406results about "Electroforming processes" patented technology

This invention relates to a method for surface roughening of high-end copper foil for electronic circuits, comprising the following steps: sequentially performing acid washing, roughening, blackening, ashing, passivation, and coupling agent coating on raw copper foil, with water washing steps interspersed between these steps, and finally drying and winding. The method is characterized in that the roughening step uses an alkaline plating solution containing copper pyrophosphate. This invention provides an alkaline plating solution for alkaline roughening of raw copper foil, generating grains with lower roughness on the already extremely thin surface of high-end copper foil. The grain size is between 0.02 and 0.1 micrometers. After deposition on the raw foil, the surface roughness of the finished foil increases by approximately 0.2 to 0.3 micrometers, ensuring that the surface roughness of the final product meets the requirements of high-end copper foil while maintaining peel strength.

The invention belongs to the technical field of copper foils, and particularly relates to a preparation method of a copper foil, the copper foil and a raw foil system.The preparation method comprises the steps of raw foil electrolysis, roughening treatment and curing treatment.The raw foil electrolysis is that multi-step electro-deposition is conducted in an electrolyte to form the copper foil, the multi-step electrodeposition comprises at least two deposition stages adopting different current densities and different copper ion concentrations, and in the deposition stage process, a composite additive comprising at least two different molecular weight components is added into an electrolyte; the roughening treatment comprises at least two roughening stages, and the concentration of copper ions in the electrolyte in the later roughening stage is lower than the concentration of copper ions in the electrolyte in the previous roughening stage; the curing treatment comprises at least two curing stages, and the concentration of copper ions in the electrolyte in the later curing stage is lower than that of copper ions in the electrolyte in the previous curing stage. According to the method, the elongation of the super-thick electrolytic copper foil at high temperature can be improved, meanwhile, the low surface roughness of the super-thick electrolytic copper foil is maintained, and the high peel strength of the super-thick electrolytic copper foil is guaranteed.

The invention relates to the technical field of gelatin adding, in particular to an electrolytic copper foil gelatin adding system based on a centrifugal pump. A data acquisition unit; the rotating speed setting unit is used for determining the rotating speed of the centrifugal pump according to the gelatin state and the comprehensive evaluation coefficient or the comparison temperature value, and determining whether to adjust the rotating speed of the centrifugal pump or not according to the fluctuation degree of the flow in the pipe; the opening degree setting unit is used for determining whether to adjust the electric adjusting valve or not based on the rotating speed adjusting coefficient and adjusting the opening degree of the electric adjusting valve according to the comprehensive evaluation value and the flow in the pipe when the electric adjusting valve is adjusted; and the stirring setting unit is used for determining whether to stir the gelatin solution in the gelatin tank or not according to the pressure in the pipe under the condition that the setting of the opening degree is completed, and determining the stirring duration according to the proportion of the abnormal sub-regions during stirring. According to the invention, the mixing uniformity of gelatin and electrolyte can be improved.

The invention provides a secondary battery and an electric device. The secondary battery comprises a copper foil, the copper foil comprises copper crystal grains with different particle sizes, the copper crystal grains comprise copper crystal grains with the particle size smaller than or equal to 0.5 mu m and copper crystal grains with the particle size larger than 0.5 mu m, the number proportion of the copper crystal grains with the particle size larger than 0.5 mu m in the total number of the copper crystal grains is smaller than 30%, and the number proportion of the copper crystal grains with the particle size larger than 0.5 mu m is smaller than 30%. And the amount of the copper grains with the grain sizes larger than 0.5 mu m and smaller than 4 mu m accounts for 5%-20% of the total amount of the copper grains.

