Ultra-thin high-temperature-resistant polypropylene capacitor metallized film and preparation method thereof

Abstract

The invention discloses an ultra-thin high-temperature-resistant polypropylene capacitor metallized film. The ultra-thin high-temperature-resistant polypropylene capacitor metallized film is characterized in that the ultra-thin high-temperature-resistant polypropylene capacitor metallized film is prepared by the following raw materials, by weight, 200 parts of isotactic polypropylene, 1-2 parts of antioxygen 330, 1-2 parts of triethanolamine, 2-3 parts of Carbomer, 2-3 parts of double fourteen-carbon alcohol ester, 2-3 parts of n-hexacosanyl isovalerate, 6-8 parts of tributyl citrate, 1-2 parts of stearic acid, 1-2 parts of anti-aging agent RD and 5-6 parts of auxiliaries. The ultra-thin high-temperature-resistant polypropylene capacitor metallized film is simple in processing technic, a thin-film capacitor made of the ultra-thin high-temperature-resistant polypropylene capacitor metallized film is small in contact resistance, products are made to be good in characteristic, even in thickness and not prone to separating, the manufactured capacitor is small in size and has good high-temperature stability, and the ultra-thin high-temperature-resistant polypropylene capacitor metallized film has good current-carrying, inrush current resistant and pulse resistant capacity and is long in service life.

Description

technical field [0001] The invention relates to the field of capacitor manufacturing, in particular to a metallized film of an ultra-thin high-temperature-resistant polypropylene capacitor and a preparation method thereof. Background technique [0002] Biaxially oriented polypropylene film for capacitors has high mechanical and electrical properties. Compared with capacitors made of ordinary films, capacitors made of polypropylene films have low thermal shrinkage, stable performance, high temperature resistance, High voltage resistance, breakdown prevention and other significant advantages make capacitors made of polypropylene film more and more widely used. [0003] The existing polypropylene capacitor film has a relatively large shrinkage rate and poor temperature resistance. As the working time of the capacitor wound by this film increases, the internal temperature rises rapidly, resulting in a sharp decline in the stability of the capacitor. It even causes the capacitor...

AI Technical Summary

Problems solved by technology

[0003] The existing polypropylene capacitor film has a relatively large shrinkage rate and poor temperature resistance. As the working time of the capacitor wound by this film increases, the internal temperature rises rapidly, resulting in a sharp decline in the stability of the capacitor. It may even cause the capacitor to fail, bringing serious safety hazards to the electrical machine or the power grid