353 results about "Ether solvent" patented technology

The invention relates to the field of lithium metal batteries, and provides a lithium metal battery, a manufacturing method thereof and electric equipment, which are at least beneficial to improving the interface stability and safety of the lithium metal battery. The manufacturing method comprises the following steps: preparing an initial battery cell, injecting a first electrolyte into the initial battery cell, and then carrying out a first formation process, the first electrolyte comprising the following components: 8-23 wt% of a lithium salt, 0.01-5 wt% of carbon dots, 0.1-10 wt% of lithium nitrate and an ether solvent; a second formation process is carried out after a second electrolyte is injected into the initial battery cell, the second electrolyte comprises the following components: 8-23 wt% of a lithium salt, 5-40 wt% of a film-forming additive and an ionic liquid, and the ionic liquid comprises pyrrolidinium cations.

The invention provides a hole transport layer precursor solution, a hole transport layer, a preparation method and application of the hole transport layer, and a perovskite cell, and belongs to the technical field of hole transport layers. The hole transport layer precursor solution comprises a self-assembled single molecule and an organic solvent; the organic solvent comprises a solvent A, a solvent B and a solvent C; the solvent A comprises more than one of a phosphate ester solvent and an alcohol ether solvent; the solvent A contains four hydrogen bond receptors; the boiling point of the solvent A is 215-290 DEG C; the solvent B comprises more than one of ethanol, isopropanol, normal propyl alcohol, butanol, ethylene glycol and N, N-dimethylformamide; the solvent C comprises more than one of ethyl acetate and normal hexane. A ternary hydrogen bond network is formed through the solvent A, the solvent B and the solvent C, the agglomeration degree of SAM molecules is remarkably reduced, and the device performance is improved.

A method for producing an aromatic heterocycle-substituted difluoroacetic acid derivative having a partial structure represented by the formula (III), by reacting an N-oxido aromatic heterocyclic compound having a partial structure represented by the formula (I) with tetrafluoroethylene in the presence of a compound represented by the formula (II): R—YH, in a solvent selected from an aromatic hydrocarbon solvent, an ester solvent and an ether solvent:

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 a low-concentration ether electrolyte adaptive to a high-voltage high-nickel ternary lithium ion battery, a preparation method of the low-concentration ether electrolyte and the lithium ion battery, and relates to the technical field of batteries. The ether electrolyte comprises a solvent and a solute; the solvent comprises an ether solvent, and is specifically at least one of 4-cyano tetrahydropyran, 2-(tetrahydro-2H-pyran-4-yl) acetonitrile, 2-methoxyacetonitrile, 2-ethyoxyl acetonitrile, 3-methoxypropionitrile, 3-ethyoxyl propionitrile, 3-butoxyl propionitrile, ethylene glycol bis (propionitrile) ether and 3-{2-[2-(2-cyano ethyoxyl) ethyoxyl] ethyoxyl} propionitrile. The ether solvent contains cyano groups, the strong electronegativity of the cyano groups enables the cyano groups to be coordinated with transition metal ions in the ternary material, and the cyano groups are preferentially adsorbed at the interface of the positive electrode material, so that the arrangement of solvent molecules at the interface has directivity, the proportion of ether oxygen bonds and carbon hydrogen atoms in double electric layers is reduced, and the performance of the positive electrode material is improved. And the sites which are easy to generate dehydrogenation reaction in the molecules are far away from the high-voltage positive electrode interface which is easy to generate oxidation reaction.

The invention provides an electrolyte suitable for a lithium negative electrode or a negative-electrode-free lithium battery, a lithium metal battery and a negative-electrode-free battery. The electrolyte comprises a solvent, a diluent and fluorine-containing lithium salt, wherein the solvent is selected from one or more of a linear ether solvent, a cyclic ether solvent and a siloxane solvent, and the linear ether solvent, the cyclic ether solvent and the siloxane solvent optionally have cyano substituent groups; the diluent is selected from one or more of a group consisting of fluoro aromatic hydrocarbon and fluoro alkane. The specific solvent and diluent are used, and the additive is further used, so that the electrochemical stability window and the capacity retention ratio and the lithium deposition efficiency of the battery are remarkably improved.

