On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

Mourad, Abdel‐Hamid I.; Mozumder, Mohammad Sayem; Mairpady, Anusha; Pervez, Hifsa; Kannuri, Uma Maheshwara

doi:10.3390/ma10010085

Cited by 34 publications

(25 citation statements)

References 60 publications

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“…The modulus of elasticity is determined from the first stage of the curve while the yield and ultimate strengths are measured at the first peak and highest achieved stress before failure. This performance has been observed by Mourad et al [38][39][40][41].…”

Section: Compression Testingsupporting

confidence: 80%

“…(e.g., cellulose, cotton, wood, pulp, cane, synthetic fibers, cork, foamed rubber, melamine foam, polystyrene, polyethylene, polyurethane, and other polymers) materials. Although the physicochemical stability of polymers generally makes them good heat insulators, their mechanical properties can be further improved or modified by the addition of inorganic fillers to afford composites with enhanced strength [2][3][4][5][6][7][8][9]. Moreover, heterogeneity the composite should be tested to confirm the isotropic behavior [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical behavior of Emirati red shale fillers/unsaturated polyester composite

2020

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Herein, we focus on the formulation of polymer-based heat insulators using natural local shale as a filler. The polymer composite was fabricated by blending unsaturated polyester resin with local natural Emirati shale of filler of different filler sizes and solidifying the obtained thermosetting blends. The prepared samples are subjected to compressive strength, flexural strength, and tensile strength tests. The obtained results indicate that these composites exhibit mechanical properties superior to those of commercial heat insulators and comparable with those of other building materials. Specially, the prepared composite features a much higher tensile strength (20-40 MPa) than conventional heat insulators (< 1 MPa).

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Section: Compression Testingsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of Emirati red shale fillers/unsaturated polyester composite

2020

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“…In general, filler particles bond with the PE matrix by van der Waals force and hydrogen bond, which will enhance the mechanical and tribological properties of polymer composites . In HDPE/TiO 2 composites, the hydrogen bonding between reinforcement and matrix can be possible due to the interaction between hydroxyl group (TiOH) of TiO 2 and CH group of HDPE . The existence of TiOH groups on the starting powders of TiO 2 was demonstrated by Hashimoto et al .…”

Section: Resultsmentioning

confidence: 99%

“…have developed HDPE‐TiO 2 nanocomposites . Based on Fourier Transform Infrared analysis, the presence of alkyl CH, TiOTi, and TiO bonds along with symmetric bending of CH 3 group, scissoring of a long chain alkyl group, and occurrence of vibrational changes in the CH bonds were demonstrated . In another work, Wang and Ni .…”

Section: Resultsmentioning

confidence: 99%

Mechanical, wear, and dielectric behavior of TiO₂ reinforced high‐density polyethylene composites

Shaji

Shaik

Golla

2019

J of Applied Polymer Sci

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Almost fully dense high-density polyethylene (HDPE) reinforced with submicron-sized titanium dioxide (TiO 2 ) ceramic filler (up to 40 vol %) was fabricated using compression molding. More than 98.5% ρ th (theoretical density) could be obtained for all the HDPE compositions and its measured density varied between 0.94 and 2.25 g cc −1 . The hardness of HDPE increased considerably from 32.6 to 69 MPa (i.e., by two times) with the addition of 40 vol % TiO 2 . The compression strength (19.03-34.16 MPa) and modulus of elasticity (0.49-1.05 GPa) of HDPE were also found to increase with the addition of TiO 2 filler. However, the HDPE exhibited good ductility (59% strain) up to 20 vol % TiO 2 and it was reduced with the further addition of TiO 2 . The strain decreased drastically to 7.6% for HDPE-40 vol % TiO 2 . Addition of TiO 2 filler leads to a considerable decrease in wear rate and coefficient of friction (COF). The wear studies revealed that the HDPE-40% TiO 2 composite exhibited a low wear rate of 1.82 × 10 −5 mm 3 N m −1 and COF of 0.13. The dielectric constant of HDPE (at 10 kHz) was also considerably increased from 5.31 to 20.02 with the addition of TiO 2 up to 40 vol %. Achievement of such high dielectric constant for HDPE materials is the highest ever reported for HDPE.

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“…A few reports were found in the literature focusing conventional HDPE (from oil) and TiO 2 but surprisingly green HDPE has not been cited. Mourad et al studied HDPE nanocomposites with 5% TiO 2 , obtained by injection molding under different processing parameters. The results showed the influence of processing parameters like molding temperature and residence time on mechanical and thermal properties of HDPE/TiO 2 nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Permeability, Melt Flow Index, Mechanical, and Morphological Properties of Green HDPE Composites: Effect of Mineral Fillers

Escócio

Visconte

Nazareth

et al. 2018

Macromolecular Symposia

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In this study, two types of composites, both with the same polymeric matrix, high density polyethylene (HDPE) from renewable sources, also called green HDPE, are investigated. The mineral fillers insert into HDPE are vermiculite and titanium dioxide (TIO2). The objective of this work is the evaluation of two inorganic fillers in the HDPE composites and how their presence alters the properties of this HDPE derive from sugar cane ethanol. Composites obtain by extrusion with different contents of anatase type titanium dioxide (10–30 wt%/wt) and brazilian vermiculite (5–20 wt%/wt) are evaluated as for mechanical and morphological properties, melt flow index (MFI), and permeability. The addition of fillers cause little influence on tensile strength, but increased the elasticity modulus and decreased impact strength. in relation to morphology, it is found that particles of TIO2 are well dispersed in the HDPE matrix. For composites with vermiculite, its distribution in the polymer matrix is not so good as compared with composites of TIO2, especially in proportions higher than 10 wt%. The results of MFI show that by adding vermiculite the fluidity of polyethylene does not change, but the addition of TIO2 promotes a reduction in fluidity thus suggesting that a good dispersion has been achieved. Permeability increases on the addition of the two fillers, being more pronounced at high amounts (20% vermiculite and 30% TIO2). The analyzed properties, the addition of these fillers does not interfere negatively the properties of the green HDPE and can be considered an alternative toward low cost composites.

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On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

Cited by 34 publications

References 60 publications

Mechanical behavior of Emirati red shale fillers/unsaturated polyester composite

Mechanical behavior of Emirati red shale fillers/unsaturated polyester composite

Mechanical, wear, and dielectric behavior of TiO₂ reinforced high‐density polyethylene composites

Permeability, Melt Flow Index, Mechanical, and Morphological Properties of Green HDPE Composites: Effect of Mineral Fillers

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On the Injection Molding Processing Parameters of HDPE-TiO2 Nanocomposites

Cited by 34 publications

References 60 publications

Mechanical behavior of Emirati red shale fillers/unsaturated polyester composite

Mechanical behavior of Emirati red shale fillers/unsaturated polyester composite

Mechanical, wear, and dielectric behavior of TiO2 reinforced high‐density polyethylene composites

Permeability, Melt Flow Index, Mechanical, and Morphological Properties of Green HDPE Composites: Effect of Mineral Fillers

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Product

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Mechanical, wear, and dielectric behavior of TiO₂ reinforced high‐density polyethylene composites