Why Is Rubber A Good Electrical Insulator

Pvc and nylon are now standard in most types of wire.

Why is rubber a good electrical insulator.

An electrical insulator is a material in which the electron does not flow freely or the atom of the insulator have tightly bound electrons whose internal electric charges do not flow freely. Because rubber is a good insulator it is used on the outside of wires that are used to conduct electricity. An insulator is a material that reduces or stops the flow of an electrical current. Types and history of electrical insulation.

But i want to know why rubber is a good insulator. 2 list of common insulating materials solids. Plastics pvc cresyl pthalate dehp and other plastics replaced rubber as an insulator for wires and other parts. Keeping electricity bound within the material is the main goal of an insulator making rubber a very good choice especially in the form of electrical mats.

Closed cell sponge rubber is good because of its low thermal conductivity and great temperature resistance. Clay ceramic porcelain this is the standard material for high voltage and rf insulators. For example wood makes a good insulator due to the air pockets in it s biological structure. Very little electric current will flow through it under the influence of an electric field this contrasts with other materials semiconductors and conductors which conduct electric current more easily.

I understand less dense materials make better insulators as insulators absorb trap heat. Because of the thermal properties spon. Why use electrical mats.