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Journal of Rubber Research

, Volume 22, Issue 3, pp 127–132 | Cite as

Evolution of Payne effect of silica-filled natural rubber in curing process

  • J. Wu
  • L. Chen
  • B. L. SuEmail author
  • Y. S. Wang
Original Paper
  • 18 Downloads

Abstract

Vulcanisation is the key process for determining the final properties of elastomers due to the relationship between curing condition and viscoelastic behaviour. This study focuses on the variations in the dynamic behaviour of silica-filled natural rubber caused by crosslinking. The rubber samples with different degrees of curing (DOC) are prepared by thermal quenching during the crosslinking process. The strain sweep mode is used to study the Payne effect. The Kraus model is used to fit the test data. The relationship between the parameters of Kraus model and DOC is obtained at small strain (< 10%). The storage modulus at small strain amplitudes (usually < 0.01%) \( G^{\prime}_{ 0} \) is proportional to DOC; however, the storage modulus at large strain amplitudes \( G^{\prime}_{\infty } \) has small changes with DOC. The characteristic value of the strain amplitude \( \gamma_{\text{C}} \) shifts to large strain and the maximum loss modulus \( G^{\prime\prime}_{\text{m}} \) decreases with the increase of DOC. In addition, a deviation between Kraus model and experiment is observed when the strain is larger than 10%, and the loss modulus increases with the increase of strain amplitude. The deviation decreases when DOC increases. The mechanism for this deviation is discussed and the interaction between silica filler and rubber chain might be responsible for the observed deviation.

Keywords

Silica-filled nature rubber Payne effect Vulcanisation Crosslink density 

Notes

Acknowledgements

This work is funded by Major Program of National Natural Science Foundation of China (51790502), Shandong Provincial Natural Science Foundation Youth Program (ZR2018QEE004), and the joint construction project of HIT and Weihai (2017DXGJ01, 2017DXGJ11).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© The Malaysian Rubber Board 2019

Authors and Affiliations

  1. 1.Center for Rubber Composite Materials and StructuresHarbin Institute of TechnologyWeihaiPeople’s Republic of China
  2. 2.Center for Composite MaterialsHarbin Institute of TechnologyHarbinPeople’s Republic of China
  3. 3.Double Coin Group (Jiangsu) Tire Co., LtdRugaoPeople’s Republic of China

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