The combination of montmorillonite and silica in styrene-butadiene rubber/polybutadiene rubber tread compounds

2015 ◽  
Vol 38 (5) ◽  
pp. 918-926 ◽  
Author(s):  
Zuguo Bao ◽  
Jie Tao ◽  
Cynthia Flanigan
Keyword(s):  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Polybutadiene Rubber ◽  
Styrene Butadiene

scholarly journals Experimental Investigation on the Use of Waste Elastomeric Polymers for Bitumen Modification

2020 ◽  
Vol 10 (8) ◽  
pp. 2671
Author(s):  
Sadegh Yeganeh ◽  
Mahmoud Ameri ◽  
Davide Dalmazzo ◽  
Ezio Santagata
Keyword(s):  
Permanent Deformation ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Waste Products ◽  
Expected Performance ◽  
Polybutadiene Rubber ◽  
Modified Binders ◽  
Experimental Findings ◽  
Styrene Butadiene ◽  
Bitumen Modification

The study described in this paper focused on the possible use of waste products coming from the production of styrene–butadiene rubber (SBR) and polybutadiene rubber (PBR), as bitumen modifiers. Modified binders containing these products were prepared in the laboratory with different polymer dosages and were thereafter subjected to the evaluation of empirical and rheological properties. For comparative purposes, the study also considered SBR and PBR products of premium quality. Ageing effects were also taken into account by means of proper laboratory simulations. Obtained results indicated that the two types of polymer (SBR and PBR) have completely different effects on the rheology and expected performance of the resulting modified binders. In particular, while the two polymers showed similar effects in terms of resistance to permanent deformation, the SBR products proved to be superior from the viewpoint of fatigue resistance. However, only minor differences were found when comparing the effects produced by premium quality and waste polymers. As a result of the experimental findings, it was concluded that the use of waste SBR polymers can be an attractive solution for the production of affordable modified binders.

Characterization of Natural Rubber (NR), Polybutadiene Rubber (BR) and Styrene-Butadiene Rubber (SBR) Blends Cured in a Vulcanization System

2021 ◽  
Vol 1039 ◽  
pp. 51-64
Author(s):  
Muhsin Jaber Jweeg ◽  
Zaid G.A. Al-Jlaihawi
Keyword(s):  
Tensile Strength ◽  
Carbon Black ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Maximum Value ◽  
Polybutadiene Rubber ◽  
Maximum Tensile Strain ◽  
Number Of Cycles ◽  
Styrene Butadiene

In this work, the mechanical properties of three types of dough rubber NR, NR/BR, and NR/SBR have been investigated using five percentages of materials fill (30, 40, 50, 60, and 70) pphr. Carbon black was used as a filler material. The tensile test was achieved with 300% elongation and strain rates of (100, 200, 300, 400, and 500) mm/min. The tensile strength results indicate that the maximum value of tensile strength for NR Dough carbon black 60 pphr reaches 23.2 MPa; the maximum tensile strain of NR dough (carbon black 50 pphr) reaches 805.5%, and the modulus of elasticity with carbon black 70 pphr reaches 4.3 MPa. It was found that the compression strength decreases with increasing the carbon black, and the maximum value of compression set at NR dough (carbon black 30 pphr) reaches 29.3%. Fatigue crack growth was achieved according to ASTM D 813 for rubber testing. The minimum value of fatigue strength dough (carbon black 70 pphr) reaches 68 (IRHD). For NR dough (carbon black 30,40,50 pphr) reaches 3.5 mm at the number of cycles 15000 cycle. Finally, the maximum hardness of NR.

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