Hecheng xiangjiao gongye (Aug 2023)

Formulation design and properties of high modulus natural rubber/cis-1,4-polybutadiene rubber/trans-1,4-poly(butadiene-co-isoprene) rubber blends

  • WANG Hao1,2,3, LI Lan-ge2,3, WANG Ri-guo2,3, LUAN Bo1,2

DOI
https://doi.org/10.19908/j.cnki.ISSN1000-1255.2023.04.0309
Journal volume & issue
Vol. 46, no. 4
pp. 309 – 312

Abstract

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The structure and properties of high modulus natural rubber (NR) / cis-1,4-polybutadiene rubber (BR) blends reinforced with carbon black and modified with trans-1,4-poly(butadiene-co-isoprene) rubber (TBIR) and low Mooney viscosity trans-1,4-poly(butadiene-co-isoprene) rubber (LTBIR) were investigated. The results showed that both of the TBIR and LTBIR could significantly improve the compatibility between NR and BR. Compared with NR/BR vulcanizates, the mechanical properties and resilience of high modulus NR/BR vulcanizates modified with TBIR and LTBIR with reducing 4 phr (mass) carbon black were improved, wear volume reduced by 13%, compression heat generation reduced by 10%, rolling resistance reduced by 20%, first-grade flex fatigue life improved by about 1.6 times, and sixth-grade flex fatigue life improved by about 1.1 times.

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