What is the PCB
The PCB is a structural laminate, which is obtained by hot pressing of cotton fabrics. Tissues, in turn, is impregnated with a thermoset binder based on phenol-formaldehyde resin. Sometimes as impregnation use polyester, phenol-formaldehyde, epoxy, polyimide, furan, silicone resins or thermoplastics.
However, thanks to cotton fabric this material has the compressive strength, high impact strength and is resistant mechanical processing: drilling, cutting or stamping.
All these qualities determine the scope of use of the PCB - manufacturing of parts, loaded by alternating electric and mechanical loads or by friction.
Additionally, the PCB is a great insulator.
In General, the properties of the material largely depend on the properties of the tissue and the binder constituting the PCB, and the technology of its manufacture.
In this connection distinguish textolite, organotoxicity, fiberglass plastics, asatellite, pretextuality and bushaltestelle. And the tissues themselves differ in their weave, thickness and surface density.
The scope of application of the PCB
The PCB has found application in many areas. For example, it is widely used in electrical and electronics as an insulating material or insulator.
Because of its abrasion and vibration resistance it is used for friction parts - bearings, bushings, rings, washers and so on. Some versions of the PCB used in the chemical industry for corrosive environments.
In addition it is used for work in transformer oil and in air under normal humidity of the environment at the current frequency of 50 Hz.
Machinery and equipment, details of which are made of PCB and its derivatives, significantly increase the productivity of the enterprise as a whole.
Distinguish between leaf and core PCB.
The PCB sheet is a polymer designed for laying buffer layer in electrical products. It is a composite compressed and impregnated with a resin composition cotton fabric.
The PCB core is a special form of layering of the same cotton material. This method of winding allows the use of PCB in the fields related to the work under high voltage.