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A high-wear-resistant composite magnetic material for automobile ABS system and preparation method thereof

A composite magnetic material and ABS system technology, which is applied in the field of high wear-resistant composite magnetic material and preparation of automobile ABS system, can solve the problems of easy entry of sand and gravel, large magnetic friction loss, influence of magnetic performance inductive signal, etc., to save processing. Cost and processing time, high magnetic content, effect of improving production efficiency

Inactive Publication Date: 2019-01-25
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the widely used automotive ABS system control signal has problems such as easy entry of sand and gravel into the wheel hub, large magnetic friction loss with the same-sex rubber and plastic, and affected magnetic performance and perceptual signals.

Method used

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  • A high-wear-resistant composite magnetic material for automobile ABS system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) First add iron salt and lanthanum salt into the solvent, stir and dissolve until the solution is uniform and transparent, then add polyvinylpyrrolidone, mix and stir evenly, and obtain a transparent and viscous spinning stock solution; iron salt is ferric nitrate; lanthanum The salt is lanthanum nitrate; the solvent is ethanol;

[0032] Wherein: 13 parts by weight of iron salt, 13 parts by weight of lanthanum salt, 52 parts by weight of solvent, 22 parts by weight of polyvinylpyrrolidone;

[0033] (2) Electrospinning the spinning stock solution obtained in step (1) to obtain composite nanofibers; the voltage of electrospinning is 13kV, the receiving distance is 25cm, and the average diameter of the composite nanofibers is 180nm;

[0034] (3) Segmentally calcined the composite nanofibers prepared in step (2) to obtain lanthanum ferrite nanotubes; the segmented calcination is divided into three stages, the temperature of the first stage is 430°C, the holding time is 5...

Embodiment 2

[0039] (1) First add iron salt and lanthanum salt into the solvent, stir and dissolve until the solution is uniform and transparent, then add polyvinylpyrrolidone, mix and stir evenly, and obtain a transparent and viscous spinning stock solution; iron salt is ferric sulfate; lanthanum The salt is lanthanum chloride; the solvent is acetone;

[0040] Wherein: 11 parts by weight of iron salt, 11 parts by weight of lanthanum salt, 57 parts by weight of solvent, and 21 parts by weight of polyvinylpyrrolidone;

[0041] (2) Electrospinning the spinning stock solution obtained in step (1) to obtain composite nanofibers; the voltage of electrospinning is 11kV, the receiving distance is 22cm, and the average diameter of the composite nanofibers is 150nm;

[0042] (3) Segmentally calcined the composite nanofibers prepared in step (2) to obtain lanthanum ferrite nanotubes; the segmented calcination is divided into three stages, the temperature of the first stage is 410°C, the holding time...

Embodiment 3

[0047] (1) First add iron salt and lanthanum salt into the solvent, stir and dissolve until the solution is uniform and transparent, then add polyvinylpyrrolidone, mix and stir evenly, and obtain a transparent and viscous spinning stock solution; the iron salt is ferric chloride; Lanthanum salt is lanthanum carbonate; Solvent is chloroform;

[0048] Wherein: 13 parts by weight of iron salt, 14 parts by weight of lanthanum salt, 49 parts by weight of solvent, 24 parts by weight of polyvinylpyrrolidone;

[0049] (2) Electrospinning the spinning stock solution obtained in step (1) to obtain composite nanofibers; the voltage of electrospinning is 14kV, the receiving distance is 28cm, and the average diameter of the composite nanofibers is 250nm;

[0050] (3) Segmentally calcined the composite nanofibers prepared in step (2) to obtain lanthanum ferrite nanotubes; the segmental calcination is divided into three stages, the first stage temperature is 440°C, the holding time is 4h, th...

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Abstract

A high-wear-resistant composite magnetic material for automobile ABS system and its preparation method are disclosed. The method Includes such steps as adding ferric salt, lanthanum salt and polyvinylpyrrolidone into solvent to obtain spinning stock solution, adding ferric salt, lanthanum salt and polyvinylpyrrolidone into solvent to obtain spinning stock solution, adding ferric salt, lanthanum salt and polyvinylpyrrolidone into solvent to obtain spinning stock solution. (2) electrospinning to obtain composite nanofibers; 3. That lanthanum ferrite nanotube are prepared by subsection calcination; 4) mix that lanthanum ferrite nanotube with distilled wat, sodium hydroxide, nickel salt and ethanol to react, separating magnetically the calcined product, washing with wat and drying to obtain ahigh-wear-resistant composite magnetic material for automobile ABS system. The composite magnetic material prepared by the invention is nickel oxide grown on the surface of lanthanum ferrite nanotube,Lanthanum ferrite nanotube magnetic material has uniform morphology, large specific surface area, high magnetic content and excellent magnetic responsiveness. Nickel oxide improves the wear resistance of the material, and the material is easy to grind and process, which can effectively save the processing cost and time and improve the production efficiency of enterprises.

Description

technical field [0001] The invention relates to the field of automobile materials, and discloses a high wear-resistant composite magnetic material used in automobile ABS systems and a preparation method thereof. Background technique [0002] Anti-lock braking system is called ABS for short. The function is to automatically control the braking force of the brake when the car is braking, so that the wheel is not locked and is in a state of rolling and sliding, so as to ensure the adhesion between the wheel and the ground at the maximum value. When braking, ABS can quickly judge the locked state of the wheel according to the speed signal sent by each wheel speed sensor, and close the normally open input solenoid valve on the wheel that starts to lock, so that the braking force remains unchanged. If the brake is locked, the normally closed output solenoid valve will be opened, and the brake pressure on the wheel will move down rapidly due to the pipeline directly leading to the...

Claims

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Application Information

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IPC IPC(8): H01F41/00H01F1/01C01G49/00C01G53/04
CPCH01F41/00C01G49/00C01G53/04H01F1/01
Inventor 陈庆司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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