The influence of porosity on mechanical properties of PURbased composites: Experimentally derived    mathematical approach

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dc.contributor.authorČerný, Miroslavcs
dc.contributor.authorPetruš, Josefcs
dc.contributor.authorChamradová, Ivanacs
dc.coverage.issue8cs
dc.coverage.volume15cs
dc.date.issued2023-04-20cs
dc.description.abstractThe work is focused on the mechanical behavior description of porous filled composites that is not based on simulations or exact physical models, including different assumptions and simplifications with further comparison with real behavior of materials with different extents of accordance. The proposed process begins by measurement and further fitting of data by spatial exponential function zc = zm center dot p(1)(b) center dot p(2)(c), where z(c)/z(m) is mechanical property value for composite/nonporous matrix, p(1)/p(2) are suitable dimensionless structural parameters (equal to 1 for nonporous matrix) and b/c are exponents ensuring the best fitting. The fitting is followed by interpolation of b and c, which are logarithmic variables based on the observed mechanical property value of nonporous matrix with additions of further properties of matrix in some cases. The work is dedicated to the utilization of further suitable pairs of structural parameters to one pair published earlier. The proposed mathematical approach was demonstrated for PUR/rubber composites with a wide range of rubber filling, various porosity, and different polyurethane matrices. The mechanical properties derived from tensile testing included elastic modulus, ultimate strength and strain, and energy need for ultimate strain achievement. The proposed relationships between structure/composition and mechanical behavior seem to be suitable for materials containing randomly shaped filler particles and voids and, therefore, could be universal (and also hold materials with less complicated microstructure) after potential following and more exact research.en
dc.formattextcs
dc.format.extent1-19cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPolymers. 2023, vol. 15, issue 8, p. 1-19.en
dc.identifier.doi10.3390/polym15081960cs
dc.identifier.issn2073-4360cs
dc.identifier.orcid0000-0002-2556-6778cs
dc.identifier.orcid0000-0002-7531-697Xcs
dc.identifier.orcid0000-0001-7927-946Xcs
dc.identifier.other183447cs
dc.identifier.researcheridAAB-8542-2019cs
dc.identifier.scopus57132513600cs
dc.identifier.urihttp://hdl.handle.net/11012/212509
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofPolymerscs
dc.relation.urihttps://www.mdpi.com/2073-4360/15/8/1960cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2073-4360/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectpolymer matrix compositeen
dc.subjectmechanical propertiesen
dc.subjectporosityen
dc.titleThe influence of porosity on mechanical properties of PURbased composites: Experimentally derived    mathematical approachen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-183447en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:38:26en
sync.item.modts2025.01.17 16:35:48en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé polymerní materiály a kompozitcs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé biomateriálycs
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