Unlock instant, AI-driven research and patent intelligence for your innovation.

Injection-molded ferrite soft magnetic material and preparation method thereof

A ferrite and soft magnetic technology, applied in the manufacture of inductors/transformers/magnets, inorganic materials, electrical components, etc. The effect of fluidity, improved utilization, and high magnetic properties

Active Publication Date: 2016-07-20
广东南磁科技有限公司
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the injection ferrite soft magnetic material used in the molding of injection magnets contains additives such as binders in a specific ratio relative to the weight of the raw material powder to obtain a kneaded product, the magnetic powder often agglomerates and the kneaded product flows. Problems of poor stability, uneven internal density and poor tissue uniformity
As a result, the strength and other properties of the molded body obtained by molding the kneaded product also vary, and there is a problem that the loss of magnetic properties is too large.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Injection-molded ferrite soft magnetic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] Another object of the present invention is to provide a preparation method for injection molding ferrite soft magnetic material, said method comprising the following steps:

[0048] According to the weight percentage of the described component of claim 1,

[0049] 1) Add additives to strontium barium ferrite and mix well, then add coupling agent to strontium barium ferrite and mix well;

[0050] 2) Add ethylene-ethyl acrylate copolymer and lubricant to the mixed material in step 1), and mix well;

[0051] 3) Heat the material mixed in step 2) into a melt, extrude and granulate, and cut the material to obtain an injection molded ferrite soft magnetic material.

[0052] In a preferred embodiment, in step 2), ethylene-ethyl acrylate copolymer is added to the mixed material in step 1) and mixed uniformly, and then lubricant is added and mixed uniformly.

[0053] Another object of the present invention is to provide the application field of the injection molded ferrite sof...

Embodiment approach 1

[0055] Embodiment 1, an injection molding ferrite soft magnetic material, the injection molding ferrite soft magnetic material includes the following components in weight percentage:

[0056] Strontium barium ferrite 88-94%

[0057] Ethylene-ethyl acrylate copolymer 3-10%

[0058] Lubricant 0.5-2%

[0059] Coupling agent 0.5-1.0%

[0060] Additive 0.02-0.5%;

[0061] Wherein, the content of ethyl acrylate in the ethylene-ethyl acrylate copolymer is 10-25wt%, the additive is a modified nano-inorganic particle, and the modified nano-inorganic particle is an organic compound containing a reactive functional group on the surface In the modified nano inorganic particles, the organic compound includes organosiloxane or organic carboxylic acid, and the reactive functional group includes amino group, double bond, epoxy group or mercapto group.

Embodiment approach 2

[0062] Embodiment 2 is the same as Embodiment 1, except that the particle size of the strontium barium ferrite is 0.5-1.5 μm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of magnetic materials and particularly relates to an injection-molded ferrite soft magnetic material and a preparation method thereof. The injection-molded ferrite soft magnetic material is prepared from strontium-barium ferrite, an ethylene-ethyl acrylate copolymer, a lubricant, a coupling agent and an additive. The injection-molded ferrite soft magnetic material has good fluidity, and a formed body obtained through injection molding has the characteristics of high density, high strength and high magnetic performance.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and more specifically, the invention relates to an injection molded ferrite soft magnetic material and a preparation method thereof. Background technique [0002] The magnet prepared by mixing and granulating the magnetic powder, polymer binder, and additives in a certain proportion, and then injecting the pellets through an injection molding machine at an appropriate temperature is called an injection magnet. As an important branch of bonded magnets, this type of magnet has the advantages of high dimensional accuracy, good mechanical properties, magnetization with complex shapes and multi-pole orientations, integral injection molding with other parts, and easy large-scale production. Widely used in household appliances, automobiles, communication equipment, testing instruments, computers, office equipment and other fields. In recent years, with the rapid development of China's indust...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/37H01F41/00
CPCH01F1/37
Inventor 郑彦陈启果
Owner 广东南磁科技有限公司