Mechanical and Thermal Properties of Advanced Oxide Materials for Higher-Temperature Coatings Applications

2008 ◽  
pp. 11-19 ◽  
Author(s):  
Sung R. Choi ◽  
Narottam P. Bansal ◽  
Dongming Zhu
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties ◽  
Oxide Materials ◽  
Higher Temperature

scholarly journals Elastomers based on NR/BR/SBR ternary rubber blend: Morphological, mechanical and thermal properties

2019 ◽  
Vol 25 (1) ◽  
pp. 31-38
Author(s):  
Slavisa Jovanovic ◽  
Vojislav Jovanovic ◽  
Gordana Markovic ◽  
Suzana Samarzija-Jovanovic ◽  
Zoran Milicevic ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Decomposition Temperature ◽  
Mechanical And Thermal Properties ◽  
Rubber Blends ◽  
Rubber Blend ◽  
Before And After ◽  
Elastomeric Materials ◽  
Higher Temperature ◽  
Mechanical Tensile ◽  
Styrene Butadiene

The elastomeric materials based on NR/BR/SBR ternary rubber blend were investigated. The polyisoprene (NR), butadiene (BR) and styrene butadiene (SBR) rubbers were used as network precursors and carbon black (CB) as an active filler (60 phr) for elastomeric materials preparation. For sample preparation, the mass ratio of NR to BR was constant, 1:1, but the SBR content was varied from 0 to 80 phr. The morphological, mechanical and thermal properties of prepared elastomeric materials were determined using scanning electron microscopy (SEM), mechanical tensile measurements and thermogravimetric analysis (TGA). Mechanical properties were assessed before and after thermooxidative aging during 168 h at 100 ?C. The values of tensile strength, elongation at break, and hardness decrease up to 40 phr of SBR content and after that are increasing, but abrasion resistance of ternary rubber blends increases. ?he thermal decomposition temperature obviously shifted to a higher temperature for the sample with 40 phr of SBR.

Influence of Carbon Nanotubes on Mechanical and Thermal Properties of Glass Fiber Reinforced Vinyl Ester Resin Composites

2011 ◽  
Vol 675-677 ◽  
pp. 419-422 ◽  
Author(s):  
Hong Yan Chen ◽  
Zhen Xing Kong ◽  
Ji Hui Wang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Glass Fiber ◽  
Vinyl Ester ◽  
Decomposition Temperature ◽  
Mechanical And Thermal Properties ◽  
Glass Fiber Reinforced ◽  
The Matrix ◽  
Higher Temperature ◽  
Interlaminar Shear

Carbon nanotubes (CNTs) were incorporated into glass fiber/ vinyl ester resins composites to improve their mechanical and thermal properties, especially the interlaminar shear and longitudinal compressive strengths which are belong to the matrix-dominanted properties and much weaker than the fiber-dominated properties. In this study, a higher temperature initiator was added to improve the polymerization degree and raise the transition temperature (Tg). Mechanical testing indicated that by adding 0.4 wt% CNTs, the nano-filled composites attributed to 21%, 16%, 10%, and 8% improvement in interlaminar shear strength, compressive strength, tensile strength and flexural strength with respect to their counterparts without CNTs, respectively. Moreover, Thermogravimetric analysis (TGA) also exhibits approximately 14°C higher decomposition temperature than those of conventional composites.

Prediction on structural, mechanical and thermal properties of Al4SiC4, Al4C3 and 4H-SiC under high pressure by first-principles calculation

2017 ◽  
Vol 31 (09) ◽  
pp. 1750080 ◽  
Author(s):  
Liang Sun ◽  
Yimin Gao ◽  
Katsumi Yoshida ◽  
Toyohiko Yano ◽  
Wen Wang
Keyword(s):  
Thermal Properties ◽  
First Principles ◽  
Elastic Moduli ◽  
Theoretical Study ◽  
Lattice Parameter ◽  
First Principles Calculation ◽  
Mechanical And Thermal Properties ◽  
Text Data ◽  
Cell Structures ◽  
Higher Temperature

A theoretical study is conducted by first-principles theory to study the structural, electronic, elastic and thermal properties of Al4SiC4, Al4C3 and 4H-SiC phases under pressure. The calculated results indicated that the volumetric shrinkage of Al4SiC4 declines to 16% compared with 4H-SiC for 12% and its length of lattice parameter along c-axis decreases faster than that of along other axes in cell structures. The mechanical properties of Al4SiC4 like elastic constants and elastic moduli increase continuously under pressure. The thermal expansion coefficient of three compounds under pressure are studied first. When temperature is lower than 500 K, the coefficient increases rapidly first then gradually tends to a linear accession at higher temperature and the propensity of increment becomes moderate. The [Formula: see text] data decreases slightly with pressure but increases dramatically with temperature for all compounds.

Mechanical and thermal characterization of grafted PP-NCC nanocomposites

2019 ◽  
pp. 089270571987822
Author(s):  
Saud Aldajah ◽  
Mohammad Y Al-Haik ◽  
Waseem Siddique ◽  
Mohammad M Kabir ◽  
Yousef Haik
Keyword(s):  
Thermal Properties ◽  
Interfacial Adhesion ◽  
Thermal Characterization ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Three Point Bending ◽  
Twin Screw ◽  
Thermal Stability Of

This study reveals the enhancement of mechanical and thermal properties of maleic anhydride-grafted polypropylene (PP- g-MA) with the addition of nanocrystalline cellulose (NCC). A nanocomposite was manufactured by blending various percentages of PP, MA, and NCC nanoparticles by means of a twin-screw extruder. The influence of varying the percentages of NCC on the mechanical and thermal behavior of the nanocomposite was studied by performing three-point bending, nanoindentation, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy tests. The novelty of this study stems on the NCC nanoparticles and their ability to enhance the mechanical and thermal properties of PP. Three-point bending and nanoindentation tests revealed improvement in the mechanical properties in terms of strength, modulus, and hardness of the PP- g-MA nanocomposites as the addition of NCC increased. SEM showed homogeneity between the mixtures which proved the presence of interfacial adhesion between the PP- g-MA incorporated with NCC nanoparticles that was confirmed by the FTIR results. DSC and TGA measurements showed that the thermal stability of the nanocomposites was not compromised due to the addition of the coupling agent and reinforced nanoparticles.

Ta addition effects on the structure, mechanical and thermal properties of sputtered Hf-Ta-C film

2019 ◽  
Vol 45 (12) ◽  
pp. 15596-15602 ◽  
Author(s):  
Xinlei Gu ◽  
Lina Yang ◽  
Xiaorong Ma ◽  
Xuan Dai ◽  
Jia Wang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties
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