Sliding Wear of Polymer – Steel Pairings regarding Flame Retardant Equipped Glass Fibre Reinforced Polymers and (coated) tool steels

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Abstract

The processing of reinforced polymeric materials which are equipped with a flame retardant can cause wear at the plasticating screw, in the mold or in the die. This work deals with tribological long-term tests of 30 wt% glass fiber (GF) reinforced Polypropylene (PP) (PP GF30) as well as 30 wt% GF reinforced and flame retardant (FR) equipped PP (PP GF30FR15) against discs of screw and mold materials (1.2311, 1.2343 and1.8550) and three different physical-vapor-deposited coatings (TiN, TiAlN and CrN, all applied on 1.2343). The tribological measurements were performed utilizing a Pin-on-Disc tribometer and injection mold-ed polymeric pins. The coefficient of friction (COF) is between 0.1 – 0.4. During the experiments the surfaces of almost all discs were roughened or worn. Especially the experiments with the glass fiber reinforced and flame retardant equipped PP pins resulted in a worn surface of all used steel surfaces. The TiN and the TiAlN coated surfaces featured the lowest COF, but both coatings were worn by both modifications. A transfer of material from the coated surface to the pin is shown by EDX measurements. The CrN coating, the nitrided steel and the hot working steel showed the least wear.
Translated title of the contributionSliding Wear of Polymer – Steel Pairings regarding Flame Retardant Equipped Glass Fibre Reinforced Polymers and (coated) tool steels
Original languageGerman
Title of host publicationPMI 2016 Proceedings of the International Conference on Polymers and Moulds Innovations
Publication statusPublished - 2016
EventPMI 2016: International Conference on Polymers and Moulds Innovations - Gent, Austria
Duration: 21 Sep 201623 Sep 2016
http://www.pmi2016.ccg.pt/index.html

Conference

ConferencePMI 2016: International Conference on Polymers and Moulds Innovations
CountryAustria
CityGent
Period21.09.201623.09.2016
Internet address

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