Description
1. Grade: C12200, C11000, C1100, C1020,
C1220, T2, TP2, ETP, DHP, STD, HTE, VLP, FCF, RTF
2. Thickness: 8µm-1.2mm
3. Width: 5mm – 500mm
4. Temper: O, H, 1/4H, 1/2H
5. Cu (min): 99.90% 6. Types: single-sided & double-sided
Description
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About Copper Foil
YK Copper is a leading Copper Foil manufacturer and supplier.
Copper foil is the base copper thickness applied on outer and inner layers, made of copper plus a certain proportion of other metals. The copper foil has low surface oxygen characteristics, can be attached to various substrates, such as metals, insulating materials, etc., and has a wide temperature range. Mainly used in electromagnetic shielding and antistatic, the conductive copper foil is placed on the substrate surface and combined with the metal substrate. It has excellent conductivity and provides the effect of electromagnetic shielding.
Copper Foil Features
Copper foil can widely use in medicine, laboratory science, power vehicles, consumer electronics, energy storage equipment, computer-related equipment, aerospace, and other industries.YK Copper can supply Electrolytic Copper Foil and Rolled Copper Foil, e.g., Lithium Battery Copper Foil, PCB Copper Foil, High corrosion resistance rolled copper foil (RA Copper Foil with Nickel plating), etc.YK Copper has passed the ISO9001 international quality management system and ISO14001 international environmental management system certification.
Rolled Copper Foil is the original foil (also called rough foil) made by repeatedly rolling the copper plate and roughening according to the requirements. Its copper purity (99.9%) is higher than that of electrolytic copper foil (99.8 9/5), and it is smoother than electrolytic copper foil on the rough surface, which is conducive to the rapid transmission of electrical signals.
Electrolytic Copper Foil
Electrolytic Copper Foil is dissolved copper into a solution first, and then deposited copper sulfate electrolyte under the action of direct current in special electrolytic equipment to make the original foil, and then make the original foil according to the requirements. Carry out a series of surface treatments such as surface treatment, heat-resistant layer treatment, and anti-oxidation treatment. With the continuous development of high-density, thin-line, multi-layer, thin (<0.8mm), and high-frequency printed boards, some high-performance electrolytic copper foil manufacturing technologies have also emerged as the times require. e.g., Excellent tensile strength and elongation copper foil, Low Profile Copper Foil, Ultra-thin copper foil, etc.
YK Copper is also continuously developing new kinds of copper foil products. If you want to get our Copper Foil 's latest price daily, please get in touch with us quotation within 10 hours.
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If the production of electrolytic copper tubes finds that the pinholes and light transmission points of the copper tubes exceed the standard
(1)The cleanliness of the electrolyte exceeds the standard, and there are pollutants such as oil and glue;(2) There are pores or inclusions on the surface of the cathode;(3) There is dirt attached to the surface of the cathode;(4) The smooth copper powder is serious;Treatment measures(1) Enhanced filtering;(2) Replace the filter element or filter bag;(3) Add or replace activated carbon;(4) Replace the cathode roller or grinding roller;
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If there are craters and scratches on the copper foil
(1)When peeling off the edge, copper particles enter the stripping roller and other moving rollers and produce indentations between the copper foil. Scratches will occur if they enter between the idle roller (the guide roller that should rotate but not rotate) and the copper foil.(2) Copper particles enter the surface of the attached copper foil when peeling off the edge and are involved in the copper foil roll, causing copper foil indentation.(3) Indentations and scratches caused by foreign debris are mainly large dust in the air and sand and dust falling from the vibration of the driving above the foil machine.Treatment measuresFor pits and scratches, we can use only dry towels or brushes to clean the guide rollers that have pits or scratches. During the period of a high incidence of failure, it is recommended to clean it every 5 minutes. Technically, through technological transformation, all the guide rollers in contact with the copper foil should be rotated as much as possible to prevent the phenomenon of idle rollers and minimize scratch defects.
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If there is a color difference in the copper foil
(1) The pickling and water washing before (after) stripping the raw foil from the surface of the cathode roller is not thorough;(2) The gap between the pressing rollers of the raw foil machine is not suitable;(3) The on-site acid mist is serious, resulting in a large number of acid mist spots on the foil surface;(4) Oxidation of cathode roll surface;(5) The drying of the raw foil is not complete, and the surface of the raw foil is oxidized;(6) Anode damage;(7) The amount of washing water is too small, and the electrolyte is not rinsed clean, resulting in the crystallization of the electrolyte on the foil surface;(8) The washing water is polluted, dirt, oil corrosion, corrosion, salt, grease, etc., may cause a color difference on the foil surface;(9) Mercury pollution. For enterprises that use mercury to conduct electricity, a large number of mercury spots is also a major cause of color difference on the surface of copper foil.Treatment measuresThe cause of the color difference should be analyzed, and targeted measures should be taken. For example, suppose there is a regular brown color band on the rough surface of the raw foil. In that case, there may be a gap in the press water roller of the raw foil machine, which causes the flushing water to enter the electrolyte, and the press water roller should be repaired and adjusted.
