Influence of radiation cross-linking on fiber orientation in vibration welds of Polyamide 66
| Autor: | Christoph Leisen, Dietmar Drummer, Markus Menacher |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Polymers and Plastics 010308 nuclear & particles physics Scanning electron microscope General Chemistry 01 natural sciences 030218 nuclear medicine & medical imaging law.invention Vibration Stress (mechanics) 03 medical and health sciences 0302 clinical medicine Optical microscope law 0103 physical sciences Polyamide Materials Chemistry Ceramics and Composites Friction welding Fiber Composite material Melt flow index |
| Zdroj: | Polymer Composites. 38:489-495 |
| ISSN: | 0272-8397 |
| DOI: | 10.1002/pc.23607 |
| Popis: | A conventional vibration welding process of fiber-reinforced Polyamide 66 is characterized by a continuous melt flow in the quasi-steady phase. This squeeze flow leads to a disadvantageous fiber reorientation in the weld zone. The fibers are oriented parallel to the melt flow and thus perpendicular to the common stress direction. This causes relatively low weld strength compared to the strength of the base material. Radiation cross-linking fiber-reinforced Polyamide 66 with electron beams influences the material characteristics. As a consequence, the resulting energy balance during vibration welding is changed and the squeeze flow is impeded, thus averting the fiber reorientation in the weld seam. The scope of this article is to demonstrate the influence of radiation cross-linking on fiber orientation in vibration welds. Mechanical, calorimetric, rheological, scanning electron microscope, and light microscope investigations serve to highlight the influence of radiation cross-linking on the vibration welds of fiber-reinforced Polyamide 66. POLYM. COMPOS., 2015. © 2015 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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