20.500.12556/RUL-105928 Flow characteristics of highly filled polymers for powder injection molding Powder Injection Molding (PIM) is a 4-step manufacturing procedure for making ceramic or metallic components. It enables production of very small and precisely made components and is therefore ideal for gear production. The production process starts with compounding thermoplastic polymer and metallic or ceramic powder to form a highly-filled composite or feedstock. Feedstock is used to produce green part, usually with injection molding. In following steps, the polymeric components are removed in the debinding step and the final components are obtained by sintering. The rheological behaviour of these feedstocks is crucial for the manufacturing process and final properties of gears. The flow properties of feedstock material depend on several factors: the amount of fillers in the polymer, the particle size distribution and shape of particles, the nature of the filler and the polymer matrix, and the use of coupling agents. Within this paper we investigate the effects of the nature of fillers with similar size distribution on the rheological behaviour of feedstocks. The fillers with different densities and particle surface were compounded with a polymer/wax binder system with three different powder loadings. Rheological measurements showed that there are significant differences between feedstocks behaviour and this should be considered at the manufacturing stage. highly filled composites powder injection molding melt flow rheological properties particle size distribution powder loading polimeri z visoko stopnjo polnjenja brizganje prahov tok taline reološke lastnosti porazdelitev velikosti delcev true false true Angleški jezik Slovenski jezik Neznano 2018-12-24 10:11:01 2018-12-24 10:11:04 2022-08-18 03:46:53 0000-00-00 00:00:00 2018 0 0 Datoteka Session VI/6_BEK et al._Flow characteristics ... (5 f.) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.135+678(045)(0.034.2PDF) 16264731 16264475 RAZ_Bek_Marko_i2018.pdf RAZ_Bek_Marko_i2018.pdf 1 994F7ACD8E28FD8845BBC8F124F65FB1 8df47cc57866069addcdabc881d4135c56a4b5a3057a8bba2d70b5da2f985c17 3dfe23ce-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116624 Fakulteta za strojništvo 0 0 0