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Plastic-based composite material with permanent magnetism function and preparation method thereof

A composite material and plastic-based technology, which is applied in the field of plastic-based composite materials and its preparation, can solve the problems of the maximum magnetic energy area and unsatisfactory mechanical properties of composite magnetic plastics, and achieve the effect of good mechanical properties and large magnetic energy area

Inactive Publication Date: 2013-02-20
GUANGDONG HIGH & NEW ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, magnetic plastics can be divided into two types: structural type and composite type. The structural type refers to the polymer itself with magnetic function, while the composite type refers to the permanent magnetic material formed by processing and compounding the plastic matrix and magnetic powder. However, the existing technology Among them, due to compatibility and dispersion problems, the maximum magnetic energy area and mechanical properties of the processed composite magnetic plastics are mostly unsatisfactory.

Method used

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Experimental program
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Effect test

preparation example Construction

[0017] A method for preparing a plastic-based composite material with permanent magnet function, comprising the following steps:

[0018] 1) Put the plastic matrix, compatibilizer, lubricant, and NdFeB surface-treated with a coupling agent in a mixer and mix for 2-3 minutes;

[0019] 2) Extrude the raw materials obtained in step 1) in a co-rotating twin-screw extruder, and the screw length-to-diameter ratio of the extruder is 1:30-40;

[0020] 3) Mix the material obtained in step 2) with ferrous metaferrate and antioxidant in a mixer for 2-3 minutes;

[0021] 4) The material obtained in step 3) is extruded in a co-rotating twin-screw extruder, and the length-to-diameter ratio of the screw of the extruder is 1:30-40.

Embodiment 1

[0026] A formula composition of a plastic-based composite material with permanent magnet function is shown in Table 1:

[0027] Table 1: Formulation composition of a plastic matrix composite with permanent magnet function

[0028] raw material parts by mass PP 40 Ferrous metaferrate 35 NdFeB surface treated with coupling agent 20 PP-g-MAH 5 Ethylene bis stearamide 1 Antioxidant 1010 0.5

Embodiment 2

[0030] A formula composition of a plastic-based composite material with permanent magnet function is shown in Table 2:

[0031] Table 2: Formulation composition of a plastic matrix composite with permanent magnet function

[0032] raw material parts by mass PP 45 Ferrous metaferrate 35 NdFeB surface treated with coupling agent 15 PP-g-MAH 5 Ethylene bis stearamide 1 Antioxidant 1010 0.5

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Abstract

The invention discloses a plastic-based composite material with permanent magnet function, which is composed of the following raw materials in parts by mass: 40-80 parts of plastic matrix, 10-40 parts of ferrous metaferrite, 10-20 parts of NdFeB surface-treated by coupling agent, 5-10 parts of compatibilizer, 0.5-1 part of lubricant, 0.5-1 part of antioxidant. The plastic-based composite material with permanent magnetic function prepared by the invention has better mechanical properties and larger maximum magnetic energy area.

Description

technical field [0001] The invention relates to a plastic-based composite material with permanent magnet function and a preparation method thereof. Background technique [0002] As a new type of functional material, magnetic plastic is widely used in many fields such as electronics, electricity, instrumentation, communication, etc. due to its inherent characteristics. Due to the low density and high impact strength of magnetic plastic, it can be cut, cut, drilled, welded , lamination, and embossing patterns will not break when used, and can be directly injection molded. At the same time, it can be processed into products with high dimensional accuracy, thin walls, and complex shapes. Products with inserts can be formed to realize the miniaturization of electromagnetic equipment. , light weight, precision and high performance. Therefore, in some new fields, sintered magnets are gradually being replaced by magnetic plastics. At the same time, magnetic plastics consume less en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08L67/02C08L51/06C08K13/06C08K3/24C08K3/38
Inventor 曾斌
Owner GUANGDONG HIGH & NEW ENG PLASTICS
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