148 results about "Zinc compounds" patented technology

The invention discloses a vulcanization accelerator based on modified lignin zinc salt and its preparation method and application. The modified lignin zinc salt vulcanization accelerator is prepared by the following method: reacting aminated lignin with carbon disulfide, adding a zinc-containing compound for flocculation, and the resulting precipitate is a modified lignin zinc salt vulcanization accelerator. The vulcanization accelerator of the invention can shield the hydroxyl groups and other polar groups on the surface of lignin, effectively improving the dispersibility of lignin in rubber. At the same time, since lignin is a three-dimensional network structure, zinc is loaded on its network structure, and the dispersibility of zinc is also improved, avoiding the agglomeration of zinc, and can reduce the use of zinc and reduce zinc pollution. At the same time, it can cooperate with other vulcanization aids to significantly accelerate the vulcanization speed, improve the vulcanization efficiency, reduce the unit consumption, and can improve the crosslinking density, thereby improving the tensile strength and anti-oxidation effect of the rubber material.

The invention relates to the technical field of domestic ceramics, in particular to a high-strength and high-gloss domestic ceramic and a preparation method thereof, and the high-strength and high-gloss domestic ceramic comprises the following raw materials in parts by weight: 35-45 parts of mullite, 15-20 parts of spodumene, 10-15 parts of quartz, 8-12 parts of a modifier doped with barium carbonate, 5-8 parts of a boric oxide additive and 7-11 parts of a yttrium-zinc reconditioning agent. According to the domestic ceramic, mullite, spodumene and quartz are used as matrixes, an added yttrium-zinc compound regulator is used as an antibacterial functional agent, nano-zinc oxide is blended into cobalt nitrate and yttrium nitrate solutions, sintering improvement is performed, and the antibacterial stability of the product is enhanced and optimized through compounding of yttrium, zinc and cobalt; meanwhile, the added modifier doped with barium carbonate and the boron oxide additive are mutually blended and coordinated, so that the antibacterial property, the glossiness and the strength of the obtained domestic ceramic are improved in a balanced and coordinated manner, and the product is remarkable in cold and heat resistance and temperature-resistant stability effect.

The invention provides a phosphogypsum-based composite low-temperature heat storage material based on lattice defects and a preparation method of the phosphogypsum-based composite low-temperature heat storage material. The phosphogypsum-based composite low-temperature heat storage material comprises a hydratable calcium sulfate material, a zinc-containing compound and a heat-conducting framework material, wherein the hydratable calcium sulfate material comprises one or more of anhydrous phosphogypsum and semi-hydrated phosphogypsum; the heat-conducting framework material comprises any one of expanded graphite, graphene, carbon nanotubes, boron nitride or silicon carbide. The material prepared by the invention has low phase change temperature, high heat storage density, high heat conductivity and excellent cycle stability, and overcomes the key technical bottleneck of the traditional hydrated salt and ardealite-based heat storage material at one stroke.

The invention discloses a surface protective film and a preparation method thereof, and belongs to the technical field of protective films. The surface protection film comprises a surface layer, a core layer and a bonding layer which are arranged in sequence, the surface layer comprises first polypropylene matrix resin, an organic ultraviolet absorbent and an inorganic ultraviolet screening agent; the core layer comprises second polypropylene matrix resin, polyaryletherketone nanofibers and flaky mica powder of which the surface is coated with cerium oxide; the bonding layer comprises a thermoplastic SEBS elastomer, hydrogenated bonding resin, an organic zinc compound, an ultraviolet light stabilizer and a plasticizer containing an epoxy group. The surface protection film has excellent ultraviolet aging resistance and high temperature resistance, the adhesive force can still be kept within a certain range under the conditions of ultraviolet radiation and high temperature, the surface protection film can be easily unwound under the condition of high temperature, and no residual adhesive is separated out.

Provided are a coating composition including: (A) a hydroxy group-containing resin; (B) a polyisocyanate compound; (C) an organometallic catalyst formed of a zinc compound and an amidine compound; and (D) a phosphate group-containing compound, and a coating film forming method including: coating a top of a material to be coated with the above-mentioned coating composition to form a coating film; and then heating the coating film to cure the coating film.

