Influence of process parameters of a continuous final mixer on the properties of carbon black/rubber composites

Kongshuo Wang; Deshang Han; Xinxin Xiao; Luyin Wang; Guangzhi Niu; Shoufeng Zhang; Chuansheng Wang; Huiguang Bian

doi:10.1515/ipp-2022-4265

Article

Influence of process parameters of a continuous final mixer on the properties of carbon black/rubber composites

Kongshuo Wang , Deshang Han , Xinxin Xiao , Luyin Wang , Guangzhi Niu , Shoufeng Zhang , Chuansheng Wang and Huiguang Bian

Published/Copyright: December 15, 2022

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From the journal International Polymer Processing Volume 38 Issue 2

Abstract

As the final stage of the mixing process, the final mixing has a profound impact on the properties of rubber compounds. The influence of the process parameters of a continuous final mixer on the properties of carbon black/rubber composites is studied. It is found that there are two factors affecting the performance of the composite: the rotating speed of the dual rotors and the temperature of the continuous final mixer. When the temperature is unchanged, the extruding temperature of the final-mixing rubber compound increases with increasing rotating speed, and the Mooney viscosity, T10, T90 and rolling resistance gradually decrease. The Payne effect decreases first and then increases, and the overall trend gradually decreases. When the rotating speed is constant, as the temperature of the continuous final mixer rises, the extruding temperature also rises, and the temperature difference between feeding and extruding increases. Mooney viscosity and tensile strength increase. The Payne effect is more significant. T10, T90 and rolling resistance gradually decrease. The M300 of a vulcanized sample shows the following laws: When the control temperature is low, the influence of rotational speed is small, the fluctuation range is small, and has a steady rising trend; however, when the temperature is higher, M300 fluctuates greatly under the influence of rotational speed. The optimal process parameters of the rubber continuous final mixer are determined: the double rotor speed is 30RPM, and the temperature control temperature is 60–70 °C.

Keywords: carbon black/rubber composite; continuous final mixer; final mixing; process parameters

Corresponding authors: Chuansheng Wang and Huiguang Bian, National Engineering Laboratory of Advanced Tire Equipment and Key Materials, Qingdao University of Science and Technology, Qingdao, Shandong Province, 266061, P. R. China; Shandong Key Laboratory of Advanced Manufacturing of Polymer Materials, Qingdao, Shandong Province, 266061, P. R. China; and School of Mechatronics Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266061, P. R. China, E-mail: wangchuanshengwks@163.com (C. Wang) and bianhuiguang@163.com (H. Bian)

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: 52173101

Funding source: Natural Science Foundation of Shandong Province

Award Identifier / Grant number: ZR2020KE037

Funding source: Key Technology and Equipment for Intelligent Green Manufacturing of Rubber Products

Award Identifier / Grant number: ZR2016XJ003

Funding source: Natural Science Foundation of Shandong Province

Award Identifier / Grant number: ZR2019BEE056

Funding source: Shandong Provincial Natural Science Foundation

Award Identifier / Grant number: ZR2020QE20

Acknowledgments

The authors would like to thank the Shandong Provincial Key Laboratory of Polymer Material Advanced Manufacturing Technology for their support in this experiment.

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This research was funded by National Natural Science Foundation of China (52173101); Naturtal Science Foundation of Shandong Province (ZR2020KE037); Key Technology and Equipment for Intelligent Green Manufacturing of Rubber Products, grant number ZR2016XJ003; Natural Science Foundation of Shandong Province, grant number ZR2019BEE056; Shandong Provincial Natural Science Foundation, grant number ZR2020QE207.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-08-09

Accepted: 2022-11-17

Published Online: 2022-12-15

Published in Print: 2023-05-25

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https://doi.org/10.1515/ipp-2022-4265

Keywords for this article

carbon black/rubber composite; continuous final mixer; final mixing; process parameters