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High-performance polyamide/samarium-iron-nitrogen magnetic composite material and preparation method thereof

A magnetic composite material, samarium iron nitrogen technology, applied in the direction of coating, etc., can solve the problems of composite material mechanics, forming process performance and other problems, and achieve the effect of avoiding uneven mixing, avoiding oxidation, and improving forming processability.

Active Publication Date: 2017-01-25
杭州海声科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the filling amount of magnetic powder is high, the mechanical and processing properties of the composite material are bound to be affected.

Method used

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  • High-performance polyamide/samarium-iron-nitrogen magnetic composite material and preparation method thereof
  • High-performance polyamide/samarium-iron-nitrogen magnetic composite material and preparation method thereof
  • High-performance polyamide/samarium-iron-nitrogen magnetic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The mass percentages of various raw materials and raw materials in the present embodiment are as follows:

[0031] Polyamide resin (PA6) 8%

[0032] Samarium iron nitrogen powder (Sm 2 Fe 17 N 2.1 ) 91%

[0033] Mixed plastic additives 1%

[0034] The mass fractions of plastic additives used are calculated according to the mass percentage of polyamide resin, and their types and mass percentages are as follows:

[0035]

[0036] The process steps are as follows:

[0037] Step 1. Modified PA6 granulation

[0038] Mix PA6, POE, POE-g-MAH, silicone powder and antioxidant 1010 according to the above ratio, and then use a twin-screw extruder to granulate at 200°C to 220°C to obtain a modified PA6 resin.

[0039] Step 2. Magnetic particle surface treatment

[0040] Dissolve 0.5 parts of phosphate ester coupling agent and 1 part of phosphoric acid in an appropriate amount of absolute ethanol to obtain a mixed surface treatment agent. The amount of absolute ethanol is...

Embodiment 2

[0045] The mass percentages of various raw materials and raw materials in the present embodiment are as follows:

[0046] Polyamide resin (PA66) 8%

[0047] Samarium iron nitrogen powder (Sm 2 Fe 17 N 2.5 ) 91%

[0048] Mixed plastic additives 1%

[0049] The mass fractions of plastic additives used are calculated according to the mass percentage of polyamide resin, and their types and mass percentages are as follows:

[0050]

[0051] The process steps are as follows:

[0052] Step 1. Modified PA66 granulation

[0053] Mix PA66, POE, POE-g-MAH, polyamide wax and antioxidant 1010 according to the above ratio, and then use a twin-screw extruder to granulate at 230°C to 260°C to obtain modified PA66 resin.

[0054] Step 2. Magnetic particle surface treatment

[0055] 0.8 parts of phosphoric acid ester coupling agent and 1.5 parts of phosphoric acid are dissolved in an appropriate amount of dehydrated alcohol to obtain a mixed surface treatment agent, and the amount of d...

Embodiment 3

[0060] The mass percentages of various raw materials and raw materials in the present embodiment are as follows:

[0061] Polyamide resin (PA12) 8%

[0062] Samarium iron nitrogen powder (Sm 2 Fe 17 N 3 ) 91%

[0063] Mixed plastic additives 1%

[0064] The mass fractions of plastic additives used are calculated according to the mass percentage of polyamide resin, and their types and mass percentages are as follows:

[0065]

[0066] The process steps are as follows:

[0067] Step 1. Modified PA12 granulation

[0068] Mix PA12, EPDM, EPDM-g-MAH, silicone powder and antioxidant 4426 according to the above ratio, and then use a twin-screw extruder to granulate at 180°C to 200°C to obtain modified PA12 resin.

[0069] Step 2. Magnetic particle surface treatment

[0070] 0.5 parts of phosphate ester coupling agent and 1 part of phosphoric acid are dissolved in an appropriate amount of acetone to obtain a mixed surface treatment agent, and the amount of acetone used is l...

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Abstract

The invention relates to a method for preparing a high-performance polyamide / samarium-iron-nitrogen magnetic composite material. The method comprises the following steps: first, extruding polyphenylene sulfide resin serving as a matrix, a toughening agent, a lubricating agent, an antioxidant and the like together by using a twin-screw extruder to prepare a multifunctional master batch; second, extruding samarium-iron-nitrogen which is subjected to surface treatment and the master batch which is prepared in the first step to prepare the magnetic composite material. The polyamide / samarium-iron-nitrogen magnetic composite material prepared by the method has high fluidity, high magnetic performance and good mechanical properties, and is suitable for producing devices by an injection molding method. The method has the advantages of simple preparation process, low equipment requirement and applicability to industrial production.

Description

technical field [0001] The invention belongs to the field of bonded magnetic composite materials, and relates to a method for preparing a polyamide / sarmium-iron-nitrogen magnetic composite material with high toughness, high magnetic performance and high fluidity, which is suitable for injection molding. Background technique [0002] Injection magnets are produced by melting, blending, extruding and granulating organic polymer resin and magnetic powder. Commonly used polymer resins include polyamide (PA6, PA66, PA12, PA11, PA612) series, polypropylene (PP), polyphenylene sulfide (PPS), polyethylene (PE), polyester (PBT, PET), etc.; Magnetic powder includes neodymium iron boron (Nd-Fe-B), iron nitrogen (Sm-Fe-N), ferrite (FeO) and so on. [0003] Polyamide resin is an engineering plastic with excellent mechanical properties and processing properties. Compared with polyphenylene sulfide and polyester, it has excellent processing and mechanical properties; it has higher heat re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L23/08C08L77/00C08L23/16C08L51/06C08L83/04C08K9/10C08K9/04C08K3/28B29B9/12B29B9/16B29B9/06
CPCB29B9/06B29B9/12B29B9/16C08K2201/01C08L77/02C08L77/06C08L2205/02C08L2205/035C08L23/0815C08L51/06C08L83/04C08K9/10C08K9/04C08K3/28C08L77/00C08L23/16
Inventor 车声雷姜力强郑精武陈海波董玉欣
Owner 杭州海声科技有限公司
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