Mixed additive for electrolytic profile-free copper foil

Abstract

The invention belongs to the technical field of electrolytic copper foil processing, and relates to a mixed additive for electrolytic profile-free copper foil. An aqueous mixed additive solution per liter comprises 15-30 mg of hydrolyzed collagen, 2-20 mg of 9-phenyl-acridine substitute, 4-10 mg of wliphatic amine oxyethylate sulfonate, 10-30 mg of sulfonate, 2-15 mg of polyethylene glycol, 0.2-0.8 mg of tetrahydrothiazolyl thione, 50 g of sulfuric acid and 20 g of copper sulfate pentahydrate. According to the mixed additive, the components are simple, and raw materials are easy to obtain; and according to the profile-free copper foil obtained by adopting the mixed additive, the thickness of the profile-free copper foil is 12-15 mu m, the rough surface namely the crystal growth surface Rz is smaller than 1.0 mu m, the typical value is 0.7 mu m, the glossiness at 60 degrees is 720, the tensile strength at the normal temperature is larger than or equal to 600 MPa, the tensile elongation at the normal temperature is larger than or equal to 12%, the tensile strength at the high temperature of 180 DEG C is larger than or equal to 260 MPa, and the tensile elongation at the high temperature is larger than or equal to 10%.

Description

technical field [0001] The invention belongs to the technical field of electrolytic copper foil processing, in particular to a mixed additive for electrolytic contourless copper foil. Background technique [0002] With the continuous improvement of the informatization level of society, people's daily information processing volume is increasing day by day, which puts forward higher and higher requirements for the information processing ability of electronic products. Today, electronic products are getting shorter, smaller, lighter and thinner. The rapid progress of the communication industry has made the original civilian communication frequency bands very crowded. Some high-frequency communications used for military purposes have gradually given up some frequency bands to civilian use since the beginning of the 21st century, making civilian high-frequency communications obtain extraordinary speeds. develop. The high confidentiality and high transmission quality requirement...

AI Technical Summary

Problems solved by technology

For electrolytic copper foil, the temperature is usually above 50°C, and the current density can be as high as 80A / dm 2 , the sulfonate crystal refiner in the non-dye additive will accelerate the decomposition, and the small molecular compound formed has a great side effect on the electroplating process, which is manifested by a decrease in brightness, an increase in roughness, an increase in brittleness, and a very low elongation; And dye-type brighteners, common phenazine dyes, triphenylmethane dyes, triphenylmethane dyes, diphenylmethane dyes, thiazine dyes, phthalocyanine dyes, phenol red dyes, etc., when the temperature exceeds 50 ° C, the dye and copper ions Very low complexing ability, poor brightening effect

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