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Manufacture method of mica paper for capacitor

A manufacturing method, the technology of mica paper, applied in the direction of fixed capacitor parts, circuits, electrical components, etc., can solve the problems that cannot be used for production volume, low dielectric strength, etc., and achieve small volume, high insulation resistance, and thin thickness Effect

Inactive Publication Date: 2012-08-29
SICHUAN MEIFENG MICA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the mica paper produced by the existing method has the performance defect of low dielectric strength, and cannot be used to produce mica capacitors with small volume and breakdown resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 adopts the inventive method to make mica paper

[0045]Using artificially selected raw materials, select high-quality natural muscovite fragments as raw materials, with an area of ​​5cm 2 About, thickness 1~2mm. Weathered mica, rusty mica, stained mica, ore and foreign impurities are not allowed in the raw materials, and the quantity is 20kg / bag. Preheat the roasting furnace (industrial resistance furnace produced by Shanghai Electric Furnace Factory, model: RG2-24-9) to 750°C, open the furnace cover, pour a pack of 20kg raw materials and close the furnace cover, and roast in the rotating state of the furnace body Pour it out after 40 minutes. Cool to room temperature and screen the roasted raw materials through a drum sieve to remove the powder, then prepare a sulfuric acid solution with a mass concentration of 3% in a steamer, pour the roasted raw materials into the solution, and heat to boiling for chemical treatment , processing time 60min. The chem...

Embodiment 2

[0046] Embodiment 2 adopts the inventive method to manufacture mica paper

[0047] Using artificially selected raw materials, select high-quality natural muscovite fragments as raw materials, with an area of ​​5cm 2 About, thickness 1~2mm. Weathered mica, rusty mica, stained mica, ore and foreign impurities are not allowed in the raw materials, and the quantity is 20kg / bag. Preheat the roasting furnace (industrial resistance furnace produced by Shanghai Electric Furnace Factory, model: RG2-24-9) to 800°C, open the furnace cover, pour a pack of 20kg raw materials and close the furnace cover, and roast in the state of furnace rotation Pour it out after 45 minutes. Cool to room temperature and screen the roasted raw materials through a drum sieve to remove the powder, then prepare a sulfuric acid solution with a mass concentration of 4% in a steamer, pour the roasted raw materials into the solution, and heat to boiling for chemical treatment , processing time 50min. The proce...

Embodiment 3

[0048] Embodiment 3 adopts the inventive method to make mica paper

[0049] Using artificially selected raw materials, select high-quality natural muscovite fragments as raw materials, with an area of ​​5cm 2 About, thickness 1~2mm. Weathered mica, rusty mica, stained mica, ore and foreign impurities are not allowed in the raw materials, and the quantity is 20kg / bag. Preheat the roasting furnace (industrial resistance furnace produced by Shanghai Electric Furnace Factory, model: RG2-24-9) to 850°C, open the furnace cover, pour in a pack of 20kg raw materials, close the furnace cover, and roast in the rotating state of the furnace body Pour it out after 50 minutes. Cool to room temperature and screen the roasted raw materials through a drum sieve to remove the powder, then prepare a sulfuric acid solution with a mass concentration of 5% in a steamer, pour the roasted raw materials into the solution, and heat to boiling for chemical treatment , processing time 40min. The pro...

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Abstract

The invention belongs to the field of insulation materials and particularly relates to a manufacture method of mica paper for a capacitor. The manufacture method solves the technical problems that the dielectric intensity of mica paper produced by the existing method is low, and the mica paper is not suitable for producing small-sized and breakdown-resistant mica capacitance. The manufacture method of the mica paper comprises the following steps of a, mica raw material selection; b, roasting; c, chemical treatment; d, pulping; and e, papermaking. The mica paper for the capacitor prepared by the method has the advantages that the thickness is thin, the tension stress is high, the dielectric intensity is high, the mica paper can be used for producing small-sized and breakdown-resistant mica capacitance, and a new insulation material is provided for the electromechanical field.

Description

technical field [0001] The invention belongs to the field of insulating materials, and in particular relates to a method for manufacturing mica paper for capacitors. Background technique [0002] Mica is a general term for a class of hydrous aluminosilicates. Mica has high electrical strength, low dielectric loss, high surface resistance and volume resistance, and has excellent properties such as heat resistance, water resistance, chemical stability, elasticity, high peelability, great shear resistance and tensile strength. , is currently widely used in the field of motor electrical insulation. The most industrial value of mica is muscovite [KAl 2 (AISi 3 o 10 )(OH) 2 ] and phlogopite [KMg 3 (AISi 3 o 10 )(OH) 2 ]. [0003] Mica capacitor is a commonly used capacitor. The existing mica capacitor is sprayed with a silver layer on the metal foil or mica sheet as the electrode plate. Made of resin. However, the production cost of mica chip capacitors is high, the ap...

Claims

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Application Information

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IPC IPC(8): H01B19/00H01B17/60H01G4/002
Inventor 彭光成魏荣刚文学华廖建
Owner SICHUAN MEIFENG MICA IND
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