Relevant bibliographies by topics / Plastic viscosity

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Plastic viscosity'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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Journal articles on the topic "Plastic viscosity"

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Rahmadhani Banurea, Nelly L. Ompusunggu, Delima Lailan Sari Nasution, and Tua Raja Simbolon. "Viscosity Characteristics of Renewable Energy Fuels from PP and HDPE Plastic Waste Conversion." Journal of Technomaterial Physics 6, no. 2 (2024): 099–104. http://dx.doi.org/10.32734/jotp.v6i2.14028.

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This study investigates the viscosity characteristics of Renewable Energy Fuel derived from plastic waste, specifically Polypropylene (PP) and High-Density Polyethylene (HDPE). The plastics were subjected to pyrolysis using a plastic waste conversion technology machine at temperatures of 250°C to 400°C. Compared to diesel, the average viscosity of pyrolyzed PP oil is approximately 4.25 cSt, while for pyrolyzed HDPE oil, it is about 3.3725 cSt. Compared to gasoline, the average viscosity values for the oils are 0.603 cSt for PP and 0.5965 cSt for HDPE. These results indicate that both oils have
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Anggara, Mietra, Ajie Prana Mesa, and Bernadus Crisanto Putra Mbulu. "ANALISIS PROPERTI BAHAN BAKAR MINYAK DARI PLASTIK LDPE (LOW DENSITY POLYETHYLENE) DAN PET (POLYETHYLENE TEREPHTHALATE) MENGGUNAKAN PROSES PIROLISIS." Jurnal Energi dan Teknologi Manufaktur (JETM) 5, no. 02 (2022): 1–10. http://dx.doi.org/10.33795/jetm.v5i02.138.

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Plastic waste is an environmental problem that is hotly discussed in the era of globalization. Almost all people are starting to realize the dangers caused by environmental damage. The purpose of this study was to determine the properties of fuel oil resulting from the pyrolysis process for LDPE (Low Density Polyethylene) and PET (Polyethylene Terephthalate) plastics. The research method used is through experiments with the Pyrolysis process. In managing LDPE and PET plastic waste, namely the pyrolysis technique which can produce fuel oil. The types of plastic used in this study were LDPE plas
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Joy, Ehimwenma Ossai Eghe Amenze Oyedoh Vera Ogheneovo Magbuwe Messiah Innocent Atapia. "Optimization of the Formulation of Drilling Mud using Box – Behnken Design." Journal of Energy Technology and Environment 7, no. 2 (2025): 166–73. https://doi.org/10.5281/zenodo.15609815.

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<em>This study examines the formulation and optimization of drilling mud utilizing locally sourced materials, specifically cassava starch, corn cob ash, and sodium hydroxide (NaOH), as economical and sustainable alternatives. The clay was evaluated, formulated, and optimized using Response Surface Methodology, specifically employing the Box-Behnken Design to enhance critical rheological parameters, including apparent viscosity and plastic viscosity. Experimental results demonstrate that these locally sourced additives enhance drilling fluid performance, providing competitive rheological charac
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Techawinyutham, Laongdaw, and Wiroj Techawinyutham. "Effect of Solvent Cleaning on Thermo-Mechanical and Rheological Properties of Plastic Wastes from Municipal Solid Waste (MSW)." Key Engineering Materials 856 (August 2020): 230–36. http://dx.doi.org/10.4028/www.scientific.net/kem.856.230.

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The plastics from municipal solid waste (MSW) were modified to improve cleanness for adding value. The stir and sonication were performed as cleaning processes. Xylene, tetrachloroethylene, chloroform, acetone and toluene were used as solvent cleaning. The most suitable cleaning process was sonication method with cleaning time of 5 min and the appropriate solvent was xylene for washing the plastic wastes for further study in terms of thermo-mechanical and rheological properties. The cleaning process was successful as evidence in thermogravimetric analysis (TGA) results. The properties of new p
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Ali, Douaa Hussein, and Muhannad A. R. Mohammed. "Studying the Rheological Properties of Non-Newtonian Fluids Under the Addition of Different Chemical Additives." Al-Nahrain Journal for Engineering Sciences 23, no. 1 (2020): 68–80. http://dx.doi.org/10.29194/njes.23010068.

