Carbon black reinforced natural rubber/butadiene rubber and natural rubber/butadiene rubber/styrene-butadiene rubber composites: Part II. Dynamic mechanical properties and fatigue behavior

BURGAZ E., Gencoglu O., Goksuzoglu M.

Research on Engineering Structures and Materials, cilt.5, sa.3, ss.1-13, 2019 (Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 5 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.17515/resm2109.75ma1124
  • Dergi Adı: Research on Engineering Structures and Materials
  • Derginin Tarandığı İndeksler: Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.1-13
  • Anahtar Kelimeler: Butadiene rubber, Carbon black reinforced rubber composite, Dynamic mechanical properties, Fatigue strength, Natural rubber, Styrene-butadiene rubber
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

Carbon black reinforced natural rubber (NR)/butadiene rubber (BR), NR/styrene-butadiene rubber (SBR) and NR/BR/SBR composites were prepared by using two types of BR with highly linear chain structure (higher viscosity and molecular weight) and branched chain structure (lower viscosity and molecular weight). NR/BR composite consisting of BR with higher viscosity has the highest fatigue strength. Damping factors of NR, NR/SBR and NR/BR/SBR composites as a function of frequency were systematically compared at constant temperatures of -40, 0, 25 and 60̊C. Based on dynamic mechanical analysis (DMA) results, the elasticity of NR/carbon black composite improves, its heat buildup character and tan δ decreases with the addition of BR. The addition of 20 phr BR to NR/SBR composites provides 4-5 times better fatigue strength due to the decrease of tan δ. Lastly, using a higher viscosity BR in carbon black filled NR or NR/SBR is quite favorable in terms of using these composites as anti-vibrational rubber bushings in automotive applications where high fatigue resistance and lower damping factor are important criteria.