In this work, two ternary polymer blends were prepared by mixing EP with (UP/PSR) and (PVC/PSR) respectively.
Different mixing ratios were used (5, 10, 15 and 20) wt.% of the added polymers. Impact, tensile, compression,
flexural and hardness tests were performed on the prepared blends. The results of testing showed that the first
ternary blend A (EP/UP/PSR) records tensile strength values higher than that of the second ternary blend B (EP/
PVC/PSR). At 20wt.% of mixing, the blend B records higher impact strength than that of the blend A. There is
large difference in the flexural behavior between A and B blends where the blend A records the highest value of
flexural strength (F.S) at (5wt.%) while the blend B records the highest value of (F.S) at (20wt.%). From
compression test, it is obvious that the values of compressive strength decrease of blend B more than that of the blend A as well as the same behavior can be obtained through the hardness test.
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