544 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 discloses a rechargeable magnesium battery composite electrolyte and a preparation method and application thereof, the electrolyte comprises an organic ether solvent, an electrolyte magnesium salt and an additive, and the additive is one or two of a sulfimide additive or a phosphate additive. By introducing the sulfimide additive into the organic ether solvent electrolyte containing the electrolyte magnesium salt, the kinetic performance of the electrolyte is remarkably improved under the mutual synergistic effect of all the components, the solvation structure of electrolyte magnesium ions is effectively regulated and controlled, the dissolution of the electrolyte magnesium salt is accelerated, the conductivity of the magnesium ions is improved, and the service life of the electrolyte is prolonged. Reversible electrochemical circulation of the magnesium symmetric battery under high current density is realized, the cycle life of the battery is prolonged, a phosphate ester additive is continuously introduced, a phosphorus-rich magnesium ion conductive interface film is formed on the surface of magnesium metal, the transmission capacity of Mg < 2 + > is enhanced, the overpotential and potential barrier of magnesium negative electrode dissolution / deposition are reduced, and the performance of the battery is improved. Therefore, the electrochemical reversibility and coulombic efficiency of the asymmetric battery are improved.

The invention discloses gold-titanium alloy nanoparticles as well as a wet chemical preparation method and application thereof. The preparation method comprises the following steps: in a water-free and oxygen-free environment, uniformly dissolving a gold salt, a titanium salt and a support carrier in an ether solvent, mixing with lithium triethylborohydride, transferring into a high-pressure reaction kettle, stirring and heating to 180-220 DEG C under the inert gas pressure of 0.5-1 MPa, and keeping the temperature for 1-4 hours; and after the mixture is cooled to the room temperature, the product solution is diluted with normal hexane, cleaning and drying are conducted, and the gold-titanium alloy nanoparticles are obtained. According to the invention, gold salt and titanium salt adsorbed on a support carrier are reduced by using a strong reducing agent under the conditions of high temperature and high pressure, and highly dispersed nanoparticles with uniform particle size are prepared; by introducing the supporting carrier, the problem that the particle size is increased due to agglomeration of alloy nanoparticles at high temperature is avoided, the catalytic performance and the anti-sintering performance of the catalyst are enhanced through strong interaction with the carrier, and the catalyst has wide application prospects in the fields of CO thermal oxidation and CO electrochemical oxidation.

The invention discloses a photoresist stripping liquid composition and application thereof, and the photoresist stripping liquid composition comprises the following components by mass: 10-40wt% of an alcohol ether solvent, 10-40wt% of a solvent, 10-40wt% of a solvent, 10-40wt% of a solvent, and 10-40wt% of a solvent. 20 wt% to 50 wt% of a polyol solvent; 0.5 wt% to 10 wt% of an alkanolamine compound; 0.02 wt%-2 wt% of a metal corrosion inhibitor; 0.01 wt% to 1 wt% of a surfactant; 0.01 wt%-1 wt% of an auxiliary additive; and the balance of water. According to the invention, the octanol / water partition coefficient of the mixed solvent of the alcohol ether solvent and the polyhydric alcohol is limited, so that the dissolving capacity of the stripping liquid to photoresist is improved, the service life of the stripping liquid is prolonged, and the stripping liquid is easy to wash and remove and less in residual quantity; in addition, the organic acid metal corrosion inhibitor and the metal inhibitor in the photoresist stripping liquid composition are matched with each other, so that the photoresist stripping liquid composition can be compatible with copper and aluminum processes, and corrosion of the photoresist stripping liquid composition to a metal layer is reduced.

The invention relates to an electrolyte and a preparation method thereof, a battery and an electronic device, the electrolyte comprises a lithium salt, a solvent and an additive, the solvent comprises a cyclic carbonate solvent, a low-viscosity solvent and a linear carbonate solvent; the low-viscosity solvent is selected from at least one of a carboxylic ester solvent and an ether solvent; wherein based on 100% of the total mass of the electrolyte, the mass percentage of the lithium salt is X%, the mass percentage of the cyclic carbonate solvent is Y%, the mass percentage of the low-viscosity solvent is Z%, and the mass percentage of the linear carbonate solvent is W%; wherein X, Y, Z and W satisfy the following conditions: 90 < = X + Y + Z + W < = 100, and Y < = Z < = W. The electrolyte disclosed by the invention has both interface stability and fast charging performance, and the battery comprising the electrolyte disclosed by the invention is excellent in high-temperature / normal-temperature high-power cycle performance and high in fast charging capacity.

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.

