Polypropylene/Chemical Blowing Agent Foams: Effect of the Injection Speed and Core Back Distance on Microstructure and Mechanical Properties

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dc.contributor.authorAkkoyun, Meral
dc.contributor.authorBadem, İbrahim
dc.contributor.authorÖztoksoy, Mert Emre
dc.contributor.authorAslan, Yeşim
dc.date.accessioned2026-02-08T15:05:20Z
dc.date.available2026-02-08T15:05:20Z
dc.date.issued2020
dc.departmentBursa Teknik Üniversitesi
dc.description172L09
dc.description.abstractIn recent years, many parts of the automotive industry, previously made of metal, has been passed to polymers due to their light weight, ie lower carbon emission and fuel consumption advantage. The aim of this work was to investigate the microstructure and mechanical properties of chemical foaming agent added polypropylene foam samples produced by injection molding. In particular, the effects of injection speed and core back distance on the evolution of cell diameter, compact outer layer thickness, cell density and mechanical properties were examined. In the first step the effect of various injection speeds (110; 125; 140 mm/s) was investigated. Then, various core back positions (0; 0.7 and 1.5 mm) were analyzed at a constant injection speed (110 mm/s). The results showed an increase of the cell diameter, the compact outer layer thickness and the elastic modulus as the injection speed increases. In addition, an important effect of the core back distance was observed with the presence of a critical core back distance. Below this critical value, the cell diameter and the elastic modulus drop due to a notable decrease of the skin layer thickness. Above this critical value, the cells started to collapse and lose their circularity.
dc.description.sponsorshipThe Scientific Research Projects Units of Bursa Technical University
dc.identifier.doi10.29137/umagd.711692
dc.identifier.endpage647
dc.identifier.issn1308-5506
dc.identifier.issn1308-5514
dc.identifier.issue2
dc.identifier.startpage638
dc.identifier.trdizinid405675
dc.identifier.urihttps://doi.org/10.29137/umagd.711692
dc.identifier.urihttps://hdl.handle.net/20.500.12885/4568
dc.identifier.volume12
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherKırıkkale Üniversitesi
dc.relation.ispartofUluslararası Mühendislik Araştırma ve Geliştirme Dergisi
dc.relation.ispartofInternational Journal of Engineering Research and Development
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_DergiPark_20260207
dc.subjectEngineering
dc.subjectMühendislik
dc.titlePolypropylene/Chemical Blowing Agent Foams: Effect of the Injection Speed and Core Back Distance on Microstructure and Mechanical Properties
dc.typeArticle

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