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Preparation method and product of amorphous nanocrystalline tape with insulating coating

An amorphous nanocrystalline and insulating coating technology, which can be used in coatings, devices for coating liquids on surfaces, special surfaces, etc. simple craftsmanship

Active Publication Date: 2022-07-15
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the prior art is that the insulating coating on the surface of the amorphous nanocrystalline strip for preparing the magnetic core is not resistant to high temperature

Method used

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  • Preparation method and product of amorphous nanocrystalline tape with insulating coating
  • Preparation method and product of amorphous nanocrystalline tape with insulating coating
  • Preparation method and product of amorphous nanocrystalline tape with insulating coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Mix 20 ml of TEOS (tetraethoxysilane) and 100 ml of anhydrous ethanol, slowly add 1 ml of deionized water, adjust the pH to 3-4 with 5% hydrochloric acid, maintain electric stirring at 60°C for 4 hours, and then adjust with 10% ammonia water The pH value reaches 8-10, electric stirring for 2-4 hours and ultrasonic dispersion for 30-60 minutes. During the stirring process, anhydrous ethanol is supplemented to maintain a stable concentration. Finally, it is diluted to 1 liter with deionized water to prepare a film-forming agent sol.

[0051] 1 ml of butyl silicate was added to 400 ml of deionized water and mechanically stirred for 0.5 hours, and 0.2 ml of sodium lauryl sulfate, 1 ml of 5% carboxyethyl cellulose, 1.5 g of sodium hexametaphosphate, 30% nanohydrogen 30 ml of the magnesium oxide suspension was adjusted to pH 8.5 with 10% ammonia water; the film-forming agent sol was added to mix, and the coating solution was fully stirred for 2 hours.

[0052] Use coating equ...

Embodiment 2

[0054] Mix 120 ml of TEOS (tetraethoxysilane) and 780 ml of anhydrous ethanol, add 2 ml of deionized water dropwise, adjust the pH to 3-4 with 5% hydrochloric acid, keep the water bath at 40 °C for 2 hours with electric stirring, and then add 10% ammonia water Adjust the pH value to 8-10, stir electrically for 2 hours and ultrasonically disperse for 60 minutes. During the stirring process, add anhydrous ethanol to maintain a stable concentration, and finally dilute to 1 liter with deionized water to prepare a film-forming agent sol.

[0055] 1 ml of butyl acetate was added to 100 ml of deionized water and mechanically stirred for 0.5 hours, and 0.5 ml of 6503 surfactant and 6 g of sodium hexametaphosphate were added successively, and the pH value was adjusted to 10 with 10% ammonia water; slowly added with a dropping funnel The film-forming agent sol was fully stirred for 2 hours to obtain a coating liquid.

[0056] Use coating equipment to coat the coating liquid on the amorp...

Embodiment 3

[0058] Add 7 grams of modulus 3 water glass to 100 ml of 70°C water, stir well, add 50 ml of 30% nano-alumina ethanol suspension, ultrasonically disperse for 30 minutes, and dilute to 500 ml with deionized water to prepare a pre-sol solution.

[0059] 0.8 g of sodium methylsilicate was added to 500 ml of deionized water and mechanically stirred for 0.5 hours, and 0.2 ml of sodium dodecylbenzenesulfonate, 1 ml of 5% carboxymethyl propyl cellulose, and 3 g of sodium hexametaphosphate were added in sequence. , adjust the pH value to 10 with 10% ammonia water; slowly pour the sol pre-preparation solution, and fully stir for 2 hours to obtain the coating solution.

[0060] Use coating equipment to coat the coating liquid on the amorphous nanocrystalline tape, adopt the coating method of dip coating, the complete immersion stroke is 0.6 m, the dip coating speed is 6 m / min, the drying temperature is 280 ℃, and the heat treatment is 580 ℃ 2 hours. The prepared insulating coating is c...

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Abstract

The invention belongs to the technical field of insulating materials, and particularly relates to a preparation method and product of an amorphous nanocrystalline tape with an insulating coating. The product obtained by the method of the invention has good insulation performance, small thickness of the insulation coating and high lamination coefficient, and can still meet the technological requirements under the lower coating thickness. The method of the invention also has the advantages of simple process, low cost and the like. The insulating coating obtained by the method of the present invention can withstand the heat treatment temperature of amorphous nanocrystalline at 600° C. for a long time, and adopts various additive systems and post-treatment processes to ensure the adhesion and insulating layer of the insulating coating and the amorphous nanocrystalline tape. Integrity and low thickness with good electrical insulating properties.

Description

technical field [0001] The invention belongs to the technical field of insulating materials, and particularly relates to a preparation method and product of an amorphous nanocrystalline tape with an insulating coating. Background technique [0002] Amorphous nanocrystalline ribbons are widely used in the preparation of magnetic cores for equipment operating under high frequency alternating magnetic fields. The loss of the magnetic core material working under the alternating magnetic field is one of the important indicators to determine the performance of the magnetic core, which mainly comes from the hysteresis loss and the eddy current loss. Hysteresis loss is the main loss when working at low frequency; the main loss at high frequency is the eddy current loss caused by the induced electric field in the alternating magnetic field, and the eddy current loss is the N power of the frequency of the alternating magnetic field (N=1.3-2 ), the proportionality coefficient is propo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/25C09D7/63C09D7/65C09D7/61B05D5/12
CPCC09D1/00C09D5/00C09D7/63C09D7/65C09D7/61B05D5/12C08K2201/011C08K2003/2224
Inventor 刘迎春卢琳刘天成陈非非潘贇贾春波李广敏
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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