12results about How to "Weak corrosive" patented technology

The invention discloses alkaline stripping liquid for a silicon-based surface composite film and a stripping method of the alkaline stripping liquid. The alkaline stripping liquid is prepared from the following raw materials in percentage by mass: 12 to 17 percent of alkaline substance, 0.08 to 0.15 percent of oxidizing agent, 0.02 to 0.1 percent of composite complexing agent, 0.01 to 0.05 percent of interfacial agent and the balance of water, wherein the composite complexing agent is composed of an aluminum complexing agent and a molybdenum complexing agent according to the mass ratio of 1: 1. The method has the advantages of being good in stripping effect, small in silicon substrate damage, free of residues, high in universality, easy and convenient to operate and the like, and can be widely applied to the field of electronic chemicals, the technical field of semiconductors and the technical field of film stripping.

The invention relates to the technical field of electrochemical synthesis, in particular to an electrochemical preparation method of dimethyl sulfoxide, which comprises the following steps: uniformly mixing a solvent, dimethyl sulfide, water and electrolyte to obtain an electrolysis system, and carrying out electrolytic reaction on the obtained electrolysis system to obtain dimethyl sulfoxide. According to the electrochemical preparation method of the dimethyl sulfoxide, the dimethyl sulfide is taken as a raw material, and the dimethyl sulfoxide is obtained in one step with high Faraday efficiency. Compared with a traditional dimethyl sulfoxide synthesis method, the method has the advantages of small pollution, high atom utilization rate and weak corrosion to devices, and meets the requirements of green and safe production. According to the electrochemical preparation method of the dimethyl sulfoxide, an additional oxidant is not needed, and the only by-product is hydrogen, so that the requirement of green synthesis is met. And moreover, the Faraday efficiency of the reaction is high, and the method has a better industrial application prospect.

The invention discloses an electrochemical preparation method of tris (1, 1, 1, 3, 3, 3-hexafluoro-2-propyl) phosphite, and belongs to the technical field of electrolysis processes for producing compounds. The method comprises the following steps: mixing white phosphorus, hexafluoroisopropanol, an activation additive, an organic alkali, an electrolyte and an organic solvent to form an electrolytic reaction solution; the electrolytic reaction solution is electrolyzed under the action of direct current, white phosphorus is oxidized at an anode and then subjected to nucleophilic attack by hexafluoroisopropanol to generate tri (1, 1, 1, 3, 3, 3-hexafluoro-2-propyl) phosphite, and hydrogen atoms are reduced at a cathode to form hydrogen. The method has the advantages of simplicity, convenience, rapidness, high safety, few byproducts, high utilization value and low cost; the method is high in atom utilization rate and weak in corrosion to devices, meets the requirements of green and safe production, and has a good industrial application prospect.

The invention discloses a method for electrochemical synthesis of an organophosphorus pesticide, and belongs to the technical field of electrolysis processes for producing compounds. The method comprises the following steps: mixing white phosphorus with an alcohol compound, a sulfhydryl compound, an additive, an electrolyte and an organic solvent in an inert atmosphere to form an electrolytic reaction solution; and electrolyzing the electrolytic reaction solution under direct current, and collecting to obtain the organophosphorus pesticide. The method has the advantages of low cost and strong reaction selectivity, and overcomes the technical problem of low yield of a target product caused by a competitive reaction of sulfydryl and hydroxyl; the method is high in atom utilization rate, small in pollution and weak in corrosion to devices, meets the requirements of green and safe production, and has a good industrial application prospect.

The invention relates to the technical field of photovoltaic electronic paste, in particular to the field of IPC H01B1 / 22, and more particularly relates to glass powder for N-type TOPCon battery front face fine grid paste and a preparation method and application of the glass powder. The glass powder comprises the following components: glass powder A and glass powder B, wherein the glass powder A comprises PbO, SiO2, Bi2O3, B2O3, Ag2O, ZnO, Al2O3 and CaO; and the glass powder B is prepared from PbO, SiO2, B2O3, ZnO and BaCO3. The N-type solar cell front fine grid slurry prepared from the glass powder provided by the invention ensures that acetic acid attenuation is within a qualified range, and meanwhile, the photoelectric conversion efficiency of the cell is greatly improved.

The invention provides an extinction liquid for a lens cone, an extinction lens cone and a preparation method and application of the extinction liquid, and belongs to the technical field of optics, the extinction liquid comprises water, an accelerant, a dispersing agent and an affinity agent.The four components are reasonably matched, so that the obtained extinction liquid has an excellent extinction effect on the inner surface of the lens cone, and the extinction effect is good. The extinction liquid can effectively avoid the problem that the lens is interfered by light reflected by the inner surface of the lens cone due to the fact that the inner surface of the lens cone of the camera has a mirror surface effect, further effectively improves the imaging quality of the lens, is relatively weak in corrosion, does not affect the appearance of the lens cone, and is environment-friendly and non-toxic at the same time.

