Processing of Polymer‐Based Nanocomposites

Nayak, Ramesh Kumar; Mahato, Kishore Kumar; Ray, Bankim Chandra

doi:10.1002/9783527820979.ch4

Cited by 18 publications

(28 citation statements)

References 56 publications

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“…Later, it increases again mainly because of degradation of continuous phase which give rise to penetration of moisture through the microcracks generated due to the presence of voids. Almost similar trends were observed by Nayak et al in their work. It is further observed that for neat epoxy, saturation in water absorption occurs around 72 hours whereas for its composites, it saturation attains at 144 hours for Set A composites whereas for Set B composites, saturation occurs much earlier that is, at around 120 hours.…”

Section: Resultssupporting

confidence: 90%

Influence of particulate surface treatment on physical, mechanical, thermal, and dielectric behavior of epoxy/hexagonal boron nitride composites

Agrawal

Chandrakar

2019

Polymer Composites

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Physical, mechanical, thermal, and dielectric behavior of surface modified hexagonal boron nitride (hBN) in epoxy matrix was investigated in this paper. Effective treatment of microsize boron nitride involved silane coupling agent, (γ‐aminopropyl)triethoxysilane such that the coating resulted from the treatment amounted to 2% of the weight of silane coupling agent of the treated BN. The present work revealed that the chemical treatment of BN surface could effectively enhance the adhesion between matrix and filler material. The dispersion and wettability of the BN powder in epoxy matrix after surface treatment were improved. These imparted improved physical and excellent mechanical and thermal properties to the developed material. The experimental study on thermal properties of fabricated composites indicated that incorporation of modified particles exhibits improved glass transition temperature. As filler loading increases, coefficient of thermal expansion of composite decreases which further decreases when treated filler were used. Further, appreciable improvement in thermal conductivity is obtained when treated hBN is used in place of untreated one. The dielectric properties are investigated for wide frequency range and filler content and found to be increased with hBN content and decrease with frequency enhancement. Furthermore, mechanical properties of such composites were also largely enhanced when treated fillers were used. With modified properties, the presently developed material is suitable for microelectronic applications.

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Section: Resultssupporting

confidence: 90%

Influence of particulate surface treatment on physical, mechanical, thermal, and dielectric behavior of epoxy/hexagonal boron nitride composites

Agrawal

Chandrakar

2019

Polymer Composites

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“…The increase in flexural strength is due to the reason that TiO 2 particles with smaller size have stronger interfacial interaction between the matrix and TiO 2 . However, when the size of TiO 2 is 60 nm, the agglomerates reduce the active surface area to interact with polymeric matrix and fibres . It will reduce the load transfer efficiency at the matrix‐fibre interface, thereby decreasing the flexural strength of the laminate.…”

Section: Resultsmentioning

confidence: 99%

The Effects of Concentration and Particle Size of TiO₂ on the Dielectric Properties of Polyolefin‐Based Microwave Substrates

Wang

Mao

et al. 2020

ChemistrySelect

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Fibre-reinforced polybutadiene/ styrene-butadiene-styrene triblock copolymer/ ethylene-propylene-diene terpolymer/titanium dioxide (PB/SBS/EPDM/TiO 2 ) composite laminates with superior dielectric properties were fabricated by impregnation and hot pressing. The effects of concentration and particle size of rutile spherical TiO 2 on the microwave dielectric properties of the PB/SBS/EPDM/TiO 2 composite laminates were investigated at microwave frequency region. Additionally, the mechanical, thermal, and water absorption properties of the laminates were also evaluated. Results indicated that the dielectric properties were obviously improved with the increase of concentration or the decrease of particle size. The laminate filled with 230 nm TiO 2 at a filler loading of 70 wt% possessed high dielectric constant (7.03, 10 GHz), low dielectric loss (0.0042, 10 GHz), outstanding mechanical, thermal properties, and low water absorption. Enhanced dielectric properties and other prominent properties enable the fibre-reinforced polyolefin-based composite laminates to be a potential candidate for microwave substrate applications.

