Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance
Polyurethane (PUR) foams are some of the most promising thermal insulating materials because of their high flammability, but further applications are limited. Therefore, the development of flame-retardant materials with sufficient strength characteristics, water resistance, and low thermal insulatin...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/21/4543 |
| _version_ | 1797466737762893824 |
|---|---|
| author | Agnė Kairytė Sylwia Członka Jurga Šeputytė-Jucikė Sigitas Vėjelis |
| author_facet | Agnė Kairytė Sylwia Członka Jurga Šeputytė-Jucikė Sigitas Vėjelis |
| author_sort | Agnė Kairytė |
| collection | DOAJ |
| description | Polyurethane (PUR) foams are some of the most promising thermal insulating materials because of their high flammability, but further applications are limited. Therefore, the development of flame-retardant materials with sufficient strength characteristics, water resistance, and low thermal insulating properties is of great importance to the modern building industry. This study evaluates the possibility of a vacuum-based liquid glass (LG) infusion into bio-based fillers, in this case, sunflower press cake (SFP) particles, to improve the mechanical performance, water absorption, thermal insulation, ignitability, thermal stability, and flame retardancy of the resulting polyurethane (PUR) foam composites. The main findings show that LG slightly improves the thermal stability and highly contributes to the ignitability and flame retardancy of the resulting products. Most importantly, from 10 wt.% to 30 wt.%, the SFP/LG filler reduces the thermal conductivity and water absorption values by up to 20% and 50%, respectively, and increases the compressive strength by up to 110%. The results obtained indicate that the proposed SFP/LG filler-modified PUR foam composites are suitable for applications as thermal insulation materials in building structures. |
| first_indexed | 2024-03-09T18:42:57Z |
| format | Article |
| id | doaj.art-57e8a9bbc8074173a6bec355bba9f37e |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T18:42:57Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-57e8a9bbc8074173a6bec355bba9f37e2023-11-24T06:27:59ZengMDPI AGPolymers2073-43602022-10-011421454310.3390/polym14214543Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire ResistanceAgnė Kairytė0Sylwia Członka1Jurga Šeputytė-Jucikė2Sigitas Vėjelis3Laboratory of Thermal Insulating Materials and Acoustics, Faculty of Civil Engineering, Institute of Building Materials, Vilnius Gediminas Technical University, Linkmenu St. 28, LT-08217 Vilnius, LithuaniaInstitute of Polymer & Dye Technology, Lodz University of Technology, 90-924 Lodz, PolandLaboratory of Thermal Insulating Materials and Acoustics, Faculty of Civil Engineering, Institute of Building Materials, Vilnius Gediminas Technical University, Linkmenu St. 28, LT-08217 Vilnius, LithuaniaLaboratory of Thermal Insulating Materials and Acoustics, Faculty of Civil Engineering, Institute of Building Materials, Vilnius Gediminas Technical University, Linkmenu St. 28, LT-08217 Vilnius, LithuaniaPolyurethane (PUR) foams are some of the most promising thermal insulating materials because of their high flammability, but further applications are limited. Therefore, the development of flame-retardant materials with sufficient strength characteristics, water resistance, and low thermal insulating properties is of great importance to the modern building industry. This study evaluates the possibility of a vacuum-based liquid glass (LG) infusion into bio-based fillers, in this case, sunflower press cake (SFP) particles, to improve the mechanical performance, water absorption, thermal insulation, ignitability, thermal stability, and flame retardancy of the resulting polyurethane (PUR) foam composites. The main findings show that LG slightly improves the thermal stability and highly contributes to the ignitability and flame retardancy of the resulting products. Most importantly, from 10 wt.% to 30 wt.%, the SFP/LG filler reduces the thermal conductivity and water absorption values by up to 20% and 50%, respectively, and increases the compressive strength by up to 110%. The results obtained indicate that the proposed SFP/LG filler-modified PUR foam composites are suitable for applications as thermal insulation materials in building structures.https://www.mdpi.com/2073-4360/14/21/4543bio-based polyurethane foamsunflower press cakeliquid glassflammabilityignitabilitysustainability |
| spellingShingle | Agnė Kairytė Sylwia Członka Jurga Šeputytė-Jucikė Sigitas Vėjelis Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance Polymers bio-based polyurethane foam sunflower press cake liquid glass flammability ignitability sustainability |
| title | Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance |
| title_full | Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance |
| title_fullStr | Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance |
| title_full_unstemmed | Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance |
| title_short | Impact of Sunflower Press Cake and Its Modification with Liquid Glass on Polyurethane Foam Composites: Thermal Stability, Ignitability, and Fire Resistance |
| title_sort | impact of sunflower press cake and its modification with liquid glass on polyurethane foam composites thermal stability ignitability and fire resistance |
| topic | bio-based polyurethane foam sunflower press cake liquid glass flammability ignitability sustainability |
| url | https://www.mdpi.com/2073-4360/14/21/4543 |
| work_keys_str_mv | AT agnekairyte impactofsunflowerpresscakeanditsmodificationwithliquidglassonpolyurethanefoamcompositesthermalstabilityignitabilityandfireresistance AT sylwiaczłonka impactofsunflowerpresscakeanditsmodificationwithliquidglassonpolyurethanefoamcompositesthermalstabilityignitabilityandfireresistance AT jurgaseputytejucike impactofsunflowerpresscakeanditsmodificationwithliquidglassonpolyurethanefoamcompositesthermalstabilityignitabilityandfireresistance AT sigitasvejelis impactofsunflowerpresscakeanditsmodificationwithliquidglassonpolyurethanefoamcompositesthermalstabilityignitabilityandfireresistance |