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Influence of Different Hot Runner-Systems in the Injection Molding Process on the Structural and Mechanical Properties of Regenerated Cellulose Fiber Reinforced Polypropylene

dc.date.accessioned2023-07-27T12:09:22Z
dc.date.available2023-07-27T12:09:22Z
dc.date.issued2023-04-18
dc.identifierdoi:10.17170/kobra-202307278508
dc.identifier.urihttp://hdl.handle.net/123456789/14939
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kassel
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectviscose fibereng
dc.subjectnatural fiber compositeseng
dc.subjecthot runner systemeng
dc.subjectinjection moldingeng
dc.subjectfiber lengtheng
dc.subjectfiber orientationeng
dc.subjectX-ray microtomography analysise
dc.subjectmechanical propertieseng
dc.subjectdynamic image analysiseng
dc.subject.ddc600
dc.titleInfluence of Different Hot Runner-Systems in the Injection Molding Process on the Structural and Mechanical Properties of Regenerated Cellulose Fiber Reinforced Polypropyleneeng
dc.typeAufsatz
dcterms.abstractThe increasing demand for renewable raw materials and lightweight composites leads to an increasing request for natural fiber composites (NFC) in series production. In order to be able to use NFC competitively, they must also be processable with hot runner systems in injection molding series production. For this reason, the influences of two hot runner systems on the structural and mechanical properties of Polypropylene with 20 wt.% regenerated cellulose fibers (RCF) were investigated. Therefore, the material was processed into test specimens using two different hot runner systems (open and valve gate) and six different process settings. The tensile tests carried out showed very good strength for both hot runner systems, which were max. 20% below the reference specimen processed with a cold runner and, however, significantly influenced by the different parameter settings. Fiber length measurements with the dynamic image analysis showed approx. 20% lower median values of GF and 5% lower of RCF through the processing with both hot runner systems compared to the reference, although the influence of the parameter settings was small. The X-ray microtomography performed on the open hot runner samples showed the influences of the parameter settings on the fiber orientation. In summary, it was shown that RCF composites can be processed with different hot runner systems in a wide process window. Nevertheless, the specimens of the setting with the lowest applied thermal load showed the best mechanical properties for both hot runner systems. It was furthermore shown that the resulting mechanical properties of the composites are not only due to one structural property (fiber length, orientation, or thermally induced changes in fiber properties) but are based on a combination of several material- and process-related properties.eng
dcterms.accessRightsopen access
dcterms.creatorZarges, Jan-Christoph
dcterms.creatorSchlink, André
dcterms.creatorLins, Fabian
dcterms.creatorEssinger, Jörg
dcterms.creatorSommer, Stefan
dcterms.creatorHeim, Hans-Peter
dcterms.extent19 Seiten
dc.relation.doidoi:10.3390/polym15081924
dc.subject.swdViskoseger
dc.subject.swdVerbundwerkstoffger
dc.subject.swdBildanalyseger
dc.subject.swdMechanische Eigenschaftger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:2073-4360
dcterms.source.issueIssue 8
dcterms.source.journalPolymerseng
dcterms.source.volumeVolume 15
kup.iskupfalse
dcterms.source.articlenumber1924


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