The invention discloses a device and method for improving netlike grains on the roller surface of a cathode roller, and relates to the technical field of metal surface treatment, and the device comprises a roller arranged on the surface of a cathode roller main body; the gears are coaxially arranged on two sides of the roller and synchronously rotate along with the roller; the clamping insertion block is movably arranged above the gear; the special-shaped push block is fixed at the bottom end of the second oil cylinder; and the circular balls are arranged in the protective shell at equal intervals and roll and displace under the thrust of the special-shaped push block. The characteristic that the friction force can be changed before and after the cathode roller body is polished is ingeniously utilized, the idler wheels interacting through friction transmission are arranged on the surface of the cathode roller body in a contact mode, and the transmission effect of the idler wheels is dominated by the friction coefficient of the contact face; the rolling wheel does not rotate any more and drives the milligram energy actuator to be away from the cathode roller body, the cathode roller body is not polished any more, excessive polishing is prevented, and the risk that net-shaped lines are generated on the surface is reduced.

The invention relates to a metal mask supported by a glass substrate for manufacturing an organic light emitting diode display. The mask includes a glass substrate located only outside the display area, an open-cell metal layer for providing structural stability, and forming apertures for material deposition in the display area. The perforated metal layer can be formed by methods such as electroforming, sputtering, chemical vapor deposition, evaporation or atomic layer deposition, and the used metal comprises a material with a low thermal expansion coefficient, such as invar steel, super invar steel, kovar alloy, 42 alloy, nickel, tungsten, molybdenum, tantalum or rhenium. The mask supports two structural forms: a fine metal mask and an open metal mask which are respectively used for evaporation of red, green and blue sub-pixels and a common layer. The method can be used for batch processing of a plurality of micro organic light-emitting diode display substrates, and can also be used for full-coverage processing of a single active matrix organic light-emitting diode display substrate.

The invention discloses a copper foil post-processing system, and relates to the technical field of copper foil production, the copper foil post-processing system comprises a plurality of processing units arranged in sequence, and each processing unit is provided with an electrolyte tank and at least one conductive roller matched with the electrolyte tank; each processing unit is further provided with a power pack, the positive electrode of the power pack is electrically connected with the electrolyte tank, the negative electrode of the power pack is electrically connected with the middle copper bar, and the middle copper bar is electrically connected with the conductive roller. According to the technical scheme, the cathodes of all the power packs are electrically connected through the middle copper bar, and then the conductive rollers are electrically connected with the middle copper bar, so that the cathodes of all the power packs are combined together firstly, the cathodes of the electrolyte tanks are combined together firstly, and the voltage between the cathodes of all the electrolyte tanks is zero; and the anodes of the electrolyte tanks are independent, so that the effects that the current among the plurality of electrolyte tanks is not mixed, and the electrolyte tanks are not mutually influenced are achieved.

The utility model provides an anode tank shielding plate, which comprises an integrally formed shielding plate body which is arranged on side plates on two sides of an anode tank, the counterbores are formed in the shielding plate body; the fixing pieces penetrate through the counterbores one by one, and the shielding plate body is attached and fixed to a side plate of the anode groove; the at least two overflow ports are symmetrically arranged on the shielding plate body; the overflow pipe is connected with the overflow port, penetrates through the side plate, extends to the outer side of the anode tank and is used for discharging liquid in the anode tank; wherein the cross section of the counterbore comprises a straight line section, a containing section and a protection section which are arranged in sequence, and the straight line section and the containing section are used for containing the fixing piece, so that the shielding plate body is convenient to install and position, and electrolyte crystals attached to the shielding plate body are convenient to clean.

Provided is a roughened copper foil capable of achieving both high adhesiveness with respect to a thermoplastic resin and exceptional high-frequency characteristics. The roughened copper foil has a roughened surface on at least one side thereof. In the roughened surface, the surface texture aspect ratio Str is 0.02-0.24, and the load area ratio Smr1 separating protruding peaks from a core portion is 1.0-15.0%. Str and Smr1 are values measured in compliance with ISO 25178 at a cutoff wavelength of 0.251 μm using an S-filter and at a cutoff wavelength of 4.5 μm using an L-filter.

The application discloses a water electroplating solution for a composite copper foil for a battery current collector, and the electroplating solution formula comprises the following mass concentration components: copper sulfate pentahydrate 140-180 g / L, sulfuric acid 80-120 g / L, brightener 4-16 g / L, anti-folding plating agent 50-100 mg / L, leveling agent 1-3 g / L, stabilizer 0.5-3 g / L, and grain refiner 5-10 g / L, and the rest is DI pure water. The copper foil obtained through water electroplating has a smooth and bright surface, low porosity, low copper layer stress, and good bonding force with a base film, and can be applied to a battery current collector material.

