1076 results about "Silver paste" patented technology

The invention discloses a flexible circuit board made of weldable low-temperature silver paste and a preparation process of the flexible circuit board, and relates to the technical field of flexible electronic device manufacturing, and the flexible circuit board comprises a base material layer, a low-temperature weldable silver paste conductive layer and a protective layer. According to the invention, the collaborative design of the weldable low-temperature silver paste and the self-repairing protection layer is integrated, the efficient preparation of the flexible circuit board is realized through the printing technology, the weldable low-temperature silver paste breaks through the traditional high-temperature limitation, supports a wide range of substrates and can be directly welded without surface treatment, and in addition, the polyurethane protection layer containing the dynamic disulfide bond has a self-repairing function. Compared with a traditional FPC, only two core processes of printing and baking are needed, the process is greatly simplified, the equipment investment is reduced, and double reduction of the manufacturing cost and the material cost is achieved.

The invention discloses a self-energy-supply multi-mode sensing electronic skin based on ionic gel heterojunction array integration and a preparation method and application of the self-energy-supply multi-mode sensing electronic skin. The electronic skin adopts a multi-layer composite structure design and comprises an electrode array layer, a silver paste connecting layer, a nano material doped ionic gel array layer and a pure ionic gel continuous layer, and passive self-energized work is realized through a space ion migration effect at a heterogeneous gel interface. The method is characterized in that the design of a multi-layer flexible composite structure is adopted, space-time coded light, temperature, pressure and humidity four-mode stimulation can be synchronously converted into electroneurographic signals, and a collaborative identification strategy of response intensity dynamic range and synaptic learning / delay time difference is utilized; and high-precision decoupling of the multi-source signals is realized in combination with a classification decision tree algorithm. The electronic skin has the characteristics of flexibility, deformation, environment self-repairing and bionic synapse, and geometrical characteristics of a reconfigurable target source are fused through time-space domain multi-modal data.

The invention discloses a heterojunction solar cell, a preparation method thereof and a photovoltaic module, and relates to the field of heterojunction solar cells. The heterojunction solar cell comprises a substrate; a front passivation layer and a front anti-reflection layer are sequentially arranged on the front surface of the substrate from inside to outside; the back surface of the substrate is provided with an N-type contact region and a P-type contact region; the N-type contact area is provided with a first passivation layer, a first conductive layer, a first mask layer, a seed layer, a copper gate electrode, insulation paste and a solder strip from inside to outside in sequence. The P-type contact area is provided with a second passivation layer, a second conductive layer, a third conductive layer, a seed layer, a copper gate electrode and a solder strip from inside to outside in sequence. Solder paste is arranged on the side wall of the copper gate electrode. The copper electroplating technology can accurately control the height and width, and is of a main-grid-free structure, so that the material cost is reduced, and the double-sided rate of the solar cell is improved; the conductivity of copper is superior to that of silver paste, so that the short-circuit current, the filling factor and the efficiency of the solar cell structure can be improved.

The invention relates to the technical field of silver paste preparation, in particular to a silver paste conductivity data modeling and formula optimization system based on machine learning, which comprises a data acquisition and storage module, a preprocessing module, a characteristic influence analysis module, a formula optimization module, a simulation verification module and the like. The method comprises the following steps: acquiring original data of a silver paste formula, preprocessing, calculating influence coefficients of all components on target performance by utilizing a machine learning model, and identifying high and low influence components; the formula optimization module is combined with component content constraints and adopts a multi-objective optimization algorithm to generate candidate formulas; and the simulation verification module verifies the performance of the formula through sintering simulation and process adaptation, and feeds back optimization. According to the invention, the full-process intelligentization of the silver paste formula from data processing to optimization verification is realized, the conductivity and other performances of the silver paste are accurately improved, the research and development cost is reduced, the period is shortened, the suitability of the formula process is enhanced, and the research and development and industrial upgrading of the silver paste are promoted.

