641 results about "Chemical conversion" patented technology

The present invention provides: a steel sheet which contains Ni, Cu and Sn, and has excellent chemical conversion treatability; and a component which includes said steel sheet.　A steel sheet and a component including the same according to the present invention are characterized by having a chemical composition containing, in mass %, 0.010-1.000% of Ni, 0.010-1.000% of Cu, and 0.003-1.000% of Sn, and by the emission intensities of Ni, Cu, and Sn in the surface layer of the steel sheet as measured by high-frequency glow discharge optical emission spectrometry satisfying the following relationships.　Ni: Surface layer maximum intensity / Bulk intensity ≤ 1.5 Cu: Surface layer maximum intensity / Bulk intensity ≤ 1.3 Sn: Surface layer maximum intensity / Bulk intensity ≤ 15

The invention discloses a novel organic pollutant traceability model construction method based on multi-environment medium data, and aims to solve the problem of deformation compensation of source fingerprints in chemical conversion, interphase distribution and medium migration processes. According to the method, a constrained cost matrix is generated by constructing a micro-deformable kernel, hybrid expert gating weighting is carried out, capacity and rate constraints are injected, a shared potential source fingerprint is solved and introduced by adopting staged cascaded entropy regular optimal transmission joint, reverse optimal transmission and two-way cyclic consistency reconstruction and alignment are combined, and the optimal transmission performance is improved. The technical effects of obtaining the compensated source fingerprint and the source contribution rate and improving the cross-medium traceability accuracy and interpretability are achieved.

The invention discloses a drug molecule generation optimization method based on deep reinforcement learning, in order to overcome the problems of unbalanced distribution of existing drug and target point data and the like, a backbone network structure of an LSTM and transformer structure is established to solve the generation optimization of drug molecules, a local module is improved to reinforce performance, then reinforcement learning is added, and the drug molecule generation optimization method based on deep reinforcement learning is realized. The attributes of molecules generated in each round are processed to serve as loss of deep learning and award of reinforcement learning, and the model is dynamically corrected, so that high-quality drugs which can be effectively combined with target spots, are high in water solubility and moderate in stability and can be easily absorbed by human bodies can be designed. The measurement standard adopted by the attribute optimization task is chemical conversion property MMPs, and the hydrophobicity, solubility and clearance rate of molecules are used as evaluation indexes. By adopting the model provided by the invention, on the basis of ensuring the basic stability of a new drug, better target binding activity can be obtained.

The present invention provides a steel sheet containing Ni, Cu, and Sn, which has excellent chemical conversion treatability, and a part including the steel sheet. The steel sheet and parts including the steel sheet of the present invention have a chemical composition containing, in mass%, Ni: 0.010 to 1.000%, Cu: 0.010 to 1.000%, and Sn: 0.003 to 1.000%, and are characterized in that the emission intensities of Ni, Cu, and Sn in the surface layer of the steel sheet, measured by high-frequency glow discharge optical emission spectroscopy, respectively satisfy the following relationships: Ni: Maximum surface strength / bulk strength ≦ 1.5 Cu: Maximum surface strength / bulk strength ≦ 1.3 Sn: Maximum surface strength / bulk strength ≦ 15

The utility model provides a formation tank aluminum foil cleaning device and a formation device, and belongs to the technical field of electrode foil formation equipment. When an aluminum foil penetrates through the lower portion of a cleaning press roller, pure water is injected into a cleaning tank, the cleaning press roller presses the aluminum foil into the cleaning tank, and the aluminum foil is cleaned with pure water in the forward movement process of the aluminum foil; the cleaning compression roller is provided with a through cavity, pure water enters the cleaning compression roller, and along with rotation of the cleaning compression roller, the water comes out of the water outlet holes to repeatedly clean the surface of the aluminum foil, so that the surface of the aluminum foil is cleaned up, and tank liquid in the formation tank is not prone to being polluted; the aluminum foil sequentially penetrates through the upper portion of the first transmission roller, the lower portion of the cleaning pressing roller and the upper portion of the second transmission roller, the cleaning pressing roller is located below the first transmission roller and the second transmission roller, water obtained after cleaning flows back into the cleaning tank along with the inclination angle of the aluminum foil, and the influence of pure water on the concentration of formation liquid is reduced; and water flowing back to the cleaning tank can be recycled, so that waste is reduced.

