88 results about "Chemical combination" patented technology

The invention relates to the technical field of tread rubber, and discloses high-performance tire tread rubber based on a synergistic system and a preparation method thereof.The method comprises the following steps of first-stage mixing, second-stage mixing, third-stage mixing, final mixing and vulcanization molding. By adopting a composite vulcanization system composed of dicumyl peroxide and sulfur and cooperating with zinc methacrylate as a functional auxiliary agent, a dual synergistic cross-linked structure composed of a free radical cross-linked network and an ionic cross-linked network is formed in the vulcanization process, so that the uniformity and stability of the cross-linked network structure of the tread rubber can be effectively improved, and the service life of the tread rubber is prolonged. The reasonable regulation and control of the crosslinking density of the tread rubber in the vulcanization process are ensured, the problem that a traditional single vulcanization system cannot give consideration to the wear resistance and the dynamic heat generation performance is solved, the comprehensive mechanical property and the dynamic use performance of the tread rubber are further improved, and firm chemical combination between the reinforcing filler and rubber molecules is ensured.

A comprehensive utilization method of beneficiation-metallurgy-chemical combination for germanium-rich lignite includes the following steps: 1) germanium-rich lignite sizing and grinding, 2) catalytic pre-oxidation, 3) nitric acid leaching, and 4) recycling and enrichment of germanium solution. The high effective extraction of germanium from the germanium-rich lignite was achieved via a combination of mineral beneficiation, hydrometallurgy, and chemical processing. Meanwhile, a high yield and high degree of depolymerization humic acid product was produced as byproducts. This method could not only effectively avoid high carbon emission and organic resource waste during conventional germanium-rich lignite pyrometallurgical processing, but also could produce humic acid as quality raw materials for metallurgical and agricultural industries, which has advantages of less environmental pollution, high extraction efficiency, and low comprehensive costs.

A chemical composition for controlling odor and to a method of using the chemical composition to impart an odor control treatment to an article, more particularly to a textile material or a building or construction material. The chemical composition comprises a metal compound selected from the group consisting of a metal oxide, a metal hydroxide, and a combination thereof and a sulfo polyester. Methods of making and of using are provided.

The present application relates to the technical field of biomedical materials, and discloses a biological activity and biocompatibility surface treatment method for dentures and implants, which comprises the following steps: a) performing surface pretreatment on the base body of the denture or implant; b) applying a composite coating containing hydroxyapatite particles and biocompatible resin adhesive on the surface of the pretreated base body; c) performing low-temperature thermal curing on the composite coating to form a composite coating layer; and d) performing precision polishing on the surface of the cured composite coating layer to selectively remove part of the resin adhesive on the surface. Through mechanical locking of the base body surface and chemical combination of the interface inside the coating, a composite coating layer which is firmly combined with the base body and chemically stable is obtained; meanwhile, through low-temperature curing and surface activation treatment, the hydroxyapatite is exposed on the surface of the coating layer while the biological activity of the hydroxyapatite is retained, so that the coating layer is endowed with effective biological functions.

The application belongs to the technical field of cutting oil, and specifically provides a kind of composite cutting oil and a preparation method thereof.A kind of composite cutting oil uses coconut oil, mineral oil, poly-alpha olefin as mixed base oil, adds specific amount of rust preventive, polyethylene glycol, nano molybdenum disulfide, antioxidant, dispersant and composite additive obtained by chemical combination of carboxylated multi-walled carbon nanotube surface and thiophosphate amine salt, etc., through the synergistic effect of multiple components, the prepared cutting oil has excellent lubricity, extreme pressure and wear resistance, and is suitable for severe extreme pressure cutting environment.

The application discloses a kind of based on hydration calcium silicate and polycrystalline fiber composite board and preparation method, belong to inorganic fireproof heat insulation board technical field. Including board body, the board body is by following component weight parts constitutes: calcium source 25-45 parts, silicon source 30-55 parts, polycrystalline fiber 5-25 parts, interface modifier 0.5-3 parts, dispersing agent 0.1-1 part, foam stabilizer 0.1-0.5 parts, water 150-300 parts;The calcium source and silicon source hydrothermal reaction generate hydration calcium silicate crystal, the hydration calcium silicate crystal is mutually interwoven and forms porous matrix skeleton, the polycrystalline fiber disperses in the porous matrix skeleton, the hydration calcium silicate crystal in-situ growth on polycrystalline fiber surface, and forms chemical combination layer with polycrystalline fiber.The based on hydration calcium silicate and polycrystalline fiber composite board and preparation method of the application, the prepared board has excellent fireproof heat insulation performance, while having good mechanical toughness, impact resistance and high temperature long-term stability.

