Solid-State Shear Pulverization of Plastics: A Green Recycling Process
| Autor: | Klementina Khait, John M. Torkelson |
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| Rok vydání: | 1999 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope General Chemical Engineering Materials Science (miscellaneous) Molding (process) Pelletizing Rotational molding Shear (sheet metal) Natural rubber Compounding visual_art Scientific method Materials Chemistry visual_art.visual_art_medium Composite material |
| Zdroj: | Polymer-Plastics Technology and Engineering. 38:445-457 |
| ISSN: | 1525-6111 0360-2559 |
| DOI: | 10.1080/03602559909351592 |
| Popis: | A novel process called solid-state shear pulverization (S3P) has been developed at Northwestern University to recycle single or commingled postconsumer or preconsumer polymeric waste without sorting by type or color. This continuous, one-step process converts shredded plastic or rubber waste into controlled-particle-size powder ranging from coarse (10 and 20 mesh) to fine (80 mesh) or ultrafine (200 mesh). As a result, the pulverization product is usable in applications ranging from direct injection molding without prior pelletization, to rotational molding, to use in protective and decorative powder coatings, as well as to blending with virgin resins and compounding with additives. Scanning electron microscopy reveals that the fine particles have a unique elongated shape that is attributed to the high shear conditions occurring during the pulverization process. Injection-molded parts made from the powder product of the S3P process have mechanical and physical properties comparable to or better t... |
| Databáze: | OpenAIRE |
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