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If it is found that there is a problem with the delay rate and fatigue elasticity of the copper foil at room temperature and 180°C
The low concentration of Cl ions in the acidic sulfate copper plating solution not only acts as a depolarizer and leveling agent, which is beneficial to obtain better flexibility but also strengthens the preferred crystallographic texture, causing a decrease in flexibility. On the other hand, too high a concentration of Cl ions will lead to the formation of pinholes in the copper coating so that the elasticity of the coating is greatly reduced.Treatment measuresFirst, check whether the Cl concentration of the electrolyte of the foil machine exceeds the standard; secondly, check the organic impurities in the electrolyte. If it exceeds the standard, it can be adsorbed and filtered by activated carbon; then check the additives, Cu, H2SO4, temperature, and flow.
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If the copper foil is torn
The main reason for the edge tearing of the copper foil is that the bonding force between the copper foil and the edge of the cathode roll is too large when the foil is peeled off from the surface of the cathode roll. On the one hand, since the entire cathode roller is energized and immersed in the electrolyte, an electrolytic copper layer will inevitably be deposited on the end of the roller, making it difficult to peel off the copper foil at the edge of the roller surface. On the other hand, the edge polishing of the cathode roller is not good, the end of the roller surface is damaged at right angles, and the grinding finish of the end surface is low, which will also cause excessive bonding force between the cathode roller and the copper foil at the edge of the roller.Treatment measuresTo solve the problem of copper layer deposition on the edge of the cathode roller, the end of the cathode roller is generally sealed to prevent the electrolyte from contacting the end of the roller to reduce copper deposition.
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If there is an area mass deviation of the copper foil
(1) calculation errors;(2) The anode is severely damaged or deformedTreatment measuresFor the DSA titanium anode, if the coating part falls off, the area and quality of the copper foil corresponding to the cathode part of the falling part will be small and thin; if it is a lead anode, due to deformation, individual positions will bulge, resulting in a smaller distance between the cathode and the anode, and an increase in the current, the thickness of the copper foil increases. Partial damage to the titanium anode can be temporarily solved by shielding the anode, but the anode must be replaced fundamentally; the deformation of the lead anode is usually manually corrected online, and in serious cases, the anode needs to be removed and corrected by special equipment.Individual rectifier cabinets tripped. Due to the current high-current electrolysis, 2-4 rectification units are generally used for power supply, and each rectification unit provides a current of 12,500A. One of the rectification units fails to work, and the operator does not find out in time, which may also cause deviations in the quality of the copper foil area.
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Application of Copper Foil
What Can Copper Foil Do?
Copper Foil For High-frequency Circuits(PCB, Etc.)
Copper Foil For IC and USIM Cards
Copper Foil For Flexible Substrate
Copper Foil For High-speed Digital Transmission
Copper Foil For Lithium-ion Battery
Copper Foil For High-performance Multi-layered Board
Copper Foil For Aerospace
Parameters of Copper Foil:
Chinese Grade | Abroad Similar Brand | ||||
International | USA | JAPAN | UK | GERMANY | |
(ISO) | (ASTM) | (JIS) | (BS) | (DIN) | |
T2 | Cu-ETP | C11000 | C1100 | C102 | E-Cu58 |
TP2 | Cu-DHP | C12200 | C1220 | C106 | SF-CU |
Grade | Chinese State | Specification | Tensile Strength | Elongation | Vickers Hardness |
T2 | M | Thickness:0.018-0.15mm Width:Max 400mm | >205MPa | >30% | – |
Y4 | 215-275MPa | >25% | 55-100HV | ||
TP2 | Y2 | 245-345MPa | >8% | 75-120HV |
Typical Mechanical Properties of Electrolytic Copper Foil for CCL and PCB:
Item | Unit | 8 | 12 | 18 | 35 | 70 | 105 | |
Purity | % | ≥99.8(Cu+Ag) | ||||||
Area weight | g/m2 | 70~74 | 102~108 | 144~152 | 275~285 | 560~580 | 850~880 | |
Tensile Strength | Normal temperature | N/mm2 | ≥320 | ≥280 | ||||
180 ℃ | N/mm2 | ≥160 | ≥150 | ≥140 | ||||
Elongation | Normal temperature | % | ≥3.0 | ≥4.5 | ≥4.5 | ≥5.0 | ||
180 ℃ | % | ≥2.0 | ≥20 | ≥3.0 | ≥3.0 | |||
Anti-peel strength | N/cm2 | ≥0.9 | ≥0.95 | ≥1.07 | ≥1.43 | ≥1.97 | ≥2.56 | |
Conductivity Resistance | Ω.g/m2 | ≤0.171 | ≤0.17 | ≤0.166 | ≤0.162 | |||
Rough Rz | um | ≤3.0 | ≤4.0 | ≤6.0 | ≤10 | ≤15 | ≤18 | |
Bright Ra | um | Ave≤0.4 |
