Online characterization of ambient temperature influence on die swell behavior of rubber compound

In this study, the influence of the ambient temperature in the range of 20–60 °C on the die swell behavior of rubber compound were studied by a capillary rheometer with new designed external heating device. The results demonstrated that the die swell ratio (B) increased rapidly in the initial phase...

Full description

Bibliographic Details
Main Authors: Zhongjin Du, Gerhard Ziegmann, Hongying Zhao, Shugao Zhao
Format: Article
Language:English
Published: Elsevier 2022-12-01
Series:Polymer Testing
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0142941822003087
_version_ 1797996693462974464
author Zhongjin Du
Gerhard Ziegmann
Hongying Zhao
Shugao Zhao
author_facet Zhongjin Du
Gerhard Ziegmann
Hongying Zhao
Shugao Zhao
author_sort Zhongjin Du
collection DOAJ
description In this study, the influence of the ambient temperature in the range of 20–60 °C on the die swell behavior of rubber compound were studied by a capillary rheometer with new designed external heating device. The results demonstrated that the die swell ratio (B) increased rapidly in the initial phase and reached a stable value after a certain time. The time dependence of B was then calculated based on the experimental data using Burger's model. In addition, it can be found that B was proportional to the ambient temperature of the extrudate, since the relaxation time decreased obviously with increasing ambient temperature. At the constant time of 130 min, B in the range of 20–60 °C were 1.393, 1.405, 1.420, 1.425 and 1.438 mm, respectively. Furthermore, an equation was established to describe the relationship among the B, test time and ambient temperature. The calculated value was consistent with experimental data, which was 1.447 and 1.449 mm, respectively. While the equation was not applicable when the ambient temperature lay above 70 °C due to the decreased interaction between rubber and carbon black. It was also found that the contraction effect played a significant role on the behavior of die swell. B of the extrudate under 60 °C and 70 °C was reduced by 1.5% and 1.2%, respectively.
first_indexed 2024-04-11T10:21:23Z
format Article
id doaj.art-5dfeb9b066dc4dcea97c403fe9784859
institution Directory Open Access Journal
issn 0142-9418
language English
last_indexed 2024-04-11T10:21:23Z
publishDate 2022-12-01
publisher Elsevier
record_format Article
series Polymer Testing
spelling doaj.art-5dfeb9b066dc4dcea97c403fe97848592022-12-22T04:29:44ZengElsevierPolymer Testing0142-94182022-12-01116107787Online characterization of ambient temperature influence on die swell behavior of rubber compoundZhongjin Du0Gerhard Ziegmann1Hongying Zhao2Shugao Zhao3Sino-German Institute for High Performance Materials and Technology, Qingdao University of Science and Technology, Qingdao, 266042, China; Institute of Polymer Materials and Plastics Engineering, TU Clausthal, Clausthal-Zellerfeld, 38678, GermanyInstitute of Polymer Materials and Plastics Engineering, TU Clausthal, Clausthal-Zellerfeld, 38678, GermanySino-German Institute for High Performance Materials and Technology, Qingdao University of Science and Technology, Qingdao, 266042, China; Chinese-German Faculty of Science and Technology, Qingdao University of Science and Technology, Qingdao, 266042, China; Corresponding author. Sino-German Institute for High Performance Materials and Technology, Qingdao University of Science and Technology, Qingdao, 266042, China.Sino-German Institute for High Performance Materials and Technology, Qingdao University of Science and Technology, Qingdao, 266042, China; Key Laboratory of Rubber-Plastics, Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science and Technology, Qingdao, 266042, ChinaIn this study, the influence of the ambient temperature in the range of 20–60 °C on the die swell behavior of rubber compound were studied by a capillary rheometer with new designed external heating device. The results demonstrated that the die swell ratio (B) increased rapidly in the initial phase and reached a stable value after a certain time. The time dependence of B was then calculated based on the experimental data using Burger's model. In addition, it can be found that B was proportional to the ambient temperature of the extrudate, since the relaxation time decreased obviously with increasing ambient temperature. At the constant time of 130 min, B in the range of 20–60 °C were 1.393, 1.405, 1.420, 1.425 and 1.438 mm, respectively. Furthermore, an equation was established to describe the relationship among the B, test time and ambient temperature. The calculated value was consistent with experimental data, which was 1.447 and 1.449 mm, respectively. While the equation was not applicable when the ambient temperature lay above 70 °C due to the decreased interaction between rubber and carbon black. It was also found that the contraction effect played a significant role on the behavior of die swell. B of the extrudate under 60 °C and 70 °C was reduced by 1.5% and 1.2%, respectively.http://www.sciencedirect.com/science/article/pii/S0142941822003087Rubber compoundDie swellAmbient temperatureOnline measurement
spellingShingle Zhongjin Du
Gerhard Ziegmann
Hongying Zhao
Shugao Zhao
Online characterization of ambient temperature influence on die swell behavior of rubber compound
Polymer Testing
Rubber compound
Die swell
Ambient temperature
Online measurement
title Online characterization of ambient temperature influence on die swell behavior of rubber compound
title_full Online characterization of ambient temperature influence on die swell behavior of rubber compound
title_fullStr Online characterization of ambient temperature influence on die swell behavior of rubber compound
title_full_unstemmed Online characterization of ambient temperature influence on die swell behavior of rubber compound
title_short Online characterization of ambient temperature influence on die swell behavior of rubber compound
title_sort online characterization of ambient temperature influence on die swell behavior of rubber compound
topic Rubber compound
Die swell
Ambient temperature
Online measurement
url http://www.sciencedirect.com/science/article/pii/S0142941822003087
work_keys_str_mv AT zhongjindu onlinecharacterizationofambienttemperatureinfluenceondieswellbehaviorofrubbercompound
AT gerhardziegmann onlinecharacterizationofambienttemperatureinfluenceondieswellbehaviorofrubbercompound
AT hongyingzhao onlinecharacterizationofambienttemperatureinfluenceondieswellbehaviorofrubbercompound
AT shugaozhao onlinecharacterizationofambienttemperatureinfluenceondieswellbehaviorofrubbercompound