Global Polytec Ltd.,Part.

PREPARATION AND PROPERTIES OF REVERSIBLY CROSSLINKED ISOTACTIC POLYPROPYLENE/CLAY NANOCOMPOSITES SAID BOUHELAL LMPMP, FACULTY OF ENGINEERING FERHAT ABBAS UNIVERSITY, SÉTIF, ARGELIA. New advances concerning the methodology employed to prepare nanocomposites of iPP and nanoclays are reported. Conventional (reactive melt mixing) and “in situ” preparations were performed, and the structural properties of the nanocomposites are discussed. Results suggest that the nanoclay exhibits a partial and, in some cases a total exfoliation within the composites. Adhesion between the polymeric matrix and the nanoclay layers is similar to that obtained after grafting. The analysis performed using the WAXS and DSC techniques permits to describe, at nano-scale level, the contribution of the nanoclay to the nanocomposite system. The microhardness values of the iPP-clay composites depend on the clay content and on the preparation method, and linearly correlate, according to the additivity law, with the degree of crystallinity. Any kind of industrial equipments can be used to perform the reactive melt processing, ie, injection molding, calendering, etc. In each processing method, the effective shearing produced on the composites is different. All the crosslinked samples show polymorphism. The -form, and its transformations during the heating process, are responsible for the melting behavior of the samples with 16-30 wt % of clay. The nanoclay content seems to affect the nanostructure and …

Film Insert Molding is a versatile and cost effective method of decorating and manufacturing plastic parts, best described as a method of In-Mold Decoration (IMD). The flat film is firstly reverse decorated (normally screen printed), then optionally formed, cut and finally back injection molded. With FIM you can easily integrate components such as lens and body into a single unit using just one piece of our formable hardcoated films.
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