Korea-Australia Rheology Journal最新文献_第4页

Electrorheological behavior of heat-treated sepiolite suspension 热处理海泡石悬浮液的电流变特性

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-10-02 DOI: 10.1007/s13367-023-00074-x

So Yeon Ahn, Chengbin Yu, Young Seok Song

引用次数: 0

Rheological properties of yam mucilage 山药黏液的流变性能

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-09-22 DOI: 10.1007/s13367-023-00071-0

Nguyen Ngoc Minh

引用次数: 0

A review on modern variants of the partitioned pipe mixer: designs, performances, and applications 隔管式混合器的现代变种:设计、性能和应用

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-09-16 DOI: 10.1007/s13367-023-00069-8

Seon Yeop Jung, Tae Gon Kang

{"title":"A review on modern variants of the partitioned pipe mixer: designs, performances, and applications","authors":"Seon Yeop Jung, Tae Gon Kang","doi":"10.1007/s13367-023-00069-8","DOIUrl":"10.1007/s13367-023-00069-8","url":null,"abstract":"<div><p>This paper presents a comprehensive review of the partitioned pipe mixer (PPM) and its design variants: the barrier-embedded partitioned pipe mixer (BPPM) and the groove-embedded partitioned pipe mixer (GPPM). These mixers utilize chaotic advection as their mixing mechanism in the laminar flow regime. The review first focuses on the flow and mixing characteristics of these mixers, considering the influence of the operating conditions and design variables. The advantages and flexibility of the BPPM and GPPM over the original PPM are highlighted. The investigation covers mixing performance in both the creeping and non-creeping flow regimes. In addition, this review examines the impact of thixotropy and fluid inertia on mixing performance of the mixers, revealing irregular trends. It emphasizes the importance of carefully considering thixotropy and inertia when selecting appropriate mixing protocols and operating conditions. Furthermore, the potential use of chaotic mixing by the BPPM in filtration processes is briefly reviewed. In conclusion, the review summarizes the limitations of the previous studies and suggesting future research directions. Further studies are expected to explore the potential of these types of mixers in improving mixing performance in various industries, particularly those dealing with rheologically complex fluids.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 4","pages":"229 - 247"},"PeriodicalIF":1.3,"publicationDate":"2023-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135305612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The competing role of shear and extension-induced first normal stress differences within a mixed flow for a viscoelastic fluid 粘弹性流体混合流动中剪切和拉伸引起的第一正应力差的竞争作用

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-09-12 DOI: 10.1007/s13367-023-00070-1

Huan-Chang Tseng

{"title":"The competing role of shear and extension-induced first normal stress differences within a mixed flow for a viscoelastic fluid","authors":"Huan-Chang Tseng","doi":"10.1007/s13367-023-00070-1","DOIUrl":"10.1007/s13367-023-00070-1","url":null,"abstract":"<div><p>Interested in the previous work of Walters et al<i>.</i> (Korea Aust Rheol J 21:225–233, 2009) regarding the competing roles of extensional viscosity and normal stress differences in complex flows of elastic liquids, rheological studies rarely discuss the relationship between the shear and extension-induced first normal stress differences (N1S and N1E) within a mixed flow for a viscoelastic fluid. One, therefore, derives N1S and N1E related to Weissenberg’s number and Trouton’s ratio. The classic White–Metzner viscoelastic constitutive equation coupled with the recent GNF-X (Generalized Newtonian Fluid eXtended) weighted shear/extension viscosity has the potential to show the typical vortex growth in entry flow simulations. Based on the improved White–Metzner model, demonstrating the opposite effect of N1S and N1E with respect to strain rates is evident. N1S mainly dominates the shell layer near the wall boundary at high strain rates, whereas N1E controls the center core at low strain rates. In contraction flow simulations, the predicted slit-die velocity profile is in good agreement with experimental data. It is significant to conclude that N1E hinders flow and N1S facilitates flow. In addition, a comparison of extensional-thickening and extensional-thinning viscosity curves for the velocity profile is discussed herein.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 4","pages":"307 - 321"},"PeriodicalIF":1.3,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135826816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rheological behavior and microstructure formation of Si/C anode slurries for Li-ion batteries 锂离子电池用硅/碳负极浆料流变行为及微观结构形成

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-09-11 DOI: 10.1007/s13367-023-00067-w

