Preparation process of silica gel magnetic ring

A preparation process and technology of silica gel, which is used in the manufacture of inductors/transformers/magnets, metal processing equipment, electrical components, etc., can solve problems such as high-frequency characteristics enhancement, and achieve high-frequency characteristics enhancement, wide application prospects, and good adhesion performance. Effect

Pending Publication Date: 2022-03-25
强新正品(苏州)环保材料科技有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The Chinese patent application number is CN202110380591.X, which discloses a preparation process of a high-impedance magnetic ring. The high-impedance magnetic ring is made of raw materials with the following weight ratio: Fe2O363-65, NiO 8-10, ZnO 21.5-23, CuO 3~5, Co2O30.5~1.0, the technical key is to add the dopant Co2O3, which improves the impedance characteristics of the material, and does not use the organic insulating medium silica gel as the insulating agent and binder to bond the magnetic powder together to increase the strength of the magnetic powder core. , Enhanced high-frequency characteristics

Method used

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  • Preparation process of silica gel magnetic ring

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Embodiment 1

[0032]The preparation of described silica gel, comprises the steps:

[0033] (1) The silica gel includes the following components in parts by mass: 60 parts of methyl block room temperature vulcanized silicone rubber, 3.5 parts of MQ resin, 4.0 parts of fumed silica, 0.8 parts of coupling agent KH570, ethyl orthosilicate 0.6 parts, 0.3 parts of dibutyltin dilaurate;

[0034] (2) Add MQ resin dissolved in n-hexane, fumed silica, and coupling agent KH570 into the methyl block room temperature vulcanized silicone rubber, stir and mix on a high-speed disperser for 1 hour, after mixing evenly, put it in a vacuum drying oven, Dry at 30° C. to remove n-hexane, and vacuumize for 20 min to obtain a mixture;

[0035] (3) Add ethyl orthosilicate and dibutyltin dilaurate to the above mixture, stir and mix on a high-speed disperser for 30 minutes, vacuumize and defoam, inject into a mold, open the mold after curing, and take it out to obtain silica gel.

Embodiment 2

[0037] The preparation technology of silica gel magnetic ring comprises the steps:

[0038] (1) alloy ingot: the typical composition of the master alloy is (Fe 0.76 Si 0.09 B 0.1 P 0.05 ) 98.1 Nb 0.8 Cu 0.6 Tb 0.3 La 0.2 ; According to the above proportioning, weigh Fe, Si, Nb, FeB, Cu, Fe-P, Tb, La high-purity raw materials, Fe, Si, Nb, FeB, Cu, Fe-P, Tb, La high-purity raw materials Place in acetone / ethanol solution, remove surface oil and other organic matter by ultrasonic cleaning, and then dry; before smelting, first strictly check the cleanliness of the non-consumable vacuum arc melting furnace cavity, clean the furnace cavity, and then put Fe, Si, Nb , FeB, Cu, Fe-P, Tb, La high-purity raw materials are put into the crucible, and the low-melting and volatile raw materials are put into the crucible first; the furnace door is closed and the mechanical pump and the diffusion pump are used to evacuate in order to make the oxygen partial pressure reach 5x10 -2 Belo...

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Abstract

A preparation process of a silica gel magnetic ring comprises the following steps: (1) alloy ingot casting: taking high-purity raw materials of Fe, Si, Nb, FeB, Cu, Fe-P, Tb and La, putting the raw materials into a crucible, and smelting the raw materials through a non-self-consumption vacuum arc smelting furnace to obtain an alloy ingot; (2) atomization powder preparation: putting the alloy ingot into vacuum suspension smelting gas atomization powder preparation equipment for atomization powder preparation; (3) coating and pressing; and (4) heat treatment: putting the silica gel magnetic ring blank into a vacuum annealing furnace for annealing to obtain the silica gel magnetic ring. The preparation process of the silica gel magnetic ring is reasonable in step design, Fe, Si, Nb, FeB, Cu, Fe-P, Tb and La high-purity raw materials are smelted to prepare an iron-based nanocrystalline alloy with high amorphous forming ability and soft magnetic performance, amorphous magnetic powder is prepared through a gas atomization method, and the silica gel magnetic ring is prepared through silica gel coating, pressing and nanocrystalline annealing. The magnetic conductivity, the saturation flux density, the direct current bias performance and the mechanical property are improved, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of preparing a silica gel magnetic ring, and in particular relates to a preparation process of a silica gel magnetic ring. Background technique [0002] Electromagnetic waves radiated and leaked by electronic equipment will seriously interfere with the normal operation of other electronic equipment, resulting in equipment dysfunction and transmission errors. Therefore, reducing the electromagnetic interference of electronic equipment has been a problem that must be considered. [0003] Magnetic ring, a ring-shaped magnetic conductor, is an anti-interference component commonly used in electronic circuits. It has a good suppression effect on high-frequency noise. Under the action of the magnetic ring, it can make normal and useful signals pass through very well. It can well suppress the passage of high-frequency interference signals, and the magnetic ring is low in cost and widely used. [0004] At present, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/10B22F9/08H01F41/02B22F1/10B22F3/02B22F3/24
CPCB22F5/106H01F41/02B22F9/082B22F3/02B22F3/24B22F2003/248
Inventor 闫森源
Owner 强新正品(苏州)环保材料科技有限公司
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