To provide an injection chemical composition that can achieve both curability in water and foaming and curability in non-water environments, even after being exposed to high temperature and high humidity environments. [Solution] An injection solution composition comprising a first agent (A) and a second agent (B), wherein the first agent (A) comprises an aqueous solution of sodium silicate (A-1), an organic polyol (A-2), and a tertiary amine catalyst (A-3), and the second agent (B) comprises an organic polyisocyanate containing a mixture of diphenylmethane diisocyanate and polymethylene polyphenyl polyisocyanate having 3 or more isocyanate functional groups (B-1), or a reaction product (B-1') of an active hydrogen group-containing compound and a mixture (B-1), at least one acid component (B-2) selected from the group consisting of phosphate monoesters and phosphate diesters, and at least one hydrolyzable component (B-3) selected from the group consisting of orthoester compounds and acetal compounds.

The present application relates to sewage treatment moss cleaning technical field, disclose a kind of sedimentation tank moss cleaning method, comprising the following steps: S1, pretreatment moss, by physical and chemical methods, moss is converted into state convenient to remove;S2, spray treatment, at temperature range is 20 ℃ to 30 ℃, using the water containing sodium hypochlorite is sprayed to moss;S3, ultraviolet irradiation, to the first moss obtained ultraviolet irradiation;S4, inhibit the growth of moss, to the second moss is post-processed to inhibit its growth;S5, clean waste, moss residues, cleaning agent and other waste generated in the cleaning process are cleaned in time, avoid the influence of residue on water quality, and prevent moss from growing again again.By physical and chemical combination mode, first, the loose moss in sedimentation tank is effectively removed, then the solution containing sodium hypochlorite is used to spray the moss, to ensure that each moss patch is evenly contacted, to achieve the ideal chemical cleaning effect.

The invention discloses an epoxy resin adhesive with high bio-based content and intrinsic flame retardance and a preparation method, and particularly relates to the technical field of epoxy resin adhesives, and the epoxy resin adhesive is prepared by mixing and curing a component A and a component B according to a mass ratio of 100: 30-100: 45. According to the invention, the flame-retardant property and the bio-based property are deeply combined from the molecular level, so that the product has a stable and lasting flame-retardant effect while the high bio-based ratio is ensured, the traditional cognition that the flame-retardant property is necessarily sacrificed for increasing the bio-based content is thoroughly changed, the synergistic problem of high bio-based property and high flame retardance is broken through, the molecular level performance fusion is realized, and the flame-retardant property of the product is improved. The material is endowed with permanent intrinsic flame retardance, the problems of migration and failure of a small-molecule flame retardant are avoided, stable chemical bonding is formed between flame-retardant components and an adhesive matrix by virtue of an intrinsic flame-retardant mechanism, the problems of migration and precipitation of a traditional additive type flame retardant are completely eradicated, and performance failure and environmental hidden dangers caused by falling of the flame retardant are avoided.

The application discloses a kerosene gel propellant and a preparation method thereof, and belongs to the technical field of propellants. The propellant provided by the application comprises the following components in mass ratio: kerosene 37wt.%-68wt.%, modified boron 30wt.%-60wt.%, and gelling agent 2wt.%-5wt.%. The modified boron is halogen alkyl silane functionalized boron obtained by chemical combination of halogen alkyl silane and boron, and the halogen alkyl silane functionalized boron comprises a -B-O-Si- framework. The stable and controllable coating layer is obtained on the surface of boron particles by modifying the boron through halogen alkyl silane functionalization, and the higher content of boron particles is stabilized in kerosene. In addition, the high active halogen free radicals can be generated in the combustion process, the ignition and combustion of boron are accelerated, and the carbon deposition effect of kerosene hydrocarbons is reduced. The propellant has higher stability, excellent ignition performance and higher combustion efficiency.

A ternary hydraulic binder composition including the mineralogical compound C4A3$ (ye'elimite) and a member selected from the group consisting of gypsum, calcium sulfate hemihydrate, anhydrite and mixtures thereof (collectively named C$Hx with x being a rational number from 0 to 2), and optionally C2S (belite), including an added content of the mineralogical compound C12A7 (dodecacalcium heptaaluminate). Moreover, it suggests a process for the manufacture thereof, a process for the manufacture of a construction chemical composition including water, and the use of the ternary composition in construction chemical compositions including knifing fillers, screeds, and repair mortars, tile adhesives, tiling grouts, plasters, base coats and sealings.