The invention relates to an Escherichia coli engineering strain for producing 2, 3-pentanediol as well as a construction method and application of the Escherichia coli engineering strain, and the method comprises the following steps: constructing recombinant plasmids pACYC-IlvA *-ThrA * BC for expressing an IlvA * gene of threonine deaminase, a ThrA gene of asparaginic acid kinase I, a Thr B gene of homoserine kinase and a ThrC gene of threonine synthetase; the method comprises the following steps: constructing a recombinant plasmid pRSF-Ilv2C-Aro10 for expressing an Ilv2C gene of acetohydroxy acid synthetase and an Aro10 gene of propiophenone dehydrogenase; and chemically converting the recombinant plasmid pACYC-IlvA *-ThrA * BC and the recombinant plasmid pRSF-Ilv2C-Aro10, and transferring the recombinant plasmid pACYC-IlvA *-ThrA * BC and the recombinant plasmid pRSF-Ilv2C-Aro10 into escherichia coli so as to obtain the escherichia coli engineering strain for producing the 2, 3-pentanediol. According to the escherichia coli engineering strain, the biosynthesis of 1.61 g / L of 2, 3-pentanediol is realized by using L-threonine and 40 g / L of glucose.

The invention relates to a filamentous-corrosion-resistant zinc-aluminum-magnesium coated steel plate and a preparation method thereof, and belongs to the technical field of metal surface modification. The steel plate comprises a zinc-aluminum-magnesium coating and a chemical conversion coating attached to at least part of the surface of the zinc-aluminum-magnesium coating, and the chemical conversion coating is formed by chemical reaction of chemical conversion liquid and the zinc-aluminum-magnesium coating. The components and content in the chemical conversion liquid are reasonably controlled, the chemical conversion liquid is coated on the surface of the zinc-aluminum-magnesium coating steel plate, and the chemical conversion liquid and the zinc-aluminum-magnesium coating are subjected to chemical reaction to form a compact, stable and corrosion-resistant chemical conversion film. And firm chemical bonding is formed between the chemical conversion film and the zinc-aluminum-magnesium coating steel plate, so that the whole coating system is more stable, invasion of corrosive media is effectively blocked, and the filiform corrosion resistance of the whole coating system is improved.

The invention relates to hot baking type selective ink and a preparation method thereof. The hot baking type selective ink comprises the following components in parts by mass: 10-20 parts of acrylic resin, 10-20 parts of fluorine-containing polyacrylate, 20-40 parts of an active monomer, 3-10 parts of a photoinitiator, 5-20 parts of modified boron nitride and 1-10 parts of an auxiliary agent, wherein the modified boron nitride is obtained by reacting boron nitride with a silane coupling agent and polypropylene glycol diglycidyl ether. The fluorine-containing polyacrylate is obtained by reacting fluorine-containing acrylate, acrylate and maleic anhydride. According to the invention, not only are the film-forming property and the stability of the ink improved, but also the corrosion resistance, the strength and other properties are enhanced, the protective effect can be more effectively exerted, the stable operation of the PCB is ensured, the problems in the prior art are solved, the requirements of the industry on multiple properties of products are met, and the application prospect is good.

