Effect of additives on the mechanical properties of polyvinyl chloride

Abstract EN

The effects of additives mainly plasticizer and filler on the mechanic-al properties of polyvinyl chloride (PVC) compounding is examined.

Two groups of samples were prepared with different plasticizer and filler content.

The first group is free of filler, while the second group, contained beside filler, plasticizer at concentration of 40 parts/100 resin.

The plasticizer content ranged from 21-32% by weight of sample.

The filler content ranged from 6-17%by weight of sample.

All samples contained stabilizer at concentration of 7 parts/100 resin.

Experimental results have shown that tensile strength decreased with increasing plasticizer content for the group of samples free of filler.

The trend is completely reversed in the group where the sample contained filler.

On the other hand, the elongation at break is inversely proportion to plasticizer content for the group free of filler, while it is directly proportion to plasticizer content for that containing filler.

Higher values of modulus of elasticity are obtained for the group of sample contained filler, but it is decreased with increased plasticizer and filler content.

Also higher values of the hardness number were obtained for the group free of filler, while it was decreased with increased plasticizer content for both groups.