The present invention relates to a process for recovering zinc and iron products from zinc-containing waste materials obtained from the zinc or steel industry, or both, by first treating the waste material(s) with strong acid, to convert any zinc ferrites into leachable compounds, and then leaching the acid-treated material, neutralizing the acid of the leach solution, recovering zinc from the neutralized ferrous iron-containing solution, recovering iron from the thus obtained solution, and circulating at least a fraction of the raffinate solution obtained from the iron recovery back to the leaching step.

The utility model provides a positive pressure ejector for compounding calcium zinc compound stabilizer, which comprises a conduction pipe, a first flange plate, a second flange plate, a feed pipe, a horn mouth and a scattering mechanism, the first flange plate is fixed at one end of the conduction pipe, and the first flange plate is fixed with the output end of an external fan; a second flange plate is fixed at the other end of the conduction pipe; the second flange plate is fixed with a feeding hole of calcium-zinc composite stabilizer processing equipment; a feeding pipe is fixed to the upper side face of the middle of the conduction pipe, a horn mouth is fixed to the other end of the feeding pipe, and a scattering mechanism is fixed to the interior of the feeding pipe. Due to the arrangement of the conduction pipe and the scattering mechanism, calcium-zinc composite stabilizer ingredients can be cut and scattered under the flowing action of gas output by an external fan during use, so that the calcium-zinc composite stabilizer ingredients meet the processing requirements, the quality of produced calcium-zinc composite stabilizers is improved, and in addition, the production efficiency of the calcium-zinc composite stabilizers is improved. Ingredients of the calcium-zinc composite stabilizer can be prevented from flowing back into an external fan.

The invention relates to a method for producing polyesters in polycondensation reactions catalyzed by aluminum titanate compounds, barium titanate compounds, calcium titanate compounds, zinc titanate compounds or mixtures of these titanate compounds. The invention also relates to a composition comprising an aluminum titanate compound, a barium titanate compound, a calcium titanate compound, a zinc titanate compound or a mixture of these titanate compounds as a catalyst for the production of polyesters in polycondensation reactions. Furthermore, the invention relates to the use of an aluminum titanate compound, a barium titanate compound, a calcium titanate compound, a zinc titanate compound or a mixture of these titanate compounds as a heterogeneous polycondensation catalyst. The aluminum titanate compound, the barium titanate compound, the calcium titanate compound, the zinc titanate compound or a mixture of these titanate compounds is a non-amorphous mixed oxide of aluminum oxide (and / or barium oxide, and / or calcium oxide, and / or zinc oxide) and titanium oxide. These titanate compounds have been found to be excellent heterogeneous catalysts in polycondensation reactions for the production of polyesters, such as polyethylene terephthalate.

The application relates to a preparation process of synthesizing hybrid zinc aluminate by using solid waste sodium tetrachloroaluminate, and belongs to the technical field of chemical dangerous waste treatment, and comprises the following synthesis steps: S1, zinc compounds are added in water, and the zinc compounds are completely dissolved or uniformly dispersed; S2, solid waste sodium tetrachloroaluminate is added, and the solid waste sodium tetrachloroaluminate is completely dissolved and reacted by continuing to stir; S3, an oxidizing agent is added, and the reaction is continued by keeping warm and stirring, then filtration is carried out, and the phosphorus content in the filtrate is detected; S4, after the phosphorus content is qualified, sodium hydroxide solution is added into the filtrate, the pH value is controlled, and white zinc aluminate precursor precipitate is generated; S5, the white zinc aluminate precursor precipitate is transferred into a high-pressure reaction kettle to carry out hydrothermal reaction, and hybrid zinc aluminate liquid is generated; S6, negative pressure suction filtration is carried out, the obtained filter solid is washed by using deionized water, the filter solid is subjected to spray drying, and solid hybrid zinc aluminate is obtained. The application fully utilizes aluminum resources in the solid waste sodium tetrachloroaluminate, and total phosphorus impurities in the solid waste sodium tetrachloroaluminate are also utilized to generate effective components, so that waste is turned into treasure.

