dc.contributor.author | Kairytė, Agnė | |
dc.contributor.author | Członka, Sylwia | |
dc.contributor.author | Boris, Renata | |
dc.contributor.author | Vėjelis, Sigitas | |
dc.date.accessioned | 2023-09-18T16:09:18Z | |
dc.date.available | 2023-09-18T16:09:18Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 1996-1944 | |
dc.identifier.uri | https://etalpykla.vilniustech.lt/handle/123456789/111884 | |
dc.description.abstract | The study analyses rigid polyurethane (PUR) foam modified with 10–30 wt.% sunflower press cake (SFP) and liquid glass-impregnated sunflower press cake (LG-SFP) particles and their impact on performance characteristics of PUR foams—foaming behaviour, rheology, thermal conductivity, compressive strength parallel and perpendicular to the foaming directions, tensile strength, dimensional stability, short-term water absorption by partial immersion, and thermal stability. Even though the dynamic viscosity and apparent density were increased for SFP and LG-SFP formulations, thermal conductivity values improved by 17% and 10%, respectively, when 30 wt.% of particles were incorporated. The addition of SFP and LG-SFP particles resulted in the formation of more structurally and dimensionally stable PUR foams with a smaller average cell size and a greater content of closed cells. At 30 wt.% of SFP and LG-SFP particles, compressive strength increased by 114% and 46% in the perpendicular direction, respectively, and by 71% and 67% in the parallel direction, respectively, while tensile strength showed an 89% and 85% higher performance at 30 wt.% SFP and LG-SFP particles loading. Furthermore, short-term water absorption for all SFP and LG-SFP modified PUR foam formulations was almost two times lower compared to the control foam. SFP particles reduced the thermal stability of modified PUR foams, but LG-SFP particles shifted the thermal decomposition temperatures towards higher ones. | eng |
dc.format | PDF | |
dc.format.extent | p. 1-18 | |
dc.format.medium | tekstas / txt | |
dc.language.iso | eng | |
dc.relation.isreferencedby | Science Citation Index Expanded (Web of Science) | |
dc.relation.isreferencedby | Scopus | |
dc.rights | Laisvai prieinamas internete | |
dc.source.uri | https://doi.org/10.3390/ma14185351 | |
dc.source.uri | https://talpykla.elaba.lt/elaba-fedora/objects/elaba:106336545/datastreams/MAIN/content | |
dc.title | Vacuum-based impregnation of liquid glass into sunflower press cake particles and their use in bio-based rigid polyurethane foam | |
dc.type | Straipsnis Web of Science DB / Article in Web of Science DB | |
dcterms.accessRights | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | |
dcterms.license | Creative Commons – Attribution – 4.0 International | |
dcterms.references | 53 | |
dc.type.pubtype | S1 - Straipsnis Web of Science DB / Web of Science DB article | |
dc.contributor.institution | Vilniaus Gedimino technikos universitetas | |
dc.contributor.institution | Lodz University of Technology | |
dc.contributor.faculty | Statybos fakultetas / Faculty of Civil Engineering | |
dc.contributor.department | Statybinių medžiagų institutas / Institute of Building Materials | |
dc.subject.researchfield | T 008 - Medžiagų inžinerija / Material engineering | |
dc.subject.researchfield | T 004 - Aplinkos inžinerija / Environmental engineering | |
dc.subject.researchfield | T 002 - Statybos inžinerija / Construction and engineering | |
dc.subject.studydirection | F03 - Medžiagų technologijos / Materials technology | |
dc.subject.vgtuprioritizedfields | SD0202 - Aplinką tausojančios statybinės medžiagos ir technologijos / Low emissions building materials and technologies | |
dc.subject.ltspecializations | L104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies | |
dc.subject.en | sunflower press cake | |
dc.subject.en | bio-polyurethane foam | |
dc.subject.en | liquid glass | |
dc.subject.en | thermal insulation | |
dc.subject.en | circular economy | |
dc.subject.en | mechanical performance | |
dc.subject.en | water absorption | |
dcterms.sourcetitle | Materials: Special Issue Waste-Based Polymer Composites | |
dc.description.issue | iss. 18 | |
dc.description.volume | vol. 14 | |
dc.publisher.name | MDPI | |
dc.publisher.city | Basel | |
dc.identifier.doi | 000699761400001 | |
dc.identifier.doi | 10.3390/ma14185351 | |
dc.identifier.elaba | 106336545 | |