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This research study the rheological properties ( plastic viscosity, yield point and apparent viscosity) of non-Newtonian fluids under the addition of different chemical additives with different concentrations, such as (xanthan gum (xc-polymer) , carboxy methyl cellulose ( high and low viscosity ) ,polyacrylamide, polyvinyl alcohol, starch, quebracho, chrome lignosulfonate, and sodium chloride (NaCl). Fann viscometer model 800 with 8-speeds was used to measure the rheological properties of these samples, that have already been prepared. All samples were subjected to Bingham plastic model. It wa
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Xu, Fang, Ming Kai Zhou, and Jian Ping Chen. "Research on the Rheology of Polymer Latex Modified Cement Paste Containing Mineral Admixtures." Key Engineering Materials 501 (January 2012): 544–48. http://dx.doi.org/10.4028/www.scientific.net/kem.501.544.

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The rheology of styrene-butadiene rubber (SBR) polymer latex modified cement paste (SMCP) was studied in this paper. The effects of mineral admixtures (MAs) on the rheological performance of SMCP were studied using the Brookfield R/S Plus rheometer. The results indicate that the plastic viscosity of SMCP with different shear rate all decreases as the test time extends. As the shear rate increases, the plastic viscosity reduces significantly. The rheology of SMCP improves as the SBR latex content gradually increases. With increasing quantities of fly ash (FA), the yield stress of SMCP gradually
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Hong, Zhang Lian, Hidehiro Yoshida, and Taketo Sakuma. "High Temperature Creep Strength of Si3N4-Y2Si2O7 Ceramics by Stress Relaxation Based on a New Interpretation Model." Key Engineering Materials 336-338 (April 2007): 1420–23. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1420.

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A new interpretation model, instead of classical Kohlrausch-Williams-Watt (KWW) equation, was applied to interpret stress relaxation behavior of Si3N4-Y2Si2O7 ceramics. Results revealed that the new model could obtain reasonable relaxation plastic viscosity and viscoelastic viscosity under testing temperature range of 1300°C~1575°C. From the plotted curve of viscosity vs 1/RT, an activation energy change occurred around 1500°C was found for both plastic viscosity and viscoelastic viscosity curves. This change, which indicated the microstructure change, was in good agreement with the significan
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Schall, Christoph, and Volker Schöppner. "Material Characterization of Polypropylene and Polystyrene Regarding Molecular Degradation Behavior." Materials 16, no. 17 (2023): 5891. http://dx.doi.org/10.3390/ma16175891.

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During the processing of thermoplastics, polymers are subjected to high stress. As a result of this stress, the polymer chains break, leading to a lower molar mass. This further leads to a lower viscosity of the plastic melt and, eventually, to poorer mechanical properties of the manufactured plastic product. Especially in the context of recycling plastics, this poses a challenge to process technology and product properties. This work aims is to provide a prediction of the material degradation under known stress, so that, for example, a process design that is gentle on the material can be carr
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Dong, Rui, Aodong Gao, Ying Zhu, Bin Xu, Jierong Du, and Shujiang Ping. "The Development of a New Thermoplastic Elastomer (TPE)-Modified Asphalt." Buildings 13, no. 6 (2023): 1451. http://dx.doi.org/10.3390/buildings13061451.

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The use of (recycled) plastics and (waste) vulcanized rubber powder is the main polymer of raw materials, and composite organic additives are selected to fully combine with asphalt components. The physical and chemical reactions between different components are completed in dynamic mixing, establishing a morphology structure similar to thermoplastic elastomers (TPEs), and a thermoplastic highly asphaltized alloy material. TPE-modified asphalt not only significantly improves the high-temperature stability of the base asphalt, but also has the social and economic value of rational utilization of
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Guan, Kai Kai, Fang Yi Li, Gang Li, Peng Liu, and Jian Feng Li. "Rheological Properties of Slurry of Foam Cushion Packaging Based on Fiber and Starch." Advanced Materials Research 816-817 (September 2013): 1274–77. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.1274.

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The rheological behavior of slurry of foam cushion packaging based on fiber and starch was analyzed using digital viscosity meter. Meanwhile the response relationship of viscosity to time, shear rate to shear stress, and viscosity to temperature were also measured. The results showed that the slurry is a kind of non-newtonian fluid with the character of shear thinning. With the increasing of shear rate, apparent viscosity of system keeps in decreasing till the steady state finally. With temperature rising, plastic viscosity and yield strength of slurry will be smaller susceptibly. At last, Cas
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Dissertations / Theses on the topic "Plastic viscosity"

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Zengeni, Brian Tonderai. "Bingham yield stress and Bingham plastic viscosity of homogeneous Non-Newtonian slurries." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2458.

