Fabrication of conjugated polymer/carbon nano-tube composite materials for capacitors

2018 ◽  
Vol 6 (3) ◽  
pp. 036302 ◽  
Author(s):  
Chunqing Li ◽  
Xinjian Cheng ◽  
Lamei Wu
Nano Hybrids ◽  
2016 ◽  
Vol 10 ◽  
pp. 14-19 ◽  
Author(s):  
S. Nallusamy

Now a days composite material plays an important role in many industrial applications due to their excellent mechanical properties. Presently researchers are making composite materials using various filler materials to characterize the wear behavior of the composite which is used as a machine component in various industrial applications and in machine house hold articles for daily use to highly sophisticated applications. This is due to the proven fact that composite materials acquire higher strength to weight ratio. In this investigation Nano composites of E-Glass fiber/Multi walled carbon nano tube were prepared by the technique of hand layup. The glass fiber used for current investigation is E-glass fiber bi-directional of 45 degree orientation. The composite material samples were prepared in the form of a plate with a thickness of 4 mm. The fabricated composite materials were cut into analogous profiles as per ASTM for tensile and flexural testing analysis. This investigation reveals that the growth of Multi Walled Carbon Nano Tube (MWCNT) particles improves considerably the mechanical properties even if the fabrication is done by manual method like the technique of hand layup.


Author(s):  
Nandini MC

Abstract: In Recent days, the natural fibres from renewable natural resources offer the potential to act as a reinforcing material for polymer composites alternative to the use of glass, carbon and other man-made fibres. Among various fibres, Hemp is most widely used natural fibre due to its advantages like easy availability, low density, low production cost and satisfactory mechanical properties. Composite materials play a vital role in the field of materials to meet the stringent demands of light weight, high strength, corrosion resistance and near-net shapes. Composite is a structural material that consists of two or more combined constituents that are combined at a macroscopic level and are not soluble in each other. Composites are having two phases that are reinforcing phase like fiber, particle, or flakes & matrix phase like polymers, metals, and ceramics. In this project an attempt is made to prepare different combination of composite materials using hemp/carbon fiber and Carbon nano tube reinforcement and vinyl ester as the matrix material respectively. Composites were prepared according to ASTM standards and following test are carried out Tensile, Flexural and ILSS test. The effect of addition of Carbon nano tubes in hemp/vinyl ester/carbon fibers has been studied & it has been observed that there is a significant effect of fibre loading and performance of hemp/carbon fiber reinforced vinyl ester based hybrid composites with improved results Keywords: Hemp fiber, Vinyl ester, Carbon fiber, Tensile, Flexural and ILSS Test


Author(s):  
Nandini MC ◽  
Dr. Shivarudraiah ◽  
Dr. H K Shivanand ◽  
Puneeth P

In Recent days, the natural fibres from renewable natural resources offer the potential to act as a reinforcing material for polymer composites alternative to the use of glass, carbon and other man-made fibres. Among various fibres, Hemp is most widely used natural fibre due to its advantages like easy availability, low density, low production cost and satisfactory mechanical properties. Composite materials play a vital role in the field of materials to meet the stringent demands of light weight, high strength, corrosion resistance and near-net shapes. Composite is a structural material that consists of two or more combined constituents that are combined at a macroscopic level and are not soluble in each other. Composites are having two phases that are reinforcing phase like fiber, particle, or flakes & matrix phase like polymers, metals, and ceramics. In this project an attempt is made to prepare different combination of composite materials using hemp/carbon fiber and Carbon nano tube reinforcement and vinyl ester as the matrix material respectively. Composites were prepared according to ASTM standards and following test are carried out Density test, Water absorption test and Impact test. The effect of addition of Carbon nano tubes in hemp/vinyl ester/carbon fibers has been studied & it has been observed that there is a significant effect of fibre loading and performance of hemp/carbon fiber reinforced vinyl ester based hybrid composites with improved results.


Author(s):  
Sergey V. Panin ◽  
Lyudmila A. Kornienko ◽  
Vladislav O. Aleksenko ◽  
Larisa R. Ivanova ◽  
Sergey V. Shilko ◽  
...  

The mechanical and tribo-technical parameters of composite materials of mixtures on the bases of super- molecular polyethylene (SMPE) at conditions of dry friction and abrasive wear were studied for comparative estimation of solid- grease properties of nano and micro fibers of carbon. It was shown that wear resistance of polymer compositions of SMPE+0.5 weight% the percent of C(nano) increases by a factor 6.6 and for  SMPE+5 weight% the percent of C(micro) increases by a factor 2.5 at conditions of dry friction of slip. At conditions of abrasive wear the resistance of composites mentioned above increases by a factor about 2 for both types of fillers. The role of nano and micro fibers of carbon is discussed as solid grease in tribo- conjugated polymer compositions based on SMPE for application at various conditions of operation.


Author(s):  
R.R. Russell

Transmission electron microscopy of metallic/intermetallic composite materials is most challenging since the microscopist typically has great difficulty preparing specimens with uniform electron thin areas in adjacent phases. The application of ion milling for thinning foils from such materials has been quite effective. Although composite specimens prepared by ion milling have yielded much microstructural information, this technique has some inherent drawbacks such as the possible generation of ion damage near sample surfaces.


Author(s):  
K.P.D. Lagerlof

Although most materials contain more than one phase, and thus are multiphase materials, the definition of composite materials is commonly used to describe those materials containing more than one phase deliberately added to obtain certain desired physical properties. Composite materials are often classified according to their application, i.e. structural composites and electronic composites, but may also be classified according to the type of compounds making up the composite, i.e. metal/ceramic, ceramic/ceramie and metal/semiconductor composites. For structural composites it is also common to refer to the type of structural reinforcement; whisker-reinforced, fiber-reinforced, or particulate reinforced composites [1-4].For all types of composite materials, it is of fundamental importance to understand the relationship between the microstructure and the observed physical properties, and it is therefore vital to properly characterize the microstructure. The interfaces separating the different phases comprising the composite are of particular interest to understand. In structural composites the interface is often the weakest part, where fracture will nucleate, and in electronic composites structural defects at or near the interface will affect the critical electronic properties.


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