Jeong Hoon Park, Chan Hyeok Ahn, Kyung Hyun Ahn

{"title":"Rheological behavior and microstructure formation of Si/C anode slurries for Li-ion batteries","authors":"Jeong Hoon Park, Chan Hyeok Ahn, Kyung Hyun Ahn","doi":"10.1007/s13367-023-00067-w","DOIUrl":"10.1007/s13367-023-00067-w","url":null,"abstract":"<div><p>In this study, we systematically investigate the rheological behavior and microstructure formation of the anode slurries containing silicon (Si), carbon black (CB), and carboxymethyl cellulose (CMC) from the perspective of interactions between the constituent components, aiming to provide a fundamental understanding of the dispersion characteristics of Si-based anode slurries. The CMC adsorbs onto both particles (CB/Si) but has different effects on the inter-particle interactions (CB–CB and Si–Si). It stabilizes the CB particles through electro-steric interactions, whereas it agglomerates the Si particles through bridging interactions, in aqueous medium. In the meanwhile, the CMC selectively adsorbs onto CB particles among the two particles. Therefore, at a CMC content lower than the optimum graft density where CB particles are adsorbed and saturated by CMC, it acts as a dispersant in the slurries. However, at a higher content, the CMC that remains after adsorption on CB particles adsorbs onto Si particles and acts as a flocculant for the particles in the slurries. The origin of selective adsorption is understood in terms of the driving forces for adsorption and the surface energy analysis. We anticipate our findings provide a useful guideline for the Si slurry design in terms of its dispersion and contribute to the development of Si anode technology.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 4","pages":"335 - 347"},"PeriodicalIF":1.3,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135936323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The conflicting role of shear thinning and extensional thickening on corner vertex within entry flow for branched and filled polymer melts 支化填充聚合物熔体入口流动角点剪切减薄与拉伸增厚的冲突作用

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-08-31 DOI: 10.1007/s13367-023-00068-9

Huan-Chang Tseng

引用次数: 0

Research on the rheological properties of a silicone oil-based ferrofluid 硅油基铁磁流体流变特性研究

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-08-21 DOI: 10.1007/s13367-023-00065-y

Jiajia Zhang, Hongchao Cui, Shida Han, Zhenkun Li, Jingjing Lu

{"title":"Research on the rheological properties of a silicone oil-based ferrofluid","authors":"Jiajia Zhang, Hongchao Cui, Shida Han, Zhenkun Li, Jingjing Lu","doi":"10.1007/s13367-023-00065-y","DOIUrl":"10.1007/s13367-023-00065-y","url":null,"abstract":"<div><p>To study the overall rheological characteristics of the silicone oil-based ferrofluid, a chemical co-precipitation method was adopted for preparation, and transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) were used for characterization. The average size of Fe<sub>3</sub>O<sub>4</sub> magnetic particles was 10.4 nm and the saturation magnetization of the ferrofluid was 5.98 emu/g. Then, the fluidity, magnetoviscous effect and viscoelasticity of the ferrofluid were studied using a rotational rheometer. The results showed obvious shear thinning of the silicone oil-based ferrofluid under an external magnetic field, and the yield stress of the ferrofluid could not be accurately obtained by fitting the flow curve with an H–B model at a continuous shear rate. A strong magnetoviscous effect could be observed at different shear rates and temperatures. The magnetoviscous parameter <i>R</i> increased with the increase of temperature and its variation decreased with the increase of shear rate. Moreover, based on the magnetic particle chain model and the viscosity–temperature characteristics of the base carrier liquid, different mechanisms of temperature influence on the magnetoviscous effect were analyzed. Finally, a discussion of the microstructure evolution mechanism of the ferrofluid in the modulus changing with frequency was presented through the viscoelastic analysis of the silicone oil-based ferrofluid.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 3","pages":"179 - 190"},"PeriodicalIF":1.3,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13367-023-00065-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6713748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pulsatile flow of thixotropic blood in artery under external body acceleration and uniform magnetic field: Biomedical Application 体外加速度和均匀磁场作用下动脉触变性血的脉动流动:生物医学应用

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-08-19 DOI: 10.1007/s13367-023-00066-x

Louiza Cheffar, Abdelhakim Benslimane, Karim Bekkour, Djamel Sadaoui, Adel Benchabane

{"title":"Pulsatile flow of thixotropic blood in artery under external body acceleration and uniform magnetic field: Biomedical Application","authors":"Louiza Cheffar, Abdelhakim Benslimane, Karim Bekkour, Djamel Sadaoui, Adel Benchabane","doi":"10.1007/s13367-023-00066-x","DOIUrl":"10.1007/s13367-023-00066-x","url":null,"abstract":"<div><p>In this work, a numerical model is carried out to investigate the magneto-hemodynamics of blood driven by an oscillating pressure gradient and exposed to a uniform magnetic field and an external body acceleration. The non-Newtonian nature of blood was taken into account using a time-dependent thixotropic model. Incompressible, axisymmetric, and laminar flow assumptions were used to simplify the non-linear partial differential equations. The velocity field and wall shear stress distribution are numerically solved using the finite difference method. The analytical solution of the velocity distribution of a fully developed pulsatile flow of a Newtonian fluid is used to validate the numerical solution. Further research is done into how structural traits, the average of the pressure gradient, body acceleration, and the magnetic field affect the magneto-hemodynamic properties of blood. The findings indicate how the various characteristics taken into account affected the blood's magneto-hemodynamic behavior in arteries.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 4","pages":"361 - 372"},"PeriodicalIF":1.3,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84751988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Temperature-dependent rheological behavior of cathode slurry for lithium-ion battery under steady and dynamic tests 锂离子电池正极浆料在稳态和动态试验下的温度依赖性流变行为