Technical Properties:
Structure | Thickness (micron) | Weight(g/㎡) | Yield(㎡/kg) | Tensile Strength(N/m㎡) | Elongation at Break(%) |
Cu15—PET12 | 30 | 155 | 6.50 | ≥115 | ≥10 |
Cu15—PET23 | 41 | 169 | 5.90 | ≥115 | ≥10 |
Cu18—PET12 | 33 | 180 | 5.60 | ≥115 | ≥10 |
Cu18—PET23 | 44 | 195 | 5.10 | ≥115 | ≥10 |
Cu20—PET23 | 46 | 213 | 4.70 | ≥115 | ≥10 |
Performance Parameters:
Items | Wieldable Tin Plating | Non-weld Tin Plating | ||
Width Range | ≤600mm(≤23.62inches) | |||
Thickness Range | 0.012~0.15mm(0.00047inches~0.0059inches) | |||
Nickel Layer Thickness | ≥0.4μm | ≥0.2μm | ||
Nickel Content of Nickel Layer | 80~90%(Can adjust tin content according to customer welding process) | 100% Pure Nickel | ||
Surface Resistance of Nickel Layer(Ω) | ≤0.1 | 0.05~0.07 | ||
Adhesion | 5B | |||
Tensile Strength | Bass Material Performance Attenuation after Plating ≤10% | |||
Elongation | Bass Material Performance Attenuation after Plating ≤6% |
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Is copper foil pure copper?
Electronic grade copper foil with a purity of more than 99.7%
Does copper foil get old?
Copper is a relatively stable metal that does not react with oxygen at room temperature. Still, it can also rust copper in the presence of oxygen, carbon dioxide, and water simultaneously.Whether the copper foil is oxidized is related to two factors: one is the texture of the copper foil itself. If the electrolytic copper foil is impure or the surface is not properly treated, it will be easier to oxidize; the other is related to the baking conditions.In addition, copper foil for lithium batteries is prone to maintenance problems during use, which directly affects the service life of lithium batteries.
What is copper foil in PCB?
Copper foil, a type of negative electrolytic material, is transferred on the base layer of PCB to form constant metal foil, and it is also called the conductor of PCB. It is quickly bonded to the protecting layer and can be published with a safety layer, creating a circuit take after etching.The copper foil has a low rate of surface oxygen and can be connected to a different substratum, such as metal and protecting materials. And copper foil is mainly used in electromagnetic protection and antistatic. Place the conductive copper foil on the substratum surface, and integrate it with the metal substratum. It will provide great continuity and electromagnetic protection. It can be split into self-adhesive copper foil, single-side copper foil, double-side copper foil, and the like.Electronic grade copper foil, with a pureness of 99.7% and thickness of 5um-105um, is one of the basic materials to attain the fast growth of the electronic information sector. The quantity of electronic-grade copper foil is growing. It is widely used in Consumer Electronics.
what is copper foil tape used for
Copper foil tape is a kind of metal tape mainly used in electromagnetic shielding, divided into two types: electrical signal shielding and magnetic signal shielding. Electrical signal shielding mainly relies on the excellent electrical conductivity of copper itself, while magnetic shielding requires copper foil tape. The conductive substance “nickel” on the rubber surface achieves the effect of magnetic shielding, so it is widely used in mobile phones, notebook computers, and other digital products.1. Use of liquid crystal displays: Manufacturers and communication markets usually use copper foil to paste electronic products, including LCD TVs, computer monitors, tablet computers, digital products, etc., mainly to eliminate electromagnetic interference and ensure the normal use of products.2. Use of mobile phone repair shielding: Because copper foil tape has the characteristics of electrical signal shielding and magnetic signal shielding, some commonly used communication tools are not suitable for use on specific occasions. After special treatment, they can be carried into special occasions.3. Use of stamping slices: large-scale factory workshops usually use copper sheet materials to manufacture products and use copper foil tape die-cutting to make slices and apply them to production, which can greatly improve production efficiency and reduce production costs. It is economical and practical.4. Wide range of electronic and electrical digital applications: Copper foil tape is used for central air-conditioning pipelines, hoods, refrigerators, water heaters, etc. It can isolate electromagnetic wave interference, resist high temperatures to prevent spontaneous combustion, and is used in mobile phones, notebook computers, electronic appliances, and other digital products, so copper foil tape is still widely used. In addition, we can also use copper foil tape in glass crafts, which can fix the glass very well. Similarly, the copper pipe can also fix the window.
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