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Polyethylene-based injection-molded magnetic composite material for inductor and preparation method thereof

A magnetic composite material, polyethylene-based technology, applied in the manufacture of inductors/transformers/magnets, the magnetism of organic materials/organic magnetic materials, circuits, etc., can solve the problems of low magnetic inorganic filler filling and low maximum magnetic energy product , to achieve the effect of increasing the filling amount, ensuring the mechanical strength and improving the compatibility

Pending Publication Date: 2021-04-20
慧迈材料科技(广东)有限公司
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Problems solved by technology

[0008] In view of the above situation, the present invention provides a polyethylene-based injection-molded magnetic composite material and its preparation method to solve the problem that the polymer-based magnetic composite material currently on the market is affected by the decline in mechanical strength and the filling amount of magnetic inorganic fillers is not high. The problem of low magnetic energy product

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  • Polyethylene-based injection-molded magnetic composite material for inductor and preparation method thereof

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Embodiment 1-1

[0040] According to the following method, according to the feed ratio of each raw material in Table 1, the polyethylene-based injection-molded magnetic composite material of the present invention is prepared by feeding:

[0041] Step A: crushing the polyethylene substrate to 100 mesh to obtain polyethylene micropowder;

[0042] Step B: Hydrolyze the measured polymer with 30% distilled water relative to its mass for 2 hours in advance to obtain a coupling agent hydrolyzate, then add the magnetic filler to a high-speed batch mixer with temperature control, and then add the above coupling For the hydrolyzate of the agent, first mix at high speed for 10 minutes, after mixing evenly, adjust the speed of the mixer to 5r / min, raise the temperature to 100°C, pre-react for 2 hours, and stop the temperature control.

[0043] Step C: Continue to put polyethylene micropowder and other additives into the high-speed batching mixer described in step B, and mix at high speed for 10 minutes to...

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Abstract

The invention belongs to the technical field of inductance components, and particularly relates to a polyethylene-based injection-molded magnetic composite material for a inductor and a preparation method thereof. The polyethylene-based injection-molded magnetic composite material is prepared from the following raw materials in percentage by mass: 5%-30% of a polyethylene base material, 70%-95% of a magnetic filler, 1%-4% of a coupling agent and 1%-4% of an auxiliary agent. According to the polyethylene-based injection-molded magnetic composite material disclosed by the invention, the nylon base material can be in more sufficient contact with the interface of the magnetic filler, and compatibility is improved, so a filling amount can be increased, and the maximum magnetic energy product is improved; meanwhile, the cohesive energy of the polyethylene-based injection-molded magnetic composite material is greatly improved due to the improvement of interface adhesion; and therefore, the mechanical strength of the polyethylene-based injection-molded magnetic composite material is ensured while filling of the high-magnetism filler is conducted.

Description

technical field [0001] The invention belongs to the technical field of inductance components, and in particular relates to a polyethylene-based injection-molded magnetic composite material for inductance and a preparation method thereof. Background technique [0002] Metal soft magnetic powder core is a new type of magnetic material with special functions of magnetoelectric conversion. It is a powder made of metal or alloy soft magnetic material and a magnetic core material produced by a special process. Due to the special function of magnetoelectric conversion, soft magnetic materials are widely used in various scientific and technological fields and industrial fields. Because of this, metal soft magnetic powder cores play an irreplaceable role in the power electronics industry. The production of traditional soft magnetic powder cores is basically pressed by a press. Pressing has certain advantages in manufacturing soft magnetic powder cores, but there are also certain def...

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Application Information

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IPC IPC(8): C08L23/06C08K7/18C08K3/38C08K3/08C08K9/00C08K13/06H01F1/42H01F41/00
Inventor 闵永刚刘屹东余文涛
Owner 慧迈材料科技(广东)有限公司
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