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Thesis (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2016.<br>This dissertation presents how material properties (solids densities, particle size distributions, particle shapes and concentration) of gold tailings slurries are related to their rheological parameters, which are yield stress and viscosity. In this particular case Bingham yield stresses and Bingham plastic viscosities. Predictive models were developed from analysing data in a slurry database to predict the Bingham yield stresses and Bingham plastic viscosities from their material properties. The overal
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Soualhi, Hamza. "Optimisation de la viscosité des bétons à faible impact environnemental." Thesis, Cergy-Pontoise, 2014. http://www.theses.fr/2014CERG0712.

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Il est possible de modifier la composition des bétons utilisés dans le domaine de la construction pour réduire sensiblement le dégagement de CO2 associé à leur fabrication. Ceci est obtenu en réduisant significativement la quantité de clinker et en incorporant des matériaux de substitution appelés additions. Elles sont généralement moins réactives et demandent, pour maintenir un niveau acceptable de performances mécaniques et de durabilité, une réduction importante du dosage en eau. C'est le cas des bétons à faible impact environnemental. L'utilisation de superplastifiant dans ces bétons perme
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Rizik, Vivian. "Analysis of an elasto-visco-plastic model describing dislocation dynamics." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2505.

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Dans cette thèse on s'intéresse à l'analyse théorique et numérique de la dynamique des densités des dislocations, où les dislocations sont des défauts cristallins, apparaissant à l'échelle microscopique dans les alliages métalliques. En particulier, on considère en premier temps l'étude du modèle de Groma-Czikor-Zaiser (GCZ) et en second temps l'étude du modèle de Groma-Balog (GZ). Il s'agit en réalité d'un système d'équations de type paraboliques et de type Hamilton-Jacobi non-linéaires. Au départ, nous démontrons un résultat d'existence et d'unicité d'une solution régulière en utilisant le p
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Ganaw, Abdelhamed I. "Rheology of grout for preplaced aggregate concrete : investigation on the effect of different materials on the rheology of Portland cement based grouts and their role in the production of preplaced aggregate concrete." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5766.

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Preplaced aggregate concrete (PAC) is produced by grouting high workability cement based grouts among the voids of compacted coarse aggregate mass. Because of its low shrinkage, PAC has been used for many repair jobs like; tunnel lines, dams and bridge piers. Moreover, it has been used for underwater construction. Grout has a major effect on the properties of produced PAC and well defined grout controls the properties of resulted PAC. The effect of types and amount of powder materials, admixtures, sand and water content on the properties of fresh and hardened grout for the production of PAC ha
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Cai, Shaobiao. "3D numerical modeling of dry/wet contact mechanics for rough, multilayered elastic-plastic solid surfaces and effects of hydrophilicity/hydrophobicity during separation with applications." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1205118488.

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Boudreault, Mélanie. "Determination of zero-shear viscosity of molten polymers." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20496.

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Measuring the zero-shear viscosity of a molten polymer is not at all straightforward. Available rheometers are unable to operate at shear rates low enough to measure this important property, especially for polymers that have a very broad molecular weight distribution or a high degree of long chain branching. A new falling ball viscometer, the Magnetoviscometer (MVM), has recently been developed in Austria for the measurement of melt viscosity at very low shear rates. The primary objective of the research was to evaluate this instrument as a tool for the routine measurement of the zero-shear vi
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Silva, Neto Miguel Arcangelo da. "Constribui??o t?cnica de um sistema de emuls?o inversa a base de ?leos vegetais para fluidos de perfura??o." Universidade Federal do Rio Grande do Norte, 2002. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15775.

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Made available in DSpace on 2014-12-17T15:01:19Z (GMT). No. of bitstreams: 1 MiguelASN.pdf: 491289 bytes, checksum: be60500500779f6a3fd87b90108feb8c (MD5) Previous issue date: 2002-09-27<br>The developments in formulating drilling fluids to apply in petroleum fields are based on new technologies and environmental challenges, where the technical performance of a developed drilling fluid is used to produce a minimum environmental impact, showing great economy in costs. It is well known that the potential use of oil-based drilling fluids is limited because these fluids when discharged in the s
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CAPELLE, THIERRY. "Penetration libre dans les sediments marins : etude du comportement dynamique et rheologique d'une argile reconstituee." Toulouse 3, 1988. http://www.theses.fr/1988TOU30045.