The invention provides high-activity contact type silver powder for photovoltaic conductive silver paste, a preparation method of the high-activity contact type silver powder and the photovoltaic conductive silver paste, and belongs to the technical field of photovoltaic materials. The high-activity contact type silver powder comprises net-shaped polycrystalline spherical silver powder and an active layer wrapping the surface of the net-shaped polycrystalline spherical silver powder. Wherein the reticular polycrystalline spherical silver powder is a spherical aggregate formed by stacking and self-assembling flaky particles with the particle size of 200-600 nm, and the reticular polycrystalline spherical silver powder is of a porous structure; and the active layer is an organic amine compound. The silver powder disclosed by the invention has good conductivity after being sintered, the adhesive force of a fine grid is relatively high, and the assembly has relatively high power output.

The invention provides high-wettability glass powder, a preparation method of the high-wettability glass powder and BC battery conductive silver paste, and belongs to the technical field of photovoltaic battery paste. The glass powder comprises the following components in parts by mass: 50-60 parts of a first component, wherein the first component is PbO and Bi2O3; 30 to 40 parts by mass of a second component, wherein the second component is TeO2 and SiO2; the third component is prepared from the following components in parts by mass: Li2CO3, Na2CO3 and K2CO3; and 0.1 to 5 parts by mass of a fourth component, wherein the fourth component is at least one of MoO3, In2O3, SeO2, WO3, Al2O3 and ZnO. The glass powder disclosed by the invention has good wettability, and the problems of high interface resistance and low filling factor caused by non-uniform thickness of a glass layer in the prior art are solved.

The invention provides high-performance silver powder suitable for TOPCon battery fine grid silver paste, a preparation method of the high-performance silver powder and the silver paste, and belongs to the technical field of photovoltaic materials. The preparation method comprises the steps that a silver salt solution and a composite reducing agent are mixed, a first-stage hydrothermal reaction is carried out at the first temperature, a second-stage hydrothermal reaction is carried out at the second temperature, and silver powder is obtained after centrifugation, washing and drying; wherein the composite reducing agent is selected from a mixture of two of potassium tartrate, sodium sulfite and ferrous sulfate. According to the method, gradual growth and crystallinity improvement of silver crystal nucleuses are achieved through two-stage heating, particle aggregation or uneven morphology caused by rapid reduction is avoided, in addition, the adopted composite reducing agent combination is remarkably superior to a single reducing agent (such as ascorbic acid), and the morphology and particle size distribution of the silver powder can be more accurately regulated and controlled.

The invention discloses metallized silver paste for improving sintering dusting of a TOPCon battery, a preparation method and application, and belongs to the technical field of solar battery manufacturing, and the technical scheme is that the metallized silver paste comprises the following components in percentage by mass: 72-87% of a metal phase; 3-9% of a glass phase; 8-12% of an organic carrier; 0.1%-0.5% of a polyimide precursor; 0.1 to 0.5 percent of cerium oxide; wherein the polyimide precursor forms a cross-linked network at a high temperature, the cerium oxide is used as a passivation layer protective agent, and lithium borosilicate glass is also added into the glass phase; according to the metalized silver paste for improving the sintering dusting of the TOPCon cell, the preparation method and the application, the dusting rate is reduced by improving and optimizing materials and process parameters, and compared with a traditional process, the efficiency, the photoelectric conversion efficiency and the yield of the solar cell are further improved.

The invention discloses conductive silver paste for a solar cell and application of the conductive silver paste, and belongs to the technical field of conductive silver paste. According to the invention, the prepared silver paste is printed on a silicon wafer cell in a silk-screen printing manner, so that the good rheological property of printing can be obtained. And a rheometer is introduced for testing, and an SEM scanning electron microscope is introduced for checking the surface appearance of the silver grid line. The invention discloses a TOPCon silicon wafer for a silicon solar cell, which comprises the following components in percentage by weight: 82-90% of silver powder, 20-30% of glass powder and 20-30% of organic carrier. 2-5% of glass powder; and 8-13% of an organic carrier. The conductive silver paste with good rheological property is prepared by using a mixture of polyamide wax and hydrogenated castor oil in a mass ratio of 1: 1 as a thixotropic agent. The main grid silver paste for the silicon solar cell provided by the invention can be well matched with step-by-step printing of a cell piece, different proportions of the binder and the thixotropic agent are used, the photoelectric conversion efficiency is high, the peeling strength of the main grid is high, and the step-by-step printing main grid paste requirements of current different types of paste and cell pieces can be well met.

