Capacitor Paper

Product Introduction:

Capacitor Paper is a type of insulating paper used exclusively for making paper capacitors. It is made from unbleached sulphatesoftwood pulp without any auxillary materials and pulped with high viscosity, then made on a specialized long net thin pagepaper machine and super calendered. The water used for production must be treated by ion exchange method to make thecontent of copper, iron and chlorine ions extremely low. It is rolled paper, which is uniform, tight, well-proportioned and withoutnoles. The paper is as thin as a cicada wing but with high mechanical strength, excellent air permeablity, electrolyte absorptionperformance, good chemical purity. Its PHis close to neutral with excellent physical and electrical properties. It has specificrequirements for breakdown voltage and conductive particles.

Key Performance Requirements

High Purity: Minimal impurities (especially metal ions and conductive particles) to prevent chemical reactions or electrical breakdown.
Physical Uniformity: Extremely thin (ranging from a few to dozens of microns) with uniform density to ensure an even electric field.
Electrical Properties: High dielectric strength (breakdown voltage) and a very low dissipation factor.
Excellent Impregnability: High porosity is required so that electrolytes or insulating impregnants can penetrate quickly and evenly.

Classification & Applications

Capacitor Paper is a specialized type of industrial technical paper used as a dielectric or separator in the manufacturing of various capacitors.

Based on its application, it is generally divided into two categories:
Power Capacitor Paper (Dielectric Paper): Used in high or low-voltage power capacitors as a solid dielectric between electrodes. It is typically impregnated with insulating oil or wax to enhance its dielectric strength.
Electrolytic Capacitor Paper (Separator Paper): Specifically designed for aluminum electrolytic capacitors. It sits between the anode and cathode foils to store the electrolyte and prevent physical short-circuiting.

Parameter Of  Capacitor Paper:

Production & Material

Raw Material: Usually made from highly purified, unbleached chemical wood pulp (such as softwood pulp).
Manufacturing: Produced on specialized paper machines in cleanroom environments with ultra-pure water to maintain strict insulation standards.

PDF DOWNLOAD:Capacitor Paper  data sheet