The wollastonite with fibrous structure can be used as the filler in the composite. In this paper, the composite was prepared by incorporating the wollastonite into butadiene styrene rubber (SBR) matrix through the mechanical agitation and roll mixing technologies. Mechanical properties of SBR filled with different amount of wollastonite content were studied and compared. It was shown that the mechanical properties of SBR filled with wollastonite could be improved significantly. The tensile strength and elongation at break were increased with the increase of the wollastonite. The tensile strength could be enhanced from 4.1MPa to 5.0MPa, and the elongation at break from 389% to 572%.
The reclaimed rubber was used for many fields, but the mechanical properties especially elongation at break of reclaimed rubber couldn’t meet the requirement due to its recycle property. It was proved that the wollastonite with fibrous structure could improve the mechanical properties in many composite. In this study, the reclaimed rubber modified by wollastonite was prepared by the mechanical agitation and open roll mixing methods. The composite was characterized and tested after the renewed vulcanization, and the mechanical properties could be improved. It was observed from experimental data that the elongation at break could enhance from 238% to 300%. Moreover, the tensile strength could increase to some extent.
Carbon ash composed of mainly amorphous carbon and zinc oxide was used as the filler in the butadiene-styrene rubber (SBR) materials. In this paper, carbon ash was characterized by XRD. Furthermore, the composites were prepared by incorporating carbon ash into SBR matrix through the mechanical agitation and roll mixing technologies. Vulcanization characteristics and mechanical properties of SBR filled with carbon ash were investigated. The effect of coupling agent (KH550/KH570) on the mechanical properties was also discussed. The experimental results indicated that the tensile strength and modulus at 300% of SBR filled with carbon ash could be improved significantly.
Waste tire powder (WTP) was reclaimed mechanically in presence of a new composite additive which consists of reinforcing materials (RM) and toughening materials (TM), and the effects of technical parameters and additives were investigated. According to the orthogonal experiments and the range analysis, the final ranking of the significance of factors in tensile properties was determined to be as follows: TM content > curing temperature > sulfur content > TBBS content > RM content (for tensile strength) and sulfur content > curing temperature > TBBS content > TM content > RM content (for elongation at break). The optimal conditions for tensile strength and elongation at break were determined respectively. Tensile strength and elongation at break tended to decrease after an initial ascent with the RM content increased. An apparent ascent of elongation at break was observed as TM content increases. Tensile strength increased first, and then decreased.
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