The invention relates to a method for separating rare earth elements and fluorine in rare earth fluoride slag. The method comprises the following steps: mixing the rare earth fluoride slag with a zinc compound, and roasting at normal pressure; and then carrying out reduced-pressure roasting, collecting a zinc fluoride condensate, and obtaining roasting slag at the same time. According to the method disclosed by the invention, the rare earth elements and fluorine in the rare earth fluoride slag can be separated by using cheap raw materials and simple equipment, so that the method is efficient and low in cost.

The invention discloses an environment-friendly superfine solder wire and a preparation method thereof, belongs to the technical field of solder wires, and aims to solve the technical problems of insufficient performance and size limitation of the solder wire in the prior art. The environment-friendly superfine solder wire comprises a flux core and an outer film layer, wherein the outer film layer covers the exterior of the flux core; the flux core is composed of a third element alloy and a soldering flux; the third element alloy comprises the following components: tin Sn, bismuth Bi and an element alloy; the element alloy components comprise gallium Ga, indium In, cobalt Co and nickel Ni; the scaling powder comprises a carrier, an activating agent, a surface active agent, a thixotropic agent and a corrosion inhibitor. And the outer film layer is prepared by compounding and blending a zinc compound and phenolic resin according to a compounding ratio of 2: 1 to 1: 1. The environment-friendly superfine solder wire has the advantages of being low in melting point, good in wettability, excellent in crack propagation resistance and corrosion resistance and the like, can meet the requirement for narrow-interval welding of a microcomputer, and provides a high-reliability interconnection material for welding for electronic products.

This invention provides a process for producing supported zinc dimolybdate hydroxide / silicon dioxide complexes, comprising the steps of reacting a zinc compound (such as zinc oxide) with molybdenum trioxide in an aqueous system to form a reaction mixture and contacting the reaction mixture with silicon dioxide to form the supported zinc dimolybdate hydroxide / silicon dioxide complex. The resulting supported zinc dimolybdate hydroxide / silicon dioxide complexes contain silicon dioxide and zinc dimolybdate hydroxide in an amount ranging from 3 to 20 wt.% zinc, and generally, at least 80 wt.% of the zinc dimolybdate hydroxide is present in the form of Zn3Mo2O8(OH)2. These supported zinc dimolybdate hydroxide / silicon dioxide complexes are suitable for polymer compositions, such as PVC-based and epoxy-based formulations.

The invention provides a zinc tannate coated feed additive as well as a preparation method and application thereof, and belongs to the technical field of livestock feed breeding. The preparation method comprises the following steps: crushing a tannic acid-containing plant raw material, uniformly mixing the crushed tannic acid-containing plant raw material with a zinc-containing compound to obtain a plant-zinc-containing compound mixture, adding the plant-zinc-containing compound mixture into a double-screw extruder, mixing, shearing and compressing to obtain puffed plant zinc tannate, crushing the puffed plant zinc tannate, and performing extrusion molding to obtain the plant zinc tannate. Fluidizing and granulating, spraying lac coating liquid, and drying to obtain the zinc tannate coated feed additive. The plant containing tannic acid is used as a raw material, the tedious process of extracting tannic acid is omitted, the coordination reaction of tannic acid and zinc oxide in the plant is accelerated by utilizing a twin-screw extrusion process, targeted release of zinc tannate is realized by adding the shellac coating liquid, the bioavailability is improved, the whole preparation process is environment-friendly, and the preparation method is suitable for industrial production. The method is suitable for large-scale production and commercial utilization.

The present invention provides a catalyst for alcohol transesterification reaction and its application, as well as a method for synthesizing asymmetric dialkyl carbonate, and relates to the technical field of dialkyl carbonate synthesis. The catalyst for alcohol transesterification reaction of the present invention comprises a metal zinc compound and an auxiliary agent; the auxiliary agent is an organic amine strong base. The catalyst provided by the present invention can not only activate the ester carbonyl group, but also activate the alcohol hydroxyl group, thereby enhancing the nucleophilic attack ability of the alcohol raw material and making the ester carbonyl group more efficient in receiving electrophiles. The use of the catalyst of the present invention in alcohol transesterification reaction improves the reaction efficiency and solves the problem that the technical route for directly preparing asymmetric dialkyl carbonate by reacting two different monohydric alcohols with carbon dioxide is subject to thermodynamic limitations and extremely low efficiency.