The invention discloses high-conductivity low-temperature sintering composite copper paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The composite copper paste consists of the following components in percentage by mass: 70-90% of a conductive phase, 2-10% of a binding phase and the balance of an organic carrier. Wherein the conductive phase comprises cuprous hydride modified copper powder and a copper complex; the copper complex is formed by a copper compound and an organic ligand through a coordination reaction. The copper paste can be sintered to form an electrode or a circuit in a nitrogen atmosphere at a temperature of less than or equal to 300 DEG C, and has the advantages of low resistivity, good oxidation resistance, strong adhesion and the like, and the cost of the copper paste is obviously lower than that of silver paste. The invention also provides a preparation method of the composite copper paste and an application of the composite copper paste in preparation of an electronic component electrode or a conductive circuit.

The invention relates to the technical field of electronic materials, in particular to conductive silver paste for a BC battery, and the conductive silver paste comprises the following components in percentage by weight: 88-93 wt% of silver powder, 3-5 wt% of glass powder, 1-3 wt% of organic resin, 6-10 wt% of solvent and 0-1 wt% of other auxiliaries, the sum of the components is 100 wt%, and the glass powder comprises gallium sesquioxide. The conductive silver paste can be used for a BC battery so as to completely or partially solve the problem of large contact resistance of a P region of the BC battery, and meanwhile, the reliability is guaranteed.

The invention discloses silver paste and a preparation method thereof. The silver paste comprises silver powder and an organic carrier. Wherein the organic carrier comprises a solvent, a metal complexing agent and silver salt; wherein the metal complexing agent and silver salt are subjected to a complexing reaction to generate a complex, and the complex has a polar group. In this way, diffusion of silver paste in the printing process can be reduced, and the precision and reliability of the semiconductor device are improved.

The invention relates to the technical field of metal powder, in particular to submicron silver powder and a preparation method thereof.The preparation method of the submicron silver powder comprises the steps that S1, a silver source solution, a reduction solution, a dispersion solution and a modification solution are prepared; s2, adding a reducing solution into the dispersion liquid, uniformly mixing, and adding an acid solution to form a base solution with the pH value of 1.0-4.8; s3, adding a silver source solution into the base solution, uniformly mixing, and adding an alkaline solution to form a reaction solution with the pH value of 6.5-11.0; s4, a modified solution is added into the reaction liquid, and silver powder dispersion liquid is prepared; and S5, the silver powder dispersion liquid is treated, and the submicron silver powder is prepared. The formed submicron silver powder is more regular in morphology, is circular, and is smaller in specific surface area compared with a flaky or approximately hexagonal silver powder, so that the dispersity of the silver powder in silver paste is improved, the silver paste has better flowability, and the printing uniformity is guaranteed. And the particle size of the formed submicron silver powder is uniform. And the tap density of the formed submicron silver powder is higher.

The present invention discloses a tellurium-lead-lithium oxide glass powder for BC cell N-region conductive paste and its preparation method, belonging to the field of photovoltaic silver paste. The glass powder adopts components with high Pb, Te, and Li: aTeO2 - bPbO - cLi2O - dBi2O3 - eWO3 - fZnO - gSiO2 - hNa2O; where a + b + c + d + e + f + g + h = 1, 0.2 < a < 0.4, 0.1 < b < 0.4, 0.1 < c < 0.25, 0 < d < 0.1, 0 < e < 0.1, 0 < f < 0.1, 0 < g < 0.1, 0 < h < 0.05, and a + b > 0.5, and the ratio of c to h is (3 - 10):1. By controlling the specific Pb, Te, and Li contents and the specific Li / Na ratio in the present invention, a strong corrosion effect on the poly layer of the cell is achieved, enabling more silver ions dissolved in the glass liquid to recrystallize on the surface of the silicon wafer, thereby achieving good ohmic contact.