The invention provides a high-safety flame-retardant lithium ion battery electrolyte with a low-reactivity coordination structure, and relates to the technical field of energy storage batteries. High-stability bis (fluorosulfonyl) imide lithium salt is used as lithium salt, an ether solvent with weak solvation ability is used as an auxiliary solvent, and an additive is added. The low-reaction-activity solvent and the high-stability salt are adopted to replace high-reaction-activity components in a traditional electrolyte, the proportion of the lithium salt, the solvent and the additive is regulated and controlled to construct the high-safety flame-retardant lithium ion battery electrolyte with a low-reaction-activity coordination structure, and the thermal safety of the battery can be remarkably improved. According to the electrolyte, the self-heat-production reaction rate of an electrolyte-electrode interface and the generation of combustible gas are effectively inhibited, the thermal failure starting temperature and the triggering temperature of the battery are increased, the maximum temperature of thermal runaway is reduced, the intrinsic thermal safety of the high-energy-density lithium ion battery is greatly improved, and the electrolyte is suitable for the high-specific-energy lithium ion battery.

The invention discloses a toughened epoxy microsphere and a preparation method thereof, and the toughened epoxy microsphere is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin, 31-37.2 parts of a curing agent and 65.5-524 parts of a polyether solvent. The preparation method comprises the following steps: reacting epoxy resin with a curing agent to form a low-molecular-weight prepolymer, and dispersing the low-molecular-weight prepolymer in a polyethylene glycol (PPG) solvent with a certain molecular weight to form an epoxy / PPG binary blending system. Along with the proceeding of the curing reaction, the epoxy molecule amount is continuously increased, and finally, the epoxy molecules are precipitated from the polyethylene glycol solvent in a sphere shape. According to the preparation method disclosed by the invention, the epoxy microspheres with regular shapes can be prepared only by a simple process, and the glass transition temperature (Tg) of the epoxy microspheres is relatively high and is about 170 DEG C; the excessive curing agent endows the epoxy microspheres with certain reactivity, the epoxy microspheres can react with an epoxy matrix, the toughening and reinforcing effects are achieved, the interfacial compatibility of the microspheres and the matrix is enhanced, and therefore the mechanical property of epoxy is improved.

The invention discloses a water-based flux cleaning agent for integration, and belongs to the field of semiconductor cleaning agents. The water-based flux cleaning agent is prepared from the following raw materials in percentage by weight: 30-50% of alcohol ether solvent, 1-5% of organic amine, 3-5% of gemini imidazoline corrosion inhibitor and 40-70% of deionized water, wherein the sum of the weight percentages of the raw materials is 100%. According to the water-based flux cleaning agent, the imidazoline corrosion inhibitor is adopted, so that a remarkable cleaning effect on flux residues, soldering paste and fine particles on a semiconductor electronic device is achieved, meanwhile, the brightness of welding spots can be maintained, the surface insulation performance is good, the metal surface of an IPM module can be effectively prevented from being oxidized, and the service life of the IPM module is prolonged. The cleaning agent is especially suitable for cleaning pollutants in the welding process of semiconductor chips, chip type capacitors and circuit substrates.

The invention relates to a water-based thermal insulation coating. The invention discloses a water-based thermal insulation coating composition which comprises water-based resin, a coalescing agent and a thermal insulation agent. The water-based resin is selected from at least one of material groups consisting of acrylic resin, polyurethane resin and epoxy resin. The aqueous resin has a minimum film formation temperature of not less than 5 DEG C. The coalescing agent is selected from at least one of a material group consisting of a plasticizer, an alcohol ether solvent, an alcohol ester solvent, a mixed solvent of ethylene glycol monobutyl ether and dipropylene glycol butyl ether, and an aprotic solvent. And the heat insulation agent is hydrated silicon dioxide. Therefore, the water-based heat insulation coating has the technical effect of reducing carbon emission, can replace the traditional solvent type coating, and has a heat insulation function.

The invention discloses a photoresist stripping liquid composition as well as a preparation method and application thereof, and relates to the technical field of photoresist stripping materials. The amide solvent is added, and the Hansen solubility parameter delta of the amide solvent is controlled to be close to the range of the solubility parameter of the photoresist, so that the capacity of the photoresist stripping liquid composition for dissolving the photoresist is maximized. Meanwhile, due to the existence of the amide solvent, the alcohol ether solvent can be selected from a monohydroxy alcohol ether solvent and a dihydroxy alcohol ether solvent which are mixed for use, so that the washing effect of the photoresist stripping liquid composition is improved. By controlling the octanol / water partition coefficient of the mixed solvent formed by the monohydroxy alcohol ether solvent, the dihydroxy alcohol ether solvent and the amide solvent, the photoresist stripping liquid composition has good photoresist dissolving capacity and washing performance, the service life of the photoresist stripping liquid is prolonged, meanwhile, the photoresist after-tack phenomenon is avoided, and the photoresist stripping liquid composition is suitable for being used in the field of photoresist stripping. And the yield of the material manufacturing process 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 discloses an electrolyte and a sodium ion battery containing the electrolyte. The electrolyte comprises a sodium salt, an organic solvent and an additive, the organic solvent is an ether solvent; the additive is selected from non-sodium metal salts; the non-sodium metal salt is selected from at least one of a first additive, a second additive or a third additive; wherein the first additive is lithium metal salt; the second additive is magnesium metal salt; the third additive is aluminum metal salt. According to the electrolyte, the electrochemical window of the electrolyte can be improved, and the low-temperature capacity retention ratio and the cycle performance of the electrolyte can be improved.

