Studies on Aging Behavior and Degradation Mechanism of Raw EPDM Rubber Under γ-Ray Irradiation

Authors

  • Du Xin-yi "Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China" & "Changyi Senhui New Materials Co., Ltd., Weifang 261300, China"
  • Jiang Sheng-nan Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China
  • Zhao Qing "Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China" & "Changyi Senhui New Materials Co., Ltd., Weifang 261300, China"
  • Zhu Meng-yuan "Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China" & "Changyi Senhui New Materials Co., Ltd., Weifang 261300, China"
  • Wang Hong-zhen Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China
  • Wang Cun-guo "Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China" & "Changyi Senhui New Materials Co., Ltd., Weifang 261300, China"
  • He Ai-hua Shandong Province Key Laboratory of Olefin Catalysis and Polymerization, Key Lab. of Rubber-plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China
  • Ye Xin Changyi Senhui New Materials Co., Ltd., Weifang 261300, China
  • Zhao Bo Changyi Senhui New Materials Co., Ltd., Weifang 261300, China

DOI:

https://doi.org/10.12974/2311-8717.2023.11.04

Keywords:

EPDM rubber, Aging mechanism, γ-rays, Degradation, Mooney viscosity

Abstract

The aging behavior and mechanism of EPDM rubber were investigated by conducting different doses of γ-rays irradiation in raw EPDM rubber. A series of characterization methods such as Mooney viscosity, molecular weight and its distribution, rubber processing analysis, infrared spectroscopy analysis et al. were carried out. Structure and modifications of the raw EPDM rubber were tested under different irradiation doses. The results showed that the Mooney viscosity and molecular weight of EPDM rubber showed a significant decrease with increasing irradiation dose. The gel content and glass transition temperature increased gradually. As strain rose, the energy storage modulus diminished. The loss factor decreased at first and then increased with increasing strain during irradiation aging.

References

Huang W. Preparation And Characterization of Gamma-Ray Radiation Shielding PbWO4/EPDM Composite. Journal of Radioanalytical and Nuclear Chemistry, 2016; 309(03): 101-103. https://doi.org/10.1007/s10967-016-4713-9

Zaharescu T. Evaluation of Thermal And Radiation Stability of EPDM in The Presence of Some Algal Powders [J]. Journal of Thermal Analysis and Calorimetry, 2022; 147(01): 327-362. https://doi.org/10.1007/s10973-020-10319-4

Wang S Q, Wang C G, He A H. Accelerated Aging Behavior And Degradation Mechanism of Nitrile Rubber in Thermal Air And Hydraulic Oil Environments. Journal of Polymer Engineering & Science, 2023; 63(7): 2218-2232. https://doi.org/10.1002/pen.26371

Sharma B K. Gamma radiation aging of EVA/EPDM blends: Effect of vinyl acetate (VA) content and radiation dose on the alteration in mechanical, thermal, and morphological behavior [J]. Journal of Applied Polymer Science; 2018; 135(18): 1-7. https://doi.org/10.1002/app.46216

Wang S Q, Wang C G, He A H. Insights Into The Effects of High-Temperature Lubricating Oils on The Aging Behavior And Degradation Mechanism of Fluoroelastomers. Journal of Polymer Engineering & Science, 2023; 63: 1-15. https://doi.org/10.1002/pen.26382

Ozdemir T. Gamma Irradiation Degradation/Modification of 5-Ethylidene 2-Norbornene (ENB)-Based Ethylene Propylene Diene Rubber (EPDM) Depending on ENB Content of EPDM And Type/Content of Peroxides Used in Vulcanization. Radiation Physics and Chemistry, 2008; 77(06): 787-793. https://doi.org/10.1016/j.radphyschem.2007.12.010

Rivaton A, Cambon S, Gardette J L. Radiochemical Ageing of Ethylene-Propylene-Diene Elastomers [J]. Polymer Degradation & Stability, 2006; 91(1): 136-143. https://doi.org/10.1016/j.polymdegradstab.2005.04.018

Planes E, Chazeau L, Vigier G. Role of Temperature During Ageing Under Gamma Irradiation of Filled EPDM: Consequences on Mechanical Properties [J]. Journal of Polymer Science Part B-Polymer Physics, 2010; 48(12): 1319-1328. https://doi.org/10.1002/polb.22030

Zaharescu T, Jipa S. Evaluation of radiochemical effects in ethylene-propylene elastomers [J]. Polymer Testing, 1997; 16(2): 107-113. https://doi.org/10.1016/S0142-9418(96)00028-1

Deepalaxmi R, Rajini V. Property Enhancement of SiR-EPDM Blend Using Electron Beam Irradiation [J]. Journal of Electrical Engineering & Technology, 2014; 9(3): 984-990. https://doi.org/10.5370/JEET.2014.9.3.984

Downloads

Published

2023-12-12

How to Cite

Xin-yi, D. ., Sheng-nan, J. ., Qing, Z. ., Meng-yuan, Z. ., Hong-zhen, W. ., Cun-guo, W. ., Ai-hua, H. ., Xin, Y. ., & Bo, Z. . (2023). Studies on Aging Behavior and Degradation Mechanism of Raw EPDM Rubber Under γ-Ray Irradiation. Journal of Composites and Biodegradable Polymers, 11, 29–33. https://doi.org/10.12974/2311-8717.2023.11.04

Issue

Vol. 11 (2023)

Section

Articles