The invention discloses a pickling and passivating process for stainless steel pipes and pipe fittings, which belongs to the technical field of pickling and passivating and comprises the following steps: removing oil stains on the stainless steel pipes and pipe fittings by using a degreasing agent; washing and cleaning the surface of the stainless steel pipe fitting; removing welding spots and high-temperature oxides on the surface of the stainless steel pipe fitting by using a pickling solution; removing a grey film and impurities on the surface of the stainless steel pipe fitting by using a release agent; forming a net-shaped chemical conversion film and a precipitation type adsorption film on the surface of the stainless steel pipe fitting by using a passivating agent; neutralizing and washing the stainless steel pipe fitting; forming a nano composite oxide film by using a dehydrating agent; and hot pure water washing is conducted on the stainless steel pipe fitting through heated pure water, and the final stainless steel pipe fitting is obtained. The method solves the problems that in the traditional pickling process, nitric acid, sulfuric acid and hydrochloric acid are used, acid mist is easily generated in the pickling process, the environment is polluted, waste liquid treatment is complex, and environmental protection requirements are not met.

The present disclosure provides a plasma reactor (100) for plasma induced chemical conversion of one or more compounds in a fluid medium. The reactor comprising a passage (1); an outlet (3); and at least two electrode pairs. Each electrode (10) comprises a jacket (11), an electrode rod (12), and an inlet (4) for injecting a primary gas (G1) flow along the rod. The rods are distributed around the passage. Rod tips are positioned upstream the throat of the passage. A second inlet (5) injects a secondary gas (G2) upstream or downstream the throat area (2). An operating circuit is driven to repetitively and simultaneously power the electrode pairs to generate an arc discharge (A) bridging the electrodes of each electrode pair. Neighboring electrodes of adjacent pairs are driven at the same time-varying potential. The electrodes are galvanically isolated each other and the power source.

The invention relates to a preparation method and application of carbon nanosphere modified biomass monolithic composite porous carbon, and belongs to the field of energy and chemical industry, and the preparation method comprises the following steps: S1, cutting pine into pine chips, drying, and carbonizing at high temperature to obtain a carbonized product; s2, dipping the carbonized product in a hydrochloric acid solution, then washing the carbonized product to be neutral, dehydrating the carbonized product, and polishing the dehydrated carbonized product; s3, putting the composite porous carbon into a glucose solution, carrying out vacuum-assisted impregnation, transferring into a hydrothermal reaction kettle, carrying out hydrothermal carbonization, drying, and carrying out constant-temperature chemical conversion; and S4, placing the composite porous carbon in a potassium bicarbonate solution for vacuum impregnation, drying and dehydrating, placing in a tubular furnace for constant-temperature chemical conversion to obtain a converted and carbonized product, impregnating in hydrochloric acid, washing, and drying. The specific surface area of the integral composite porous carbon is effectively increased, the electrode / electrolyte interface contact characteristic is remarkably optimized, and the pore channel space utilization rate and the energy storage performance are synchronously improved.

In a first aspect, a coating solution includes a soluble polymer and a crosslinking precursor. The soluble polymer includes an imide group. The crosslinking precursor includes a first amine group that is either reactive or passivated towards crosslinking and one or more additional amine groups, wherein the one or more additional amine groups has been passivated towards crosslinking such that the crosslinking precursor can be chemically converted, thermally converted, photo-converted or dissociated to form at least two reactive amines. In a second aspect, a process for forming a polymer film includes: (a) casting a coating solution, (b) activating the crosslinking precursor using an external stimulus to form at least two reactive amines and crosslink the polymer, and (c) drying the polymer film. The coating solution includes a soluble polymer, including an imide group, and a crosslinking precursor.

