Performance evaluation of a rotational barrel segment for low-density polyethylene masterbatch dilution in single-screw extrusion: Microscopy-based distributive and dispersive indices with process trade-offs
Artykuł w czasopiśmie
MNiSW
100
Lista 2024
| Status: | |
| Autorzy: | Gaspar-Cunha António, Malheiro Maurício, Sikora Janusz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 12 |
| Wolumen/Tom: | 20 |
| Strony: | 21 - 46 |
| Impact Factor: | 1,5 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | The authors acknowledge funding from FEDER funds through the COMPETE 2020 Program and National Funds through FCT (Portuguese Founda- tion for Science and Technology) under the projects UID-B/05256/2020 and UID-P/05256/2020, the “Agendas para a Inovação Empresarial” (Project nº 49, acronym “INOV.AM”, with reference PRR/49/INOV.AM/EE, operation code 02/C05- i01.01/2022.PC644865234-00000004), supported by the RRP - Recovery and Resilience Plan and by the European Funds Next Generation EU. http:// www.recuperarportugal.gov.pt/, and the Lublin University of Technology pro-quality subsidy for the development of the research potential under individual grants No. FD-20/IM-5/106 in 2026. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 2 listopada 2026 |
| Abstrakty: | angielski |
| Mixing quality in polymer extrusion is critical when additives are incorporated through masterbatches. This work evaluates a patented rotational barrel segment (RBS) in a single-screw extruder, separately quantifying distribu- tive and dispersive mixing and relating them to process trade-offs. RBS rotational speed and direction, barrel/ die temperature, and a downstream Cut Rings section were investigated during dilution of a blue masterbatch in LDPE. From optical micrographs (50× and 100×, three locations), an image-analysis workflow provided a dis- tributive index (DMI) and a dispersive index (DsMI), interpreted with the measured process variables. Counter- rotation improves distributive mixing and gives the highest mixing score (MixScore = 61.6 at Nb = −50 rpm vs. 57.9 neutral), at the cost of specific energy (3443.9 vs. 2590.9 kJ/kg). Strong co-rotation gives the best dispersive performance with the highest throughput and low specific energy (Nb = +50 rpm: DsMI = 52.7, Q = 6.54 kg/h, Etotal = 2482.6 kJ/kg). Raising temperature from 170 to 190 °C lowers pressure and energy but degrades distribu- tive mixing. The Cut Rings section is beneficial only in an intermediate co-rotating case. The RBS therefore acts as an effective mixing variable. |