The invention discloses a modified polyester film for hot-pressing lamination of an EVA (Ethylene Vinyl Acetate) adhesive film and a preparation method of the modified polyester film, belongs to the technical field of high polymer materials, and aims to solve the problem of insufficient adhesion between a common PET (Polyethylene Terephthalate) film and the EVA adhesive film. The film is prepared from modified polyester master batches through the processes of melt extrusion, shock chilling sheet casting, two-way stretching and heat setting, and the modified polyester master batches are prepared from 80-95 parts of common polyester resin, 5-12 parts of hydroxyl-terminated hyperbranched polyester resin, 1-3 parts of polymeric aliphatic carbodiimide and 0.5-5 parts of a compound containing a vinyl acetate structure through melt blending granulation. Through the chemical bonding effect of polymerized aliphatic carbodiimide, hydroxyl-terminated hyperbranched polyester and a compound containing a vinyl acetate structure are connected into a PET main chain, the interface bonding performance is improved by means of the synergistic effect of chemical bonding and physical compatibility, and meanwhile good damp-heat aging resistance is achieved.

A system and method for eradicating pathogens disposed on a surface combines a chemical composition and the use of a UV light source. The system includes a reservoir for holding the chemical composition. A dispenser for dispensing the chemical composition in the direction of the surface is included to direct the chemical composition toward the surface. A UV light source is cooperable with at least one of the reservoir and the dispenser for irradiating the surface that the chemical composition has been applied. The UV light enhances the eradication properties of the chemical composition.

The present invention relates to a synergistic combination of a photoprotective agent and a thermal protective agent in an agrochemical composition, to a corresponding agrochemical liquid composition, and to the use of a synergistic combination of a thermal protective agent and a photoprotective agent for stabilizing an agrochemical composition comprising at least one pesticidal agent.

A powdered composition for oral application of therapeutic agents includes a base material, at least one therapeutic agent, and a crosslinker. The composition is formed as a homogenous powder. An application device is also disclosed.

The invention relates to the technical field of snow-melting pad production, in particular to a manufacturing method of a rubber snow-melting pad, which comprises the following steps: wiring and weaving, preparing a rubber sheet, laminating, vulcanizing and forming by adopting gas stripping model vulcanizing equipment, and demolding. The prepared rubber snow melting pad has high tensile strength and high tear resistance, can effectively bear repeated loads of high stress points of decks, stairs and the like, and is not easy to crack; the three-layer laminated structure is combined with an accurately controlled vulcanization process, so that firm physical and chemical combination between the heating layer and the polyurethane base material is ensured, and the heat conduction efficiency is high; when the gas demolding vulcanization equipment is used for vulcanization treatment, a plurality of forming holes communicated with the inner cavity are uniformly distributed in the bottom wall of the cavity of the lower hot mold, and the anti-skid convex points are uniformly, synchronously and upwards pushed by utilizing gas pressure, so that the uniform distribution of demolding force is realized; cracking of roots of the anti-skid convex points, material shortage and overall buckling deformation of the pad body caused by uneven distribution of ejection force are avoided, and the demolding integrity of products and the yield of finished products are improved.

The present application relates to the technical field of bridge and tunnel seamless splicing, and particularly relates to a super-tough cement seamless splicing structure and a construction method. Technical points of the present application are as follows: the super-tough cement seamless splicing structure is arranged in a road surface cushion structure, and is a seamless splicing structure composed of a base layer, a road surface cushion, a super-tough cement structure, a paving surface layer and a filling sealing strip; rough glue surface splicing is adopted, concave-convex rough surfaces and an interface agent are used, a physical-chemical combination mode is adopted to strengthen the connection, and a wedge-shaped clamping groove limiting and fixing and staggered structure are arranged; the super-tough cement splicing material comprises dry mixture, nano active powder, composite fiber, additive and water; the high-strength interface agent comprises two components of epoxy resin and curing agent. The super-tough cement seamless splicing structure provided by the present application is suitable for bridge and tunnel engineering construction, can meet the demand of long-life seamless pavement, and provides reliable guarantee for driving safety and comfort performance.

The utility model discloses electroplating wastewater multistage purification recycling equipment which comprises a support and a stirring barrel, the stirring barrel is installed in the support, a filter shell is installed at the top end of the stirring barrel, a storage box is installed on the side wall of the support, a top cover is installed at the top end of the storage box, the top cover is movably connected with the filter shell, and the filter shell is installed on the side wall of the support. And a first filter is arranged outside the bracket. According to the wastewater multi-stage purification recycling equipment, convenient multi-stage purification is realized, filtered large-particle pollutants can be conveniently scraped, swept and discharged, the convenience for cleaning the filtered pollutants is improved, the electroplating wastewater can be conveniently and fully mixed and treated by adding chemicals, the electroplating wastewater can be conveniently treated by a physical and chemical combination method, and the electroplating wastewater can be conveniently recycled. And the purification quality and efficiency of the wastewater multi-stage purification recycling equipment are improved.