Provided is an electrolytic copper foil that is less likely to break. When the foil thickness of the electrolytic copper foil is t (unit: μm), the glossiness of the electrolytic deposition end surface, which is determined by irradiating light at an incident angle of 60° along the length direction with respect to the electrolytic deposition end surface, is Gs (unit: %), and the elongation, which is determined by stretching along the length direction, is E (unit: %), the foil thickness t is 10 or more and 20 or less, the glossiness Gs divided by the foil thickness t (Gs / t) is 10 or more and 40 or less, and the elongation E divided by the foil thickness t (E / t) is 0.9 or more and 1.8 or less.

One embodiment of the present disclosure provides a copper foil including a copper film having a matte surface and a shiny surface; and a protective layer disposed on the copper film, wherein the copper foil has a compressive elastic strain index of 10 to 30 GPa. The compressive elastic strain index is measured using a nano-indenter.

The present invention relates to a copper foil and a preparation method therefor, a lithium battery copper foil, a current collector, an electrode sheet, a battery, and an electric device. The copper foil has a first surface and a second surface opposite to each other. The glossiness of the first surface is Gs1, and the glossiness of the second surface is Gs2, wherein Gs1>Gs2. The main diameter of a crystal grain fitting ellipse of a cross-sectional crystal structure between the first surface and the second surface is denoted as ΦED, with the unit of μm, and ΦED satisfies: ΦED = 2*sqrt(a2+b2), and ΦED is 0.1-6.5 μm, wherein a and b are respectively a long radius and a short radius obtained by fitting an ellipse. The copper foil exhibits both a high tensile strength and a high elongation, which can reduce the fracturing and wrinkling of the copper foil during the manufacturing process and the manufacturing and use process of the battery, and improves the cycling performance and safety of the battery.

The utility model discloses a structure for preventing crystallization of a liquid discharging main pipe of a crude foil engine, which comprises an anode tank and a liquid feeding distributor arranged on the lower side of the anode tank, the anode tank is connected with a backflow main pipe through a backflow branch pipe, and the liquid feeding distributor is connected with a liquid discharging branch pipe communicated with the liquid discharging main pipe. The backflow main pipe and the liquid discharging main pipe are both communicated with the dirty liquid tank, a control valve is installed on the liquid discharging branch pipe, an anti-crystallization communicating pipe is arranged between the backflow branch pipe and the liquid discharging main pipe in a communicating mode, and the end, connected with the backflow branch pipe, of the anti-crystallization communicating pipe is higher than the end, connected with the liquid discharging main pipe, of the anti-crystallization communicating pipe. And by arranging the anti-crystallization communicating pipe, the fluid in the backflow branch pipe can be drained into the liquid discharging main pipe, so that the liquid discharging main pipe is always flushed by the fluid when the equipment normally operates, and the crystallization condition is avoided.

Secondary battery, characterized in that it comprises a copper foil, wherein the copper foil comprises copper crystal grains of different particle sizes, wherein the copper crystal grains comprise copper crystal grains with a particle size of less than or equal to 0.5 µm and copper crystal grains with a particle size greater than 0.5 µm, wherein the proportion of the number of copper crystal grains with a particle size of less than or equal to 0.5 µm to the total number of copper crystal grains is 70% to 95%, and the proportion of the number of copper crystal grains with a particle size greater than 0.5 µm to the total number of copper crystal grains is 5% to 30%.

A secondary battery (5) and a preparation method therefor, an electrode sheet, and an electric device in which the secondary battery (5) is used. The secondary battery (5) comprises a negative electrode sheet, and the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer arranged on the surface of at least one side of the negative electrode current collector, wherein the gram capacity of a negative electrode active material in the negative electrode film layer is 800-1500 mAh / g; and the negative electrode current collector comprises a copper foil. The copper foil comprises copper grains having different particle sizes, and the copper grains comprise copper grains having a particle size less than or equal to 0.5 μm and copper grains having a particle size greater than 0.5 μm, wherein the proportion of the number of the copper grains having a particle size less than or equal to 0.5 μm in the total number of the copper grains is 70-95%, and the proportion of the number of the copper grains having a particle size greater than 0.5 μm in the total number of the copper grains is 5-30%.

