Phenolic paper laminate is composed of insulating impregnated paper (TFz 62) or cotton fiber impregnated paper (1TZ- 63) impregnated with phenolic resin laminate formed by hot pressing, two surface adhesive tape can be attached to a single alkali free glass tape, the side is coated with copper foil. Printed circuit boards for radio equipment.
Copper clad phenolic glass cloth laminate is non alkali glass cloth laminate impregnated with epoxy phenolic resin formed by hot pressing, one or both sides coated with copper foil, has the advantages of light weight, good electrical and mechanical properties, easy processing etc.. The surface of the plate is light yellow, and if the three cyanogen amine is used as a curing agent, the surface of the plate is light green and has good transparency. Printed circuit boards are mainly used in radio equipment with high operating temperature and operating frequency.
There are many kinds of ccl. According to different material can be divided into paper substrate, glass cloth substrate and synthetic fiber board; according to the different binder resin is divided into phenolic, epoxy, polyester and polytetrafluoroethylene; use can be divided into general and special type.
The main material of the printed circuit board (PCB) is a copper clad plate, and the copper clad laminate (CCL) is made up of substrate, copper foil and adhesive. The substrate is composed of polymer insulation layer of synthetic resin and reinforcing material; the surface of the substrate is covered with a layer of high conductivity, good welding of pure copper foil, commonly used thickness of 35 ~ 50 / Ma; copper foil covered in copper clad laminate substrate side called single copper, copper clad laminate substrate two are covered with copper foil the double-sided copper clad laminate; copper foil can securely covered on the substrate by the adhesive to complete. There are three kinds of copper clad laminate, 1.0mm, 1.5mm and 2.0mm.