The application provides a smelting slag valuable substance extraction device based on microbubble cavitation and an extraction process thereof. It relates to the technical field of solid waste treatment and comprises a base, a support frame, an extraction tank and a chemical treatment mechanism. The bottom of the support frame is fixed to the top of the base, the inner wall of the extraction tank is fixed to the inner wall of the support frame, and a top plate is sealingly installed on the top of the extraction tank through bolts. The valuable metal in the smelting slag is extracted by adopting a chemical combination pH value adjustment method. Through 'chemical characteristic precise regulation and control', the win-win of 'efficiency improvement' and 'environmental optimization' is realized. The resource utilization rate is improved, a low-cost and easy-to-promote technical path is provided for the greening of the lepidolite smelting industry, the design of the inner conical rotating cylinder is adopted, and the structure is gradually inclined from the outside to the inside. Compared with the stirring method, the sulfuric acid entering the auxiliary tank will fall on the rotating cylinder and gradually move to the middle position. In this way, local overheating can be avoided.

The application discloses a system for deep treatment of fracturing flow-back fluid by physical and chemical combination and a treatment method thereof, and aims at solving the problems of high concentration of organic pollutants and metal ions in the existing fracturing flow-back fluid and difficulty in biodegradation. The system for deep treatment of fracturing flow-back fluid by physical and chemical combination comprises, in sequence along the water flow direction, a gel breaking treatment tank, a chemical flocculation tank, a first sedimentation tank, a micro-electrolysis reaction tank, an adsorption treatment tank, a hydrolysis acidification tank, a multi-stage A / O biochemical tank and a second sedimentation tank. Ferrate is added into the gel breaking treatment tank, and a flocculant is added into the chemical flocculation tank. The micro-electrolysis reaction tank is filled with iron-carbon filler. The adsorption treatment tank is filled with a chitosan-biochar composite adsorbent. The multi-stage A / O biochemical tank is alternatively provided with an anaerobic tank and an aerobic tank. The system combines chemical flocculation, micro-electrolysis and electrostatic adsorption, so that the removal rates of COD and hardness are both above 90%.

The invention discloses a carbon sequestration area determination method and device, a storage medium and an electronic device, and the method comprises the steps: carrying out the component analysis of underground water data of different geological stratums in a candidate sequestration area, and obtaining the isotope ratio of the same chemical composition, the isotope ratios are generated from chemical compositions and isotopes of the chemical compositions in the groundwater data, the different geological stratums include overground cover stratums and underground reservoirs, and the isotope ratios include a first isotope ratio of the overground cover stratums and a second isotope ratio of the underground reservoirs; according to the ratio change value of the first isotope ratio and the ratio change value of the second isotope ratio, determining the sealing grade of the candidate sealing region; and determining the candidate sequestration area as a carbon sequestration area under the condition that the closure level is determined to be higher than the preset level. By adopting the technical scheme, the problem that the storage area cannot be accurately determined is solved.

The application discloses a composite coating for low-carbon steel protection and a preparation method thereof, and belongs to the technical field of metal surface treatment and novel low-carbon building material. The composite coating comprises a low-carbon steel substrate and an inorganic transition layer formed by in-situ electrodeposition and directly attached to the surface of the substrate; the inorganic transition layer comprises a brucite layer and an aragonite layer generated by in-situ electrodeposition. The inorganic transition layer is combined with the low-carbon steel substrate through Fe-O-Mg covalent bonds, and the needle-shaped aragonite on the outer side of the inorganic transition layer can induce epitaxial growth of a subsequent functional coating, forming a component-interwoven interface transition zone. The preparation method adopts a step electrodeposition process, including a first stage of high current density deposition and a second stage of low current density deposition. The application realizes strong chemical combination and long-acting corrosion protection between the coating and the substrate by constructing a metal-inorganic connecting layer, and can be adapted to a calcium silicate carbonate cementitious material coating (preferably a gamma-C2S carbon mineralization coating) for metal corrosion protection.

