Zhanjiang Preferred Circuit Board Copper Foil Price
Copper foil can be divided into calendered copper foil and electrolytic copper foil, which are mainly used for flexible printed circuits and other special purposes. In the production of clad laminates, a large number of applications are. As for the purity of copper, IEC-249-34 and Chinese standards stipulate that it shall not be lower than 99.8%.
Zhanjiang Preferred Circuit Board Copper Foil Price
In order to improve the adhesion strength of copper foil to the substrate, Generally, oxidation (that is, after oxidation treatment, a layer of copper oxide or cuprous oxide is generated on the surface, which improves the bonding strength of the copper foil and the substrate due to the polarity) or roughening copper foil (using electrochemical methods to generate a layer of roughening layer on the surface of the copper foil, which increases the surface area of the copper foil, and improves the bonding strength of the copper foil and the substrate due to the anchoring effect of the roughening layer on the substrate) is used.
Zhanjiang Preferred Circuit Board Copper Foil Price
Curing treatment: deposit a layer of dense metal copper in the nodular particle gap of the roughening layer, increase the contact surface between the roughening layer and the wool foil substrate, and reduce the roughness of the roughening layer surface. Microscopically, after rough surface roughening treatment, the foil surface is uneven and undulating greatly, while after curing treatment, the copper foil surface is relatively flat. After curing treatment, although the roughness is reduced, the bonding strength between the treatment layer and the insulating substrate material is improved due to the increased contact area between the roughened layer and the wool foil, which fundamentally eliminates the delamination between the treatment layer and the wool foil.
Zhanjiang Preferred Circuit Board Copper Foil Price
Small dirt, small exclamation mark. During the production of raw foil, the hair side is upward, and the dirt in liquid and air all fall on the hair side, which is printed on the smooth side after rolling. The reason is that the stains on the cathode roll are not dried. The surface temperature of the cathode roll is only 50 degrees, and the air temperature in the workshop is generally about 25 degrees. The surface hairiness is very good. The dirt itself has water, and the drying time is only 2-3 minutes. Therefore, the dirt on the copper foil cannot be completely dried.
Zhanjiang Preferred Circuit Board Copper Foil Price
Copper foil is not a traditional metal copper product. It combines design concepts such as composite material and nano material technology, and different internal microstructures, resulting in different properties from traditional pure copper. The application of copper foil mainly focuses on the characteristics of conduction, heat conduction and electromagnetic wave shielding.