The invention discloses weldable low-temperature sintered silver paste which is prepared by mixing 65-90 parts of micro-nano silver powder, 10-20 parts of metal salt additive, 1-5 parts of polymer additive, 15-19 parts of organic solvent and 1-5 parts of organic additive, the micro-nano silver powder is obtained by mixing nano silver powder with the particle size of 10-50nm and micron silver powder with the particle size of 1-10mu m, and a preparation method comprises the following steps: step 1, preparing a first-stage polymer carrier; the preparation method comprises the following steps: 1, preparing a first-stage polymer carrier, 2, preparing a second-stage polymer carrier, 3, pretreating micro-nano silver powder, and 4, preparing conductive silver paste. Through micro-nano silver powder grading, nano-particles are filled in gaps of micro-particles, the stacking density is improved, the sheet resistance is reduced, an oxidation film is formed on the surface of the passivated micro-nano silver powder, the interface bonding strength can be effectively improved, the sintering activation energy of silver is reduced by the metal salt additive, and by combining the'etching-remelting 'effect of the oxidation film on the surface of the silver powder, the bonding strength of the surface of the silver powder is improved. The sintering temperature is effectively reduced.

The invention discloses solar conductive silver paste and a preparation method and application thereof, and the preparation raw materials of the solar conductive silver paste comprise the following components in parts by weight: 65-92 parts of silver powder, 2-30 parts of silicide powder, 1-5 parts of glass powder and 4-15 parts of an organic carrier. By selecting the silicide powder and controlling the mass ratio of the silicide to the silver powder to be within the range, on one hand, the silver-silicon contact quality of a solar cell is improved, and the solar conductive silver paste capable of improving the photoelectric conversion efficiency is developed.

The invention discloses water-based colored paint for automobiles as well as a preparation method and application of the water-based colored paint. The water-based colored paint is prepared from the following raw materials in parts by weight: 10 to 15 parts of water-based polyurethane dispersion, 5 to 9 parts of water-based hydroxy acrylic acid dispersion, 4 to 8 parts of melamine formaldehyde resin, 2 to 4 parts of color paste, 1 to 2 parts of aluminum paste, 2 to 3 parts of pearlescent pigment, 15 to 30 parts of deionized water and an organic solvent, the organic solvent comprises 6-8 parts of a high-boiling-point alcohol ether solvent and 2-4 parts of a swelling type solvent. The water-based colored paint for the automobile, provided by the invention, is generally used for coating an outer plate and an inner plate of an automobile body, and can be used for well improving the appearance of a coating film formed by spraying the inner plate and overcoming the problems of gloss loss and the like of the coating film when a static-free compressed air machine arm is used for spraying the inner plate of the automobile body.

The invention discloses low-silver-content composite conductive silver paste based on a three-dimensional conductive network and a preparation method, and relates to the technical field of composite conductive silver paste preparation, and the low-silver-content composite conductive silver paste comprises a low-silver-content conductive phase, an interface bonding layer, a support body and an organic carrier; and the conductive phase with low silver content comprises the following components: 25 wt%-30 wt% of silver-plated hollow glass beads and 12 wt%-18 wt% of a three-dimensional conductive network. According to the invention, through accurate proportioning of the conductive phase with low silver content, the use amount of silver is greatly reduced. The silver-plated hollow glass bead takes light glass as a core and an ultrathin silver layer as a conductive shell, so that the silver consumption is reduced by more than 60wt%; the three-dimensional conductive network adopts a synergistic structure of silver nanowire fragments and graphene composite fragments, and the high conductivity of graphene is utilized to replace part of silver materials, so that the dependency degree of silver is further reduced. The silver content of the silver paste is greatly reduced, the cost of raw materials is greatly reduced, and the economical efficiency of the silver paste in large-scale application scenes such as photovoltaic and electronic packaging is remarkably improved.