The invention relates to the technical field of electroplating, in particular to a nickel stripping agent, a preparation method of the nickel stripping agent and a nickel plating layer stripping method. The nickel stripping agent comprises the following raw materials: an oxidizing agent, a complexing agent, a dissolution promoter, a surfactant and a corrosion inhibitor, wherein the mass ratio of the oxidizing agent to the complexing agent to the dissolution promoter to the surfactant to the corrosion inhibitor is (4-15): (3-25): (1-11): (0.01-1): (0.01-5); wherein the oxidizing agent is nitrobenzoic acid; the complexing agent is one or more of 2-amino-2-methyl-1-propyl alcohol, acetylacetone, nitrilotriacetic acid, nitrilotriacetic acid sodium salt, acrylate, sodium gluconate and ethylenediamine hydrochloride; the dissolution promoter is an alcohol ether solvent. According to the nickel stripping agent, the oxidizing agent with relatively low toxicity and a non-toxic or low-toxicity non-volatile complexing system are adopted, nickel can be completely removed, a base material cannot be eroded, and the threat to the health of operators can be remarkably reduced.

The application provides a kind of sodium ion battery with flame-retardant electrolyte, it includes the following components: base electrolyte and functional additives;Wherein, the base electrolyte includes solvent and sodium salt;The solvent includes main solvent and optional secondary solvent;The sodium salt includes main sodium salt and optional secondary sodium salt;The main solvent is phosphorus-containing flame-retardant solvent, the secondary solvent is selected from at least one of carbonate solvent, carboxylic acid ester solvent and ether solvent of non-fluorinated ether;The molar ratio of the phosphorus-containing flame-retardant solvent and sodium salt is 4.2-17:1;The mass fraction of the main sodium salt in sodium salt is 70%-100%;The volume fraction of the main solvent in the solvent is 80%-100%;The mass fraction of the functional additives in the electrolyte is greater than 0 and less than or equal to 5%.The application also provides a kind of sodium ion secondary battery, which includes positive electrode material, negative electrode material and the sodium ion battery with flame-retardant electrolyte of the application.The electrolyte of the application is low in cost, high in safety, and can be compatible with carbon negative electrode.

The present application discloses a battery cell and a preparation method therefor, a battery, and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte. The electrolyte comprises a first non-aqueous electrolyte solution close to the positive electrode sheet and a second gel electrolyte close to the negative electrode sheet. The first non-aqueous electrolyte solution comprises a first solvent and a first lithium salt, and the first solvent comprises a nitrile-based solvent. The second gel electrolyte comprises a polymer layer and a second non-aqueous electrolyte solution accommodated in the polymer layer. The second non-aqueous electrolyte solution comprises a second solvent and a second lithium salt, and the second solvent comprises a linear monoether solvent. The battery cell has long cycle life and good rate performance.

The invention relates to the technical field of solar photovoltaics, in particular to a silicon rod crystal support cleaning agent and a preparation method and application thereof. The silicon rod crystal support cleaning agent comprises the following components in parts by mass: 1.5-4.5 parts of a polymeric dispersant, 1-5 parts of an alkaline passivator, 5-8 parts of inorganic alkali, 1-3 parts of an organic alcohol ether solvent and 79.5-91.5 parts of water. According to the silicon rod crystal support cleaning agent, through coordination and cooperation of all the components, the agent can permeate into tiny gaps to react with silicon powder, the silicon powder is dispersed, dirt on the surface of a crystal support can be efficiently and permanently removed, and residues can be removed through rinsing with a small number of times.

The invention belongs to the field of solid-state batteries, and particularly relates to a lithium metal battery, a high-voltage wide-temperature-range gel polymer electrolyte of the lithium metal battery, a preparation method of the high-voltage wide-temperature-range gel polymer electrolyte and application of the high-voltage wide-temperature-range gel polymer electrolyte. The high-voltage wide-temperature-range gel polymer electrolyte is prepared; the composite monomer comprises a monomer 1 and a monomer 2 in a weight ratio of (1-2): (1-2), the monomer 1 comprises a compound as shown in a formula 1 (1), and the monomer 2 comprises a compound as shown in a formula 2 (2); the basic electrolyte comprises a conductive lithium salt and an ester ether solvent, and the conductive lithium salt comprises LiPF6; the ester-ether solvent comprises an ester solvent, a fluorinated ester solvent and hydrofluoroether in a weight ratio of (4-5): (2-3): (2-3). The electrolyte disclosed by the invention can meet the application requirements of high pressure and wide temperature range, and the high-pressure, low-temperature and high-temperature cycling stability of the electrolyte is improved.

