Abstract:

While the functional compound Polycom JB 7100 is often introduced into polyolefins as a modifier, processing aid and bonding agent, little is known about its influence upon the basic structure and mechanical properties of composite tape yarns. Polycom JB 7100 is a master bath of inorganic materials and polyolefins. To show the effects of different amounts (0 - 6 wt%) of this additive in polypropylene (PP)-based composite tape yarns, experiments were made without changes to other additive portions and at constant process parameters. The linear composition-property relations showing the effects of portions of the variable component on the changes in morphology, geometrical properties and tensile behaviour were obtained. Tape yarns, in which a portion of PP was replaced by the functional compound Polycom JB 7100, had tensile properties about 2 - 9% lower than the yarns without this additive, whereas the values of width, thickness and linear density after applications of the additive were about 3 - 4% greater if compared with those of the basic sample.