The invention provides a preparation method of an Al18F-labeled PSMA radiopharmaceutical, according to the preparation method, through adjustment of a reaction system, the labeling time efficiency, the radiochemical purity of a final product, the radiochemical conversion rate and the product yield are ensured, meanwhile, the requirement for the fluorination reaction temperature in the labeling process is effectively reduced, and the product yield is improved. The preparation method of the Al18F-labeled PSMA radiopharmaceutical provided based on the method has good applicability and thorough reaction, new impurities are not introduced into a final product due to reduction of the reaction temperature or adjustment of a reaction system, the variety and content of the impurities in the final product can be further reduced and controlled, and the preparation method is suitable for industrial production. And the medication safety of a patient is further ensured. In addition, the final product obtained by the preparation method provided by the invention has good inter-batch uniformity, and has good stability under the storage conditions of 30 DEG C + / -2 DEG C and 40 DEG C + / -2 DEG C.

The invention provides a coral reef-shaped bifunctional catalyst for preparing green hydrogen through biomass gasification and synchronously decarbonizing and a preparation method of the coral reef-shaped bifunctional catalyst, and belongs to the field of biomass high-value utilization. The activity and the stability of the catalyst are improved by regulating and controlling the mutual matching of the active phase and the carrier through the falling position of the active metal; the coral reef-shaped bifunctional catalyst is directionally constructed, and a confinement environment required by bond breaking and CO2 conversion is provided by utilizing the unique spatial configuration of the carrier. The catalyst utilizes a green hydrogen production active center to directionally break bonds in a thermochemical conversion process, so that the content of green hydrogen in synthesis gas is increased; cO2 in the synthesis gas is absorbed and converted by using a decarburization active center, and the content of CO2 at an outlet of the reactor is reduced. The bifunctional catalyst prepared by the invention has relatively high activity and cycling stability, two reaction processes (bond breaking, decarbonylation and water gas shift reaction) are coupled to realize preparation of high-H2 / CO (3.84) synthesis gas through biomass thermochemical conversion, and the application prospect is wide.

The invention provides a color-coated steel plate with heat-insulating, antibacterial and super-hydrophobic functions, which comprises a metal substrate, and a chemical conversion layer and a primer layer which are sequentially arranged on at least one surface of the metal substrate, and a composite functional finish paint layer is arranged on the primer layer; the composite functional finish paint layer comprises film-forming resin, a near-infrared reflection composite pigment, a dual-mode antibacterial agent and fluorinated nano silicon dioxide; the finishing coat layer in the color-coated steel plate has heat-insulating and antibacterial capabilities and a super-hydrophobic self-cleaning function at the same time; the invention also provides a preparation method of the color-coated steel plate, which comprises the following steps: carrying out surface pretreatment on the metal substrate to form the chemical conversion layer; coating the chemical conversion layer with a primer and carrying out first curing to form a primer layer; the primer layer is coated with finish paint coating, then multi-temperature-zone gradient curing is conducted, and a composite functional finish paint layer is formed; according to the preparation method, a multi-temperature-zone gradient curing process is adopted, the temperature of different curing stages is controlled, and a stable functional structure is constructed.

The present disclosure provides a plasma reactor (100) for plasma induced chemical conversion of one or more compounds in a fluid medium. The reactor comprising a passage (1); an outlet (3); and at least two electrode pairs. Each electrode (10) comprises a jacket (11), an electrode rod (12), and an inlet (4) for injecting a primary gas (G1) flow along the rod. The rods are distributed around the passage. Rod tips are positioned upstream the throat of the passage. A second inlet (5) injects a secondary gas (G2) upstream or downstream the throat area (2). An operating circuit is driven to repetitively and simultaneously power the electrode pairs to generate an arc discharge (A) bridging the electrodes of each electrode pair. Neighboring electrodes of adjacent pairs are driven at the same time-varying potential. The electrodes are galvanically isolated each other and the power source.

The invention discloses a method for producing benzoic acid by taking waste plastic as a raw material, and relates to the technical field of waste plastic high-valued treatment. The method comprises the following steps: mixing waste plastic and a catalyst in an oxygen-containing atmosphere for reaction to obtain a benzoic acid monomer; the waste plastic at least comprises polystyrene; the catalyst comprises at least one of a single metal oxide, a composite metal oxide and a supported metal oxide. The invention provides a chemical method for converting waste plastics into high-value benzoic acid, and solves a series of problems of harsh chemical conversion conditions, complex products, difficult separation, low added value and the like of the existing waste plastics. The benzoic acid obtained by the invention can be applied to production of food additives, essence and plastic monomers, and high-valued and green circulation of waste plastics is realized.