The invention relates to a water-based ball-milled passivated aluminum paste and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out ball milling on aluminum powder, a surface modifier, a hydrophilic solvent and an inorganic passivator until the target particle size of the aluminum powder is reached, and obtaining preliminarily passivated aluminum paste; carrying out suction filtration on the primarily passivated aluminum paste, uniformly stirring and mixing, adding an organic passivator, continuously stirring to carry out a passivation reaction, adding an auxiliary agent, and continuously stirring to obtain aluminum paste; wherein the organic passivator is a combination of a micromolecular organic passivator and a macromolecular organic passivator. According to the method, the in-situ passivation technology is adopted, the aluminum sheet is passivated in the extension process, the influence of dissolution and auxiliaries on the aluminum sheet is small, a more compact protective film is formed through the synergistic effect of the inorganic passivator and the organic passivator and through the oxidation film layer, chelation and precipitation reaction, corrosion of aluminum powder is greatly inhibited, and the service life of the aluminum sheet is prolonged. And the water-based passivated aluminum paste and a water-based resin system maintain good compatibility, and can show good glossiness.

The utility model relates to a battery piece, a battery string and a photovoltaic module, and belongs to the technical field of solar cells. The battery piece comprises a battery body and a metal foil, and the backlight surface of the battery body is provided with a back surface grid line; the metal foil is connected to the back surface grid line; a layer of metal foil is arranged on the backlight side of the cell body to connect the grid lines, so that lower line loss can be realized under the condition that an aluminum back surface field is thinner, even no aluminum back surface field exists or a small amount of silver paste is used, further, less cutting in the preparation process can be realized, the loss of a cell piece is favorably reduced, and meanwhile, warping or cost increase is not caused.

The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural polymer films. The preparation method comprises the following steps: S1, mixing low-density polyethylene powder, aluminum paste, a complex light conversion agent, dioctyl phthalate and EVA (Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density polyethylene powder are stirred for a reaction, and modified low-density polyethylene is obtained; the modified low-density polyethylene, maleic anhydride grafted polyethylene, a multi-effect light stabilizer and polyethylene wax are subjected to banburying granulation, and modified light-stable master batches are obtained; s3, carrying out banburying granulation on the low-density polyethylene powder, the polyethylene powder, carbon black, zinc stearate, ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the black layer, and performing double-layer co-extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and aging resistance.

The invention discloses a novel automobile back view mirror flexible printed circuit board prepared based on weldable silver paste, and belongs to the technical field of electronic materials and devices, conductor patterns in the flexible printed circuit board comprise a main circuit pattern and an auxiliary function structure formed by weldable low-temperature curing silver paste; the curing temperature of the weldable low-temperature silver paste is 125-135 DEG C, and the weldable low-temperature silver paste comprises conductive filler, a polymer resin system, a high-boiling-point ester solvent, a curing agent, a silane coupling agent, a polyamide wax thixotropic agent, a polysiloxane defoaming agent, modified carbon nanotubes, modified aluminum oxide powder, modified barium sulfate and a low-stress modifier. The polymer resin system comprises novolac epoxy resin, biphenyl epoxy resin and a polyacrylate-CTBN copolymer; through the synergistic effect of all the components and an innovative process, comprehensive improvement of mechanical reliability, environmental durability, conductive stability and power load capacity is achieved, and the strict requirement for high reliability of the automobile rearview mirror in an extreme environment is perfectly met.

