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Wpływ parametrów przetwórstwa na właściwości fizyczne kompozytów polipropylen/poliamid z zastosowaniem jako napełniacza poliwinylopirolidonu

Gnatowski A., Suberlak O., Koszkul J.

Kompozyty

2006

R. 6, nr 4

66-70

Przedstawiono wyniki badań właściwości kompozytów poliamid/polipropylen z dodatkiem jako napełniacza poliwinylo-pirolidonu w postaci proszku. Przeprowadzono badania wpływu parametrów przetwórstwa metodą wtryskiwania na właściwości sporządzonych kompozytów. Tworzywa polimerowe wyjściowe do sporządzenia mieszanin stanowiły: poliamid 6 oraz polipropylen. Badania przeprowadzono na próbkach kompozytów o następującym składzie: 98%[PP70%/PA30%] + 2%PWP, 98%[PP50%/PA50%] + 2%PWP, 98%[PP30%/PA70%] + 2%PWP. Określono wpływ parametrów przetwórstwa na takie właściwości badanych kompozytów, jak: twardość, udarność, granica plastyczności, naprężenie przy zerwaniu, odkształcenie przy zerwaniu, temperatura mięknienia wg Vicata.

The results of investigations of properties PP/PA composites with addition of polymer about ability of creating of physical bonds from polymer matrix were presented. Polyvinylpyrrolidone (PVP) about small molecular pulp (12 š2 ths.) in this aim was put-upon. The functionalactive material was prepared about sharp tuning sorption ability across physical modification polycapramide mixed from bipolar polyvinylpyrrolidone in batch - free state, which be characterizes high ability complex. The properties of the polymer composites depend significantly on the type of the components and also on the mixing method including the order of the components adding. That kind of influence manifests especially in the change of the physical properties. The basis condition for reaching the homogeneity, specific structure and the properties of a polymer material is its mutual miscibility of the polymers. Additional agents that make mixing easier are usually applied; they have reactive effect which results in a chemical modification of output polymer along with the change in its chemical structure and the structure of macrochains. In order to achieve this, the polyvinylpyrrolidone has been used. Within the work some results of chosen properties of PP and PA and PP/PA composites with different percentage composition with the addition of polyvinylpyrrolidone (PVP) have been presented. During plasticizing mixing among PA6 and PWP form hydrogen bonds, causing easy mixing from PP. It is possible to foresee, that under the influences large tangent stresses and intermolecular interaction colloidal solution PVP in PA forms about sure homogeneity, after cooling which does not the inversion of winding phases. Large intermolecular influence among PVP and PA6 are unquestionable with regard on their chemical building. The probability of influence of intermolecular influences with this reason results, the leaders to creation of new centres of crystallization near cooling the polymer material. On result intermolecular influences among PA6 and PVP decrease polarity in figure of hydrogen bonds follows both polymers which facilitates miscibility modified in such way of polyamide from water-repellent, non-polar polypropylene. The investigations for the influence of the fillers on the properties of prepared composites and conditions of the moulding injection have been conducted. It the influence of content of components and conditions of the moulding injection was established was, in this and PVP on mechanical properties (Table 1) and physical properties produced composites (Figs 1-3). Received however results show thereon that PP/PA composites with PVP additions create more stable material.