RESEARCH OF INFLUENCE OF DISPERSION OF AN EXCIPIENT OF A PHYTOGENESIS ON PHYSICAL AND CHEMICAL AND RHEOLOGICAL BEHAVIOR OF COMPOSITIONS ON THE BASIS OF SECONDARY POLYPROPYLENE

Abstract

Now development and creation of polymeric composites is a serious scientific problem. Introduction of natural excipients to a polymeric matrix allows to create material with new properties. The nature of the entered excipient can affect set of physicomechanical and physical and chemical properties of composites. In work physicomechanical and rheological properties of compositions on the basis of secondary polymeric raw materials and filler of natural origin — a rice peel are studied. The sample of secondary polypropylene corresponding to primary polypropelene of the FF/3350 brand and a rice peel of various dispersion have been considered as objects of a research. Modeling of process of processing of polymeric materials carried out at the laboratory station (plastograf) of PlastographEC (Germany). Deformation and strength properties of material defined on the pressed samples of material 1 mm thick. Pressing was carried out on an automatic hydraulic press of AutoMH-NE (USA). Physicomechanical properties of polymeric composites at a gap defined by explosive ShimadzuAGS-X car (Japan) at a temperature of 20°C and speeds of the movement of mobile hijacking of the explosive car of 1 mm/min. Rheological measurements of polypropelene fusion and compositionally the filled materials on its basis carried out on a modular dynamic reometr of HaakeMarsIII at 220°C. It is established that introduction of filler leads to increase in size of torque, reduction of value of an indicator of fluidity of fusion, growth of dynamic viscosity of fusion, but is not followed by increase in elasticity. To increase in viscosity it is obviously connected with adsorption of polymer on the surface of filler. It is shown that during filling of secondary polypropylene minor change and deformation and strength properties of composition happens a rice peel. At introduction to composition up to 10 mass part a rice peel will allow to form the materials which aren’t conceding on the physicomechanical indicators to initial secondary polypropylene and capable at the same time to biodegradation. Besides the higher dispersion of filler, the all mentioned indicators change stronger.