The invention discloses a novel notebook flexible printed circuit board prepared based on weldable low-temperature silver paste and a backlight module, and belongs to the technical field of electronic materials and devices. Conductor patterns of the flexible printed circuit board comprise a main circuit pattern formed by rolled copper; the auxiliary function structure is formed in a local area of the main circuit pattern by weldable low-temperature silver paste; the curing temperature of the weldable low-temperature silver paste is 130-145 DEG C, the weldable low-temperature silver paste comprises conductive filler, a polymer resin system, an ester solvent, a curing agent, a silane coupling agent, a polyamide wax thixotropic agent, a polysiloxane defoaming agent, modified carbon nanotubes and modified antimony tin oxide powder, and the conductive filler comprises flaky silver powder, spherical silver powder and low-temperature alloy powder. The low-temperature alloy powder is Sn42Bi58 low-temperature alloy powder of which D50 is 12 [mu] m-15 [mu] m; according to the invention, low-temperature curing, high flexibility, excellent conductivity and direct weldability are integrated, and a solution suitable for local repair of a flexible printed circuit board and direct mounting of a jumper and a Mini LED chip is provided.

A leadless high-sensitivity all-quartz differential resonant pressure sensor chip comprises a quartz protection layer, the quartz protection layer is in bonding connection with a first quartz resonance layer, and the first quartz resonance layer, a quartz differential layer, a second quartz resonance layer and a quartz intermediate layer are in sealed connection through a glass frit bonding technology. The quartz middle layer and the quartz temperature sensing layer are in butt joint through a bonding technology, and the quartz temperature sensing layer and the quartz base are fixed through a glass frit bonding technology. After the conductive silver paste is subjected to high-temperature curing treatment, electrode signal conduction between the gold-plated lead columns and the first quartz resonance layer, the second quartz resonance layer and the quartz temperature sensing layer is realized; the differential output effect is remarkably improved, and conjugate interference is effectively restrained; the long-term stability of the vacuum sealing device is improved; the sensor sensitivity is improved; the reliability and the stability of electrical connection are improved; the problem of temperature measurement lag of an external temperature sensor is eliminated, and the precision of the sensor is further improved.

The utility model discloses a full-opening steel plate with a buffer metal layer for battery printing, and belongs to the technical field of solar battery printing. The full-opening steel plate with the buffer metal layer for battery printing comprises a frame, an annular auxiliary material piece and a graphical steel plate, the graphical steel plate is arranged on the annular auxiliary material piece, an avoiding area is larger than a graphic area of the graphical steel plate, the graphical steel plate comprises the buffer metal layer and a first metal layer, the graphic area of the buffer metal layer is provided with a plurality of first grid line holes, and the first grid line holes are communicated with the annular auxiliary material piece. A plurality of second grid line holes are formed in the pattern area of the first metal layer, at least one buffer metal layer is arranged on the pasting and printing face of the first metal layer, the first grid line holes are communicated with the corresponding second grid line holes, and the hardness of the buffer metal layer is smaller than that of the silicon wafer. According to the utility model, the surface of the steel plate can be matched with the uneven surface of the silicon wafer in the printing process, so that the consumption of printing silver paste is saved, the stable batch production is facilitated, and the electrical performance of the battery piece is improved.

The invention provides a high-resolution thick-film photosensitive silver paste composition, a preparation method thereof and application of the high-resolution thick-film photosensitive silver paste composition in preparation of conductive wiring, and relates to the technical field of thick-film paste. The high-resolution thick-film photosensitive silver paste composition comprises the following components in percentage by mass: 75-87% of conductive phase metal powder, 0.6-3.5% of an inorganic binding phase, 8-17% of a photosensitive prepolymer, 2-8% of a compound organic solvent, 1-4.5% of a photosensitive active monomer and 0.5-2.5% of a polymerizable initiator containing C = C double bonds. According to the photosensitive silver paste composition, the conductive phase metal powder, the inorganic binding phase, the photosensitive prepolymer, the compound organic solvent, the photosensitive active monomer and the polymerizable initiator containing the C = C double bonds are regulated, matched and scientifically matched, so that the photosensitive silver paste composition can be firmly attached to a substrate; and the effects of high sensitivity, high resolution and low resistivity are achieved.

