Improvement of Mechanical and Physical Property of Polypropylene Nano Composites by the Addition of Multi-walled Carbon Nano Tube

In current study, two kinds of nano-composites were prepared and the effect of input parameters on impact properties of desired hybrid nano-composites was investigated. Carbon fiber orientation, nano-clay content, and carbon nano-tube content were selected as input parameters in one set and carbon fiber orientation, nano-clay content, and nano-SiO2 content were the input parameters of the other set of prepared nano-composites. Taguchi design was used for design of experiments and analyzing results. The obtained results show that the maximum value of impact strength for both of nano-composites occurred in the design level 2 with 0 degree of fiber orientation, 1.5 wt% of nano-clay, 1 wt% of nano-SiO2, and 1 wt% of carbon nano-tube and the magnitude of impact strength for nano-clay/carbon nano-tube and nano-clay/nano-SiO2 was 6.6 kJ/m2 and 6.3 kJ/m2, respectively. From analysis of variance, it was clear that all of the input variables had reverse effect on impact response except the nano-clay. The carbon fiber orientation had the greatest effect and the effect of carbon nano-tube was higher than nano-SiO2 according to its probability value. Also mechanical plots show that, the optimum level of input variables of hybrid nano-composites reached higher values of impact strength compared with pure epoxy and binary nano-composites.

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Research on Effective Properties of Hybrid Nano Composites

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.l1018.10812s219 ◽

2019 ◽

Vol 8 (12S2) ◽

Cited By ~ 1

Keyword(s):

Piezoelectric Properties ◽

Effective Properties ◽

Hybrid Composites ◽

Nano Composites ◽

Smart Composite ◽

Smart Composites ◽

Different Types ◽

Different Diameters ◽

Carbon Nano Tube

Carbon nano tube fiber reinforced hybrid smart composites are often used in many engineering applications due to their high specific mechanical properties. This paper is concerned with the investigation of effective elastic and piezoelectric properties of hybrid smart nano composites. For this purpose, a hybrid smart composite reinforced with carbon nanotubes (CNTs) and piezoelectric fibers is proposed. The effective properties for the proposed composite are estimated analytically by using Mori Tanaka method. The different diameters of CNTs were taken for the analysis purpose. The effect of CNT diameters on the volume fractions of piezoelectric fibers for the proposed composite is examined. The results clearly highlight the benefits of using different types of CNTs. It is found that the change in diameter can play a significant role in the determination of effective properties of CNT reinforced hybrid composites

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Exploration of Special Properties of AL 5056/CNT Metal Matrix Nano-Composites

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b1965.078219 ◽

2019 ◽

Vol 8 (2) ◽

pp. 2829-2833

Keyword(s):

Electrical Conductivity ◽

Metal Matrix ◽

Base Material ◽

Stir Casting ◽

Sem Analysis ◽

Corrosion And Wear ◽

Nano Composites ◽

Matrix Composites ◽

Casting Technique ◽

Carbon Nano Tube

Over the two decades, researchers and manufacturers of automotive and aerospace appliances have paid much attention and interest to metal matric composites (MMC) due to their unique properties. This paper focus on the special characteristics of Metal Matrix Composites of Aluminum Al5056 reinforced with Carbon Nano Tube (CNT) in different weight ratios of 0.4%, 0.7% and 1.1% of base material. Stir-casting technique is utilized to prepare the composites in line with ASTM standards. The specimens are tested for electrical conductivity, corrosion and wear features. Further the internal structure of these composites is studied by using the SEM Analysis. It is found from the results that by adding reinforcement the composites are affected and SEM analysis of AMMNCs reveal a uniform distribution of CNT in the alloy of Aluminum.

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Scanning tunneling microscopy and atomic force microscopy: New tools for biology

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100155864 ◽

1989 ◽

Vol 47 ◽

pp. 778-779

Author(s):

CE Bracker ◽

P. K. Hansma

Keyword(s):

Physical Property ◽

Scanning Probe ◽

Scanning Tunneling ◽

Small Scale ◽

Tunneling Microscopy ◽

Force Microscopy ◽

New Family ◽

Small Probe ◽

Atomic Force ◽

Transmission Electron

A new family of scanning probe microscopes has emerged that is opening new horizons for investigating the fine structure of matter. The earliest and best known of these instruments is the scanning tunneling microscope (STM). First published in 1982, the STM earned the 1986 Nobel Prize in Physics for two of its inventors, G. Binnig and H. Rohrer. They shared the prize with E. Ruska for his work that had led to the development of the transmission electron microscope half a century earlier. It seems appropriate that the award embodied this particular blend of the old and the new because it demonstrated to the world a long overdue respect for the enormous contributions electron microscopy has made to the understanding of matter, and at the same time it signalled the dawn of a new age in microscopy. What we are seeing is a revolution in microscopy and a redefinition of the concept of a microscope.Several kinds of scanning probe microscopes now exist, and the number is increasing. What they share in common is a small probe that is scanned over the surface of a specimen and measures a physical property on a very small scale, at or near the surface. Scanning probes can measure temperature, magnetic fields, tunneling currents, voltage, force, and ion currents, among others.

