Effect Of Eb On Performance Of Carborn Black And Rubber Filled With Irradition-Modified Carbon Black

More than 100 years. Carbon black particles (CBs) have been used in the rubber industry. As a material with reinforcing capacity, Carbon black play an important role in the tire industry. CB is made up of a turbostratic aggregation of very small graphene sheets which contain interesting defects called fullerene-like defects. These fullerene-like sites in carbon black act as free radical acceptor sites, which can attract the rubber-chain radicals formed by chain scission or hydrogen abstraction during the mixing process to form a thin layer called "bound rubber". The bound rubber has a strong interaction with CBs and cannot be separated from CBs even in some solvents for rubber. The rubber properties including mechanical and dynamical properties are correlated to the content of bound rubber around the CBs.Currently, surface grafting of fillers is a common chemical method to improve the properties of rubber for improving the interaction between the CBs and rubber molecules. For example, Sini and Arup prepared surface-modified carbon black (N330) by treating it with pentaerythitol and resorcinol. It was found that carbon black showed more pronounced effect. Ganguly et. al attempt to modify the surface chemistry of carbon black (N330) by the interaction with aromatic derivatives. Two aromatic polyhydroxy compounds, namely 1,2 dihydroxy benzene (catechol) and 1,2, 3 trihydroxy benzene (pyrogallol) are chosen as surface modifiers. The surface modified carbon black compounded with natural rubber later, The results indicate that there has been as enhancement of filler-polymer interaction with a reduction of filler-filler networking. But those modifying chemicals could not react with oxygen-containing functional groups or rubber molecules completely. The residual of surfactants is harmful to not only the environment, but also the rubber properties.Recently, irradiation of electron beam (EB) has been used in material modification and polymer processing. Shanmugharaj used EB irradiation to modify a dual-phase filler composed of carbon black N220 and white carbon black. The C/O ratio of the dual-phase filler by electron spectroscopy for chemical analysis (ESCA) increased. Evora and Klosterman used a high-energy electron beam to oxidize vapor-grown carbon nanofiber surfaces. The results showed that the O1s/C1s ratio increased by a factor of approximately 4 after the carbon nanofibers were irradiated at 3500 kGy. However, there are few reports that focus on the effect of EB treatment on the CBs and dynamic properties of the rubber filled with the irradiated CBs.In this study, the carbon blacks (N234, N330. N660, N990) was exposed to EB irradiation. The properties of the carbon blacks were investigated before and after EB irradiation. The irradiated CBs were then compounded with nature rubber (NR). The properties of the vulcanite, including rolling resistance, abrasion resistance, and wet-skid resistance, were studied.