Elasticity, mechanical and thermal properties of submicron h-AlN: in-situ high pressure ultrasonic study

2021 ◽  
Author(s):  
Qingze Li ◽  
Xiuxiu Yang ◽  
Fang Peng ◽  
Gongzhang Yang ◽  
Tiexin Han ◽  
...  
Keyword(s):  
High Pressure ◽  
Thermal Properties ◽  
Mechanical And Thermal Properties ◽  
Ultrasonic Study

scholarly journals 3C-SiC Nanowires In-Situ Modified Carbon/Carbon Composites and Their Effect on Mechanical and Thermal Properties

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 894 ◽  
Author(s):  
Hongjiao Lin ◽  
Hejun Li ◽  
Qingliang Shen ◽  
Xiaohong Shi ◽  
Tao Feng ◽  
...  
Keyword(s):  
Shear Strength ◽  
Thermal Properties ◽  
Sol Gel ◽  
Interlaminar Shear Strength ◽  
Mechanical And Thermal Properties ◽  
Initial Oxidation ◽  
Sic Nanowires ◽  
Out Of Plane ◽  
Interlaminar Shear

An in-situ, catalyst-free method for synthesizing 3C-SiC ceramic nanowires (SiCNWs) inside carbon–carbon (C/C) composites was successfully achieved. Obtained samples in different stages were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman scattering spectroscopy. Results demonstrated that the combination of sol-gel impregnation and carbothermal reduction was an efficient method for in-situ SiCNW synthesis, inside C/C composites. Thermal properties and mechanical behaviors—including out-of-plane and in-plane compressive strengths, as well as interlaminar shear strength (ILLS) of SiCNW modified C/C composites—were investigated. By introducing SiCNWs, the initial oxidation temperature of C/C was increased remarkably. Meanwhile, out-of-plane and in-plane compressive strengths, as well as interlaminar shear strength (ILLS) of C/C composites were increased by 249.3%, 109.2%, and 190.0%, respectively. This significant improvement resulted from simultaneous reinforcement between the fiber/matrix (F/M) and matrix/matrix (M/M) interfaces, based on analysis of the fracture mechanism.

Microstructure, mechanical, and thermal properties of in situ-synthesized (ZrB2+SiC)/Zr2[Al(Si)]4C5 composites

2013 ◽  
Vol 39 (7) ◽  
pp. 8559-8563 ◽  
Author(s):  
D.D. Guo ◽  
J. Yang ◽  
L. Yu ◽  
L.M. Pan ◽  
T. Qiu ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties

In-situ probing the electrical, mechanical, and thermal properties of individual carbon nanotubes and nanowires by using a TEM-SPM platform

2008 ◽  
Vol 14 (S2) ◽  
pp. 398-399
Author(s):  
J-Y Huang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
New Mexico ◽  
Mechanical And Thermal Properties

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

scholarly journals Investigation on the modification to solvent-containing two-component polyurethane coating by carbon nanotubes

2015 ◽  
Vol 44 (5) ◽  
pp. 300-305 ◽  
Author(s):  
X. Jiang ◽  
L. Lin ◽  
X. Bai ◽  
S. Wang ◽  
C. Wang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Composite Coating ◽  
Acid Treatment ◽  
Mechanical And Thermal Properties ◽  
Colour Properties ◽  
Content Type ◽  
Two Component ◽  
Appearance Properties

Purpose – The purpose of this paper is to investigate the effects of carbon nanotubes (CNTs) on the mechanical, thermal and colour properties of solvent-containing two-component polyurethane (PU) coating. Design/methodology/approach – Fourier transform infrared spectroscopy and observation of dispersion stability were used to assess the effects of acid treatment on CNTs. The CNTs and PU composite coating was synthesised by in situ polymerisation and bending polymerisation, and the mechanical, thermal and colour appearance properties of coating were characterised. Findings – It was found that desirable modifications to CNTs occurred after acid treatment; thus, mainly carboxylic acid groups were introduced onto the surface of CNTs. And the acid-treated CNTs could improve the mechanical and thermal properties of PU coating, and the properties of composite coating was improved more successfully by in situ polymerisation than by blending polymerisation. Practical implications – The investigation established a method to synthesise CNTs and PU composite coating. The mechanical and thermal properties of PU coating could be improved by the inclusion of CNTs. Originality/value – This study established a method to synthesise CNTs and PU composite coating by in situ polymerisation and blending polymerisation; the effects of CNTs on modifying mechanical, thermal and colour properties of PU coating were investigated and compared in detail.

Structural, Mechanical, and Thermal Properties of β-Si3N4 under High Pressure

2016 ◽  
Vol 46 (4) ◽  
pp. 393-398 ◽  
Author(s):  
H. J. Hou ◽  
H. J. Zhu ◽  
C. W. Lao ◽  
S. P. Li ◽  
H. Guan ◽  
...  
Keyword(s):  
High Pressure ◽  
Thermal Properties ◽  
Mechanical And Thermal Properties

Mechanical and thermal properties of hybrid nanocomposites prepared by in situ polymerization

Polimery ◽  
2016 ◽  
Vol 61 (03) ◽  
pp. 172-180 ◽  
Author(s):  
Sandra Paszkiewicz ◽  
Iwona Pawelec ◽  
Anna Szymczyk ◽  
Zbigniew Roslaniec
Keyword(s):  
Thermal Properties ◽  
In Situ Polymerization ◽  
Hybrid Nanocomposites ◽  
Mechanical And Thermal Properties

scholarly journals Dielectric, mechanical and thermal properties of all-organic PI/PSF composite films by in situ polymerization

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 226-232 ◽  
Author(s):  
Peng Li ◽  
Jiajun Yu ◽  
Shaohua Jiang ◽  
Hong Fang ◽  
Kunming Liu ◽  
...  
Keyword(s):  
Thermal Properties ◽  
In Situ Polymerization ◽  
Composite Films ◽  
Dielectric Materials ◽  
Mechanical Analysis ◽  
Dielectric Measurement ◽  
Mechanical And Thermal Properties ◽  
High Dielectric Materials ◽  
High Dielectric

AbstractAll-organic high dielectric materials are highly required in the field of modern electronic industry and energy storage. In this work, all-organic polyimide/polysulfone composite films with different amounts of PSF (PI/PSF-X) were prepared by in situ polymerization followed by film casting and thermal treatment. The dielectric, mechanical and thermal properties of these PI/PSF-X composite films are characterized by dielectric measurement, tensile test, thermogravimetric analysis and dynamic mechanical analysis. The results suggest that the PI/PSF-X composite films have good dielectric properties, good mechanical properties and excellent thermal properties, which are suitable for applications in electronic devices in harsh environments, especially in high-temperature environments.

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