An electrolytic foil and a battery current collector is provided in which the risk of breakage or tearing during manufacturing presented by reduced thickness can be restrained, and which possess sufficient strength for repeated charging and discharging in a secondary battery. The electrolytic foil and the battery current collector contain a Ni—Fe alloy layer, having a thickness of 1.5 to 10 μm and having a first surface and a second surface and wherein the value of a three-dimensional surface properties parameter Sv divided by the thickness is equal to or less than 0.5 for the first surface and the second surface.

The present invention relates to a hydroentangled shell (16), in particular a hydroentangled shell (16) for manufacturing a nonwoven fabric (12), preferably a non-porous nonwoven, by means of a web bonding process using a fluid jet (20). The housing (16) includes a body including interconnected dams (36). The body has a front side (52) that directs the fluid jet during use of the fluid jet and a back side (54) opposite the front side (52). The dam (36) defines an opening (34) configured to allow fluid to pass from the front side to the back side. The dam (36) has a shaped fluid jet rebound surface (50) configured to establish a laterally oriented rebound effect of the fluid jet. In one embodiment, the resilient surface (50) includes differently inclined portions (38, 40, 44, 44 ', 46) on the front side (52).

The invention discloses a coating anode with an intermediate layer improved by a composite additive and a preparation method and application of the coating anode, and belongs to the technical field of electrodes, and the preparation method comprises five steps of titanium substrate pretreatment, intermediate layer coating liquid preparation, intermediate layer preparation, active layer coating liquid preparation and active layer preparation. In the middle layer coating liquid preparation step, an alcohol solvent and polyether modified polysiloxane are added into a middle layer base solution, the volume ratio of the middle layer base solution to the alcohol solvent to the polyether modified polysiloxane is 10: (1-5): (0.5-2), and the base solution containing the composite additive is prepared after uniform mixing. According to the method, the alcohol solvent and the polyether modified polysiloxane are added into the conventional titanium-tantalum base solution according to a specific proportion, so that cracks on the surface of the material are effectively reduced, and the compactness of the middle layer is enhanced. According to the method, the binding force of the coating is improved, and the problem of failure of an anode plate caused by passivation of a titanium base material due to surface cracks of a traditional intermediate layer is solved, so that the service life of the coating titanium anode is remarkably prolonged.

A cathode roller two-end winding double-layer copper wire reinforced conductive structure comprises a cathode roller core, a roller, an inner side copper wire layer and an outer side copper wire layer. The roller is sleeved outside the cathode roller core; the roller comprises an outer roller body, an inner side plate and an outer side plate, and two annular grooves are formed in the outer sides of the two ends of the outer roller body in the width direction. The inner side plate is fixedly packaged on the inner side of the end part of the outer cylinder body, the outer side plate is arranged on the outer side of the inner side plate in an attached manner and is fixedly connected with the end part of the outer cylinder body, and meanwhile, the outer circular surface of the outer side plate extends to the outer side of the outer circular surface of the outer cylinder body; the inner side copper wire layer is connected in the annular groove in an attached mode, and the end of the inner side copper wire layer is electrically connected with the outer side plate. The outer side copper wire layer is connected to the outer circular face of the outer cylinder in an attached mode, and the end of the outer side copper wire layer is electrically connected with the inner side copper wire layer and the outer side plate at the same time. According to the conductive structure, the two layers of copper wires are wound at the two ends of the cathode roller, so that the conductivity can be remarkably improved, the stability of the structure can be effectively enhanced, the copper foil quality can be effectively ensured, and the production efficiency can be improved.

