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Online since: May 2020
Authors: A.R. Maskova, G.U. Yarmuhametova, Yu.N. Savicheva
About Communication of the Comparative Properties Plasticized PVC Compositions and Quantities of Additives Used
A.R.
These indexes significantly affect a number of physicomechanical properties of composition on the basis of PVC.
The hardness of the above-stated composition is higher, the wear resistance of products on its basis and other mechanical characteristics of a surface is better.
Replacement of DOF by DOOEF was made taking into account the factor of replacement defined earlier [20-26].
Parameters of multifactorial regression model Properties Model parameters Rated coefficient of correlation R2 Calculated value of criterion of Fischer Fcalc Tabular value of criterion of Fischer *Ftab Standard mistake Shore A hardness 1,7025 -5,1067 -0,2774 0,75 1038,85 19,16 2,54 MFR 0,6036 0,9482 0,1366 0,75 4347,44 0,90 * at a significance level 0,05 According to these tab. 2, the rated coefficient of correlation R2 more than 0.7 that testifies to close connection between the studied factors (content of additives) and the end result (physicomechanical properties).
These indexes significantly affect a number of physicomechanical properties of composition on the basis of PVC.
The hardness of the above-stated composition is higher, the wear resistance of products on its basis and other mechanical characteristics of a surface is better.
Replacement of DOF by DOOEF was made taking into account the factor of replacement defined earlier [20-26].
Parameters of multifactorial regression model Properties Model parameters Rated coefficient of correlation R2 Calculated value of criterion of Fischer Fcalc Tabular value of criterion of Fischer *Ftab Standard mistake Shore A hardness 1,7025 -5,1067 -0,2774 0,75 1038,85 19,16 2,54 MFR 0,6036 0,9482 0,1366 0,75 4347,44 0,90 * at a significance level 0,05 According to these tab. 2, the rated coefficient of correlation R2 more than 0.7 that testifies to close connection between the studied factors (content of additives) and the end result (physicomechanical properties).
Online since: May 2007
Authors: En Gang Wang, Qiang Wang, Chun Jiang Wang, Ji Cheng He, Hai Tao Zhang
In the present study, the influencing factors such as the intensity and the direction of
gradient magnetic fields, the magnetic susceptibilities of non-magnetic metals on the structures are
studied theoretically and experimentally.
The results indicate that high magnetic fields can be applied to control the solidified structures of metals and then improve the quality and the properties of materials for different purposes.
Introduction Solidified structures have decisive effects on the internal qualities and the mechanical properties of metals.
Therefore, in order to explain these experimental results, it needs to multi-analyze the factors such as the magnetic flux density, magnetic gradient and also convection flow.
The results indicate that high magnetic fields can be applied to control the solidified structures of metals in solidification processes and then increase the quality and the properties of materials for different purposes.
The results indicate that high magnetic fields can be applied to control the solidified structures of metals and then improve the quality and the properties of materials for different purposes.
Introduction Solidified structures have decisive effects on the internal qualities and the mechanical properties of metals.
Therefore, in order to explain these experimental results, it needs to multi-analyze the factors such as the magnetic flux density, magnetic gradient and also convection flow.
The results indicate that high magnetic fields can be applied to control the solidified structures of metals in solidification processes and then increase the quality and the properties of materials for different purposes.
Online since: May 2022
Authors: Joaquín H. Aquino Rocha, Fernando Palacios Galarza
Additionally, CFT columns possess high fire resistance properties [1].
Experimentally obtained Material properties.
Mechanical properties of the concrete were then obtained through Uniaxial compressive tests.
Table 3 Details the experimental properties obtained from the tests.
[18] Chinese Standard, GB/T 50081-2002, Standard for test method of mechanical properties on ordinary concrete, 2002
Experimentally obtained Material properties.
Mechanical properties of the concrete were then obtained through Uniaxial compressive tests.
Table 3 Details the experimental properties obtained from the tests.
[18] Chinese Standard, GB/T 50081-2002, Standard for test method of mechanical properties on ordinary concrete, 2002
Online since: July 2020
Authors: Sonny Irawan, Nur Amelia Mohd Isa, Siti Rohaida Shafian, Nurhazwane Abdul Fadil
The factors causing an excessive production of water or high water cut level in oilfield are channeling behind the casing, coning effect, rise of oil-water contact and breakthrough of injected water [2,3].