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“…Similar kind of the behavior was observed in glass fiber-epoxy composite reinforced with nano-TiO2. [30] In the Figure 9, though, ILSS for composites with nanofillers of 0.4, 0.6, 1.2, and 1.8 wt% is almost same but strain developed is more for the composite with 0.6 wt% nanofillers which is almost 40% more than the other three. Indicates composite with 0.6 wt% nanofillers establishes better bonding between the matrix elements which allow it to undergo more elongation without failure.…”

Section: Inter-laminar Shear Strengthmentioning

confidence: 87%

“…The results obtained shows good agreement with literature. [29,30,46] Addition of F I G U R E 1 6 Scanning electron microscopy images of the worn surface of the composite filled with A, 0 wt%; B, 0.2 wt%; C, 0.4 wt%; D, 0.6 wt%; E, 1.2 wt%; F, 1.8 wt%; G, 2.4 wt%; H, 3 wt% nanofillers. Note: A, smooth fiber surface; F, fiber breakage; G, interfacial debonding; H, nanoparticles; I, agglomeration; K, pits; M, fiber imprints; N, debris; O, voids; P, micro cracks; Q, wear scars [Color figure can be viewed at wileyonlinelibrary.com] small amount of fillers to the matrix help to fabricate the composites with uniform thickness and improves processability, as the fillers are stiffer compare to matrix.…”

Section: Flexural Strengthmentioning

confidence: 99%

Effect of Al₂O₃ nanofillers in basalt/epoxy composites: Mechanical and tribological properties

et al. 2020

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In this research, effect of Al 2 O 3 nanofillers on mechanical, wear, and hardness characteristics of basalt/epoxy laminate composites were carried out. Composite laminates of basalt/epoxy with different percentage of Al 2 O 3 nano fillers were manufactured by Hand layup method. Mechanical Properties which includes tensile strength, inter laminar shear strength (ILSS), flexural strength, impact strength, and hardness were investigated as per ASTM standards. Wear tests were carried out for different loads with different sliding velocities keeping sliding distance constant. It was observed that flexural strength and ILSS increases for small percentage of nanofillers, whereas tensile strength deteriorates with increase in percentage of fillers and hardness increases with increase in percentage of fillers. The wear results indicates, the addition of Al 2 O 3 nanofillers significantly reduces the wear loss of basalt/epoxy composites. Fractured and worn surfaces were analyzed with scanning electron microscopy images which establishes a good agreement with the obtained results.

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Processing of Polymer‐Based Nanocomposites

Cited by 18 publications

References 56 publications

Influence of particulate surface treatment on physical, mechanical, thermal, and dielectric behavior of epoxy/hexagonal boron nitride composites

Influence of particulate surface treatment on physical, mechanical, thermal, and dielectric behavior of epoxy/hexagonal boron nitride composites

The Effects of Concentration and Particle Size of TiO₂ on the Dielectric Properties of Polyolefin‐Based Microwave Substrates

Effect of Al₂O₃ nanofillers in basalt/epoxy composites: Mechanical and tribological properties

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Processing of Polymer‐Based Nanocomposites

Cited by 18 publications

References 56 publications

Influence of particulate surface treatment on physical, mechanical, thermal, and dielectric behavior of epoxy/hexagonal boron nitride composites

Influence of particulate surface treatment on physical, mechanical, thermal, and dielectric behavior of epoxy/hexagonal boron nitride composites

The Effects of Concentration and Particle Size of TiO2 on the Dielectric Properties of Polyolefin‐Based Microwave Substrates

Effect of Al2O3 nanofillers in basalt/epoxy composites: Mechanical and tribological properties

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The Effects of Concentration and Particle Size of TiO₂ on the Dielectric Properties of Polyolefin‐Based Microwave Substrates

Effect of Al₂O₃ nanofillers in basalt/epoxy composites: Mechanical and tribological properties