The utility model discloses a liquid mixing device of an electrolytic copper foil crude foil engine, which comprises a shell connected with a liquid inlet pipe and a liquid outlet pipe. A partition plate is arranged in the shell, and the inner space of the shell is divided into an upstream mixing area and a downstream flow equalizing area through the partition plate. A plurality of flow equalizing holes are formed in the partition plate, and the upstream mixing area is communicated with the downstream flow equalizing area through the flow equalizing holes; the liquid inlet pipe is connected with the downstream flow equalizing area, the liquid outlet pipe is connected with the upstream mixing area, and a baffling mechanism is arranged in the downstream flow equalizing area. Therefore, the mixing efficiency and the mixing uniformity of the mixer are remarkably improved, the flow equalizing precision is greatly improved, and the standard flow deviation of each branch pipe is less than or equal to 1.618; meanwhile, no extra power device is needed, liquid mixing and flow equalizing are achieved according to the hydrodynamic principle, more energy is saved, the environment is protected, and cost is reduced.

This invention discloses an anode device for electroforming additive manufacturing with uniform velocity distribution in long-slit jets. It includes a cover plate, a shell, a bottom cover, a flow rate regulating plate, and inert anode plates. The cover plate and bottom cover are sealed and fixed to the upper and lower ends of the shell, respectively. The shell contains an electrolyte receiving cavity and a liquid inlet, with the inert anode plates symmetrically inserted into the side walls of the liquid inlet. The bottom cover has a long-slit outlet. The flow rate regulating plate is fixed in the receiving cavity, forming a flow rate regulating slit between the two plates. The inlet, receiving cavity, flow rate regulating slit, liquid inlet, and long-slit outlet are sequentially connected. The flow height distribution of the flow rate regulating slit is set according to the natural velocity distribution curve of the long-slit outlet: a parabolic distribution in laminar flow and a 1 / 7 power-law distribution in turbulent flow. This device, by designing the flow rate regulating slit, solves the problem of uneven velocity distribution in long-slit jets, significantly improves the velocity distribution at the jet outlet cross-section, achieves spatial coupling between the flow field and the electric field, and improves the uniformity of the electroforming deposition layer thickness.

The invention relates to a porous copper foil and a preparation method and application thereof, and the method comprises the following steps: a plurality of cathode insulation regions are arranged on a cathode roller, and the total area of the plurality of cathode insulation regions accounts for 5%-50% of the area of a target region on the cathode roller; a plurality of anode insulation regions are arranged on the anode, and the proportion of the absolute value of the difference value between the total area of the anode insulation regions and the total area of the cathode insulation regions in the area of the target region is smaller than or equal to 5%; and the cathode roller and the anode are placed in a copper-containing electrolyte for copper foil electroplating deposition, and the porous copper foil is prepared. According to the method, through cooperation and synergistic interaction of the specific cathode roller and the specific anode roller, the mechanical thickness uniformity of the porous copper foil on the whole surface is improved in the electrodeposition foil generation process, stress concentration is reduced, and then the mechanical performance and the electrical performance of the porous copper foil are improved.

The invention provides a capacitor coil processing method based on electrochemical metal additive manufacturing. The capacitor coil processing method comprises the following steps: providing a silicon wafer substrate; uniformly coating glue on the surface of the substrate; sputtering a metal layer on the surface after spin coating, and dividing the substrate into a plurality of small blocks; putting a small substrate into a printing pool, adding electrolyte, and injecting printing ink into the probe; the scanning component is controlled to grab the printing probe, and laser focusing calibration and signal feedback detection are carried out; 3D design modeling is carried out according to the target capacitance coil structure; the surface appearance of the substrate is obtained, printing structure parameters and position parameters are input, and coil structure printing is conducted through laser feedback based on the modeling file; and performing post-treatment on the printing sample to obtain a target capacitance coil sample piece. The capacitor coil manufactured based on the electrochemical metal additive technology is stable in structure and high in precision, array preparation can be achieved, and the high-precision, integrated and batched development requirements of current micro elements can be met.

