Modifying Effect of Metallic Powder Fillers

Abstract

Industry produces many types and varieties of polymers. Often, however, materials with superior processing and functional properties are needed. Their increased diversity or novel properties can be obtained through chemical and physical modification of polymers, reactive processing or preparation of compositions. The article presents an analysis of mechanical and processing properties of products of polypropylene filled with metallic powder fillers, obtained with constant processing parameters. Samples of polypropylene were subjected to uniaxial stretching by a strength testing machine. Changes in the maximum tensile stress and strain depending on the different content of the metallic filler. Hardness and impact strength of the samples obtained from the injection moulded product were determined and changes in melt flow rate (MFR) were examined. We used five metal powder fillers: aluminium, zinc, tin, iron and copper powders, with their contents ranging from 2.5 to 15 wt% relative to a polypropylene matrix composite material. Based on the results of research, the appropriate dependencies of different types of powder metal fillers on the mass content were prepared.

Characterization of Mechanical and Electrical Properties of Polystyrene Composite Reinforced by Hybrid Reinforcement Filler

“…Tables 2 and 3 illustrate the mixture ratios; Group A was utilized for filler powder, whereas Group B was used for short and powdery wire. It is worth to mention that it has been documented that adding metals fillers in powder forms such as Zn and Sn powder could increase the polymer-based composite's electrical conductivity due to their good electrical properties, these materials could be dispersed in the matrix [18,19]. Therefore, in this current work an assumption has been made by including these types of metals powder with weight fraction from 10 to 25% in relation to the polymer matrix.…”

Influence of Iron-Based Powder Additive on a Shape Accuracy of Injection Moulded Parts

“…Polymer composites occupy a unique position among the materials experiencing the most rapid expansion in the plastics sector. These materials are widely used in a variety of industries, including automotive, construction, packaging, and other applications [1,2].…”