Research report on capacitor film

How do you measure a capacitor's life performance & sustainability?

The capacitor's life performance and sustainability can be monitored and analyzed by measuring their impedance and dissipation factors. In general design, a capacitor's electrical leakage is characterized by its ESR, which is the sum of resistance due to metal contact (Rc), DC leakage (DF L /ωC), and dielectric loss of the polymer film (DF D /ωC).

Can polymer films be used as commercial capacitors?

Polymer films such as PEI, PTFE, PEEK via melt extrusion/stretching process, FPE, polyimide (PI), and polyacrylate via solution process has been further improved in their film quality and attempted to convert to commercial capacitors [ , , , ].

Can high-temperature polymer film rolls be used to develop capacitors?

4. Conclusions After several attempts to develop capacitors using high-temperature scaled-up PEI polymer film rolls (>1000 m in length and 550 mm in width), the authors have developed a technical path bridging the new polymer films with capacitor components overcoming various difficulties.

How to make high-performance capacitors for evaluation?

To make high-performance capacitors for evaluation, thinner films (<10 μm) as wide as >300 mm and as long as >1000 m are preferred. In reality, the periodic machine-direction wrinkles, or tin-can wrinkles, are often generated during production and rewinding. Figs.

What are the factors affecting film windings & capacitor fabrication?

The relevant film windings and capacitor fabrication depend on the availability of uniform and smooth large-scale film rolls, the ability of metallization and self-clearing, tensile strength against winding tension, and interconnectivity of capacitor end electrodes, and so on.

Can Pei films be converted to capacitors?

It is also effective to evaluate capacitance, dielectric loss, equivalent series resistance, and thermal cycling stability of capacitors. This work sheds some light on converting PEI films and other polymeric films to capacitors on a scale up fabrication effort.