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Arc-extinguishing material for fuse and preparation method of arc-extinguishing material

An arc-extinguishing material and fuse technology, applied in the manufacture of fuses, electrical components, circuits, etc., can solve the problems of fast heat dissipation, rough surface of quartz sand, and large thermal conductivity, so as to improve the breaking capacity and suppress the formation and diffusion of arcs Effect

Active Publication Date: 2013-11-20
东莞市博钺电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, quartz sand has the following problems as a filler for fuses: (1), as a mineral, quartz sand is greatly affected by the place of origin, and metal impurities such as iron are difficult to remove; (2), the surface of quartz sand is rough, and when the fuse is assembled, it is difficult to remove It is difficult to control the uniformity of filling density, which will affect the breaking effect; (3), the thermal conductivity is large, and the heat dissipation is fast, making it difficult for the fuse to break low overload

Method used

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  • Arc-extinguishing material for fuse and preparation method of arc-extinguishing material

Examples

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Embodiment 1

[0034] An arc extinguishing material for a fuse comprises 200 parts by weight of microcrystalline silicon dioxide (1000 mesh), 46 parts of microcrystalline cellulose, 72 parts of silicone resin adhesive and 200 parts of water.

[0035] A method for preparing the arc extinguishing material for the fuse; comprising the following preparation steps:

[0036] Mix the amount of microcrystalline silicon dioxide, microcrystalline cellulose, silicone resin adhesive and water, knead into a dough after mixing, and then use extrusion equipment (temperature is 5 ~ 30 ° C, pressure is 5 ~8 kg) extrude the above dough mixture, and finally roll into a ball to obtain the arc extinguishing material.

Embodiment 2

[0038] An arc extinguishing material for a fuse, comprising 200 parts by weight of amorphous silicon dioxide (700 mesh), 50 parts of microcrystalline cellulose, 68 parts of silicone resin adhesive and 300 parts of water.

[0039] The method for preparing the arc extinguishing material for the fuse is the same as that in Example 1.

Embodiment 3

[0041] An arc-extinguishing material for a fuse, comprising 250 parts by weight of silicon dioxide (including 50 parts of 1000-mesh microcrystalline silicon dioxide, 200 parts of 700-mesh amorphous silicon dioxide), 45 parts of microcrystalline cellulose, modified 70 parts of permanent bisphenol A / F liquid epoxy resin and 250 parts of water.

[0042] The method for preparing the arc extinguishing material for the fuse is the same as that in Example 1.

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Abstract

The invention relates to the technical field of arc-extinguishing materials, in particular to an arc-extinguishing material for a fuse and a preparation method of the arc-extinguishing material. The arc-extinguishing material is obtained by mixing silicon dioxide, microcrystalline cellulose, liquid resin and water, extruding through extrusion equipment and then rolling to form a sphere. The component purity and filling density of a filling material of the fuse are effectively controlled, and corresponding heat conduction coefficients can be configured according to the characteristic requirement of the fuse; and an electric arc can be effectively prevented from being formed and diffused, and the breaking capacity of the fuse is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of arc extinguishing materials, in particular to an arc extinguishing material for a fuse and a preparation method thereof. Background technique [0002] Fuse refers to an electrical appliance that fuses the fuse with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. A fuse is a current protector that melts the melt with the heat generated by itself after the current exceeds a specified value for a period of time, thereby disconnecting the circuit. Fuses are widely used in high and low voltage power distribution systems and control systems, as well as electrical equipment. As short circuit and overcurrent protectors, fuses are one of the most commonly used protection devices. [0003] The fuse is mainly composed of melt, fuse tube and external filler. Existing low-voltage fuses usually use high-purity quartz sand as the arc-extinguishing material under h...

Claims

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Application Information

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IPC IPC(8): H01H85/38H01H69/02
Inventor 何旭斌郭晓冬何旭添
Owner 东莞市博钺电子有限公司
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