Thus, polymer gel system that possess good properties of water shutoff gel such as controllable gelation time is favourable.
Gelation time was recorded when the gel reaches H code which describes a slightly deformable non-flowing gel properties.
Amin, Viscoelastic properties of a high temperature cross-linked water shut-off polymeric gel, J.
You, Preformed Particle Gel for Conformance Control: Factors Affecting Its Properties and Applications, SPE Reserv.
Thus, polymer gel system that possess good properties of water shutoff gel such as controllable gelation time is favourable.
Gelation time was recorded when the gel reaches H code which describes a slightly deformable non-flowing gel properties.
Amin, Viscoelastic properties of a high temperature cross-linked water shut-off polymeric gel, J.
You, Preformed Particle Gel for Conformance Control: Factors Affecting Its Properties and Applications, SPE Reserv.
Online since: November 2025
Authors: Sen Sen Han, Qing Shi Meng, Zhe Xu Chen, Shuang Shan Li, Kang Bo Zhao, Hao Chen Yuan
Despite its promising properties, AnNS remain relatively underexplored for TE applications.
Graphene and its derivatives have shown significant potential for TE applications due to their excellent transport properties and high-power factors.
In contrast, graphene, a two-dimensional material, is renowned for its exceptional electrical conductivity, mechanical flexibility, and adaptive thermal properties, positioning it as a promising candidate for actively enhancing thermoelectric efficiency.
The optimized technique effectively separated the GNP layers without introducing significant defects, tears, or damage that could compromise their electrical or mechanical properties.
AFM micrograph of (a) GNPs and (b) AnNS 3.2 Morphology of composites GNPs were incorporated into the composites to improve electrical conductivity within the matrix, without adversely affecting the Seebeck coefficient.
Graphene and its derivatives have shown significant potential for TE applications due to their excellent transport properties and high-power factors.
In contrast, graphene, a two-dimensional material, is renowned for its exceptional electrical conductivity, mechanical flexibility, and adaptive thermal properties, positioning it as a promising candidate for actively enhancing thermoelectric efficiency.
The optimized technique effectively separated the GNP layers without introducing significant defects, tears, or damage that could compromise their electrical or mechanical properties.
AFM micrograph of (a) GNPs and (b) AnNS 3.2 Morphology of composites GNPs were incorporated into the composites to improve electrical conductivity within the matrix, without adversely affecting the Seebeck coefficient.
Online since: March 2016
Authors: Ismayadi Ismail, Mansor Hashim, Eydar Tey
The prepared nanocomposite coatings were subjected to different tests to characterize their surface morphology, crystalline structure and mechanical properties.
The hardness and wear resistance tests were carried out on nanocomposite coating samples to investigate the mechanical properties.
The aim of this paper is report the increase of the mechanical properties of Cu-Al2O3 and Ni-Al2O3 nanocomposites on copper substrate by electroplating method.
The properties of copper are soft and malleable.
Natter, Nanocrystalline alumina dispersed in nanocrystalline nickel:enhanced mechanical properties, J Mater Sci 44 (2009) 2725–2735 [18] H.
The hardness and wear resistance tests were carried out on nanocomposite coating samples to investigate the mechanical properties.
The aim of this paper is report the increase of the mechanical properties of Cu-Al2O3 and Ni-Al2O3 nanocomposites on copper substrate by electroplating method.
The properties of copper are soft and malleable.
Natter, Nanocrystalline alumina dispersed in nanocrystalline nickel:enhanced mechanical properties, J Mater Sci 44 (2009) 2725–2735 [18] H.
Online since: October 2007
Authors: Ping Dong, Rui Wen Li
Both of the dimension and strength were affected by the complex residual stress distribution in
the assembled tube.
Moreover, many factors may affect the welding residual stress, such as the initial stress from over fitting, a complex thermo-elastic-plastic constitutive relation and welding loading and unloading process, etc.
Because the contact boundary condition at the interface during weld process may vary with time, a coupled thermal and mechanical analysis was adopted.
The physical properties and mechanics properties of material are assumed to be temperature dependent.
For mechanical aspect, a special fixture is used for fixing one end, and the other end is constrained.
Moreover, many factors may affect the welding residual stress, such as the initial stress from over fitting, a complex thermo-elastic-plastic constitutive relation and welding loading and unloading process, etc.