The invention belongs to the technical field of new energy materials, and particularly relates to a solid electrolyte material for a lithium battery and a preparation method thereof. The solid electrolyte material for the lithium battery is a polyurethane elastomer and consists of a polyether ion conduction soft segment and an isocyanate crosslinking hard segment, the soft segment is selected from polyether polyol and accounts for 66-90% of the total mass of the polyurethane elastomer; the hard segment is formed by reacting diisocyanate with a chain extender, and accounts for 10-34% of the total mass of the polyurethane elastomer; and the ether solvent is sealed in the soft segment phase by the polymer network. The polyurethane elastomer disclosed by the invention has high ionic conductivity, excellent mechanical property and good interface compatibility, and can be suitable for different types of lithium batteries, such as lithium ion batteries, lithium metal batteries, high-voltage lithium ion batteries and the like; and the preparation process is simple and suitable for large-scale industrial production.

The invention relates to the technical field of preparation of metal powder materials, and discloses a preparation method of surface-coated scaly zinc powder and the zinc powder.The preparation method comprises the five steps of zinc powder pretreatment, coating liquid preparation, surface coating, drying and curing and screening treatment.The high-purity zinc powder is subjected to ball milling to be of a scaly structure; the method comprises the following steps: adding zinc particles into a coating solution, then adding a coating solution formed by fully mixing a silane coupling agent, an organosilicon compound, an antioxidant, a performance enhancer and a water-containing alcohol ether solvent, filtering and separating zinc powder and the coating solution after a compact coating layer is formed on the surfaces of the zinc particles, drying and curing, and finally screening the cured and cooled zinc powder. The method has the effect of improving the oxidation resistance of the zinc powder.

The invention relates to a low-total-chlorine epoxy resin synthesis method, and belongs to the technical field of epoxy resin preparation. The invention provides a low-total-chlorine epoxy resin synthesis method. The low-total-chlorine epoxy resin synthesis method comprises the following steps: carrying out ring-opening reaction on a dihydric phenol compound and epoxy chloropropane in a mixed organic solvent under the action of alkali metal hydroxide; the mixed organic solvent is composed of a ketone solvent and an ether solvent, the ketone solvent is diisobutyl ketone, and the ether solvent is butyl ether and / or a branched ether compound; then carrying out mixed reaction on the system after the ring-opening reaction and an alkali metal hydroxide solution so as to carry out ring-closing reaction on a ring-opening reaction product; and finally, carrying out impurity removal and purification on the system after the ring-closure reaction to obtain the low-total-chlorine epoxy resin.

A bio-electrode composition contains (A) an ionic polymer material, (B) an addition reaction-curable silicone having at least a hydrosilyl group, (C) a platinum-group catalyst, and a solvent. The bio-electrode composition has a water content of 0.2 mass % or less. The solvent includes one or more of an ether solvent, an ester solvent, and a ketone solvent each of which does not contain a hydroxy group, a carboxyl group, a nitrogen atom, or a thiol group. Thus, present invention provides: a bio-electrode composition capable of forming a living body contact layer for a bio-electrode which is excellent in electric conductivity and biocompatibility, light-weight, and manufacturable at low cost, and which does not leave residue on skin after attachment to and peeling from the skin; a bio-electrode including a living body contact layer formed of the bio-electrode composition; and a method for manufacturing the bio-electrode.

The invention belongs to the technical field of sodium secondary batteries, and particularly relates to a sodium battery electrolyte and a sodium metal / negative-electrode-free sodium battery, the sodium battery electrolyte comprises the following components: a sodium salt and an ether solvent; the ether solvent is a multi-chain ether solvent or a cyclic ether solvent; wherein the multi-chain ether solvent is chain ether containing a branched chain; according to the invention, the multi-chain ether solvent or the cyclic ether solvent is introduced, and the ability of the multi-chain ether solvent or the cyclic ether solvent to form a multipoint coordination configuration with sodium ions can be hindered on the basis that branched chains in the multi-chain ether and a cyclic structure of the cyclic ether have a relatively large steric hindrance effect, so that the dissociation degree of the sodium salt is slightly reduced, and the dissociation efficiency of the sodium salt is improved. According to the present invention, the sodium ion desolvation difficulty is significantly reduced, the sodium ion rapid desolvation is achieved, and particularly the desolvation advantage in the low temperature environment of-70-60 DEG C is significant, such that the efficient reversible deposition-stripping of the sodium metal at the low temperature is achieved, the formation of the sodium dendrite is avoided, and the application of the sodium metal battery under different environmental conditions is improved.

