[Introduction]The effect of mass concentration of hydroxyethyl cellulose(HEC)on properties of electrolytic copper foil with different thickness needs to be studied.[Method]Electrolytic copper foils with different thickness were prepared by electroplating.The effect of mass concentration of HEC on glossiness,roughness,and microstructure at matte side,and mechanical properties of copper foils with different thickness were studied.[Result]The mass concentration of HEC had the greatest impact on the properties and microstructure of 35 μm-thick copper foil,while the least influence on the 12 μm-thick copper foil's.It is recommended to control the mass concentration of HEC in the range of 5-10 mg/L for 12 μm-thick copper foil,5-15 mg/L for 18 μm-thick copper foil,and 5-10 mg/L for 35 μm-thick copper foil with qualified mechanical properties.[Conclusion]Appropriate control of additive dosage in bath is favorable for preparation of electrolytic copper foils with excellent mechanical properties.
electrolytic copper foilhydroxyethyl cellulosethicknesstensile strengthelongation at breakcrystal plane orientation
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