The utility model discloses a dust cover device for an electrolytic copper foil surface treatment production line, which comprises a frame-shaped base arranged above an electrolytic bath body, a plurality of movable door components are movably arranged on the upper side of the frame-shaped base, and at least the movable door components are made of transparent materials. And the frame-shaped base and the movable door assembly are arranged, so that the electrolytic bath body can be covered, external foreign matters are prevented from entering the electrolytic bath body, and spraying liquid in the electrolytic bath body is prevented from being splashed out.

The invention relates to the field of electromagnetic shielding materials, and particularly discloses an electromagnetic shielding material and a preparation process thereof.A titanium roller with specific roughness is used as a cathode roller, nickel foil with a certain rough morphology is directly prepared, and after plasma treatment, the nickel foil is directly compounded with PAI / PI, so that the electromagnetic shielding material is obtained. The prepared electromagnetic shielding material is ultrathin and has high strength and electromagnetic shielding performance at the same time, compared with an electromagnetic shielding material prepared by directly pasting a thermosetting adhesive in a metal foil and a high polymer material, the electromagnetic shielding material has higher high-temperature-resistant and flame-retardant effects, the temperature-resistant limitation of a glue composite hierarchical structure is avoided, and the instantaneous high temperature resistance can reach 280 DEG C.

The utility model provides an electrolytic copper foil back pull type anode plate structure, which relates to the technical field of anode plates, and comprises an anode plate body, one side of the anode plate body is fixedly connected with a mounting plate, one side of the mounting plate is provided with a plurality of bolts, and an adjusting device is arranged between the bolts and the mounting plate. The adjusting device comprises a plurality of auxiliary plates, the auxiliary plates and the side plates are arranged, the auxiliary plates and the side plates can drive the bolts to slide on one side of the mounting plate, and meanwhile, under the action of the threaded rods, the threaded rods can fix the bolts connected with the auxiliary plates and the mounting plate, so that the bolts and the mounting plate are fixed, and the bolts are fixed. The bolts are arranged on the mounting plate, so that the positions of the bolts on the mounting plate can be correspondingly adjusted and fixed according to the hole positions on the actual mounting structure, the positions of the bolts can be matched with the hole positions of the mounting structure, the mounting stability of the anode plate can be improved, and normal operation of the anode plate is facilitated.

The invention relates to a mask manufacturing method and a mask. The mask manufacturing method may comprise: a base material preparation step of preparing a base material including a base material first surface and a base material second surface positioned on the opposite side of the base material first surface; a first insulating layer forming step of forming a first insulating layer including an insulating first surface facing the substrate second surface, an insulating second surface located on the opposite side of the insulating first surface, and an insulating opening penetrating from the insulating first surface to the insulating second surface; a first metal layer forming step of forming, in the insulating opening, a first metal layer including a metal first surface facing the base material second surface and a metal second surface located on the opposite side of the metal first surface; an insulating layer removal step for removing the first insulating layer surrounded by the first metal layer in plan view; and a base material processing step in which a first opening that overlaps the first metal layer in plan view is formed in the base material.

The invention discloses a preparation method of high-strength and high-toughness graphene-doped composite copper foil, which comprises the following steps: S1, treating graphene by adopting a high-energy ball milling method to obtain nano-sized defective graphene; s2, preparing a composite electrolyte containing the defective graphene, and adding the composite electrolyte into an industrial electrolytic cell after ultrasonic dispersion; s3, adding a compound additive into the electrolytic bath, and uniformly mixing through air blowing and ultrasound; s4, direct current is introduced, so that graphene and copper ions are co-deposited on the surface of the cathode roller to prepare a composite copper foil; and S5, carrying out acid pickling, water washing, drying, stripping and rolling on the composite copper foil. According to the invention, through doping of nano-scale defective graphene, on one hand, active sites are provided for copper deposition so as to refine grains, increase grain boundaries and hinder dislocation motion; on the other hand, due to the fact that the size of the defective graphene is matched with the height of copper grains, the strength can be improved through dislocation pinning and back stress strengthening, meanwhile, a multi-slip system is activated, dislocation storage is promoted to improve plasticity, the balance dilemma of the strength and the ductility of the copper foil is broken through finally, the copper foil has the high-strength and high-toughness characteristics, and the design requirement for the high energy density of the lithium ion battery is met.