Study on thermo-phisycal characteristics of the composites based on polyolephines and oligoalkylates obtained from oil fractions

2020 ◽  
pp. 61-66
Author(s):  
Y.M. Babashova ◽  
Keyword(s):  
Phase Transition ◽  
Aromatic Hydrocarbons ◽  
Polymer Materials ◽  
Physical Parameters ◽  
Oil Fractions ◽  
Differential Scanning Colorimetry ◽  
The Future

The paper presents the results on obtainment of oligoalkylates from the fluid reforming fractions containing aromatic hydrocarbons and the application of obtained products with polyolephines in the composition of composites, as well as on the study of their thermo-physical parameters. The composition of obtained composites was identified using IKS, SEM, RFA and other methods. The change of thermo-physical parameters of the initial polyolephine matrix was specified in each case. Via differential scanning colorimetry it was defined that in the future these composites may be used as various polymer materials including those with phase transition.

THERMAL NEUTRALIZATION OF CARBON-CONTAINING SLUDGE

2021 ◽  
Vol 3 (1) ◽  
pp. 118-123
Author(s):  
D. YU. UMANSKY ◽  
◽  
M. V. VASINA ◽  
Keyword(s):  
Sulfuric Acid ◽  
Aromatic Hydrocarbons ◽  
Petroleum Products ◽  
Oil Refinery ◽  
Gas Oil ◽  
Hazard Class ◽  
Resinous Substance ◽  
Oil Fractions ◽  
Petroleum Distillates

Acid tar is a resinous substance, which in most cases has a viscous structure. They are obtained as a result of sulfuric acid purification of petroleum distillates, oil residues, in the production of sulfonate additives, in the sulfonation and purification of oils, paraffins, kerosene and gas oil fractions and other petroleum products from aromatic hydrocarbons. Until recently, this type of waste was temporarily accumulated in specially designated areas - acid tar storage ponds, which were located near the oil refinery, which had a significant impact on the environment. The paper considers the process of formation of acid tar on the example of the production of sulfonate additives. The composition of the mixture of acid tar and sulfonate sludge was evaluated, and the hazard class of this type of waste was determined. Methods of utilization of acid tar are studied and a method of utilization of acid tar for the considered production is proposed.

scholarly journals Evaluation of the suitability of synthetic polymer fuels in self-ignition engines

2019 ◽  
Vol 178 (3) ◽  
pp. 129-134
Author(s):  
Oleh KLYUS ◽  
Paweł KRAUSE ◽  
Vladimir MARKOV ◽  
Anna SKARBEK-ŻABKIN ◽  
Bowen SA
Keyword(s):  
Volume Fraction ◽  
Synthetic Polymer ◽  
Polymer Materials ◽  
Physical Parameters ◽  
Sauter Mean Diameter ◽  
Synthetic Fuels ◽  
Limit Values ◽  
Experimental Part

The article presents a method for determining the quality of spraying a mixture of oil and synthetic fuels obtained from the pro-cessing of polymer materials. Laboratory tests of physical parameters of such a mixture were carried out, which made it possible to determine the limit values for the volume fraction of synthetic fuels. The method of determining the suitability of this type of fuel takes into account the criterion numbers Re and Oh, which include physical parameters such as viscosity, density, and surface tension. The experimental part concerning the distribution of droplets of injected fuel and determination of Sauter Mean Diameter using laser diffrac-tion confirmed the usefulness of the developed method for the assessment of the possibility of using a mixture of petroleum-based and synthetic fuels in self-ignition engines.

scholarly journals Phase Transition in Modified Newtonian Dynamics (MONDian) Self-Gravitating Systems

Entropy ◽  
2021 ◽  
Vol 23 (9) ◽  
pp. 1158
Author(s):  
Mohammad Hossein Zhoolideh Zhoolideh Haghighi ◽  
Sohrab Rahvar ◽  
Mohammad Reza Rahimi Rahimi Tabar
Keyword(s):  
Phase Transition ◽  
Binary Systems ◽  
Dimensional Space ◽  
Gravitational Interaction ◽  
Three Dimensional ◽  
Physical Parameters ◽  
Canonical Systems ◽  
Modified Newtonian Dynamics ◽  
Newtonian Dynamics ◽  
Gravitating Systems

We study the statistical mechanics of binary systems under the gravitational interaction of the Modified Newtonian Dynamics (MOND) in three-dimensional space. Considering the binary systems in the microcanonical and canonical ensembles, we show that in the microcanonical systems, unlike the Newtonian gravity, there is a sharp phase transition, with a high-temperature homogeneous phase and a low-temperature clumped binary one. Defining an order parameter in the canonical systems, we find a smoother phase transition and identify the corresponding critical temperature in terms of the physical parameters of the binary system.

THE FUTURE PHASE TRANSITION IN DARK MATTER

2000 ◽  
Author(s):  
VLADIMIR BURDYUZHA ◽  
YURI PONOMAREV ◽  
OL'GA LALAKULICH ◽  
GRIGORY VERESHKOV
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
The Future

scholarly journals Rings, rings, rings: what does CN tell us?

