Preformed particle gels for enhanced oil recovery

2020 ◽  
Vol 34 (28) ◽  
pp. 2050260
Author(s):  
B. A. Suleimanov ◽  
E. F. Veliyev ◽  
N. V. Naghiyeva
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Polymer Matrix ◽  
Oil Recovery ◽  
Sulfonic Acid ◽  
Bentonite Clay ◽  
High Thermal Stability ◽  
Ammonium Persulphate ◽  
Hydrophilic Interactions ◽  
Preformed Particle Gels

This study refers to the synthesis of new advanced preformed particle gels (PPGs) based on 2-acrylamido-2-methylpropane sulfonic acid (AMPS), Polyvinyl Pirrolidone (PVP) and bentonite clay. For the synthesis, [Formula: see text], [Formula: see text]-methylenebisacrylamide was used as crosslinker and ammonium persulphate as initiator. As a consequence of the inclusion of clay into the polymer matrix and the intercalation of AMPS between the layers as well as the presence of hydrophilic interactions occurring between partners, the final PPGs possessed greater swelling degrees, slower de-swelling process, high thermal stability and enhanced mechanical properties in comparison with pure PPG.

scholarly journals Effects of Substitution of Y with Yb and Ce on the Microstructures and Mechanical Properties of Mg88.5Zn5Y6.5

Metals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 31
Author(s):  
Hongxin Liao ◽  
Taekyung Lee ◽  
Jiangfeng Song ◽  
Jonghyun Kim ◽  
Fusheng Pan
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Creep Resistance ◽  
Room Temperature ◽  
High Thermal Stability ◽  
Long Period ◽  
Microstructures And Mechanical Properties

The microstructures and mechanical properties of the Mg88.5Zn5Y6.5-XREX (RE = Yb and Ce, X = 0, 1.5, 3.0, and 4.5) (wt.%) alloys were investigated in the present study. Mg88.5Zn5Y6.5 is composed of three phases, namely, α-Mg, long-period stacking ordered (LPSO) phases, and intermetallic compounds. The content of the LPSO phases decreased with the addition of Ce and Yb, and no LPSO phases were detected in Mg88.5Zn5Y2.0Yb4.5. The alloys containing the LPSO phases possessed a stratified microstructure and exhibited excellent mechanical properties. Mg88.5Zn5Y5.0Ce1.5 exhibited the highest creep resistance and mechanical strength at both room temperature and 200 °C, owing to its suitable microstructure and high thermal stability. The yield strength of Mg88.5Zn5Y5.0Ce1.5 at room temperature was 358 MPa. The ultimate tensile strength of Mg88.5Zn5Y5.0Ce1.5 at room temperature and 200 °C was 453 MPa and 360 MPa, respectively.

Influence of Speed of Processing in the Mechanical and Thermomechanical Properties of Polyamide 6 / Organoclay Nanocomposite

2014 ◽  
Vol 775-776 ◽  
pp. 383-387 ◽  
Author(s):  
Renê Anísio da Paz ◽  
E.M. Araújo ◽  
L.A. Pessan ◽  
T.J.A. Melo ◽  
A.M.D. Leite ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Volume Fraction ◽  
Bentonite Clay ◽  
Polyamide 6 ◽  
Thermomechanical Properties ◽  
High Ratio ◽  
Organic Salts ◽  
Load Volume ◽  
Very High

The improvement in the properties of nanocomposites is achieved with a load volume fraction of up to 10% due to the very high ratio of the load aspect. Moreover, they have the advantage of being processed with conventional equipment and techniques (extrusion, injection, etc.) used for polymers. In order for the clay to be uniformly dispersed in the polymer and there to be good interaction with the polymer matrix, superficial treatments of the clays with organic salts are essential for it to become organophilic, and, thus the material obtained has better performance. In this study, it was evaluated the influence of two speeds (100 and 200 rpm) of processing and thermo mechanical properties of nanocomposites with 3% of bentonite clay prepared with two speeds and two threads. The nanocomposites showed better properties as compared to properties of polyamide 6, especially the samples heated at screw speed of 100 rpm.

scholarly journals EPOXY-CONTAINING ADDUCTS OF ROSIN ASLIGHT- AND THERMOSTABILIZERS FOR PVC

2020 ◽  
Vol 18 (4) ◽  
pp. 457-463
Author(s):  
M.S. Pirguliyeva ◽  
◽  
А.М. Guliyev ◽  
Keyword(s):  
Thermal Stability ◽  
Polyvinyl Chloride ◽  
Polymer Matrix ◽  
Frost Resistance ◽  
Impact Resistance ◽  
High Thermal Stability ◽  
Processing Temperature ◽  
Light Radiation ◽  
Epoxy Derivative ◽  
Derivatives Of

