Shenzhen preferred conductive copper foil price
Copper foil is divided into calendered copper foil and electrolytic copper foil according to the preparation process, which accounts for the vast majority of the market. According to the Copper Foil Branch of China Electricity Association (CCFA), at present, domestic manufacturers mainly focus on the production of electrolytic copper foil. In 19 years, the domestic production capacity of electrolytic copper foil is expected to be close to 600000 tons, while that of rolled copper foil is only about 10000 tons.
Shenzhen preferred conductive copper foil price
Backward key production equipment: for high-quality products with production thickness less than 0.05mm, multi roll rolling mill with width meeting user requirements shall be used. The rolling mill of some domestic copper processing plants can not be normally put into rolling foil production due to the lack of other equipment or the traditional product structure in the factory. However, some small processing plants have to use outdated production equipment and processes due to lack of key equipment or investment capacity, and copper foil product specifications and technical indicators are inferior to foreign products.
Shenzhen preferred conductive copper foil price
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.
Shenzhen preferred conductive 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.