In one aspect, the present invention relates to a plurality of matrix particles comprising a core and optionally at least one shell wherein the core comprises: (i) a matrix material wherein the matrix material is capable of completely or partially altering its physical and / or chemical properties; (ii) at least one susceptor component, wherein the at least one susceptor component is embedded in the matrix material; and (iii) at least one releasable ingredient, where the at least one releasable ingredient is embedded in the matrix material, where the at least one releasable ingredient is capable of physically or chemically affecting a physical or chemical composition in contact with the plurality of matrix particles; and wherein the at least one shell comprises: (iv) optionally the at least one susceptor component, wherein the at least one susceptor component is embedded in the at least one shell; and (v) at least one releasable component wherein the at least one releasable component is embedded in the at least one shell wherein the at least one releasable component is capable of physically or chemically influencing a physical or chemical composition in contact with the plurality of matrix particles.

A powdered composition for oral application of therapeutic agents includes a base material, at least one therapeutic agent, and a crosslinker. The composition is formed as a homogenous powder. An application device is also disclosed.

Provided are methods and composition for treating skin barrier functions and associated disorders. Formulated compositions may be applied on human skin to maintain a desired skin surface pH over an extended period of time without irritating the skin. Maintaining the desired surface pH aids in treatment of eczema, in addition to other skin conditions.

A bougie having the dimensions of a standard bougie used widely by first responders is further configured to emit tight with an intensity that transilmminates a patient's neck; thus the position of the bougie is visible to the first responder when placed in the patient's airway. The bougie includes a light source, which may be a luminescent chemical combination contained in a chamber of the bougie. The luminescent chemical may have a high intensity and a short duration. The light source may be a light-emitting diode powered by an onboard battery and emitting light into a fiber-optic cable that emits light from the distal end and / or from interruptions in a reflecting coating that allows transverse exit of some of the light. The light source may be a chemilmninescent material or compound. All components of the bougie are sized to pass through an endotracheal tube without removing any of the components.

The invention discloses an experimental measurement system and an experimental measurement method for fission product aerosol behaviors under a pool type lead-bismuth reactor accident, and belongs to the field of lead-based fast reactor thermal hydraulic safety. A reaction container and a telescopic rod are arranged in the pressure container; the reaction container is arranged at the bottom end of the pressure container, the telescopic rod is arranged at the top end of the reaction container, the telescopic rod is connected with the thermocouple, and the thermocouple is inserted into an insertion opening in the top end of the pressure container and is controlled to ascend and descend through the telescopic rod. The operation environment of a pool type reactor is simulated, then sampling analysis of the fission products in the lead-bismuth coolant in the whole process is achieved, the chemical combination decomposition characteristics and physical characteristics of the fission products can be known more visually, and due to the design of the pressure stabilizing system, the gas conveying system and the ventilation system, research parameters are more comprehensive, and the research efficiency is improved. Therefore, the evaporation rule of the fission product aerosol under the accident condition can be fully mastered conveniently according to most parameters of the pool type lead bismuth reactor under the accident condition.

The invention provides a nano titanium dioxide modified polyacrylate anti-ultraviolet coating and a preparation method thereof, and belongs to the technical field of functional coating materials. The preparation method comprises the following steps: adding anatase type nano TiO2 into a mixed solution of absolute ethyl alcohol and deionized water, carrying out ultrasonic dispersion treatment, adding KH570, carrying out a stirring reaction, washing, carrying out centrifugal separation, and drying to form K-TiO2 powder; dissolving an emulsifier and NaHCO3 in deionized water, stirring, adding an oil-phase mixed solution formed by a mixed monomer of methyl methacrylate, butyl acrylate and acrylic acid and the K-TiO2 powder, performing ultrasonic treatment, heating and stirring, and adding an initiator for reaction to obtain a composite coating emulsion; and curing and molding the composite coating emulsion to form the anti-ultraviolet coating. The surface of TiO2 is changed into lipophilicity from hydrophilicity through KH-570 modification, stable chemical bonding is formed through a Ti-O-Si bond and a polyacrylate matrix, and the interfacial compatibility is remarkably improved.

The present application relates to a modified film-forming agent and a preparation method thereof, the modified film-forming agent being a reaction product of an ultraviolet absorber monomer and a film-forming agent monomer, the ultraviolet absorber monomer being an ultraviolet absorber having an ester group, a carboxyl group and / or a hydroxyl group, and the film-forming agent monomer being a film-forming agent having a hydroxyl group, an ester group and / or a carboxyl group. According to the modified film-forming agent, through chemical combination of the film-forming agent and the sun-screening agent, the modified film-forming agent has the function of absorbing ultraviolet rays, and the problem of skin damage caused by small molecular weight of a traditional sun-screening agent is solved.