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Etude de la penetration libre dans les sediments marins afin d'en evaluer les capacites de resistance au cisaillement ou pour determiner des profondeurs d'enfouissement maximales. Les phenomenes limitant l'enfouissement sont du a la portance et au frottement. On determine les proprietes rheologiques et dynamique de l'argile a partir d'une serie de tirs de projectiles effectues en fosse d'essais. L'etude du decelerogramme d'essai distingue les phases ou le comportement du sol au contact du penetreur varie depuis l'hydrodynamique jusqu'a la visco-plasticite
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Catti, Paolo. "Analisi sismiche di un edifico esistente in c.a.: progettazione di sistemi di dissipatori fluido-viscosi in presenza di escursione plastica di travi e pilastri." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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L’obbiettivo della tesi è quello di andare a contestualizzare il metodo "Direct Five Step Procedure" (DFSP) per la progettazione di un sistema di dissipatori fluido-viscosi in un adeguamento/miglioramento sismico di un edificio esistente ed integrando la procedura tenendo conto della capacità duttile della struttura. Per fare ciò si è preso in esame un edificio esistente situato a L’Aquila caratterizzato da un rapporto C/D (capacità/domanda) intorno a 0.2-0.3 così da rendere necessario l’accoppiamento di dissipazione viscosa tramite smorzatori e di dissipazione isteretica attraverso il dannegg
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Yingsheng, Xing. "Finite Element Analysis of Drop Deformation in the Entrance Region of a Cylindrical Tube." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1302535388.

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Books on the topic "Plastic viscosity"

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Karnaukhov, V. G. Svi͡a︡zannye zadachi teorii vi͡a︡zkouprugikh plastin i obolochek. Nauk. dumka, 1986.

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Ovarlez, Guillaume, and Sarah Hormozi. Lectures on Visco-Plastic Fluid Mechanics. Springer, 2018.

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Ovarlez, Guillaume, and Sarah Hormozi. Lectures on Visco-Plastic Fluid Mechanics. Springer, 2019.

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Prout, Jeremy, Tanya Jones, and Daniel Martin. Anaesthesia for plastic and reconstructive surgery. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199609956.003.0028.

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This chapter describes the anaesthetic considerations for major plastic surgery and in particular free flap surgery including the physiology of the microcirculation. Laminar flow characteristics of the microcirculation allow the anaesthetist to manipulate the perfusion pressure, extent of vasodilation and viscosity to improve flow dynamics for improved flap outcome. The pathophysiology of a burn injury is described; the burn wound and systemic response including shock and inhalational injuries. The initial assessment of the burn follows an ABCDE approach with details of assessing burn area and
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Understanding The Rheology Of Concrete. Woodhead Publishing, 2012.

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Understanding the Rheology of Concrete. Elsevier Science & Technology, 2016.

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Zuev, Lev. Autowave Plasticity. Taylor & Francis Group, 2022.

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Autowave Plasticity. Taylor & Francis Group, 2020.

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Zuev, Lev. Autowave Plasticity: Localization and Collective Modes. Taylor & Francis Group, 2020.

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Zuev, Lev. Autowave Plasticity: Localization and Collective Modes. Taylor & Francis Group, 2020.

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Book chapters on the topic "Plastic viscosity"

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Gooch, Jan W. "Plastic Viscosity." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8839.

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Gooch, Jan W. "Plastic Viscosity." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8840.

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Gooch, Jan W. "Viscosity, Plastic." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_12609.

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Gooch, Jan W. "Coefficient of Plastic Viscosity." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2536.

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Hwalla, Joud, Mariane Saba, Joseph Assaad, and Hilal El-Hassan. "Performance of Metakaolin-Based Alkali-Activated Mortar for Underwater Placement." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-69626-8_9.

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AbstractThis study assesses the performance of metakaolin (MK)-based alkali-activated geopolymers as potential materials for underwater applications. Mortars were formulated using gradually higher sand volumes, which resulted in binder-to-sand ratios varying from 1:3 to 1:1.85 and 1:0.8. The alkali-activated solution (AAS) was produced using sodium silicate and sodium hydroxide. The AAS was adjusted to achieve a flow of 16 and 22 ± 1 cm while the setting times, plastic viscosity, washout loss, and 28-day compressive strengths were determined. Generally, an increase in AAS content prolonged set
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Lei, K., and Kai Feng Zhang. "Strain Rate Gradient Model with Couple Stress for Micro Scale Rigid-Viscosity-Plastic Deformation." In Superplasticity in Advanced Materials. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-435-9.323.