2017 ◽  
Vol 13 (S332) ◽  
pp. 233-236
Author(s):  
Paolo Cazzoletti
Keyword(s):  
Emission Lines ◽  
Physical Parameters ◽  
Vibrationally Excited ◽  
Spatially Resolved ◽  
The Future ◽  
Thermochemical Code

AbstractCN emission lines are among the brightest, and have been observed in the last 20 years with single dish observations. With modern interferometers, we are now able to spatially resolve CN emission, which often shows ring-like structures. We investigate whether such structures trace the morphology of the disks, or if they have a chemical origin. By using the thermochemical code DALI, we conclude that CN formation is triggered by the existence of vibrationally excited H2*, produced by FUV pumping of H2. Herbig stars therefore generally have larger rings and higher CN fluxes than TTauri. Disks with higher masses and flaring also show stronger CN emission and larger rings. CN observations could in the future provide important constraints on some important disk physical parameters. The results of the models are well consistent with the spatially resolved CN observations to-date available.

scholarly journals Polysiloxane-Based Side Chain Liquid Crystal Polymers: From Synthesis to Structure–Phase Transition Behavior Relationships

Polymers ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 794 ◽  
Author(s):  
Lanying Zhang ◽  
Wenhuan Yao ◽  
Yanzi Gao ◽  
Cuihong Zhang ◽  
Huai Yang
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Molecular Design ◽  
Molecular Structures ◽  
Polymer Materials ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Thermal Stabilities ◽  
Structure Phase Transition

Organosilicon polymer materials play an important role in certain applications due to characteristics of much lower glass transition temperatures (Tg), viscosities, surface energy, as well as good mechanical, thermal stabilities, and insulation performance stemming from the higher bond energy and the larger bond angles of the adjacent silicon-oxygen bond. This critical review highlights developments in the synthesis, structure, and phase transition behaviors of polysiloxane-based side chain liquid crystal polymers (PSCLCPs) of linear and cyclic polysiloxanes containing homopolymers and copolymers. Detailed synthetic strategies are elaborated, and the relationship between molecular structures and liquid crystalline phase transition behaviors is systematically discussed, providing theoretical guidance on the molecular design of the materials.

scholarly journals Systems Biology and Synthetic Biology: A New Epoch for Toxicology Research

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Mark T. Mc Auley ◽  
Hyunok Choi ◽  
Kathleen Mooney ◽  
Emily Paul ◽  
Veronica M. Miller
Keyword(s):  
Systems Biology ◽  
Synthetic Biology ◽  
Aromatic Hydrocarbons ◽  
Personalised Medicine ◽  
Adverse Birth Outcomes ◽  
New Era ◽  
Advantages And Disadvantages ◽  
The Future ◽  
Polycyclic Aromatic ◽  
Innovative Techniques

Systems biology and synthetic biology are emerging disciplines which are becoming increasingly utilised in several areas of bioscience. Toxicology is beginning to benefit from systems biology and we suggest in the future that is will also benefit from synthetic biology. Thus, a new era is on the horizon. This review illustrates how a suite of innovative techniques and tools can be applied to understanding complex health and toxicology issues. We review limitations confronted by the traditional computational approaches to toxicology and epidemiology research, using polycyclic aromatic hydrocarbons (PAHs) and their effects on adverse birth outcomes as an illustrative example. We introduce how systems toxicology (and their subdisciplines, genomic, proteomic, and metabolomic toxicology) will help to overcome such limitations. In particular, we discuss the advantages and disadvantages of mathematical frameworks that computationally represent biological systems. Finally, we discuss the nascent discipline of synthetic biology and highlight relevant toxicological centred applications of this technique, including improvements in personalised medicine. We conclude this review by presenting a number of opportunities and challenges that could shape the future of these rapidly evolving disciplines.

Thermodynamics and geometrothermodynamics of Born–Infeld black holes with cosmological constant

2015 ◽  
Vol 24 (11) ◽  
pp. 1550092
Author(s):  
Hernando Quevedo ◽  
María N. Quevedo ◽  
Alberto Sánchez
Keyword(s):  
Phase Transition ◽  
Black Holes ◽  
Cosmological Constant ◽  
Thermodynamic System ◽  
Physical Parameters ◽  
Spherically Symmetric ◽  
Transition Structure ◽  
Thermodynamic Variable ◽  
Thermodynamic Variables ◽  
Range Of Values

In this paper, we investigate a class of spherically symmetric Born–Infeld black holes which contains the mass, electric charge, Born–Infeld parameter and the cosmological constant as physical parameters. We show that for the mass to be an extensive thermodynamic variable, it is necessary to consider the cosmological constant and the Born–Infeld parameter as thermodynamic variables as well. We analyze the properties of such a thermodynamic system, explore the range of values where the system is thermodynamically well-defined, and the phase transition structure. In addition, we show that the equilibrium manifold in the context of geometrothermodynamics reproduces correctly the thermodynamic properties of this black hole class.

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