To provide methods for controlling continuous, unmodulated, multiple catalytic conversion step processes in order to accommodate changes in the performance of each catalyst during the course of the process when operating chemical conversion processes using two or more sequential catalytic conversions.SOLUTION: In this method, certain process parameters are used in a manner that is indicative of changes in catalyst performance, and this control method provides for adjustment of at least one of: the absolute amount of catalytically active species, the relative amounts of each of a first catalyst and a second catalyst, and at least one of the rate of feed or concentration of raw material to a reaction zone.SELECTED DRAWING: None

The invention belongs to the technical field of metal protection, and particularly discloses a gradient temperature-resistant coating system and an application method thereof.The method comprises the steps that a treated coating substrate is immersed in chemical conversion liquid for a reaction, and a compact chemical conversion film is formed on the surface of the substrate; uniformly dispersing metal powder in epoxy-organic silicon resin, spraying the epoxy-organic silicon resin on a substrate with a chemical conversion film, and drying to obtain a bottom layer; spraying a modified organic silicon resin coating on the bottom layer, and drying to obtain a middle layer; ultrasonically dispersing aerogel in ethanol to obtain aerogel suspension, and spraying the aerogel suspension on the middle layer to obtain the outer layer. According to the gradient temperature-resistant coating system disclosed by the invention, through the gradient structure design of strong combination of the bottom layer, temperature stabilization of the middle layer and strong reflection of the surface layer and the component synergistic effect, the technical barrier of dual-temperature-range protection and interlayer coordination is broken through, and the core problems of dual-temperature-range protection splitting, interlayer failure and poor structural durability are solved; and a systematic solution is provided for coating protection in an extreme high-temperature environment.

The invention discloses an automotive interior metal part spraying process based on a high-adhesion water-based paint, which comprises the following steps: firstly, carrying out alkali washing and acid washing treatment on a metal part, so that the metal surface is clean and micro roughness is formed; then carrying out chemical conversion treatment by adopting a water-based conversion solution containing amino silane and epoxy silane to form a compact and uniform conversion film on the metal surface; then water-based prime coat is sprayed on the surface of the conversion film, the thickness of a dry film is controlled to be 3-8 microns, and good substrate binding force is provided after heating; the preparation method comprises the following steps: firstly, spraying a water-based finishing coat taking hydroxy acrylic resin as a main body, adding a blocked isocyanate cross-linking agent, uniformly coating through an electrostatic spraying process, and finally curing under a sectional heating condition to obtain a coating with excellent durability; according to the present invention, the adhesion between the water-based paint and the metal base material is effectively improved, the durability of the paint film in the damp and hot salt mist environment is improved, the use of the organic solvent is reduced, and the advantages of environmental protection, low VOC emission and suitableness for industrial large-scale production are provided.

To provide a chemical conversion solution, a method for manufacturing an electrolytic capacitor, and an electrolytic capacitor that can improve the characteristics of the electrolytic capacitor.SOLUTION: A chemical conversion solution is used to repair an aluminum oxide film formed on at least one of an anode foil and a cathode foil included in an electrolytic capacitor element, and contains at least one of phosphoric acid, phosphorous acid, and hypophosphorous acid, and a chelating agent that forms an aluminum complex that bonds with the aluminum oxide film.SELECTED DRAWING: Figure 5