Because the contact boundary condition at the interface during weld process may vary with time, a coupled thermal and mechanical analysis was adopted.
The physical properties and mechanics properties of material are assumed to be temperature dependent.
For mechanical aspect, a special fixture is used for fixing one end, and the other end is constrained.
Online since: January 2010
Authors: Dong Wang, J. Bi, Z. Zhang, Z.Y. Ma, B.L. Xiao
The strength of the NOS sample reached up to 85%
of the 2024Al alloy with the joint failing in the heat affected zone on the 2024Al side.
While the microstructural evolution during FSW was subjected to a detailed examination, no mechanical properties of the joint were reported [6].
The aim is to investigate the effect of welding conditions on the microstructure and mechanical properties of the joints.
Some pure Al (denoted by A in Fig. 1a) was observed in the bottom of the thermo-mechanically affected zone (TMAZ) on the retreating side, which was the Al-clad layer of the 2024Al aggregated on the retreating side during FSW.
This implies that some other factors affected the strength of the OS samples.
While the microstructural evolution during FSW was subjected to a detailed examination, no mechanical properties of the joint were reported [6].
The aim is to investigate the effect of welding conditions on the microstructure and mechanical properties of the joints.
Some pure Al (denoted by A in Fig. 1a) was observed in the bottom of the thermo-mechanically affected zone (TMAZ) on the retreating side, which was the Al-clad layer of the 2024Al aggregated on the retreating side during FSW.
This implies that some other factors affected the strength of the OS samples.
Online since: September 2011
Authors: Meng Hou, Jin Zou, Xue Gang Tang, Rowan Truss
Introduction
Filled polymers exhibit a diverse range of rheological properties, varying from simple viscous fluids to highly elastic solids with increasing filler volume fraction, φ [1].
Recently, much interest has focused on the development of polymer nanocomposites based on highly anisotropic inorganic nanoparticles such as layered silicates and MWCNTs due to their potential to remarkably enhance the properties of polymers [2-10].
Generally, polymer nanocomposites exhibit a stronger enhancement in the viscoelastic properties compared with microcomposites at similar filler volume fraction [2].
At low frequency, PVDF chains were fully relaxed and exhibited typical terminal behaviour with the scaling properties [28, 29].
For simplicity, we divide all the effects into two factors: 1) jamming effect from the network structures of the nanofillers. 2) non-jamming effect, which from the slowdown in relaxation of adsorbed chains, polymer-mediated transient network, and strain field distortion etc., and caused by the presence of rigid nanofillers.
Recently, much interest has focused on the development of polymer nanocomposites based on highly anisotropic inorganic nanoparticles such as layered silicates and MWCNTs due to their potential to remarkably enhance the properties of polymers [2-10].
Generally, polymer nanocomposites exhibit a stronger enhancement in the viscoelastic properties compared with microcomposites at similar filler volume fraction [2].
At low frequency, PVDF chains were fully relaxed and exhibited typical terminal behaviour with the scaling properties [28, 29].
For simplicity, we divide all the effects into two factors: 1) jamming effect from the network structures of the nanofillers. 2) non-jamming effect, which from the slowdown in relaxation of adsorbed chains, polymer-mediated transient network, and strain field distortion etc., and caused by the presence of rigid nanofillers.
Online since: December 2013
Authors: Ming Chen, Xu Can Xu, Jin Fei Liu
Masters and Evans investigated the mechanical properties of regular hexagon cell more comprehensively, and pointed out that the cell deformation is made by the combination of bending, stretching and rotation of cell walls.
However, due to some factors in the technological process, the geometry of honeycomb cells does not remain the same as its ideal shape.
On the premise of standard aluminum honeycomb, the dimensions affecting the in-plane equivalent parameters are the T/L and H/L ratios; T, L and H being respectively the thickness, the length and the height of a cell wall.
The simulation results show that the honeycomb core has strong anisotropic properties that are EXCellular solids structure and properties[D].
However, due to some factors in the technological process, the geometry of honeycomb cells does not remain the same as its ideal shape.
On the premise of standard aluminum honeycomb, the dimensions affecting the in-plane equivalent parameters are the T/L and H/L ratios; T, L and H being respectively the thickness, the length and the height of a cell wall.
The simulation results show that the honeycomb core has strong anisotropic properties that are EX