Injection-molded magnetic ferrite composite and method for producing same

By combining modified ferrite magnetic powder with composite binders, the problems of material flowability and molding difficulty in injection-molded magnets have been solved, enabling the efficient fabrication of complex-shaped magnetic components and improving production efficiency and molding accuracy.

CN122417593APending Publication Date: 2026-07-17SHENZHEN LEPUTAI TECH CO LTD
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Patent Information

Application Number
CN202610741175.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing ferrite composite materials for injection molding magnets exhibit decreased fluidity at high magnetic powder filling levels, increasing the difficulty of injection molding and making them prone to defects such as material shortage and shrinkage cavities. Furthermore, magnetic powder agglomeration leads to a decline in magnetic and mechanical properties.

Method used

By combining modified ferrite magnetic powder with composite binders, coupling agents, lubricants, antioxidants and reinforcing agents, and through modification treatment and blending granulation process, a ferrite composite material for injection molding magnets with good flowability was prepared.

Benefits of technology

It improves the injection flowability and molding precision of materials, reduces production costs, enables the fabrication of magnetic components with complex shapes and small dimensions, and improves production efficiency.

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Abstract

The application discloses a kind of injection molding magnetic ferrite composite material and preparation method thereof, by following weight percentage component composition: modified ferrite magnetic powder 82%-90%, composite binder 7%-15%, coupling agent 0.3%-0.8%, lubricant 0.5%-1.2%, antioxidant 0.2%-0.5%, reinforcing agent 0.3%-1.0%;The composite binder is mixed by nylon 6, nylon 12 and polyphenylene sulfide according to weight ratio 2:1:0.5-1, the injection molding magnetic ferrite composite material and preparation method thereof, make composite material have good injection molding fluidity, can be prepared shape complex, size tiny magnetic component device, forming precision is high, without subsequent processing, further improve production efficiency, reduce production cost.
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