The invention belongs to the technical field of magnesium alloy corrosion prevention, and particularly relates to a galvanic corrosion protection method and a galvanic corrosion prevention magnesium-containing connecting assembly, the galvanic corrosion protection method and the galvanic corrosion prevention magnesium-containing connecting assembly are applied to galvanic corrosion formed by contact of a magnesium alloy structural part and a dissimilar metal connecting part, and the galvanic corrosion protection method comprises the steps that firstly, chemical conversion film treatment is conducted on the magnesium alloy structural part (1); 2, carrying out first coating anti-corrosion treatment on the dissimilar metal connecting piece (2) and the fastening assembly; 3, coating a structural adhesive (6) on a contact binding surface formed between the magnesium alloy structural part (1) subjected to the chemical conversion film treatment and the dissimilar metal connecting part (2) subjected to the first coating anti-corrosion treatment; and fourthly, the magnesium alloy structural part (1) and the dissimilar metal connecting part (2) with the contact binding face coated with the structural adhesive (6) are locked through the fastening combination part, an assembly part is formed, and second coating anti-corrosion treatment is conducted on the assembly part. By adopting the method, the galvanic corrosion risk is greatly reduced.

Provided is a steel sheet comprising a base steel sheet and a chemical conversion coating disposed on the surface of the base steel sheet. The steel sheet is characterized in that: the base steel sheet has a chemical composition containing, in mass%, 0.10-1.00% of Cr; and the S-maximum emission intensity and the Cr-maximum emission intensity of the chemical conversion coating as measured by a high-frequency glow discharge emission spectrometer (GDS) satisfy the relations of 1.1≤S-maximum emission intensity / S-emission intensity of base steel sheet≤20.0, and 1.1≤Cr-maximum emission intensity / Cr-emission intensity of base steel sheet≤5.0. Also provided is a component including the steel sheet.

The invention relates to the technical field of magnesium alloy surface treatment, in particular to a method for preparing a high-corrosion-resistance golden conductive conversion film on the surface of a ZK61 magnesium alloy, and the two-phase property of Zr and Zn is utilized to dissolve Zr and Zn substances stored on the surface layer in an oxidation state in a high-alkalinity environment so as to achieve the purpose of removing high potential phases. Meanwhile, the Mg element is protected in a high-alkalinity oxidation state environment, then a layer of rare earth conversion film is prepared in an alkaline oxidation environment, then a golden conductive conversion film is prepared, and then drying and detection are performed after sealing, so that the problems that in the production and heat treatment process of the ZK61 magnesium alloy, Zr and Zn segregation phenomena are likely to occur, galvanic corrosion of the ZK61 magnesium alloy is serious, and the service life of the ZK61 magnesium alloy is prolonged are solved. And the corrosion resistance is poor. And therefore, even in the preparation process of the chemical conversion film, the integrity and corrosion resistance of the chemical conversion film are greatly influenced due to severe galvanic corrosion, and the corrosion resistance of the conductive conversion film with lower contact resistance is poorer.

Disclosed is an electrode comprising a catalyst and an ionic liquid, wherein the catalyst comprises a support and a compound represented by structural formula (I). Also disclosed are methods of making the electrode, and methods of electrochemically reducing CO2, CO, or CO2 / CO mixture to methanol using the electrode.

The present disclosure provides an electrocatalytic reactor and method of electrochemical conversion of carbon dioxide (CO2) into value-added products (VAPs) The electrocatalytic reactor includes Stainless Steel (SS), or Copper (Cu) or Copper alloy (Cu-alloy) electrodes, wherein one or more anode is an SS electrode, wherein the electrodes act as electrocatalyst, and acidified deionised water (H3O+) is used as electrolyte for generation of H2 gas through bulk electrocatalysis, wherein a catalyst initiator that includes 80% by weight of metal carbonates or bicarbonates of Mg or Na with 20% by weight of MgO is used to facilitate the reaction of the short-lived cation radical intermediates formed by C- C coupling reactions on the cathode surface leading to hydrolysis and VAPs formation with high specificity and selectivity.

