Influence of Resin Flow State on Aluminum Flake Orientation in a Metallic-Like Resin Product Manufactured Through Injection Molding
| Autor: | Takahito Shirota, Makoto Nikawa, Hiroshi Yamagata |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Materials science Mechanical Engineering Flake Compression molding chemistry.chemical_element 02 engineering and technology Molding (process) Orientation (graph theory) 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Metal 020901 industrial engineering & automation chemistry Aluminium visual_art Product (mathematics) visual_art.visual_art_medium Composite material 0210 nano-technology |
| Zdroj: | International Journal of Automation Technology. 10:94-100 |
| ISSN: | 1883-8022 1881-7629 |
| Popis: | A potential method for predicting the orientation of aluminum flakes in a metallic-like product without a coating was examined. To achieve this goal, injection molding test of a thin product was carried out with a metallic-like resin that contained aluminum flakes. Furthermore, the flow state of the base material (polypropylene) of the metallic-like resin during molding was calculated via computer simulations, and the results were compared to the experimental results. The reflectance and orientation of the product were measured as functions of the gate shape and injection speed. The reflectance of the product made with the metallic-like resin was measured with a spectrophotometer, and the orientation of the aluminum flakes was measured via X-ray computed tomography (CT). The reflectance changed according to differences in the gate shape and injection speed. In addition, the orientation of the aluminum flakes changed with the distance from the surface of the product. The shear rate of the base material was calculated immediately after the resin completely filled the mold, and the results correlated well with the orientation of the flakes. The results suggest that it is possible to predict the orientation of aluminum flakes within metallic-like resins. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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