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A photoelectron microscope study of surfaces

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100152021 ◽

1989 ◽

Vol 47 ◽

pp. 10-11

Author(s):

W. Engel ◽

M. Kordesch ◽

A. M. Bradshaw ◽

E. Zeitler

Keyword(s):

Electron Microscopy ◽

High Pressure ◽

Field Strength ◽

Uv Light ◽

Physical Property ◽

Photon Flux ◽

Mercury Lamp ◽

Object Surface ◽

The Sixties ◽

Physical Features

Photoelectron microscopy is as old as electron microscopy itself. Electrons liberated from the object surface by photons are utilized to form an image that is a map of the object's emissivity. This physical property is a function of many parameters, some depending on the physical features of the objects and others on the conditions of the instrument rendering the image.The electron-optical situation is tricky, since the lateral resolution increases with the electric field strength at the object's surface. This, in turn, leads to small distances between the electrodes, restricting the photon flux that should be high for the sake of resolution.The electron-optical development came to fruition in the sixties. Figure 1a shows a typical photoelectron image of a polycrystalline tantalum sample irradiated by the UV light of a high-pressure mercury lamp.

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TEM observation of iron oxide pillars in montmorillonite

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100177544 ◽

1990 ◽

Vol 48 (4) ◽

pp. 882-883

Author(s):

H. Mori ◽

Y. Murata ◽

H. Yoneyama ◽

H. Fujita

Keyword(s):

Aqueous Solution ◽

Iron Oxide ◽

Fine Particles ◽

Aqueous Suspension ◽

Volume Ratio ◽

Exchange Capacity ◽

Nano Composites ◽

Pillared Montmorillonite ◽

Topographic Features ◽

Transmission Electron

Recently, a new sort of nano-composites has been prepared by incorporating such fine particles as metal oxide microcrystallites and organic polymers into the interlayer space of montmorillonite. Owing to their extremely large specific surface area, the nano-composites are finding wide application[1∼3]. However, the topographic features of the microstructures have not been elucidated as yet In the present work, the microstructures of iron oxide-pillared montmorillonite have been investigated by high-resolution transmission electron microscopy.Iron oxide-pillared montmorillonite was prepared through the procedure essentially the same as that reported by Yamanaka et al. Firstly, 0.125 M aqueous solution of trinuclear acetato-hydroxo iron(III) nitrate, [Fe3(OCOCH3)7 OH.2H2O]NO3, was prepared and then the solution was mixed with an aqueous suspension of 1 wt% clay by continuously stirring at 308 K. The final volume ratio of the latter aqueous solution to the former was 0.4. The clay used was sodium montmorillonite (Kunimine Industrial Co.), having a cation exchange capacity of 100 mequiv/100g. The montmorillonite in the mixed suspension was then centrifuged, followed by washing with deionized water. The washed samples were spread on glass plates, air dried, and then annealed at 673 K for 72 ks in air. The resultant film products were approximately 20 μm in thickness and brown in color.

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Investigating the Multimodal Nature of Human Communication

Journal of Psychophysiology ◽

10.1027/0269-8803.23.2.63 ◽

2009 ◽

Vol 23 (2) ◽

pp. 63-76 ◽

Cited By ~ 41

Author(s):

Silke Paulmann ◽

Sarah Jessen ◽

Sonja A. Kotz

Keyword(s):

Visual Information ◽

Empirical Studies ◽

Physical Property ◽

Event Related Potentials ◽

Accurate Information ◽

Human Communication ◽

Channel Condition ◽

Prosodic Cues ◽

Early Processing ◽

Related Potentials

The multimodal nature of human communication has been well established. Yet few empirical studies have systematically examined the widely held belief that this form of perception is facilitated in comparison to unimodal or bimodal perception. In the current experiment we first explored the processing of unimodally presented facial expressions. Furthermore, auditory (prosodic and/or lexical-semantic) information was presented together with the visual information to investigate the processing of bimodal (facial and prosodic cues) and multimodal (facial, lexic, and prosodic cues) human communication. Participants engaged in an identity identification task, while event-related potentials (ERPs) were being recorded to examine early processing mechanisms as reflected in the P200 and N300 component. While the former component has repeatedly been linked to physical property stimulus processing, the latter has been linked to more evaluative “meaning-related” processing. A direct relationship between P200 and N300 amplitude and the number of information channels present was found. The multimodal-channel condition elicited the smallest amplitude in the P200 and N300 components, followed by an increased amplitude in each component for the bimodal-channel condition. The largest amplitude was observed for the unimodal condition. These data suggest that multimodal information induces clear facilitation in comparison to unimodal or bimodal information. The advantage of multimodal perception as reflected in the P200 and N300 components may thus reflect one of the mechanisms allowing for fast and accurate information processing in human communication.

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