An object of the present invention is to provide a method of producing a metallic material having a chemical conversion coating, which chemical conversion coating is formed to achieve excellent external appearance after chemical conversion treatment, as well as excellent corrosion resistance as evaluated by, for example, an exposure test or the VDA621-415 method after painting, and which chemical conversion coating can be used in a wide temperature range. The object is achieved by a method of producing a metallic material having a chemical conversion coating, the chemical conversion coating being formed on or over a surface of the metallic material, the method including: Step I of bringing the metallic material into contact with a chemical conversion treatment agent containing: a source of fluorine ions; a source A of ions containing zirconium; a source B of ions containing aluminum; and 0.0001 g / L to 1.000 g / L of a water-soluble or water-dispersible polymer, or a salt thereof C, containing structural units represented by the following Formula (i) at not less than 90% by mole; and Step II of bringing the metallic material that has been brought into contact with the chemical conversion treatment agent, into contact with an aqueous solution with a pH of 4.0 to 12.0 at least once; wherein the value obtained by subtracting the value obtained according to the following Formula (2) from the value obtained according to the following Formula (1) is not less than 0.2. Ac+Bc×pH−2.78 D / 0.183×t / 1.55

The surface-treated steel sheet of the present invention comprises a base steel sheet, a plating layer formed on the base steel sheet and containing 50% by mass or more of Zn and 0.3% by mass or more of Mg, and a chemical conversion coating formed on the plating layer, the chemical conversion coating containing a silicon compound, P and F, and Mg, the average Si concentration of the chemical conversion coating being 10% by mass or more, the chemical conversion coating having an F-Mg concentrated layer having an Mg concentration of 1.50% by mass or more and 40.00% by mass or less and an F concentration of 0.50% by mass or more and 5.00% by mass or less in a region in contact with an interface between the chemical conversion coating and the plating layer, the thickness of the F-Mg concentrated layer being 1.0 nm or more, and the average Mg concentration being less than 0.50% by mass and the average F concentration being less than 0.50% by mass in a region other than the F-Mg concentrated layer in the chemical conversion coating.

The purpose of the present invention is to provide a cationic electrodeposition coating composition capable of exhibiting high rust prevention properties even without subjecting a coated product to chemical conversion treatment.　The present invention provides a cationic electrodeposition coating composition containing (A) an aminated epoxy resin and (B) a niobium compound. The (B) niobium compound can be niobium oxide sol or niobium oxide colloidal particles obtained by stabilizing niobium oxide sol. The cationic electrodeposition coating composition according to the present invention may further contain: (C) a blocked polyisocyanate curing agent; (D) a rust preventive auxiliary agent selected from the group consisting of silica, a silane coupling agent, a titanium coupling agent, and a mixture thereof; (E) a phosphoric acid compound; or (F) a polyamidine compound. The present invention also provides a coated product obtained by using the cationic electrodeposition coating composition. The present invention further provides a coating method using the cationic electrodeposition coating composition.

The embodiment of the application provides a calcium superphosphate chemical conversion device capable of improving stirring rate, and relates to the technical field of phosphate fertilizer processing. The device comprises a mixing tank, a feeding port is arranged at the top end of the mixing tank, a first motor is arranged at the center position of the top end of the mixing tank, a rotating shaft is fixedly arranged on one side of the first motor, a first gear is fixedly arranged on one side of the rotating shaft, second gears are symmetrically and meshingly connected on the two sides of the first gear, and rotating rods are fixedly arranged on one side of the two second gears. Through the operation of the first motor, the rotating shaft is driven to rotate, the two second gears on the two sides are driven to rotate through the meshing of the first gear, and then the rotating rods are driven to rotate, the first stirring rod, the L-shaped rod and the second stirring rod are driven to synchronously rotate, the coverage area is improved through the first stirring rod, the L-shaped rod and the second stirring rod, and the stirring process is more uniform and efficient, and good sufficient stirring is achieved.