Hefei Preferred Electronic Copper Foil Factory
Silane coupling agent treatment: after anti oxidation treatment, the surface is sprayed with silane, which can improve the oxidation resistance at room temperature on the one hand; On the other hand, in high temperature pressing plate, silane can better combine copper foil and resin substrate through coupling, and improve peel strength. Post treatment process - drying. In order to prevent the harm of residual moisture, it must be dried at not less than 100 ℃ later, and the drying temperature cannot be too high.
Hefei Preferred Electronic Copper Foil Factory
In order to improve the bonding strength of copper foil to the substrate, oxidation is usually used (that is, after oxidation treatment, a layer of copper oxide or cuprous oxide is formed on the surface, which improves the bonding strength of copper foil and substrate due to the polarity) Or roughen the copper foil (a roughened layer is generated on the surface of the copper foil by electrochemical method, which increases the surface area of the copper foil and improves the bonding strength between the copper foil and the substrate due to the anchoring effect of the roughened layer on the substrate).
Hefei Preferred Electronic Copper Foil Factory
Calendered copper foil products have good ductility, flexibility, low roughness and high folding resistance, and have become the basic materials of flexible printed circuit boards, mainly used in flexible circuit boards and high-frequency circuit boards.
Hefei Preferred Electronic Copper Foil Factory
High end lithium battery copper foil needs to meet the requirements of high energy density, high safety, lightweight and other characteristics of power batteries, which is also the development trend of power batteries in the future. In order to meet the above characteristics, thinner lithium copper foil means smaller resistance, so the energy density and other performance of the battery will be improved. Moreover, the thinner the copper foil of lithium battery is, the lighter the weight of the corresponding battery will be.
Hefei Preferred Electronic Copper Foil Factory
The adhesives used for the laminates mainly include phenolic, epoxy, polyester, polyimide, polytetrafluoroethylene resin, etc. Therefore, the laminates are also divided into phenolic, epoxy, polyester, polyimide, and polytetrafluoroethylene laminates.
