| Title | Polymer Waste Recycling of Injection Molding Purges with Softening for Cutting with Fresnel Solar Collector-A Real Problem Linked to Sustainability and the Circular Economy |
|---|---|
| ID_Doc | 22968 |
| Authors | Plaza, MG; López, MLM; Bueno, JDP; Meneses, JP; Pérez, AXM |
| Title | Polymer Waste Recycling of Injection Molding Purges with Softening for Cutting with Fresnel Solar Collector-A Real Problem Linked to Sustainability and the Circular Economy |
| Year | 2024 |
| Published | Polymers, 16.0, 7 |
| Abstract | A plastic injection waste known as "purge" cannot be reintegrated into the recycling chain due to its shape, size, and composition. Grinding these cannot be carried out with traditional mills due to significant variations in size and shape. This work proposes a process and the design of a device that operates with solar energy to cut the purges without exceeding the degradation temperature. The size reduction allows reprocessing, revalorization, and handling. The purges are mixtures of processed polymers, so their characterization information is unavailable. Some characterizations were conducted before the design of the process and after the cut of the purges. Some of the most representative purges in a recycling company were evaluated. The flame test determines that all material mixtures retain thermoplasticity. The hardness (Shore D) presented changes in four of the purges being assessed, with results in a range of 59-71 before softening and 60-68 after softening. Young's modulus was analyzed by the impulse excitation technique (IET), which was 2.38-3.95 GPa before softening and 1.7-4.28 after softening. The feasibility of cutting purges at their softening temperature was evaluated. This was achieved in all the purges evaluated at 250-280 degrees C. FTIR allowed for corroboration of no significant change in the purges after softening. The five types of purges evaluated were polypropylene-ABS, polycarbonate-ABS-polypropylene, yellow nylon 66, acetal, and black nylon 66 with fillers, and all were easily cut at their softening temperature, allowing their manipulation in subsequent process steps. |
| https://www.mdpi.com/2073-4360/16/7/1012/pdf?version=1712574974 |
Similar Articles
| ID | Score | Article |
|---|---|---|
15501
|
Flizikowski, J; Kruszelnicka, W; Macko, M The Development of Efficient Contaminated Polymer Materials Shredding in Recycling Processes(2021)Polymers, 13, 5 | |
| 13724
|
Köpplmayr, T; Fellner, K; Fehringer, S; Klammer, G; Traxler, I; Czaker, S; Fischer, J Direct Injection Molding of Recycled Thermoplastics using a Two-stage Process including Melt Filtration and Degassing(2024) | |
| 25588
|
Möllnitz, S; Feuchter, M; Duretek, I; Schmidt, G; Pomberger, R; Sarc, R Processability of Different Polymer Fractions Recovered from Mixed Wastes and Determination of Material Properties for Recycling(2021)Polymers, 13, 3 | |
| 15267
|
Huang, PW; Peng, HS Number of Times Recycled and Its Effect on the Recyclability, Fluidity and Tensile Properties of Polypropylene Injection Molded Parts(2021)Sustainability, 13, 19 | |
| 8362
|
Costa, AA; Martinho, PG; Barreiros, FM Comparison between the Mechanical Recycling Behaviour of Amorphous and Semicrystalline Polymers: A Case Study(2023)Recycling, 8.0, 1 | |
| 27253
|
Ferrara, C; Scarfato, P; Ferraioli, R; Apicella, A; Incarnato, L; De Feo, G Environmental sustainability assessment of different end-of-life scenarios for the pulper rejects produced in the paper recycling process(2023) | |
| 21737
|
Schade, A; Melzer, M; Zimmermann, S; Schwarz, T; Stoewe, K; Kuhn, H Plastic Waste Recycling-A Chemical Recycling Perspective(2024)Acs Sustainable Chemistry & Engineering, 12.0, 33 | |
| 19487
|
Lase, IS; Bashirgonbadi, A; van Rhijn, F; Dewulf, J; Ragaert, K; Delva, L; Roosen, M; Brandsma, M; Langen, M; De Meester, S Material flow analysis and recycling performance of an improved mechanical recycling process for post-consumer flexible plastics(2022) | |
| 21899
|
Eriksen, MK; Christiansen, JD; Daugaard, AE; Astrup, TF Closing the loop for PET, PE and PP waste from households: Influence of material properties and product design for plastic recycling(2019) | |
| 22183
|
de las Heras, RB; Colom, X; Canavate, J Comparative Analysis of the Effects of Incorporating Post-Industrial Recycled LLDPE and Post-Consumer PE in Films: Macrostructural and Microstructural Perspectives in the Packaging Industry(2024)Polymers, 16.0, 7 |