Improving Mechanical Properties and Thermal Conductivity of Styrene-Butadiene Rubber via Enhancing Interfacial Interaction Between Rubber and Graphene Oxide/Carbon Nanotubes Hybrid

2019 ◽  
Vol 27 (11) ◽  
pp. 1136-1143 ◽  
Author(s):  
Zhenghua Qian ◽  
Jianan Song ◽  
Zijin Liu ◽  
Zonglin Peng
2012 ◽  
Vol 430-432 ◽  
pp. 1076-1080
Author(s):  
Mei Chun Li ◽  
Xin Ge ◽  
Jong Hyuk Lim ◽  
Min Su Kim ◽  
Ur Ryong Cho

Starch/Styrene Butadiene Rubber (SBR) biocomposites were prepared by directly blending of starch and SBR on a two-roll miller. Two types of starch: pure starch and modified starch (M-starch) were used as rubber fillers. M-starch were synthesized by grafting of methyl methacrylate (MMA) monomer onto starch backbone using ceric ammonium nitrate-initiated radical polymerization. Coupling agent styrene-g-(maleic anhydride) (SMA) was used to further improve the interfacial interaction between the filler and rubber matrix. The morphology and mechanical properties of unmodified starch/SBR and M-starch/SBR biocomposites with SMA content of 0, 1, 3, and 5 phr were investigated. SEM observations showed the particle size of M-starch decreased and their dispersion in the SBR matrix significantly improved than unmodified starch. Mechanical properties of M-starch/SBR biocomposites were superior than those of unmodified starch/SBR biocomposites.


2017 ◽  
Vol 44 (3) ◽  
pp. 25-30
Author(s):  
R.R. Batrshina ◽  
A.M. Mokhnatkin ◽  
V.P. Dorozhkin ◽  
E.G. Mokhnatkina ◽  
V.E. Muradyan ◽  
...  

The processing and mechanical properties of green and vulcanised tread rubbers based on styrene butadiene rubber and polybutadiene with the addition of natural rubbers filled with silica and containing single-walled carbon nanotubes (SCNTs) were studied. Two types of rubber were manufactured: one containing untreated SCNTs and stearic acid, ensuring the presence of – COOH groups, and the other with treated SCNTs. The properties of these composites were compared. In both cases, the introduction of SCNTs leads to an increase in the cohesion strength of the green rubber mixes, to an improvement in their vulcanisation properties, and to an increase in their Mooney viscosity. In contrast to tread rubbers filled with carbon black, in the case of filling with silica the Payne effect decreases. The dynamic and other mechanical properties of the vulcanisates change in different ways. The wear resistance, like other service properties, is improved.


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