|
| Influence of process formula on the flow properties of injection molded plastic magnetic particles |
|
Received:August 10, 2021
Revised:August 20, 2021
Accepted:August 27, 2021
Published Online:October 25, 2022
|
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:process formula; injection molding ; plastic magnetic particles; flow properties ; |
| Author | Institution |
| XIONG Jun |
BGRIMM Magnetic Materials Technology FuyangCo,Ltd |
| WANG Feng |
BGRIMM Magnetic Materials Technology FuyangCo,Ltd |
| ZHANG Kang |
BGRIMM Magnetic Materials Technology FuyangCo,Ltd |
| TANG Da-wei |
BGRIMM Magnetic Materials Technology FuyangCo,Ltd |
|
| Hits: 1448 |
| Download times: 1225 |
| Abstract: |
| Nylon is used as a binder, heated and mixed with strontium ferrite magnetic powder and additives through a twin-screw extruder, cooled and granulated to obtain injection molded magnetic plastic particles, and injection molded to obtain injection molded magnets. The magnetic powder morphology, particle size distribution, The influence of nylon formula and extrusion temperature on the flow properties of plastic magnetic particles. The results show that the magnetic powder particles are close to spherical in shape, with smooth and regular surface, and it is easier to fill the cavity when subjected to external force extrusion, the friction between the magnetic powder is small, and the flow performance is good. The finer the magnetic powder, the lower the loose packing density, the arch bridge effect is easily formed during the filling process, and the worse the flow performance. The bimodal particle size distribution curve can make the flow performance and magnetic performance reach the best balance. Through formula adjustment, the processing fluidity and mechanical properties can be improved, and injection molded magnets with different properties can be prepared to meet the specific technical requirements of customers" products. The mixing and extrusion temperature of PA6 plastic magnetic particles is preferably 230-250℃. |
| Close |
|
|
|