What is the material of the circuit board
According to CCL flame retardant performance classification, can be divided into flame retardant (UL94 a VO, UL94 a V1 level) and non-flame retardant (UL94 a HB class) two types of boards. Nearly two years, with the environmental issues more attention, in the flame retardant CCL and separate a new non-brominated species of CCL species, can be called "green flame retardant cCL". With the rapid development of electronic product technology, the cCL has a higher performance requirements. Therefore, the performance classification from the CCL is divided into general performance CCL,
If the board used by the resin adhesive used in different classification, the common paper-based CCI. There are various types such as phenolic resin (XPc, XxxPC, FR-1, FR-2, etc.), epoxy resin (FE-3), polyester resin and the like. Common glass fiber cloth CCL has epoxy resin (FR-4, FR-5), which is the most widely used type of glass fiber cloth. In addition, there are other special resins (glass fiber cloth, polyamide fiber, non-woven fabrics to increase the material): bismaleimide modified triazine resin (BT),
Copper brass board classification of a variety of ways. Generally, the reinforcing material of the board is divided into five categories: paper base, glass fiber cloth base, composite base (CEM series), laminated multilayer board base and special material base (ceramic, metal core base, etc.).
in the hot press by high temperature and high pressure forming process Into the. General multi-layer board with the semi-cured film, it is CCL in the production process of semi-finished products (mostly glass cloth impregnated with resin, processed by drying).
General printed circuit board material can be divided into two categories: rigid substrate materials and flexible substrate materials. Ordinary rigid substrate material is an important varieties of CCL. It is reinforced with a material (Reinforeing Material), impregnated with resin adhesive, through drying, cutting, laminated into a blank, and then covered with copper foil, steel plate as a mold,