The invention discloses a lignin zinc xanthate vulcanization accelerator and a preparation method and application thereof. The preparation method of the lignin zinc xanthate vulcanization accelerator comprises: reacting hydroxymethylated lignin with carbon disulfide, and then adding a zinc-containing compound for flocculation, and the resulting precipitate is a lignin zinc xanthate vulcanization accelerator. The vulcanization accelerator of the present invention can shield the hydroxyl groups and other polar groups on the surface of lignin, effectively improving the dispersibility of lignin in rubber. At the same time, since lignin is a three-dimensional network structure, zinc is loaded on its network structure, and the dispersibility of zinc is also improved, avoiding the agglomeration of zinc, and can reduce the use of zinc and reduce zinc pollution. At the same time, it can cooperate with other vulcanization aids to significantly accelerate the vulcanization speed, improve the vulcanization efficiency, reduce the unit consumption, and can improve the crosslinking density, thereby improving the tensile strength of the rubber material.

A negative electrode for a zinc battery, comprising: a non-porous current collector; and a negative electrode mixture layer held on the current collector and containing at least one of zinc, a zinc alloy, and a zinc-containing compound. The negative electrode has a current collector exposed portion in which the negative electrode mixture layer is not disposed at a portion located on the outermost peripheral surface when the negative electrode is wound.

The present invention provides a negative electrode active material, a zinc ion battery and an electronic device. The chemical formula of the negative electrode active material of the present invention is A x B y The negative electrode active material is a layered compound. Compared with the existing zinc metal negative electrode, the negative electrode active material of the present application is used as the negative electrode. It has better cycle stability and will not cause zinc dendrites, corrosion, passivation and other problems, thereby improving the cycle performance of the battery. The zinc ion battery of the present invention uses the zinc-containing compound as the positive electrode and the layered compound as the negative electrode, and is used for aqueous zinc ion batteries that do not contain zinc metal, thereby broadening the application field of the material. The zinc ion battery of the present invention has the characteristics of safety, low cost, simple synthesis, long cycle life, no zinc dendrites, etc., and has good commercial prospects.

The application discloses a method for recovering zinc and lead metals from lead-rich slag generated in a zinc smelting process, which comprises low-temperature acid leaching, magnetic separation, oxidation heap leaching, stirring leaching and the like processes, so that the lead-rich slag is subjected to low-temperature acid leaching and magnetic separation first, zinc compounds which are easily soluble are leached out sufficiently, and the content of iron ions entering the liquid phase is effectively reduced, thereby reducing the interference of iron ions in the zinc liquid, then the processes of oxidation heap leaching and stirring leaching are combined, and zinc ferrite and zinc sulfide minerals which are difficult to be acid-dissolved can be further dissolved, the zinc-containing substances basically enter the liquid phase, the target of separating lead and zinc is achieved, and finally, combined with dilute hydrochloric acid washing, part of calcium and silicon compounds can be dissolved, so that the lead grade in the final slag is improved, and comprehensive utilization is realized.

The invention discloses manganese zinc ferrite granulation powder, manganese zinc ferrite and a preparation method and application thereof, and belongs to the field of magnetic materials. The granulation powder comprises a main material and an auxiliary material, the main material comprises 52-55 mol% of an iron compound, 19-22 mol% of a zinc compound and the balance of a manganese compound in terms of Fe2O3, the particle size of the auxiliary material is within 100 nm, the auxiliary material comprises 200-1000 ppm of CaCO3 in the total weight of the main material, 500-2000 ppm of Co3O4 in the total weight of the main material, 10-20 ppm of Nb2O5 in the total weight of the main material, and 10-20 ppm of V2O5 in the total weight of the main material. Nb2O5 accounts for 100 ppm to 300 ppm of the total weight of the main materials, and V2O5 accounts for 100 ppm to 500 ppm of the total weight of the main materials. The manganese-zinc ferrite is obtained by molding and sintering the granulation powder, and D10, D50 and D90 of crystal grains in a magnetic core of the manganese-zinc ferrite meet the condition that (D90-D10) / D50 is less than or equal to 1.1. The initial magnetic conductivity of the manganese-zinc ferrite is maintained at 5000 or above, the magnetic conductivity at a frequency point of 1 MHz is maintained at 3000 or above, and the manganese-zinc ferrite also has a relatively high impedance characteristic.

