BLOG

Judging Power Capacitor Quality from Metallized Film

Release time:

2024-08-28

Metallized film in essence is said to be in the polypropylene sheet evaporation of a layer of metal, metallized film is the key material raw materials for capacitors, its materials and processing technology decision-making power capacitors over-voltage and over-flow working ability. Power capacitor quality in a sense by the quality of the metallized film decision-making, according to the metalized pole piece of commonly used metal raw materials are not the same, now on the market generally metallized film is divided into the following categories:

Judging Power Capacitor Quality from Metallized Film

1. Zinc: zinc metal is relatively light, photoelectric catalytic defense is good, so the majority of power capacitor metallization film with zinc metal, but because of the monolithic zinc is more brittle, and relatively hard, very easy to air oxidation, troublesome storage and transportation, and therefore there are certain limitations

2. Aluminum: Aluminum metal chemical stability, the net weight is lighter than zinc, with good electrical conductivity, heat transfer performance, air oxidation resistance and its ductility is part of the Friends of the application of power capacitors in commodities, but a single aluminum compression test compressive strength is low, volumetric attenuation coefficient is large, large loss, so a large number of zinc-aluminum alloy profiles used in the method of metallization film.

3. Zinc aluminum: the integration of the two photoelectrocatalytic defensibility and its organic chemical stability advantages, zinc aluminum metallization film compared to single zinc and single aluminum, impact resistance, attenuation coefficient and its depletion of the various levels are quite big improvement.

4. Silver, zinc and aluminum: silver conductivity and its heat transfer is indisputable, physical and chemical properties are relatively smooth, soft, rich ductility, can bear the harsh standards of work, so add the right amount of silver metallization film at all levels of the characteristics of a qualitative improvement, but relative to the first three metallization film, the application of the cost of fee is too high at this stage can only be selected by some dealers.