Evaluation of the Effect of Different Nano-Size of WO3 Addition on the Thermal Properties of HDPE Composite

Nanoscience is primarily deals with synthesis, exploration, exploitation and of nanostructured materials. Those materials are characterized by at least one dimension in the nanometer range. Particles of “nano” size have been shown to exhibit enhanced or novel properties including reactivity, thermal properties, greater sensing capability, electrical conductivity and increased mechanical strength. These nanotechnique offers clean, simple, fast, economic, and efficient for the synthesis of a variety of organic molecules, have provided the momentum for many chemists to switch from traditional method. In this article an attempt was made to focus on what is nanomaterials, how is it generated and what all the importance it may have are and the important applications.

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Effect of micro and nano-size boron nitride and silicon carbide on thermal properties and partial discharge resistance of silicone elastomer composite

IEEE Transactions on Dielectrics and Electrical Insulation ◽

10.1109/tdei.2019.008355 ◽

2020 ◽

Vol 27 (2) ◽

pp. 377-385 ◽

Cited By ~ 1

Author(s):

Yalin Wang ◽

Jiandong Wu ◽

Yi Yin ◽

Tao Han

Keyword(s):

Silicon Carbide ◽

Thermal Properties ◽

Boron Nitride ◽

Partial Discharge ◽

Silicone Elastomer ◽

Nano Size

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Preparation of Aluminum Nanoparticles and Oxidation Mechanism of Nano- and Micro-Particles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.690-693.485 ◽

2013 ◽

Vol 690-693 ◽

pp. 485-489 ◽

Cited By ~ 1

Author(s):

Liang Chen ◽

Lei Liu ◽

Zhen Li ◽

Cheng Jing Xiao ◽

Tao Wei

Keyword(s):

Thermal Properties ◽

Oxidation Behavior ◽

Oxidation Mechanism ◽

Aluminum Nanoparticles ◽

X Ray Diffraction ◽

X Ray ◽

Micro Particles ◽

Thermal Analyzer ◽

Nano Size ◽

Simultaneous Thermal Analyzer

Aluminum nanoparticles were prepared by laser and inducting heating methods, then the phase, structure and thermal properties of them were characterized by X-ray diffraction, electron microscope and simultaneous thermal analyzer, respectively. The results showed that there was great difference between micro- and nanoparticles in oxidation behavior. Aluminum micron particles had a very strong endothermic peak at the temperature of about 660°C and the absorption heat enthalpy is 328J/g.The release heat enthalpies of aluminum nanoparticles oxidized by oxygen are 4.219 kJ/g and 3.584 kJ/g. Because of the size decreases to nano-size, the aluminum nanoparticles can be oxidized directly by oxygen and release a large amount of heat, which is beneficial to the propellants when it been burn. However, the micro-particles should absorb heat which other components released, and release heat slowly after melted, which are not as good as the nano-ones.

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TEM investigations of surface residual stress relaxation in A12O3 and Al2O3-SiC nanocomposite

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100170876 ◽

1994 ◽

Vol 52 ◽

pp. 628-629

Author(s):

J. Fang ◽

H. M. Chan ◽

M. P. Harmer

Keyword(s):

Residual Stress ◽

Single Phase ◽

Stress Relief ◽

Stress Recovery ◽

Surface Residual Stress ◽

Microscopic Mechanism ◽

Sic Particles ◽

Annealing Procedure ◽

The Difference ◽

Nano Size

It was Niihara et al. who first discovered that the fracture strength of Al2O3 can be increased by incorporating as little as 5 vol.% of nano-size SiC particles (>1000 MPa), and that the strength would be improved further by a simple annealing procedure (>1500 MPa). This discovery has stimulated intense interest on Al2O3/SiC nanocomposites. Recent indentation studies by Fang et al. have shown that residual stress relief was more difficult in the nanocomposite than in pure Al2O3. In the present work, TEM was employed to investigate the microscopic mechanism(s) for the difference in the residual stress recovery in these two materials.Bulk samples of hot-pressed single phase Al2O3, and Al2O3 containing 5 vol.% 0.15 μm SiC particles were simultaneously polished with 15 μm diamond compound. Each sample was cut into two pieces, one of which was subsequently annealed at 1300° for 2 hours in flowing argon. Disks of 3 mm in diameter were cut from bulk samples.

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