Rolled copper foil special for graphene and preparation method of rolled copper foil

• Main Authors: LI CHUFANG, LU HAO, TONG WEIYU, XU WEN, TANG LINGFENG, WANG YUMING, ZANG JINGMEI, GUO JIANHUA, ZHAO JIAN, PAN FEI
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a preparation method of rolled copper foil, which comprises the following steps: sequentially carrying out homogenizing annealing, rough rolling, cleaning, intermediate annealing, warm rolling, finish rolling, graded annealing and polishing on an oxygen-free copper strip blank to obtain the rolled copper foil special for graphene, wherein the total deformation of the rough rolling is 85-90%; the initial rolling temperature of warm rolling is 380-420 DEG C, and the total deformation is 40-50%; the total deformation of the finish rolling is 50-80%; the graded annealing is divided into a high-temperature annealing stage and a low-temperature annealing stage, the annealing temperature in the high-temperature annealing stage is 680-720 DEG C, and the temperature is kept for 5-6 hours, and the annealing temperature in the low-temperature annealing stage is 180-220 DEG C, and the temperature is kept for 2-3 hours. By adjusting and controlling the rolling temperature, the machining rate and th