Colloid palladium activation fluid interpretation Made by palladium chloride and stannous chloride reaction. Colloid palladium particles between 1-100 nm in diameter, palladium particles size is smaller, the higher catalytic activity, stability, the better. Colloid palladium activation fluid the biggest characteristic is to sensitization, activation concentration in a solution impregnation process at the same time to complete. When palladium copper-clad immersed among them after drilling, clean, glue shape metal palladium particles adsorption on the hole wall insulation materials and copper foil surface catalytic layer. After the activation of copper foil surface, because there is no can be replaced by the replacement of palladium ions, and thus does not produce loose layer copper replacement.
Colloid palladium activation fluid is colloidal palladium atoms of colloidal solution. Colloid palladium made by PdCl2 and reductive reaction preparation. Reducing agent sodium hypophosphite, formaldehyde, ascorbic acid, di borane, sodium phosphate, sodium borohydride, hydrazine hydrate, and the tin compounds, including SnC12 most commonly used.
The Pd/Sn colloids colloid palladium catalyst is the most widely industrial application, it is composed of PdC12 and SnC12 reaction in acidic solution preparation, colloidal palladium, the outer layer is hydrated divalent and tetravalent tin ion, excessive Sn2 + stability play a crucial role for the catalytic liquid. In the modern colloid catalyst also contains a large amount of acid or salt.
Colloid palladium waste liquid trough, the palladium by six tin ion package, so the general of ion exchange resin can't recovery of palladium, consistent since this kind of wastewater containing palladium are discharged into waste water station, led to a waste of precious metal resources.
For plastic electroplating, cars, electroplating, PCB plating copper used in the pretreatment of tin Pd - SnCl2 colloid palladium activation fluid, the company has developed completely and selective adsorption of activated carbon palladium device, work, the problem for many years, since the industry manages the colloid palladium activation of palladium completely recycled. For the related units to reduce pollution, has the very good economic, social and environmental benefits