The thermo- and light-stabilizing activity of glycidyloxycarbonyl- and glycidyloxymethylsubstituted derivatives of the sulphur-containing rosin in the compositions on the basis of plasticized polyvinyl chloride were studied. It found that the proposed epoxy-derivative adducts of rosin possess thermal stability allowing them to withstand the processing temperature of polyvinyl chloride compositions. The developments showed that the proposed stabilizers can protect the polymer matrix against light radiation. It revealed that the film samples prepared with the help of the proposed stabilizers showed the high thermal stability, impact resistance, good frost resistance and mechanical strength.

Thermophysical and physical-mechanical properties of the modernized industrial PVC-plastic compound

2021 ◽  
pp. 84-93
Author(s):  
T. A. Borukaev ◽  
R. M. Martazanova
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Heat Release ◽  
Hydrogen Chloride ◽  
High Thermal Stability ◽  
Heat Of Combustion ◽  
Zinc Borate ◽  
Insulating Materials ◽  
Operational Characteristics

Compounds based on PVC-plasticate of I40-13A grade, zinc borate, antimony and chalk oxide have been obtained. The thermal stability, thermophysical and operational properties of the obtained compounds have been investigated. It was found that the modernized compounds have high thermal stability values that meet the requirements for insulating materials. It is shown that the obtained compounds have low values of heat release, heat of combustion, smoke formation and release of hydrogen chloride. It was found that the operational characteristics of the modernized PVC cable compounds are improved.

Microstructure and Properties of Ultrafine Grained Cu-0.73%Cr Alloy after High Pressure Torsion

2011 ◽  
Vol 391-392 ◽  
pp. 385-389 ◽  
Author(s):  
Kun Xia Wei ◽  
Wei Wei ◽  
Igor V. Alexandrov ◽  
Qing Bo Du ◽  
Jing Hu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Electrical Conductivity ◽  
Grain Size ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Aging Treatment ◽  
High Thermal Stability ◽  
Subsequent Aging ◽  
Ultrafine Grained

Microstructure, mechanical properties and electrical conductivity in Cu-0.73%Cr alloy after HPT process and the subsequent aging treatment have been investigated. Ultrafine grained structure with the grain size ~150 nm has been achieved after the HPT and the subsequent aging treatment. Ultrafine grains with some growth twins were preserved in the overaged state, showing high thermal stability. The peak microhardness and tensile strength of Cu-0.73%Cr alloy after the HPT was found at 480 °C for 2 hours. Electrical conductivity shows an increase trend in the different aging states.

scholarly journals Barrier Properties and Structural Study of Nanocomposite of HDPE/Montmorillonite Modified with Polyvinylalcohol

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
María C. Carrera ◽  
Eleonora Erdmann ◽  
Hugo A. Destéfanis
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Structural Study ◽  
Polymer Matrix ◽  
High Density Polyethylene ◽  
Barrier Properties ◽  
Polymeric Matrix ◽  
Melt Blending ◽  
Clay Layers ◽  
Thermal Stability Of

In this work was studied the permeation of CO2in films of high-density polyethylene (HDPE) and organoclay modified with polyvinylalcohol (MMTHDTMA/PVA) obtained from melt blending. Permeation study showed that the incorporation of the modified organoclay generates a significant effect on the barrier properties of HDPE. When a load of 2 wt% ofMMTHDTMA/PVAwas incorporated in the polymer matrix, the flow of CO2decreased 43.7% compared to pure polyethylene. The results of TEM showed that clay layers were dispersed in the polymeric matrix, obtaining an exfoliated-structure nanocomposite. The thermal stability of nanocomposite was significantly enhanced with respect to the pristine HDPE. DSC results showed that the crystallinity was maintained as the pure polymeric matrix. Consequently, the decrease of permeability was attributable only to the effect of tortuosity generated by the dispersion ofMMTHDTMA/PVA. Notably the mechanical properties remain equal to those of pure polyethylene, but with an increase in barrier properties to CO2. This procedure allows obtaining nanocomposites of HDPE with a good barrier property to CO2which would make it competitive in the use of packaging.

Synthesis of a comb-like silicone-epoxy co-polymer with high thermal stability and mechanical properties for ablative materials

2020 ◽  
Vol 157 ◽  
pp. 104742
Author(s):  
Youquan Ling ◽  
Jiemin Luo ◽  
Zhengguang Heng ◽  
Yang Chen ◽  
Huawei Zou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
High Thermal Stability
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