The present invention provides a deodorant which is highly safe, easy to use in ordinary households, and has a sufficient deodorizing effect on various odors. The deodorant of the present invention is a solution formed by adding amino acids such as glycine, alanine, phenylalanine, sarcosine, threonine, arginine, and glutamic acid; zinc compounds such as zinc carbonate and zinc oxide; and iodine compounds such as iodine pentoxide, iodic acid, periodic acid, iodous acid, hypoiodous acid, iodates, periodates, iodites, and hypoiodites to an aqueous solvent such as water, and mixing them.

This negative electrode for a zinc battery comprises a nonporous current collector and a negative electrode mixture layer which is held by the current collector and contains at least one of zinc, a zinc alloy, and a zinc-containing compound. The negative electrode has a current collector-exposed section in which the negative electrode mixture layer is not disposed, in a portion located at the outermost circumferential surface when wound.

The invention relates to a method for synthesizing an epoxy resin material by recycling nylon acid, which comprises the following steps of: fully mixing nylon acid waste liquid, an epoxy compound and an additive, heating and curing or heating, extruding and molding, and cooling to obtain the epoxy resin material. The additive comprises one or more of primary amine, secondary amine, tertiary amine, an ammonium salt compound, nitrogen heterocyclic organic alkali, a phosphine compound, a zinc compound and a tin compound, and the mass ratio of the nylon acid waste liquid to the epoxy compound to the additive is (0.1-5): 1: (0.01-0.2). The high-performance epoxy resin material is directly synthesized by taking the nylon acid waste liquid as a raw material without separation and purification, and products with different performance expressions can be obtained by adjusting the use amount of the nylon acid. The preparation method disclosed by the invention is simple, easy to operate, efficient in preparation, easily available in raw materials and low in production technical requirement and cost, the synthesized epoxy resin material has excellent repeated processing performance, and a new direction is provided for resource utilization of the nylon acid waste liquid.

A method of producing a hot press-formed product includes subjecting an Al-plated steel sheet having a zinc compound layer or a metallic zinc layer, as an outermost layer, provided on an Al plating layer to hot press forming using a die. The die includes a hard layer having a skewness (Rsk), as measured in a direction from the outside of a die hole toward the inside of the die hole, of 1.3 or less and a hardness Hv_Die of HV 2,000 or more, over the entirety of a region of a steel sheet contact surface that is adjacent to a die shoulder portion. The steel sheet contact surface is a surface located outside of the die hole and configured to contact the Al-plated steel sheet that is to be subjected to the hot press forming.

The invention discloses electroplating liquid containing a PEGDA additive, a copper-zinc compound zinc negative electrode material and a preparation method and application of the copper-zinc compound zinc negative electrode material. According to the electroplating solution, a solvent is water, and the electroplating solution comprises ZnSO4, Na2SO4 and PEGDA. According to the preparation method of the copper-zinc compound zinc negative electrode material, a copper foil serving as a working electrode and a zinc plate serving as a counter electrode are placed in the electroplating solution for electroplating treatment, and the copper-zinc compound zinc negative electrode material is obtained. According to the invention, a copper foil is used as a substrate, and a PEGDA additive is added by optimizing an electrochemical galvanizing process to prepare the copper-zinc compound. The additive PEGDA (polyethylene glycol diacrylate) is introduced into the electroplating solution, so that uniform deposition of zinc ions is realized, a zinc deposition substrate can be effectively improved, dendritic crystals are inhibited, side reactions are reduced, a more compact coating with better binding force is obtained, the mechanical strength and interface stability of a negative electrode are remarkably improved, and the performance of the aqueous zinc ion battery is improved.

