The Effect of Oligomeric Resins on Tire Traction of SBR/BR-Based Rubber Blends

Abstract:

Resin is a compounding ingredient that can be used in tire treads to improve (wet) grip resistance. Increasing tan delta in the temperature range between 0°C and 20°C is important to improve (wet) grip resistance. To understand the behavior of resins and determine which resin is best suitable to improve traction in SBR/BR blends, the solubility of polyterpene and α-methyl styrene resin in SBR-BR blends is investigated. The method for measuring the solubility of resin in SBR/BR blends at a 70/30 weight ratio was developed. The solubility parameters (δ) were calculated based on the group contribution method, and the Δδ values between resins and rubbers were correlated with the weight increase of lightly crosslinked SBR/BR blends at different temperatures. A smaller Δδ means higher solubility of the resin in the rubber, which is confirmed by the high level of resin uptake in the rubber. Based on the research, it was found that molecular weight, polarity, and temperature, are factors, which influence the solubility of resins into the rubber. In addition, based on the DMA measurements, SBR/BR (Ni-cat) containing polyterpene shows a higher tan delta at 0 – 20°C compared to SBR/BR (Nd-cat) containing polyterpene. This fact indicates that a correct selection between the type of rubber and resin is important depending on the requirement needed.

• Periodical: Advances in Science and Technology (Volume 141)
• Pages: 47-53
• DOI: https://doi.org/10.4028/p-SK0Hzu
• Online since: March 2024
• Authors: Indriasari Indriasari*, Suppachai Sattayanurak, Riastuti Fidyaningsih, Ade Sholeh Hidayat, Mahendra Anggaravidya, Dewi Kusuma Arti, Akhmad Amry, Wahyu Tri Utami, Idvan Idvan, Herri Susanto, Sri Rahayu, Muhammad Dikdik Gumelar, Mohamad Soleh Iskandar, Lies Agustine Wisojodharmo
• Keywords: Polyterpene, Resin, Rubber, SBR/BR, Solubility, α-Methyl Styrene

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