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-07-11 DOI: 10.1007/s13367-023-00064-z

Bin Zhao, Deshun Yin, Yunfei Gao, Jiangtao Ren

{"title":"Temperature-dependent rheological behavior of cathode slurry for lithium-ion battery under steady and dynamic tests","authors":"Bin Zhao, Deshun Yin, Yunfei Gao, Jiangtao Ren","doi":"10.1007/s13367-023-00064-z","DOIUrl":"10.1007/s13367-023-00064-z","url":null,"abstract":"<div><p>The rheological property of cathode slurry is commonly influenced by coating speed and mixing temperature, thereby leading to its storage stability and coating uniformity. In this study, the effect of the temperature of slurry on the rheological behaviors is investigated under various shear rates and temperatures based on steady and dynamic tests as well as theoretical models. In the flow experiments, the thixotropic behavior of the slurry is observed at all temperatures tested, and it is reduced with the increase in temperature. The experimental data is captured well by rheological models, and the model parameters are evaluated under the combined effects of shearing and temperature, resulting in two generalized state equations for the description of the flow properties of the slurry. In addition, microstructural rearrangement and polymeric entanglement at high temperatures cause viscosity and modulus to change, giving rise to complex rheological behavior in creep and oscillatory shear. Compared with slurry at 25 and 40 °C, both storage and loss moduli are dependent on oscillatory strain in the range of 0.1–1000% at 65 °C. The difference in characteristic strain corresponding to yielding and strain stiffening behavior is only observed at high temperatures, whereas relaxation times were independent of temperature in the oscillatory shear test. Understanding the effect of the temperature of slurry on rheological behaviors will be useful for improving the manufacturing efficiency of electrodes.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 3","pages":"191 - 201"},"PeriodicalIF":1.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6713750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combined effect of hybrid carbon fillers on the physical and rheological properties of polyvinylidene fluoride composites 杂化碳填料对聚偏氟乙烯复合材料物理流变性能的综合影响

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-07-08 DOI: 10.1007/s13367-023-00062-1

Wonjun Kim, Yuna Oh, Jong-Young Jeon, Bong-Seob Shin, Youngho Eom, Dong Wook Chae

{"title":"Combined effect of hybrid carbon fillers on the physical and rheological properties of polyvinylidene fluoride composites","authors":"Wonjun Kim, Yuna Oh, Jong-Young Jeon, Bong-Seob Shin, Youngho Eom, Dong Wook Chae","doi":"10.1007/s13367-023-00062-1","DOIUrl":"10.1007/s13367-023-00062-1","url":null,"abstract":"<div><p>Three different types of carbon materials [carbon nanotubes (CNTs), carbon black (CB), and carbon fibers (CFs)] were incorporated into polyvinylidene fluoride (PVDF) as single fillers or hybrid fillers (CNT/CB and CNT/CF) via solution blending. The physical properties of the hybrid filler systems such as the electrical, thermal, morphological, and rheological properties were compared to those of the single filler systems. Images of the PVDF composites containing hybrid fillers obtained by a field-emission scanning electron microscope showed that CB appeared to be embedded between highly entangled nanotubes, promoting their debundling in the PVDF matrix. The hybrid filler systems of CB and CF with 0.5 wt% nanotubes were electrically conductive from the corresponding content of 1 wt%, showing maximum values from 5 wt% CB and 10 wt% CF. In the hybrid filler systems, the extent of the increase in crystallization temperature (Tc) in the presence of CB or CF was more prominent at a lower CNT content of 0.5 wt%. In the hybrid systems of CB with 0.5 wt% nanotubes, the melting peak for the β phase was generated from 1 wt% CB and its intensity increased with CB content. On the contrary, the hybrid filler systems of CF with nanotubes did not provide a new peak. Regarding the rheological properties, the complex viscosity (<i>η</i>*) of PVDF/CNT0.5/CB increased with CB content, a pattern similar to that of the single filler system of CB. On the contrary, the presence of CF with 0.5 wt% nanotubes slightly increased <i>η</i>* with CF content, while that with 1 wt% nanotubes notably increased <i>η</i>*, exhibiting a sharp increase at 10 wt%.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 3","pages":"137 - 155"},"PeriodicalIF":1.3,"publicationDate":"2023-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6713803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0