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Lu, D., Z. Sheng, B. Yan, and Z. Jiang. "Co-effects of Graphene Oxide and Silica Fume on the Rheological Properties of Cement Paste." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_26.

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AbstractPolycarboxylate superplasticizer is typically used to prepare a high-quality graphene oxide (GO) solution before mixing with cement grains. However, even if GO is well dispersed in water, they tend to re-agglomerate in the alkaline cement hydration environment, thus seriously decreasing the workability of the fresh mixture. In this study, we propose a more targeted method by synthesizing GO-coated silica fume (SF) to promote the utilization of GO in cement-based materials. Specifically, the surface of pristine SF was modified to convert their zeta potential (modified SF: MSF), then GO-
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Abe, A. "Development of the hybrid numerical simulation to clarify shock viscosity effects in a plastic shock wave front." In Shock Waves. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-27009-6_171.

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Grigorov, Andrii, Mikhailo Nahliuk, Alona Tulska, Andrew Ruzmetov, and Liliana-Laura Bădiță-Voicu. "Effect of the Effective Dynamic Viscosity of Plastic Lubricants Produced from Secondary Raw Materials on Their Tribological Properties." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70670-7_9.

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Canbek, Oğulcan, N. R. Washburn, and Kimberly E. Kurtis. "Rheology of Limestone Calcined Clay Cements (LC3): Predictive Modeling of Yield Stress and Plastic Viscosity with Machine Learning." In RILEM Bookseries. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-83889-7_42.

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Conference papers on the topic "Plastic viscosity"

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Standish, Riccardo, Jian Yin, Mirjana Minceva, et al. "Optimizing the Selection of Solvents for the Dissolution and Precipitation of Polyethylene." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.143217.

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Plastic recycling is prevalently mechanical, which is inefficient at removing contaminants and produces low-grade materials. Solvent-based polymer dissolution and precipitation is emerging as a low-energy alternative to mechanical recycling when tackling highly contaminated plastic waste streams. We present a computer-aided molecular and process design (CAMPD) formulation for the selection of optimal solvents and process temperatures for polymer recycling via a dissolution and precipitation process. A mixed-integer nonlinear programming (MINLP) model is proposed to minimize the energy requirem
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Al-Borno, Amal, Moavin Islam, and Henry Pedraza. "Proposed Test Protocol for Evaluating Internal Coating Systems for Railcar Sour Oil Applications." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-20646.

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Abstract Crude oil is usually transported by pipelines from the production areas to refineries. However, in North America, particularly Canada, a significant amount of crude oil is transported via specially designed railcars. The internals of the railcars are typically coated with a high-quality coating system to prevent corrosion. Still, coating failures do occur due to the unique cyclic operating service conditions of the railcars. Thus, elevated temperatures are used to reduce fluid viscosity with a resultant increase in the vapor pressure while the loading of the oil in the railcars. Once
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Rovnaník, Pavel, and Tomáš Žižlavský. "Quaternary Ammonium and Pyridinium Salts as Modifiers of the Rheological Properties of Geopolymer Pastes." In 2024 10th International Conference on Architecture, Materials and Construction & 2024 5th International Conference on Building Science, Technology and Sustainability. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-9yno8c.

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The study investigates the impact of quaternary ammonium and pyridinium salts on the rheological properties of metakaolin-based geopolymer pastes, with a focus on their application in 3D printing technology The experimental results demonstrated that the addition of these salts increased both the plastic viscosity and yield stress of the geopolymer mixtures, with the effect intensifying with higher concentrations and longer aliphatic chains. The coefficient of consistency derived from Herschel-Bulkley model increased from 1.78 up to 3.83 Pa·sn and the yield stress rose from 3.4 up to 31.8 Pa. T
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Fitzpatrick, Rick, Mike Slowik, and Alan Symmons. "Controlled Viscosity Injection Molding of Plastic Optics." In Optical Fabrication and Testing. OSA, 2021. http://dx.doi.org/10.1364/oft.2021.otu5b.1.

