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A kind of highly conductive anti-breakdown capacitor and its preparation method

A technology of breakdown resistance and capacitors, which is applied in the field of capacitors, can solve problems such as poor breakdown resistance and affect the service life of capacitors, so as to improve breakdown resistance, strong breakdown strength and arc resistance, and improve performance stability Effect

Active Publication Date: 2021-06-22
铜陵市佳龙飞电容器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the existing capacitors have high conductivity and other properties, they have poor breakdown resistance, and long-term use will easily affect the service life of the capacitor

Method used

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  • A kind of highly conductive anti-breakdown capacitor and its preparation method
  • A kind of highly conductive anti-breakdown capacitor and its preparation method

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Effect test

Embodiment 1

[0023] The present invention of this embodiment provides a high-conductivity breakdown-resistant capacitor, including a dielectric base film, the dielectric base film is wound into an end face of a core, the end face of the core is covered with a breakdown-resistant film, and the capacitor is also Including filler and shell;

[0024] The preparation method of the anti-puncture film of this embodiment is:

[0025] Step 1: Weighing of raw materials: 40 parts of cardanol glycidyl ether, 20 parts of high-density polyethylene, 10 parts of nano-modified diatomaceous earth, 5 parts of hydroxypropyl starch, 3 parts of poly(sebacic acid-glycerol) ester ;

[0026] In step 2, cardanol glycidyl ether, high-density polyethylene, and poly(sebacic acid-glycerol) ester are heated up to 105° C., kept for 35-45 minutes, and then nano-modified diatomaceous earth and hydroxypropyl starch are added thereto to The raw materials are fully mixed, the stirring speed is 110-1250r / min, the stirring ti...

Embodiment 2

[0035] The present invention of this embodiment provides a high-conductivity breakdown-resistant capacitor, including a dielectric base film, the dielectric base film is wound into an end face of a core, the end face of the core is covered with a breakdown-resistant film, and the capacitor is also Including filler and shell;

[0036] The preparation method of the anti-puncture film of this embodiment is:

[0037] Step 1: Weighing of raw materials: 50 parts of cardanol glycidyl ether, 30 parts of high-density polyethylene, 20 parts of nano-modified diatomaceous earth, 9 parts of hydroxypropyl starch, 5 parts of poly(sebacic acid-glycerol) ester ;

[0038] Step 2: Raise the temperature of cardanol glycidyl ether, high-density polyethylene, and poly(sebacic acid-glycerol) ester to 115° C., keep it warm for 45 minutes, and then add nano-modified diatomite and hydroxypropyl starch to it until the raw materials are fully Mixing, stirring speed 1250r / min, stirring time 55min, to ob...

Embodiment 3

[0047] The present invention of this embodiment provides a high-conductivity breakdown-resistant capacitor, including a dielectric base film, the dielectric base film is wound into an end face of a core, the end face of the core is covered with a breakdown-resistant film, and the capacitor is also Including filler and shell;

[0048] The preparation method of the anti-puncture film of this embodiment is:

[0049] Step 1: Weighing of raw materials: 45 parts of cardanol glycidyl ether, 25 parts of high-density polyethylene, 15 parts of nano-modified diatomaceous earth, 7 parts of hydroxypropyl starch, 4 parts of poly(sebacic acid-glycerol) ester ;

[0050] Step 2: Raise the temperature of cardanol glycidyl ether, high-density polyethylene, and poly(sebacic acid-glycerol) ester to 110°C, keep it warm for 40 minutes, and then add nano-modified diatomaceous earth and hydroxypropyl starch to it until the raw materials are fully Mixing, the stirring speed is 1200r / min, and the stir...

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Abstract

The invention discloses a preparation method of a high-conductivity breakdown-resistant capacitor, which comprises the following steps: coating the end surface of a core with a breakdown-resistant film, using corona treatment, and then irradiating with ultraviolet light, and then sending it into the plastic shell Then add filler thereto, then place it in a high-pressure reactor of 10-20MPa and let it stand for 1-2h. After standing, it will be stored at 35-45°C for 20-30min. After the preservation, the present invention is obtained. High conductivity breakdown capacitors. The breakdown-resistant film used in the capacitor of the present invention is made of cardanol glycidyl ether and high-density polyethylene as mutual ingredients, which can improve the breakdown resistance of the matrix, and at the same time, the added diatomite can be interspersed into the film material after modification. Among them, the tightness between raw materials is improved, and the breakdown resistance performance of the material is further improved.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a high-conductivity breakdown-resistant capacitor and a preparation method thereof. Background technique [0002] A capacitor is made up of two electrodes with a dielectric material between them. The dielectric material is a kind of dielectric. When it is placed in the electric field between two parallel plates with equal opposite charges, polarized charges are generated on the surface of the medium due to polarization, so that the charges bound on the plates The corresponding increase keeps the potential difference between the plates unchanged. This is why capacitors have capacitive characteristics. The electricity Q stored in the capacitor is equal to the product of the capacitance C and the potential difference U between the electrodes. The capacitance is proportional to the area of ​​the plate and the dielectric constant ε of the dielectric material, and inversely propo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/32H01G4/002H01G4/224C08J5/18C08L23/06C08L3/08C08L67/00C08K5/1515C08K9/00C08K3/34
CPCC08J5/18C08J2323/06C08J2403/08C08J2467/00C08K3/34C08K5/1515C08K9/00C08K2201/011H01G4/002H01G4/224H01G4/32
Inventor 陈家宝
Owner 铜陵市佳龙飞电容器有限公司