The application discloses an EBR solvent and a rectification preparation process thereof, and belongs to the technical field of semiconductor material processing; wherein the EBR solvent comprises the following components in percentage: 95-98% of propylene glycol methyl ether acetate and 2-5% of propylene glyyl methyl ether. The EBR solvent is prepared by rectification recovery of waste liquid generated in a dilution cleaning process, and the main steps are as follows: S1, sedimentation filtration: filtering solid impurities in the waste liquid; S2, preliminary water removal: removing part of water in the filtered waste liquid through a common distillation tank to obtain primary waste liquid raw material; S3, feeding: introducing the primary waste liquid raw material into a rectification tower for intermittent distillation purification; S4, water removal: removing water in the primary waste liquid raw material by using an extractant; S5, extractant reflux; S6, extractant extraction: after the water is removed, the extractant is extracted; and S7, EBR solvent extraction. The application solves the problem that the purity of the effective component EBR solvent in the photoresist cleaning waste liquid is not high, and the recycling effect is poor.

The application discloses a kind of for multi-substrate coating fast-curable water-based acrylic modified epoxy resin emulsion and its preparation method, first by itaconic acid, alcohol ether solvent and bisphenol A type epoxy resin synthesis epoxy adduct intermediate product, then with other acrylic monomer free radical polymerization is formed acrylic modified epoxy resin with this intermediate product, finally using additional epoxy emulsifier by phase inversion method is made water-based acrylic modified epoxy resin emulsion.The emulsion prepared in the application has higher glass transition temperature, has faster surface dry and curing speed, can satisfy the fast curing of coating film on various substrate workpieces, workpiece offline stacking resistance requirements;Side chain contains a certain amount of carboxyl and hydroxyl, can give coating excellent adhesion, realize good adhesion on various substrates;Resin structure contains a certain amount of bisphenol A type epoxy resin, and epoxy-amine curing agent is well compatible after curing, and coating is uniform.

This invention belongs to the field of sodium-ion battery technology, and discloses a wide-temperature-range sodium-ion battery electrolyte, its preparation method, and its application. This invention uses dimethyl ether solvents of different chain lengths as the main solvent, and matches ether diluents and film-forming additives to prepare a sodium-ion battery electrolyte capable of operating in a wide temperature range of -40 to 60°C. This type of electrolyte exhibits a low freezing point and high thermal stability. Furthermore, the solvent-solvent interactions between the ether diluents and different dimethyl ether solvents in the system weaken the sodium... + The interaction between the sodium ion and the dimethyl ether solvent improves sodium ion dynamics; furthermore, the anion enters the solvation structure and participates in the construction of a stable interface, achieving high rate and high cycling stability.

The application discloses an adsorbent for removing trace metal ions in alcohol ether solvents and a preparation method and application thereof, and belongs to the field of chemical separation technology. The adsorbent is a zirconium-based metal organic cage material with discrete structure formed by coordination self-assembly of a zirconium metal salt and a nitrogen-containing polycarboxylic acid organic ligand. The adsorbent has specific ion nanowells, and can form a strong limited synergistic effect with metal ions. The adsorbent is suitable for adsorption and separation of trace metal ions in various alcohol ether solvents, and has high metal ion adsorption and removal efficiency.

The invention provides a lithium metal battery and a manufacturing method thereof, an energy storage system and electric equipment, which are beneficial to improving the performance of the lithium metal battery. The method comprises the following steps: providing a positive plate, a negative current collector and a diaphragm; winding or laminating the positive plate, the negative current collector and the diaphragm, and putting into a shell to form an initial battery cell; a first electrolyte is injected into the initial battery cell, the first electrolyte comprises a lithium salt, lithium nitrate and a solvent, the solvent at least contains 70 wt% or above of a short-chain ether solvent, and the number of carbon atoms of the short-chain ether solvent is smaller than or equal to 6; performing a first formation process on the initial battery cell; a second electrolyte is injected into the initial battery cell in a pulse type liquid injection mode, the second electrolyte comprises a lithium salt, 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether and a solvent, and the molar concentration of the lithium salt in the second electrolyte is larger than that of the lithium salt in the first electrolyte; and performing a second formation process on the initial battery cell to form the lithium metal battery.

