Electrical insulation paper
Electrical insulation paper is a special paper that is used as an insulating material on guide wires or in electronic components, especially capacitors . It is a very strong paper, mostly impregnated with synthetic resin , which is mainly made from very finely ground cellulose and, more rarely, with rag surcharge ("rags"). It must be pore-free and must not contain any fillers or conductive impurities such as metals or carbon , salts or acids.
use
The two most important uses for electrical insulation paper are as cable paper and as electrolyte paper . Cable paper is wrapped in a spiral around the conductor wire and insulates it from the environment. Cable paper is used in particular for underground cables , but is increasingly being replaced by plastics such as polyethylene in this area of application . The paper used must have a high longitudinal strength for this.
Electrolyte papers, which are used to wind paper and metal-paper capacitors , also have to be highly absorbent and highly pure; freedom from pores and a uniform thickness are also a prerequisite. Due to the high demands on paper quality, electrolyte paper is one of the most expensive papers.
literature
- Association of German Paper Mills eV: Paper ABC. Association of German Paper Mills eV, 2005.