Experimental separation of the onset of slip and sharkskin melt instabilities during the extrusion of silica-filled, styrene–butadiene rubber compounds

IF 2.3 3区工程技术 Q2 MECHANICS Rheologica Acta Pub Date : 2022-11-23 DOI:10.1007/s00397-022-01376-7

Alex Gansen, Martin Řehoř, Clemens Sill, Patrycja Polińska, Stephan Westermann, Jean Dheur, Jack S. Hale, Jörg Baller

{"title":"Experimental separation of the onset of slip and sharkskin melt instabilities during the extrusion of silica-filled, styrene–butadiene rubber compounds","authors":"Alex Gansen, Martin Řehoř, Clemens Sill, Patrycja Polińska, Stephan Westermann, Jean Dheur, Jack S. Hale, Jörg Baller","doi":"10.1007/s00397-022-01376-7","DOIUrl":null,"url":null,"abstract":"<div><h2>Abstract\n</h2><div><p>The flow curves of polymers often reveal the onset of melt instabilities such as sharkskin, stick–slip, or gross melt fracture, in order of increasing shear rates. The focus of this work lies in the application of the Göttfert sharkskin option to the investigation of flow curves of styrene-butadiene rubber (SBR) compounds. The sharkskin option consists of highly sensitive pressure transducers located inside a slit die of a capillary rheometer. This tool allows the detection of in-situ pressure fluctuation characteristics of different melt instabilities. It is shown that the change of slope of the transition region in the flow curves is only linked to slip. Dynamic Mechanical Analysis (DMA) measurements furthermore show that the shear rate at which the change of slope can be observed shows the same temperature dependency as the viscous and elastic properties of the compounds.</p></div></div>","PeriodicalId":755,"journal":{"name":"Rheologica Acta","volume":"62 1","pages":"15 - 30"},"PeriodicalIF":2.3000,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00397-022-01376-7.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rheologica Acta","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s00397-022-01376-7","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MECHANICS","Score":null,"Total":0}

引用次数: 0

Abstract

The flow curves of polymers often reveal the onset of melt instabilities such as sharkskin, stick–slip, or gross melt fracture, in order of increasing shear rates. The focus of this work lies in the application of the Göttfert sharkskin option to the investigation of flow curves of styrene-butadiene rubber (SBR) compounds. The sharkskin option consists of highly sensitive pressure transducers located inside a slit die of a capillary rheometer. This tool allows the detection of in-situ pressure fluctuation characteristics of different melt instabilities. It is shown that the change of slope of the transition region in the flow curves is only linked to slip. Dynamic Mechanical Analysis (DMA) measurements furthermore show that the shear rate at which the change of slope can be observed shows the same temperature dependency as the viscous and elastic properties of the compounds.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

二氧化硅填充丁苯橡胶化合物挤压过程中滑移起始和鲨鱼皮熔体不稳定性的实验分离

摘要聚合物的流动曲线通常显示熔体不稳定性的开始，如鲨鱼皮，粘滑或总体熔体断裂，按剪切速率增加的顺序。本工作的重点在于将Göttfert鲨鱼皮选项应用于丁苯橡胶(SBR)化合物的流动曲线研究。鲨皮选项由位于毛细管流变仪的狭缝模具内的高灵敏度压力传感器组成。该工具可以检测不同熔体不稳定性的现场压力波动特征。结果表明，流动曲线中过渡区斜率的变化只与滑移有关。动态力学分析(DMA)进一步表明，可以观察到斜率变化的剪切速率与化合物的粘性和弹性特性具有相同的温度依赖性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Rheologica Acta 物理-力学

CiteScore

4.60

自引率

8.70%

发文量

审稿时长

3 months

期刊介绍： "Rheologica Acta is the official journal of The European Society of Rheology. The aim of the journal is to advance the science of rheology, by publishing high quality peer reviewed articles, invited reviews and peer reviewed short communications. The Scope of Rheologica Acta includes: - Advances in rheometrical and rheo-physical techniques, rheo-optics, microrheology - Rheology of soft matter systems, including polymer melts and solutions, colloidal dispersions, cement, ceramics, glasses, gels, emulsions, surfactant systems, liquid crystals, biomaterials and food. - Rheology of Solids, chemo-rheology - Electro and magnetorheology - Theory of rheology - Non-Newtonian fluid mechanics, complex fluids in microfluidic devices and flow instabilities - Interfacial rheology Rheologica Acta aims to publish papers which represent a substantial advance in the field, mere data reports or incremental work will not be considered. Priority will be given to papers that are methodological in nature and are beneficial to a wide range of material classes. It should also be noted that the list of topics given above is meant to be representative, not exhaustive. The editors welcome feedback on the journal and suggestions for reviews and comments."

期刊最新文献

The complex rheological behavior of a simple yield stress fluid Orthogonal superposition rheometry of soft core–shell microgels Effect of urea on the linear and nonlinear rheological properties of human serum albumin hydrogels Swimming in viscoplastic fluids Discrepancies in dynamic yield stress measurements of cement pastes