This invention discloses a method for preparing polyethylene cyclohexanedicarboxylate (PECCHD) from waste PET. Specifically, it relates to a solvent composition for dissolving PET, characterized in that the solvent composition comprises a first solvent and a second solvent; the first solvent is a haloalcohol solvent or a cyclic ether solvent; the second solvent is one or more of a cyclic ether solvent, a chain ether solvent, a nitrile solvent, a ketone solvent, or a haloalkane solvent; the chain ether solvent is a chain ether solvent with 2-4 oxygen atoms; the volume ratio of the first solvent to the second solvent is 1:(1-5); the first solvent and the second solvent are not the same solvent. This method has significant advantages in terms of raw material adaptability, reaction efficiency, and industrialization potential, achieving a highly efficient conversion from low-end waste PET to high-value-added PECHD.

The invention discloses a liquid-phase indirect preparation method of high-purity lithium sulfide, and belongs to the field of fine chemical engineering. The preparation method comprises the following steps: firstly, enabling metal lithium to react with high-purity naphthalene at low temperature in an ether solvent in an anhydrous oxygen-free argon atmosphere to generate naphthyl lithium; then introducing high-purity hydrogen sulfide and a naphthyl lithium carrier to react at room temperature to generate lithium hydrosulfide; then converting at 100-150 DEG C to generate lithium sulfide; and cooling, filtering in an argon atmosphere, washing with an ether solvent, and carrying out vacuum drying to obtain high-purity finely-dispersed lithium sulfide with the purity of more than 99.99%. Compared with the prior art, the lithium sulfide obtained by the preparation method disclosed by the invention is powder which is high in purity, uniform in granularity, fine in dispersion and relatively good in flowability, is stable in process and product quality, can be suitable for industrial-scale production of high-purity lithium sulfide, and has a very good popularization and application value.

This invention relates to the field of metal surface treatment technology, and discloses a magnesium-silver alloy cleaning agent and its preparation and cleaning methods, comprising: a shear coupling step, in which dodecylamine and organophosphonic acid are mixed in an alcohol ether solvent at 60-65℃ and 2500-3000rpm under high shear to construct a high-energy acid-amine assemblage; a hysteresis locking step, in which the shear rate is maintained constant and the temperature is lowered to 35-40℃ at a rate of 1.5-2.0℃ / min to inhibit crystallization and lock it into a metastable precursor; and a dispersion stabilization step, in which a nonionic surfactant is added and dispersed to a semi-transparent state. This invention utilizes the rheological antagonistic mechanism of shear thinning and cooling viscosity increase to construct a metastable system with synchronous transport characteristics, eliminates the kinetic lag caused by preferential solvent wetting, realizes zero-time-difference synchronous adsorption of corrosion inhibitor and solvent on the magnesium-silver interface, and improves the storage stability of the cleaning agent.

The present application relates to an electrolyte composition for a lithium secondary battery and a lithium secondary battery comprising the same, the electrolyte composition comprising a lithium salt and an organic solvent. The organic solvent includes a first ether solvent (R-O-R ') having a fluorinated alkyl group, and a second ether solvent. The first ether solvent may be 5-ethoxy-1, 1, 2, 2, 3, 3, 4, 4-octafluoropentane, 1, 1, 2, 2, 3, 3, 4, 4-octafluoro-5-methoxypentane, or a mixture thereof, and the second ether solvent may be selected from the group consisting of dimethoxyethane, diethyl ether, and similar ethers. The lithium salt includes a compound such as LiTFSI, LiFSI, or LiPF6. The first ether solvent accounts for 30% to 90% by volume of the electrolyte, wherein the concentration of the lithium salt ranges from 0.1 M to 3.0 M. The electrolyte composition enhances battery stability and makes it suitable for use in lithium secondary batteries and lithium metal secondary batteries.

The invention relates to a technical scheme for preventing metal corrosion caused by a cationic polymerization initiator containing fluorine atoms. A cationic polymerization initiator composition which contains a fluorine atom-containing cationic polymerization initiator (A) and a hydrophilic ether solvent (B) that does not have an acetal structure or an active hydroxyl group, and wherein the content of the hydrophilic ether solvent (B) is 2.5 mass% or more with respect to the total mass of the cationic polymerization initiator composition.