The present invention provides a method for recycling lithium in waste lithium iron phosphate batteries by using a low eutectic solvent. The waste lithium iron phosphate batteries are completely discharged to obtain a battery positive electrode sheet, and the battery positive electrode sheet is heated under nitrogen to obtain lithium iron phosphate powder; a carboxylic acid compound containing both hydroxyl and carboxyl groups is used as a hydrogen bond donor, and an amino acid is used as a hydrogen bond acceptor, and mixed in deionized water to obtain a low eutectic solvent; the lithium iron phosphate powder is placed in the low eutectic solvent to leach lithium, and a lithium ion solution is obtained after solid-liquid separation, thereby completing the recovery of lithium in waste lithium iron phosphate batteries. The present invention utilizes the hydrogen bond network and strong electrostatic effect of carboxylic acid compounds containing hydroxyl and carboxyl groups and amino acids, and the two synergistically improve the acidity of the leaching environment, forming a low eutectic solvent with good fluidity, high lithium leaching rate, and short reaction time. The present invention realizes a green and non-toxic leaching process and maximizes the recovery value of waste lithium iron phosphate batteries, and has industrial application value.

The application provides a polyaniline-zinc ion battery with continuous replacement of electrolyte, which comprises a first liquid tank, an electric pile and a second liquid tank which are in communication with each other, the first liquid tank and the second liquid tank respectively store high-concentration and low-concentration zinc salt aqueous solutions, the electric pile comprises a polyaniline active layer, a first porous separator and a zinc layer which are adjacent in sequence, the polyaniline active layer is close to the first liquid tank, and the zinc layer is close to the second liquid tank. The polyaniline-zinc ion battery does not need an ion exchange membrane, and the electrolyte in the electric pile can be continuously replaced during charging and discharging, so that the concentration difference polarization is eliminated, the chemical equilibrium of the electrochemical reaction is promoted to move in a favorable direction, the charging and discharging voltage difference of the battery is reduced, the energy efficiency is improved, and the service life is longer.

The invention relates to a low-cost, resource-saving, easy-to-implement and fault-tolerant method which is as safe as possible, by means of which durable, robust, chemically and mechanically stable heat exchanger elements with advantageous thermohydraulic and magnetic properties can be produced. According to the invention, the method comprises the following steps:-providing a magnetocaloric substrate (10) having a plurality of flow-through channels (12) or holes, preferably forming a continuous channel (12); immersing the substrate (10) in the temperature-controlled aqueous reaction solution (6), resulting in autocatalytic chemical deposition of the metal coating (40) on the surface of the substrate (10).

The present application discloses an optical material stripper, wherein the components and mass percentage ratios of the optical material stripper are: 20-25% of an alcohol amine compound, 10-15% of a stripping aid, and the balance is an organic solvent; the stripping aid is an amide solvent; the organic solvent is selected from two or more of N-methylpyrrolidone, piperidine or diethylene glycol ether compounds. The present application has good stability, good stripping effects on various types of photoresists used in the manufacturing process of liquid crystal display devices, fast stripping speed, and extremely weak corrosion to metals, which can effectively improve the manufacturing efficiency of liquid crystal display devices.

The invention relates to the field of flue gas purification product resource utilization and coal rock gas yield increase and injection increase, in particular to an alkaline desulfurization and denitrification agent and application thereof in coupling of a flue gas resource desulfurization and denitrification process and coal rock gas acidification yield increase and injection increase. The invention provides an alkaline desulfurization and denitrification agent, the alkaline desulfurization and denitrification agent contains camellia saponin and a crown ether ring structure, sulfuric acid, nitric acid and fluoboric acid mixed salt of the alkaline desulfurization and denitrification agent is generated after desulfurization and denitrification, the mixed salt is used for coal rock gas acidification, flue gas desulfurization and denitrification waste liquid can be recycled, and the desulfurization and denitrification cost can be recovered; in addition, a bis-imidazoline alkaline desulfurization and denitrification agent containing crown ether and camellia saponin is combined with plasma irradiation oxidation to perform desulfurization and denitrification on the flue gas, and the desulfurization and denitrification waste liquid is used for reservoir transformation, so that environmental pollution can be better treated, one agent can be used for multiple purposes, the acidification cost of the carbonate reservoir is reduced, and slow acidification and diverted acidification are realized at the same time.

The invention relates to the field of polishing solutions and preparation methods thereof, in particular to an aluminum oxidation polishing solution and a preparation method thereof, the aluminum oxidation polishing solution comprises the following components: acidic chemical substances, polishing particles, an active agent, a corrosion inhibitor and deionized water; the method comprises the following steps: 1, preparing an acidic solution; 2, polishing particles are added; step 3, adding an active agent and a slow-release agent; step 4, sieving the polishing solution; 5, sampling and detecting; the acid chemical substances in the polishing solution comprise mild citric acid and diluted hydrofluoric acid, compared with traditional strong-acid and strong-alkali substances, the corrosion or irritation is weak, during use, the harm to operators and the surrounding environment is small, the effectiveness of the polishing particles is kept, and meanwhile, the polishing effect of the polishing particles is greatly improved. The problem that large particles cause great damage to the surface of an object and are easy to generate scratches during polishing can be avoided; and the active agent and the slow-release agent are both made of environment-friendly materials, so that the degradability is good, and the safety performance is greatly guaranteed during use.