The invention discloses a TOPCon solar cell electrode electroplating technology, and relates to the field of solar cell technology materials, and the technology comprises the following operation steps: S1, carrying out laser grooving on a front surface layer and a back surface layer of an N-type silicon wafer, forming a front surface grid line pattern and a back surface grid line pattern, and exposing a p + emitter and an n + field region; s2, pre-cleaning a slotted region of the n + field region; s3, putting the N-type silicon wafer into an electroplating device I for electroplating; s4, pre-cleaning the p + emitter slotting region; s5, putting the N-type silicon wafer into an electroplating device II for electroplating; and S6, performing high-temperature annealing on the N-type silicon wafer. According to the TOPCon solar cell electrode electroplating process, the copper and nickel electroplating technology is utilized, the use of silver paste can be reduced or omitted, the non-silicon cost in the cell manufacturing process can be reduced, and the problem that the silver valence is out of control due to the increase of the photovoltaic solar silver consumption can be relieved and improved.

The invention belongs to the technical field of coatings, and discloses a room-temperature curing water-based Dacromet coating as well as a preparation method and application thereof. The room temperature curing water-based Dacromet coating is prepared from 10 to 15 parts of silica sol, 20 to 40 parts of water, 0.1 to 0.5 part of inorganic acid, 5 to 15 parts of silane monomer, 2 to 10 parts of aluminum silver paste, 30 to 50 parts of flaky zinc powder, 0.5 to 2 parts of corrosion inhibitor, 0.5 to 5 parts of dispersing agent, 0.5 to 2 parts of multiwalled carbon nanotube, 0.5 to 2 parts of graphene, 0.05 to 0.5 part of defoaming agent and 0.05 to 0.5 part of wetting agent. According to the invention, through accurate screening and proportion optimization of all the components, the synergistic interaction among all the components is realized, so that the prepared coating can be cured only at room temperature. After being cured, the prepared coating shows excellent adhesive force and can be firmly attached to the surface of a base material; and in the aspect of corrosion resistance, by virtue of the shielding effect of the sheet zinc and the graphene and the synergistic effect of multiple protection mechanisms of cathode protection of the zinc-aluminum and the carbon nanotubes, the coating has excellent corrosion resistance, and an energy-saving, low-carbon and efficient protection solution is provided for a fastener of an electric power system.

This invention discloses a surface-mount solid aluminum electrolytic capacitor and its manufacturing method, comprising a capacitor core package, which includes N capacitor cores, N+1 conductive metal meshes, a substrate, anode leads, cathode leads, and a silver paste covering tape. The capacitor core package is encapsulated and electroplated to form a solid aluminum electrolytic capacitor. The capacitor core includes an anode portion, a cathode portion, and an insulating barrier tape. In this invention, the conductive metal mesh sandwiched between the metal pads in the anode portion of the capacitor core and the cathode portion of the capacitor core can achieve the flatness of the core package. The silver paste covering tape located on the side of the cathode portion of the core package is embedded in the gap formed between two adjacent capacitor cores due to the conductive metal mesh sandwiched, forming an integrated connection. This prevents the resin encapsulant from being squeezed into the core layers during encapsulation, preventing core deformation damage that could lead to increased leakage current and increased ESR. Furthermore, it can prevent insufficient capacitance or even capacitor failure caused by delamination between cores.

The invention relates to the technical field of solar cells, and particularly discloses conductive paste for a solar cell, a preparation method of the conductive paste and an electrode. The conductive paste for the solar cell comprises the following components in percentage by weight: 88%-92% of carbon-based nano-copper particles, 4%-6% of glass powder and 4%-6% of an organic additive, the carbon-based nano-copper particles are prepared by reacting copper chloride with glucose and then calcining, the particle size is 52-100nm, and copper oxidation is inhibited by using a carbon layer; the organic additive is composed of a stabilizer, resin and an organic solvent according to a ratio of 1: 3: 9. The conductive material is prepared by mixing, dispersing, grinding and filtering, and can be prepared into a solar cell conductive material by silk-screen printing and high-temperature sintering. The conductive paste is low in cost, high in oxidation resistance and excellent in conductivity, and can replace silver paste to reduce the manufacturing cost of the solar cell, improve the performance and prolong the service life.