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A kind of preparation method of permanent magnetic ferrite nylon master batch for compatibilization

A permanent magnet ferrite and ferrite magnet technology, which is applied in the field of preparation of permanent magnet ferrite nylon masterbatch for compatibilization, can solve the problems such as the absence of soft magnetic compatibilization masterbatch and the like, so as to improve the effective utilization rate and increase the Soft magnetic properties and good compatibility

Active Publication Date: 2018-06-19
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, in the domestic technology for the preparation of soft magnetic materials, there has never been a soft magnetic compatibilization masterbatch prepared by compounding nylon 6 containing dendritic units, PAMAM and nylon 6 containing dendritic units.

Method used

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  • A kind of preparation method of permanent magnetic ferrite nylon master batch for compatibilization
  • A kind of preparation method of permanent magnetic ferrite nylon master batch for compatibilization
  • A kind of preparation method of permanent magnetic ferrite nylon master batch for compatibilization

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of permanent magnet ferrite nylon masterbatch for compatibilization:

[0031] Take 50Kg ferrite magnetic powder (Fe2O3 accounts for 85wt%, magnesium oxide accounts for 10wt%, zinc oxide accounts for 5wt%, the average particle size of each component of the mixture is 1-4μm), add 0.5Kg first-generation PAMAM to ferrite magnetic powder The surface is modified by stirring and blending (the specific operation is: 0.5Kg first-generation PAMAM and 50Kg ferrite magnetic powder are placed in a high-speed mixer for stirring, infiltration and blending), and then 13.5Kg of nylon 6 powder containing dendritic units is added (the containing The dendritic macromolecule added by the nylon 6 of the dendron unit is a first-generation PAMAM) to blend, fully stir to ensure uniform mixing; then add 36Kg nylon 6 to the mixture, continue to stir and mix uniformly, and place the mixed mixture at 80 ℃ vacuum oven, dry.

[0032] The dried mixture is granulated in a single-s...

Embodiment 2

[0035] A preparation method of permanent magnet ferrite nylon masterbatch for compatibilization:

[0036] Get 30Kg ferrite magnetic powder (Fe2O3 accounts for 80wt%, magnesium oxide accounts for 10wt%, zinc oxide accounts for 10wt%, the average particle diameter of each component of the mixture is 1-4μm), add 1.0Kg second-generation PAMAM to ferrite The surface of the magnetic powder is modified by stirring and blending (the specific operation is: 1.0Kg second-generation PAMAM and 30Kg ferrite magnetic powder are placed in a high-speed mixer for stirring, infiltration and blending), and then 9Kg of nylon 6 powder containing dendritic units is added (the The dendritic macromolecule that the nylon 6 that contains dendritic unit is added is the second generation PAMAM) to carry out blending, fully stirs, guarantees to mix evenly; Then adds 60Kg nylon 66 in the mixture, continues to stir and mix evenly, puts the mixed material of mixing Dry in a vacuum oven at 85°C.

[0037] The ...

Embodiment 3

[0040] A preparation method of permanent magnet ferrite nylon masterbatch for compatibilization:

[0041] Take 60Kg of ferrite magnetic powder (Fe2O3 accounts for 90wt%, magnesium oxide accounts for 5wt%, zinc oxide accounts for 5wt%, and the average particle size of each component of the mixture is 1-4μm), add 2.0Kg third-generation PAMAM to the ferrite magnetic powder The surface is modified by stirring and blending (the specific operation is: 2.0Kg third-generation PAMAM and 60Kg ferrite magnetic powder are placed in a high-speed mixer for stirring, immersion and blending), and then 18Kg of nylon 6 powder containing dendritic units is added (the dendrite-containing The dendrimers added to the nylon 6 of the unit are three generations of PAMAM) for blending, fully stirred to ensure uniform mixing; then add 20Kg nylon 12 to the mixture, continue to stir and mix uniformly, and place the mixed mixture at 90°C Dry in a vacuum oven.

[0042] The dried mixture is granulated in a ...

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Abstract

The invention relates to the technical field of the preparation of magnetic materials, in particular to a preparation method of a permanent magnet ferrite nylon masterbatch for compatibilization, and aims to solve problems that the effect is poor, the magnetic powder is easy to agglomerate, and the magnetic composite materials have low magnetic performance, due to the existing soft magnetic material employs a compatibilizer, a coupling agent and other modified magnetic powder. The preparation method comprises the following steps: firstly, blending and stirring dendritic macromolecules with the magnetic powder, and blending nylon 6 containing dendritic units with the magnetic powder, to effectively improve the compatibility of the magnetic powder and the nylon 6 through the physical reaction between molecular chains of the dendritic macromolecules; and finally, adding different nylon materials, mixing and granulating to obtain the permanent magnet ferrite nylon masterbatch for compatibilization. The preparation method provided by the invention is used for improving the compatibility of ferrite and nylon, and uses the magnetic powder and nylon mixed masterbatch as the soft magnetic material compatibilizer to improve the compatibility of magnetic materials without affecting the performances of the magnetic materials; the masterbatch and the soft magnet have good compatibility, can effectively improve the availability of ferrite magnetic powder, and can improve the performance of the soft magnet.

Description

technical field [0001] The invention relates to the technical field of preparation of magnetic materials, in particular to a preparation method of permanent magnet ferrite nylon masterbatch for compatibilization. Background technique [0002] Ferrite permanent magnet materials are currently the most widely used permanent magnet materials in the world. According to different processes and components, they can be divided into hard magnets and soft magnets. Due to its simple forming process, soft magnetism does not require high temperature and high pressure control, and it is easy to manufacture magnet products with high dimensional accuracy and no need for secondary processing. It can prepare magnets with complex shapes and multi-pole orientation magnetization, and can be integrally injection molded with other components. mass production. Therefore, the market has expanded extremely rapidly in recent years, showing good development prospects. [0003] The magnetic properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L87/00C08K9/04C08K3/22C08J3/22
CPCC08J3/226C08J2377/02C08J2377/06C08J2477/02C08J2477/06C08K2201/003C08L77/02C08L77/06C08L2205/025C08L2205/03C08L2205/035C08L87/00C08K9/08C08K2003/2272C08K2003/222C08K2003/2296
Inventor 杜军戴洪湖汪连生王锋丁瑜郭连贵覃彩芹
Owner HUBEI ENG UNIV
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