NEW POLY(VINYL CHLORIDE) BLENDS .3. PHYSICOMECHANICAL PROPERTIES

The concurrent influence of the processing aid (Paraloid K 120N) and t he carbon black ratio, as well as the nature and the ratio of the impa ct modifier (CPE 3615 and Kane Ace B56 A) on the main physico-mechanic al characteristics of the poly(vinyl chloride)-based unplasticized mix tures have been studied. The results obtained, processed mathematicall y and plotted graphically in the form of response surfaces, evidenced that the improvement of certain physico-mechanical properties becomes possible by the introduction of 2.5 parts and 5.0 parts carbon black i nto these compounds. This is due to the introduction of impact modifie rs and processing aids into the mixtures.