The application belongs to the technical field of secondary batteries, and more particularly relates to a low-temperature microemulsion electrolyte, a preparation method and application thereof. The low-temperature microemulsion electrolyte comprises an electrolyte salt, a symmetrical cyclic ether solvent, a highly chlorinated solvent insoluble in the symmetrical cyclic ether solvent, and a chlorinated ether solvent for dispersing the highly chlorinated solvent in the symmetrical cyclic ether solvent in the form of micelles. Through synergistic effect of the components, an electrolyte system with high ion conductivity, electrode interface stability and wide temperature range adaptability is constructed, effectively solving the core problems of kinetic sluggishness, poor interface stability and short cycle life of the secondary battery in an ultra-low temperature environment. The electrolyte remains liquid at -70 DEG C, and exhibits excellent cycle stability in a wide temperature range of -40 DEG C to 25 DEG C, giving the battery excellent wide temperature range adaptability, breaking the low-temperature performance bottleneck of the secondary battery, and having a broad application prospect.

The application discloses a hole transport layer precursor solution, a battery component and a preparation method thereof, a perovskite solar cell and an electric device, and belongs to the technical field of solar cells. The hole transport layer precursor solution comprises a self-assembled monolayer material and a composite solvent; the composite solvent comprises a phosphate ester solvent, an alcohol ether solvent, an alcohol solvent and a terpineol; the boiling point of the phosphate ester solvent is 190 DEG C-240 DEG C; the boiling point of the alcohol ether solvent is 210 DEG C-250 DEG C; and the boiling point of the alcohol solvent is 70 DEG C-90 DEG C. The hole transport layer precursor solution has improved stability and storability, improves the flexibility of a production process of a perovskite component prepared by the hole transport layer precursor solution, improves the batch stability and efficiency of the perovskite component, and meets the demand of large-area processing.

The application discloses a high-efficiency paint-removing liquid, a preparation method thereof and a wet wipe, wherein the high-efficiency paint-removing liquid comprises, in terms of mass fractions, an alcohol ether solvent, N,N-dimethyl-9-decenamide, an emulsifier, a penetrating agent, a humectant, limonene and a preservative; the alcohol ether solvent is used to improve the polarity of the whole system, can soften and swell the paint film well, and reduce the adhesion of the paint film to a base material; the N,N-dimethyl-9-decenamide is used as a main surface-active paint remover, and the penetrating property of the N,N-dimethyl-9-decenamide can make the paint molecular chain break, so that the paint molecular structure is decomposed; the alcohol ether solvent and the N,N-dimethyl-9-decenamide can cooperate to make the paint layer easy to peel off; the penetrating agent is further used to enhance the emulsification and dispersion of the paint, help the softened and decomposed paint particles stably disperse in the solution, prevent the paint particles from being redeposited, and facilitate subsequent cleaning and removal; and the limonene is used as a complexing agent and cooperates with other components to realize the high-efficiency and thorough paint-removing effect.

The invention provides a full-matte black cathode electrophoretic coating and a preparation method thereof, and belongs to the field of cathode electrophoretic paints.The preparation method comprises the steps that epoxy resin, bisphenol A, polyester resin and a carboxyl compound are mixed, a benzylamine catalyst, an ether solvent auxiliary and a plasticizer are added, then an amine compound is added for an amination reaction, and the full-matte black cathode electrophoretic coating is obtained. Carrying out first emulsification treatment to obtain epoxy emulsion; carrying out copolymerization reaction on an acrylic monomer and styrene under the action of an initiator to obtain acrylic resin, and carrying out second emulsification treatment to obtain an acrylic resin emulsion; uniformly mixing and dispersing the grinding resin with deionized water, a solvent, a dispersing agent, an auxiliary agent, pigment carbon black, filler, aluminum triphosphate and organic acid, and grinding to obtain black slurry; and uniformly mixing the epoxy emulsion, the acrylic resin emulsion, the black slurry and water, and curing to obtain the full-matte black cathode electrophoretic coating. The electrophoretic coating disclosed by the invention can realize a stable matte effect without adding matting powder, and is excellent in corrosion resistance and aging resistance.