Cem 1 PCB material: epoxy resin, glass fiber cloth, wood pulp paper, copper foil, etc.
epoxy resin in cem1 pcb - mostly apply brominated epoxy resin as a main resin
glass fiber cloth, generally using E fiberglass cloth, alkali content is less than 0.8%, fiberglass cloth must be processing by wetting agent and surface chemical treatment. The chemical agents should be chosen silane treatment agent, such as amino silane, epoxy silane, cationic silane etc.
Wood pulp sheets have two types: cotton pulp paper, and wood pulp paper. Currently, cem-1 pcb material applies bleached wood pulp paper. Bleached wood pulp paper is divided into two kinds: add intensifier and without intensifier in bleaching wood pulp paper, intensifier of bleached wood pulp paper is mainly used for secondary coating.
copper foil of cem-1 pcb thickness normally at 18 microns or 35 microns .
cem-1 pcb structure: surface material applies fiberglass cloth, core material applies wood pulp paper.
cem1 pcb main features:
1. the whole performance is better than CCL products;
2. good machinability;
3. the cost is lower than other glass fiber cloth.