The Effects of Silica/Carbon Black Ratio on the Dynamic Properties of the Tread compounds in Truck Tires

NR is the major constituent in the rubber compound used for the tread on the truck tires. A general compound formulation of the tire tread includes NR and BR as polymer base and carbon black as the reinforcing filler, and curative components. In this paper the effects of dual filler system (carbon black and precipitated silica) on the dynamic properties of tire treat has been studied. The results show by increasing of precipitated silica, significant improvement was observed in fatigue resistance, rolling resistance and heat buildup of the tire. Tensile strength and modulus and wet grip of tire tread decrease with increasing of silica in rubber compound formulation

The Effects of Silica/Carbon Black Ratio on the Dynamic Properties of the Tread compounds in Truck Tires

NR is the major constituent in the rubber compound used for the tread on the truck tires. A general compound formulation of the tire tread includes NR and BR as polymer base and carbon black as the reinforcing filler, and curative components. In this paper the effects of dual filler system (carbon black and precipitated silica) on the dynamic properties of tire treat has been studied. The results show by increasing of precipitated silica, significant improvement was observed in fatigue resistance, rolling resistance and heat buildup of the tire. Tensile strength and modulus and wet grip of tire tread decrease with increasing of silica in rubber compound formulation

A Novel method for Synthesis of Modified Nanofiber with Functionalized Mesopouros by Electrospinning for Removal of Dye(Direct Yellow 12 (D.Y.12))

The purpose of this study is to consider and compare applicability of modified chitosan nano fibers with functionalized mesoporous silica in Elecrtrospinning method for Direct Yellow 12 (D.Y.12) removal from aqueous solutions. Provided nano fibers were monitored and detected by TEM, Fe-SEM, XRD, FT-IR devices and Tensile testing. Subsequently, the effect of different operating parameters was achieving optimum condition for performing the adsorption process: such as nano adsorbent types, adsorbent dose, pH, initial dye concentration, contact time. And ultimately, finding suitable isotherms for adsorption of D.Y.12 was performed. Desirable conditions for removing by mesoporous silica chitosan nano fibers with SBA-15-NH2 adsorbent in 40 minutes contact, pH=2, the amount of adsorbent was 0.05 gr with 20 mg/l initial concentration. Also, the results have shown that D.Y.12 removal is following Langmuir and Freundlich isotherm model. The conclusions of this investigation have shown that CTS/SBA-15-NH2 nano fibers adsorb the D.Y.12 effectively and has great potential for purification of infected waste water with dyes