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Thin film capacitor

A technology of thin film capacitors and capacitor cores, which is applied in the field of capacitors, can solve problems affecting the life of LEDs, etc., and achieve the effects of improving heat resistance, corrosion resistance, permittivity and storage performance

Active Publication Date: 2017-07-21
PUTIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metallized film capacitors are prone to two failure mechanisms: sudden failure and degenerative failure. The main reason for the failure mechanism of metallized film capacitors is that the dielectric material of the capacitor has defects or defects, which directly affects the life of the LED.

Method used

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Embodiment 1

[0025] A thin film capacitor, comprising a housing 1, solder pins 2 and a capacitor core 3, characterized in that the capacitor core 3 comprises a composite film 31, a double-sided metallized ZnAl film 32 and a gold-sprayed layer 33, the composite film 31. The double-sided metallized ZnAl films 32 are arranged in a staggered arrangement, and the double-sided metallized ZnAl films 32 are vapor-deposited on both sides of the composite film 31, and the outer end of the capacitor core 3 is provided with a gold-sprayed layer 33; the shell 1 is plastic shell. The edge of the double-sided metallized ZnAl film 32 is a thickened evaporation type, and the composite film 31 is prepared from the following raw materials in parts by weight:

[0026] 30 parts of polyethylene terephthalate; 13 parts of 2-bromo-3-nitrotoluene; 5 parts of silicon-containing polycarbonate resin; 2 parts of conductive carbon black; 20 parts of barium titanate; chemical resistance modification 0.5 parts of aceton...

Embodiment 2

[0028] A thin film capacitor, comprising a housing 1, solder pins 2 and a capacitor core 3, characterized in that the capacitor core 3 comprises a composite film 31, a double-sided metallized ZnAl film 32 and a gold-sprayed layer 33, the composite film 31. The double-sided metallized ZnAl films 32 are arranged in a staggered arrangement, and the double-sided metallized ZnAl films 32 are vapor-deposited on both sides of the composite film 31, and the outer end of the capacitor core 3 is provided with a gold-sprayed layer 33; the shell 1 is plastic shell. The edge of the double-sided metallized ZnAl film 32 is a thickened evaporation type, and the composite film 31 is prepared from the following raw materials in parts by weight:

[0029] 50 parts of polyethylene terephthalate; 16 parts of 2-bromo-3-nitrotoluene; 15 parts of silicon-containing polycarbonate resin; 6 parts of conductive carbon black; 40 parts of barium titanate; chemical resistance modification 5 parts of agent, ...

Embodiment 3

[0031] A thin film capacitor, comprising a housing 1, solder pins 2 and a capacitor core 3, characterized in that the capacitor core 3 comprises a composite film 31, a double-sided metallized ZnAl film 32 and a gold-sprayed layer 33, the composite film 31. The double-sided metallized ZnAl films 32 are arranged in a staggered arrangement, and the double-sided metallized ZnAl films 32 are vapor-deposited on both sides of the composite film 31, and the outer end of the capacitor core 3 is provided with a gold-sprayed layer 33; the shell 1 is plastic shell. The edge of the double-sided metallized ZnAl film 32 is a thickened evaporation type, and the composite film 31 is prepared from the following raw materials in parts by weight:

[0032] 40 parts of polyethylene terephthalate; 14.5 parts of 2-bromo-3-nitrotoluene; 10 parts of silicon-containing polycarbonate resin; 4 parts of conductive carbon black; 30 parts of barium titanate; chemical resistance modification 2.75 parts of ac...

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Abstract

The invention discloses a thin film capacitor. A capacitor core comprises a composite film, a double-side metalized ZnAl film, and a metal spraying layer. The composite film and the double-side metalized ZnAl film are arranged in a staggered manner. The double-side metalized ZnAl film is evaporated on two side surfaces of the composite film. Moreover, the outer end of the capacitor core is provided with the metal spraying layer. The composite layer is made of the following raw materials: polyethylene glycol terephthalate, 2-chloro-3-nitrotoluene, silicon-contained polycarbonate resin, conductive black, barium titanate, chemical resistant modifier, acetone, heat resistant agent, flame retardant synergist, cerous nitrate, chloro-series fire retardant, antioxygen, 3-cyano-5-fluborophenylboronic acid, nanocrystal cellulose, silver oxide, lactate cobalt, ammonium tetrathiomolybdate, sodium borohydride and inorganic nanoparticles. Through employing the self-made composite thin film, the capacitor is small in size, is light in weight, and is good in self-healing performance. The capacitor employs the technology of ZnAl edge thickening evaporation, is excellent in electrical performance, and is high in reliability.

Description

technical field [0001] The invention relates to the field of capacitors, in particular to a film capacitor. Background technique [0002] Capacitors are one of the most important components in LED products. In recent years, how to improve the performance and life of capacitors has become a major concern of various companies in the LED industry. Solving the problem that capacitors cannot match the long life of LEDs has been established by the industry. benchmark for research. Metallized film capacitor LED drive technology is a popular solution in the past few years, because the biggest feature of metallized film capacitors is the self-healing function. performance phenomenon. However, metallized film capacitors are prone to two failure mechanisms: sudden failure and degenerative failure. The main reason for the failure mechanism of metallized film capacitors is that the dielectric material of the capacitor has defects or defects, which directly affect the life of the LED. ...

Claims

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Application Information

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IPC IPC(8): H01G4/33H01G4/002C08L67/02C08L69/00C08L1/04C08K13/02C08K3/04C08K3/24C08K3/22C08K3/36C08K3/34C08K5/136C08K3/28C08K5/32C08K5/55
CPCC08K2201/001C08K2201/011C08L67/02C08L2201/02C08L2201/08C08L2203/16C08L2203/20C08L2205/035H01G4/002H01G4/33C08L69/00C08L1/04C08K13/02C08K3/04C08K3/24C08K3/22C08K3/36C08K3/346C08K5/136C08K3/28C08K5/32C08K5/55
Inventor 郑志霞黄元庆黄赛琴
Owner PUTIAN UNIV
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