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The corrosion of metals is of great economic importance. Estimates show that the quarter of the iron and the steel produced is destroyed in this way. Rubber lining has been used for severe corrosion protection because NR and certain synthetic rubbers have a basic resistance to the very corrosive chemicals particularly acids. The present work includes producing ebonite from both natural and synthetic rubbers ; therefore, the following materials were chosen to produce ebonite rubber: a) Natural rubber (NR). b) Styrene butadiene rubber (SBR). c) Nitrile rubber (NBR). d) Neoprene rubber (CR) [WRT]. The best ebonite vulcanizates are obtained in the presence of 30 Pphr sulfur, and carbon black as reinforcing filler. The relation between the types of rubbers used alone or as blends was investigated and optimum formulations have been achieved. Blending of NR with SBR, NBR, and WRT enhances the mechanical properties. For the blend of NBR and SBR, the mechanical properties are enhanced with increasing the proportion of SBR in the blend. Blends of WRT with NR, SBR, and NBR enhance the mechanical properties of WRT compounds. The effect of chemical resistance on rubbers and blends were also studied.
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