nanoclay as reinforcement in different weight fractions (3, 5 and 7) %, and blends of epoxy and polymethyl methacrylate (PMMA) as matrices. The current work aims to prepare a composite material with good thermal and acoustic insulation, besides improved mechanical properties, and the investigation of the effect of this nano additive on the compatibility between the two constituents of the blend, and how this compatibility might be beneficial to the performance of the prepared composite. The blend with an optimum mixing ratio (OMR) was chosen via impact test results; thus, the (80:20) percentage of epoxy and PMMA was chosen. The reinforced specimens showed an improvement in mechanical (impact and flexural) properties besides sound insulation and thermal conductivity, with the specimen reinforced with 7% nanoclay having the highest impact strength (97*10−3) KJ/m2 and the highest thermal conductivity value of (0.34) W/m.°C, with a sound intensity value 95.6 decibels at frequency 10,000 Hz. The scanning electron microscope images showed two separate phases in the unreinforced blend. In comparison, the 7% reinforced specimen showed a rough interface between the two polymer phases, suggesting a positive effect of nanoclay addition on compatibility. The differential scanning calorimeter showed two distinct glass transition temperatures for both reinforced and neat specimens, which belong to the glass transitions of both constituents (epoxy and PMMA). The main difference is the lower temperature gradient accompanied with the (nanoclay/blend) composite than the neat one. Although the blend remained immiscible, nanoclay had contributed to the compatibility and improved mechanical properties.

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Section: Flexural Strengthsupporting

confidence: 91%

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Salih

Mohammed

2022

Progress in Rubber, Plastics and Recycling Technology

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“…However, adding reinforcements-a technique often employed to create wear-resisting composites-can lower the wear rate to a small percentage. Even at minor addition percentages, like the addition of nanoreinforcements and blending epoxy with other polymers, they enhance the protective layer [31].…”

Section: Wear Testmentioning

confidence: 99%

Preparation of polymeric composite for antiskid flooring purpose

2023

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Three polymeric blends were prepared using epoxy, nitrile butadiene rubber (NBR), and polyurethanes (PU) to develop antiskid surfaces with the required mechanical properties. The optimum mixing ratio was decided according to the results of the coefficient of friction and impact tests. Mechanical properties, including wear, bending, compression, impact, hardness, and water uptake were measured. Scanning electron microscopy (SEM) was used to investigate the microscopic features. The results showed variations in the values of coefficient of friction for the three blends, where the epoxy/ NBR specimens showed the highest value of 0.81, followed by specimens of epoxy blended with the two types of commercial polyurethanes, Sikaflex™ and Sikaswell™ of 0.73 and 0.69; respectively. The highest wear rate was noticed for the epoxy/NBR specimen, while the epoxy+Sikaflex showed the lowest wear rate, compared to other specimens. The epoxy/Sikaflex also showed the highest values for hardness, compared with epoxy/sikaswell and epoxy/NBR; respectively. The resultant blends showed improved mechanical properties with high slipping resistance, which makes the prepared blends as potential alternatives compared to traditional flooring materials.

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“…There is no statistically significant difference in flexural strength between the reinforced groups and the control group [13]. Impact strength is very important property ,it expressed in terms of the amount of energy absorbed before fracture, and it can calculated by [14]:…”

Section: Introductionmentioning

confidence: 98%

Study of The Dispersion Effect on the Mechanical Properties of Polypropylene Composites Reinforced With Polystyrene Nanofibers

Al-dabbagh¹

2022

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The purpose of this study was to construct a polypropylene composite reinforced with various weight ratios of polystyrene filaments and to examine the influence of the dispersion process on the mechanical characteristics of the finished composites. Utilized were polystyrene filaments with weight ratios ranging from 2% to 10%, with a weight increase of 0.2%. The influence of the polystyrene filament weight ratio on the final composite's mechanical characteristics, including Shore D hardness, density, modulus of elasticity, impact strength, and tensile strength, was investigated. According to the results, raising the weight ratio of polystyrene filaments enhanced all mechanical characteristics. The modulus of elasticity increased from 30 GPa with a reinforcement ratio of 2% to 90 GPa with a reinforcement ratio of 8%, and then decreased to 75 GPa with a 10% wt. whereas the density fell from 0.90 to 0.85 g/cm3 with a weight ratio of 2 percent to 10 percent filaments. When the weight percentage of fiber was raised from 2% to 8%, the impact strength rose to 3. 5 kJ/cm2 when 10% polystyrene nanofibers were present. In addition, the Shore hardness was enhanced from 30 to 50 by increasing the ratio of polystyrene nanofibers from 2% to 10% by weight. The material's tensile strength was also enhanced. When the filament weight ratio was raised from 2% to 8%, the tensile strength reduced from 32 MPa to 26.5 MPa. For all weight ratios of polystyrene filaments, the dispersion technique improved mechanical parameters such as tensile strength, impact strength, Shore D hardness, Young's modulus, and composite density.

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Effect of nano TiO₂ particles on the properties of carbon fiber-epoxy composites

Cited by 14 publications

References 17 publications

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Preparation of polymeric composite for antiskid flooring purpose

Study of The Dispersion Effect on the Mechanical Properties of Polypropylene Composites Reinforced With Polystyrene Nanofibers

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Effect of nano TiO2 particles on the properties of carbon fiber-epoxy composites

Cited by 14 publications

References 17 publications

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Preparation of polymeric composite for antiskid flooring purpose

Study of The Dispersion Effect on the Mechanical Properties of Polypropylene Composites Reinforced With Polystyrene Nanofibers

Contact Info

Product

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Effect of nano TiO₂ particles on the properties of carbon fiber-epoxy composites