The present invention belongs to the technical field of water treatment, and specifically relates to a preparation method and application of an iron-zinc nano-microsphere micro-electrolysis composite material. The preparation method first prepares iron-zinc compound nano-microspheres by a solvothermal method, then obtains relatively pure nano-metal oxides after high-temperature calcination, and then mixes it with appropriate proportions of iron powder, modified activated carbon, borax, sodium-based bentonite and pore-forming agent with water, compresses and forms, and after drying, high-temperature sintering is carried out under an oxygen-free negative pressure condition to obtain the iron-zinc nano-microsphere micro-electrolysis composite material. Trace amounts of zinc oxide in the material are reduced to elemental zinc protective layers, which can effectively reduce the oxidation of iron and improve the chemical corrosion resistance of the material surface. This micro-electrolysis material has high catalytic performance and is suitable for the treatment of various industrial wastewaters such as electroplating, chemical industry, printing and dyeing, leather, and pharmaceuticals, and can significantly improve the biodegradability of the wastewater.

In one embodiment, a granule can comprise a mixture, the mixture comprising an amorphous phase material and a biocidal agent including calcium oxide, wherein a 24-hour Ca2+ leaching factor change of the granule (24-LF Change) is at least 10%, the 24-LF Change=(24-LFG710 / 24-LFG)×100%, with 24-LFG being a 24 hour Ca2+ leaching factor of the granule and 24-LFG710 being a 24 hour leaching factor of the granule after subjecting the granule to sintering for 3 hours at a temperature of 710° C. In another embodiment, the granule can comprise a 24-hour Ca2+ Leaching Factor (LFG) of not greater than 1700 ppm. The granule can be essentially free of a copper compound, a silver compound, and a zinc compound, and can be implemented in a building component with long time biocidal activity.

A film capacitor comprising a capacitor element that includes first metallized films electrically connected to a first termination and second metallized films electrically connected to a second termination, and a case within which the capacitor element is disposed, is provided. The case contains a polymer composition that includes 100 parts by weight of a polymer matrix that contains a polyarylene sulfide, from about 30 to about 90 parts by weight of inorganic fibers, and a zinc (II) compound.

To provide a zinc compound or zinc-manganese oxide secondary battery using an aqueous electrolyte.SOLUTION: In order to realize a zinc compound or zinc-manganese oxide secondary battery, a mixed aqueous solution containing zinc chloride as the main component of the electrolyte and manganese chloride as the secondary component of the electrolyte is used.SELECTED DRAWING: None

The invention relates to the technical field of granulation, in particular to granulation equipment for producing a calcium-zinc composite stabilizer, which comprises an electric roller I, the shell is rotationally connected with an electric roller I; the shell is rotationally connected with an electric roller II; a crusher is installed on the shell and located below the first electric roller and the second electric roller. A movable plate is connected to each flow guide plate in a sliding mode, and the movable plates are connected with the shell in a sliding mode; a plurality of electric push rods are fixedly connected to each movable plate, and the telescopic ends of the electric push rods are fixedly connected with the corresponding movable plates; the movable plate is used for stirring powder to flow and also used for driving the first round rod to do up-down reciprocating motion, so that the first round rod pokes and removes small protruding blocks remaining in the groove, the problem that granulation fails due to the fact that the small protruding blocks are left in the groove is solved, and after the poked small blocks move to the gap between the first electric roller and the second electric roller, the small protruding blocks are separated from the first electric roller and the second electric roller. And extrusion granulation operation can be carried out again, waste is avoided, and economic benefits can be improved.

The utility model provides an exhaust dust removal device for a calcium-zinc compound stabilizer capable of recovering smoke dust, which comprises an air inlet cover, a positioning frame, a fan, an air guide pipe, an electromagnetic valve, a filter box, a material taking frame, a reverse blowing frame and an exhaust pipe, the positioning frame is fixed at the upper end of the air inlet cover, the fan is fixed at the middle part of the upper side surface of the air inlet cover, and the air guide pipe is fixed at the lower end of the air inlet cover. The input end of the fan is communicated with the interior of the air inlet cover, and an air guide pipe is fixed at the output end of the fan; an electromagnetic valve is fixed at the other end of the air guide pipe, and the other end of the electromagnetic valve is fixed with the filter box; the filter box is placed on the ground, and a material taking frame is slidably mounted in the lower end of the filter box; and a back flushing frame and an exhaust pipe are fixed at the upper end of the filter box respectively. Due to the arrangement of the positioning frame, the filter box and the reverse blowing frame, the air inlet direction of the air inlet cover can be freely adjusted during use, the filtered calcium-zinc compound stabilizer can be collected, and meanwhile, the filter plate can be cleaned.