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Ferreira, Ricardo, Lúcia Bilro, Carlos Marques, Ricardo Oliveira, and Rogério Nogueira. "Refractive index and viscosity: dual sensing with plastic fibre gratings." In OFS2014 23rd International Conference on Optical Fiber Sensors, edited by José M. López-Higuera, Julian D. C. Jones, Manuel López-Amo, and José L. Santos. SPIE, 2014. http://dx.doi.org/10.1117/12.2058833.

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Bilro, L., N. Alberto, L. M. Sá, J. L. Pinto, and R. N. Nogueira. "Side-polished plastic optical fibre as refractive index, cure and viscosity sensor." In International Conference on Applications of Optics and Photonics, edited by Manuel F. Costa. SPIE, 2011. http://dx.doi.org/10.1117/12.892099.

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Saasen, Arild, and Jan David Ytrehus. "Viscosity Models for Drilling Fluids: Viscosity Parameters and Their Use." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96595.

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Abstract The most common viscosity models used in the drilling industry are the Bingham, the Power-Law and the Herschel-Bulkley models. The scope of the present paper is to outline how to select the individual models, and how the models need to be re-formulated to be able to have parameters with a physical meaning. In principle, the Bingham model itself have physical parameters being the yield point and the plastic viscosity. However, the Bingham model very often only very poorly describe the viscosity in complex fluids. This yield stress can be described within a reasonable accuracy by applic
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Hong, Sung-Ryong, Shaju John, and Norman M. Wereley. "Quasi-Steady Herschel-Bulkley Analysis of Magnetorheological Dampers With Preyield Viscosity." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82593.

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A magnetorheological (MR) fluid, modeled as a Bingham-plastic material, is characterized by a field dependent yield stress, and a (nearly constant) postyield plastic viscosity. Based on viscometric measurements, such a Bingham-plastic model is an idealization to physical magnetorheological behavior, albeit a useful one. A better approximation involves modifying both the preyield and postyield constitutive behavior as follows: (1) assume a high viscosity preyield behavior over a low shear rate range below the yield stress, and (2) assume a power law fluid (i.e., variable viscosity) above the yi
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Ding, Qian, Baojiang Sun, Zhiyuan Wang, et al. "Rheological Properties of Water-Based Drilling Fluids in Deep Offshore Conditions." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96719.

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Abstract In deep-water drilling, the drilling fluid is affected by the alternating temperature field derived from the low temperature of the seawater and the high temperature of the formation. The complicated wellbore temperature and pressure environments make the prediction of rheological properties of the drilling fluid difficult. In this study, the rheological properties of water-based drilling fluid in full temperature and pressure range of deep-water conditions were tested from 2 to 150 °C (35.6 to 302 °F) and 0.1 to 70 MPa (14.5 to 10000psi). The experiment was carried out by the OFI130-
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""Method of Estimating Plastic Viscosity of Cement Paste, Mortar, and Concrete Containing a Chemical Admixture"." In SP-217: Seventh CANMET/ACI International Conference on Superplasticizers and Other Chemical Admixtures in Concrete. American Concrete Institute, 2003. http://dx.doi.org/10.14359/12912.

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Reports on the topic "Plastic viscosity"

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Menendez, A., M. Coello, J. Suarez, et al. Processability and mechanical properties of spent coffee ground (SCG) and polypropylene biocomposites. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.bbb.5.

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The circular economy encourages optimizing use of plastics, waste reduction, sustainable materials, and processing of plastic products. In this framework, the use of agricultural waste materials promotes waste reduction and eco-design in plastic product manufacturing. This study researched the preparation of an isotatic polypropylene (PP) matrix (MFI 50 grade) with spent coffee grounds (SCG) and various commercial additives. The biocomposites were analyzed to evaluate their mechanical properties and processability. PP and SCG composites were synthesized with 30% SCG content with maleic anhydri
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Karst, Adèle, Michel Bouquey, Jérémie Soulestin, Cédric Samuel, and Thibault Parpaite. Formulation of highly electro-conductive thermoplastic composites using PEDOT-based fillers with controlled shape factor. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.pc.2.

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The objective of this study is to develop a new conductive thermoplastic material with superior electrical properties. Currently, conductive polymers are typically filled with carbon or metallic particles [1]. However, these filled thermoplastics exhibit drawbacks such as high rigidity, toxicity, and high viscosity [2]. An alternative approach investigated in this work is to substitute these fillers with intrinsically conductive polymers like Poly(3,4-ethylenedioxythiophene) (PEDOT). PEDOT can achieve exceptional electrical conductivities (over 1000 S.cm-1) when combined with polymeric dopants
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