A kind of manufacturing method of high temperature and high humidity safety film

Abstract

A manufacturing method of a high temperature and high humidity safety film, comprising the following steps: S1, pretreatment; S2, polarization treatment; S3, shielding treatment; S4, metallization treatment; S5, protective oil film treatment; S6, post treatment; The invention processes the film through a pre-processing device, improves the adhesion and compactness of the metal coating on the surface of the thin surface, makes the metallized film metal coating have better oxidation resistance, and makes the metallization resistant to high temperature and high humidity. The oil layer is properly cross-linked to form a protective oil film on the surface of the metal coating, which can well separate the metal layer from the water vapor and oxygen in the air, improve the oxidation resistance of the metal coating, and make the metallized film resistant to high temperature, high humidity, and high humidity. The design of shielding tape and safety film pattern improves the safety level of the capacitors with high temperature, high temperature and high humidity resistance, and has better explosion-proof performance, and the capacity of capacitors is more stable in high temperature and high humidity environments.

Description

technical field [0001] The invention relates to the field of high-temperature and high-humidity-resistant safety films, in particular to a manufacturing method of a high-temperature and high-humidity-resistant safety film. Background technique [0002] With the development of film capacitors, some application fields require capacitors to operate stably for a long time in a high temperature and high humidity environment without major changes in capacitor capacity. The safety film can be used in a high temperature and high humidity environment to ensure that the capacitor will not easily break down or catch fire. Use the double 85 test (temperature of 85 degrees and humidity of 85%) to detect the temperature and humidity resistance of the capacitor. The smaller the capacitance change after the test, the better, and the capacitance change rate is generally required to be less than or equal to 10%. (Capacitance change rate = (capacitance before test - capacity after test) / capac...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above problems and provide a method for making a high-temperature and high-humidity safety film, which solves the problems that the existing safety film is prone to breakdown when used on capacitors, the capacitor catches fire or bursts, and the service life of the capacitor is short.

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