Insulating Paper with Excellent Electrical Properties and Thermal Stability

Insulating paper is a thin sheet of insulating material formed from plant fibers, mineral fibers, synthetic fibers or a mixture thereof by depositing fibers on a paper machine by water or other medium. Because it has high tear strength, low elongation and good insulation, it is widely used as insulation material in motors, cables, capacitors and transformers. It is also used for insulation of laminates, composites and prepregs. The main constituent materials of the material.

It is precisely because of the special use of insulating paper that it must have some characteristics different from other paper types, including mechanical properties, electrical properties and thermal stability. In the actual use of insulating paper, it is often affected by various external forces, so it requires high mechanical properties, including tensile strength and elongation at break.

For insulating paper, thermal stability is also an important indicator to measure it, and it is also a major factor in the generation of low-voltage insulation aging, which determines its service life. Under normal operating conditions, the electric field strength has only a slight effect on the insulation aging process. When the insulating paper is used in a relatively high temperature environment for a long time, it will become brittle due to heat aging, and gradually lose its mechanical and electrical properties.