The invention provides an electrolyte and a lithium battery. The electrolyte comprises a cyclic carbonate solvent and a fluoro-ether solvent, wherein the fluoroether solvent comprises at least one compound shown as a formula (I): # imgabs0 #, R2 is C4 alkylene or C4 fluoroalkylene, and the number of fluorine atoms in the C4 fluoroalkylene is 1; in the electrolyte, R1 and R3 are respectively and independently methyl or fluoromethyl, and the total number of fluorine atoms in R1 and R3 is 1-4, so that the electrolyte can improve the cycle performance of the medium-nickel high-voltage lithium battery and is beneficial to long-term stable operation of the lithium battery.

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 discloses a magnesium-lithium composite electrolyte for a rechargeable magnesium battery and a preparation method and application thereof, the electrolyte comprises an organic ether solvent, an electrolyte magnesium salt and a lithium salt additive, the concentration of the electrolyte magnesium salt in the electrolyte is 0.01-1.0 M, the concentration of the lithium salt additive in the electrolyte is 0.01-1.0 M, the concentration of the organic ether solvent in the electrolyte is 0.01-1.0 M, and the concentration of the organic ether solvent in the electrolyte is 0.01-1.0 M. And the molar ratio of the electrolyte magnesium salt to the lithium salt additive is (0.5-3): 1. The lithium salt additive is introduced into the organic ether solvent electrolyte containing the electrolyte magnesium salt, the kinetic performance of the electrolyte can be remarkably improved due to the high diffusion and migration rate of Li < + >, the solvation structure of Mg < 2 + > on a negative electrode interface can be regulated and controlled through Cl <->, the overpotential of magnesium negative electrode dissolution / deposition is reduced, the electrochemical reversibility is improved, and the performance of the electrolyte is improved. Therefore, the coulombic efficiency of the battery is improved, the cycle life of the battery is prolonged, and an electrochemical window is widened to stable 4.0 V; and the preparation method is simple in process, does not need complex pre-treatment, post-treatment and other procedures, greatly reduces the process cost, and improves the reversibility and charge-discharge stable cycle performance of the rechargeable magnesium battery.

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 invention belongs to the field of medicine preparations, and particularly relates to a local external medicine composition for treating alopecia, the medicine composition comprises at least one active component, and the medicine composition comprises the following components in percentage by weight: 1-10% w / w of minoxidil or salt thereof, 0-50% w / w of propylene glycol, 1-50% w / w of ethanol and 10-50% w / w of C3-C10 ether solvent, the total dosage of the propylene glycol and the ethanol is less than or equal to 50% w / w, and the total dosage of the propylene glycol and the ethanol is less than or equal to 50% w / w. The pharmaceutical composition at least has the following excellent characteristics: good curative effect, high drug solubility, high patient efficiency, quick response, few adverse reactions, low scalp irritation, good stability, easy use, no greasy feeling after use, good drug permeability, high bioavailability, few use times, good patient compliance and the like.

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.

To provide a one-pack moisture-curable urethane resin composition that excels in storage stability and curability as one liquid, and exhibits sufficiently high weather resistance and impact resistance after curing, and a coating material prepared using the same.SOLUTION: Disclosed is a one-pack moisture-curable urethane resin composition comprising a urethane prepolymer and oxazolidine, wherein the urethane prepolymer is synthesized from a polyisocyanate and a polyol, which comprises a polycarbonate polyol (PC) and an acrylic polyol (AC) with a hydroxyl value of 60-150 mgKOH / g. Also disclosed is a coating material comprising the one-pack moisture-curable urethane resin composition and an aromatic solvent and / or an ether-based solvent.SELECTED DRAWING: None

The invention provides a glass fiber impregnating compound pipeline cleaning agent which comprises the following components in percentage by weight: 20-60% of a main solvent, 20-60% of an auxiliary solvent, 10-30% of a solvent and the balance of water. 10-35% of an auxiliary solvent; 1-12% of an activator; 0.2 to 10% of a surfactant; 10 to 40 percent of water; wherein the main solvent is an ether solvent which has good solubility on epoxy resin and polyurethane in the impregnating compound; the auxiliary solvent is an ester solvent which has a good dissolving effect on polyunsaturated polyester and PVAc; and the cosolvent is an alkaline substance. By adopting the green water-based cleaning agent, dirt in a glass fiber impregnating compound pipeline can be quickly and thoroughly removed, and no substance harmful to human health and unfriendly to the environment is left.

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.