1242 results about "Methylene radical" patented technology

The invention discloses a modified amine curing agent and a preparation method thereof, and an epoxy resin composite material and a preparation method thereof, and belongs to the field of resin and composite materials. According to the curing agent, a C2-C8 alkyl chain is grafted to a methylene site of 4, 4 '-diaminodiphenylmethane (MDA) through free radical substitution and alkylation reaction, and a molecular structure with a flexible alkyl chain and a rigid benzene ring is formed. The preparation method comprises the following two steps: generating a halogenated intermediate from MDA and a halogen simple substance under certain reaction conditions, alkylating the halogenated intermediate with a Grignard reagent (RMgX), and purifying. The curing agent and epoxy resin are compounded, heated and cured, so that the epoxy resin composite material has relatively high impact strength and fracture toughness, has good tensile strength and hardness, has double functions of reinforcing and toughening, and solves the problem that reinforcing and toughening of traditional epoxy resin are difficult to be compatible; the method is suitable for the fields of aerospace, composite material adhesives and the like with harsh requirements on mechanical properties.

The invention relates to the technical field of adsorbent preparation, in particular to an ammonia modified porous carbon adsorbent and a preparation method thereof. The preparation method of the ammonia modified porous carbon adsorbent comprises the following steps: carrying out hydrothermal acid leaching on gasified fine residues and an acid solution to obtain acid leaching residues; stirring the acid leaching residues in an alkali solution, washing and drying to obtain a porous carbon material; and dipping the porous carbon material in a tetraethylenepentamine solution, and then drying to obtain the ammonia modified porous carbon adsorbent. The ammonia modified porous carbon adsorbent is successfully constructed by taking a porous carbon material derived from coal gasification fine slag as a substrate and further adopting a surface ammonia functionalization modification strategy. The preparation method is simple, the raw materials are easy to obtain, and the prepared ammonia modified porous carbon adsorbent has a good adsorption effect on methylene blue and hexavalent chromium. According to the method, high-added-value resource utilization of the coal gasification solid waste is achieved, and a solution is provided for treatment of the dye wastewater and the heavy metal wastewater.

The invention provides a photosensitive resin composition containing an anthracene methyl quaternary ammonium salt photosensitizer and application of the photosensitive resin composition, a structural main body anthracene ring of the photosensitizer is introduced into methylene substituted by a quaternary ammonium group at a position 10 and / or a position 9, and an acid radical or halogen is adopted as an equilibrium anion; compared with a commercially available anthracene photosensitizer, the photosensitizer has excellent fat solubility and good water solubility through introduction of the quaternary ammonium salt on the premise that the photobleaching property is retained, great potential is brought to formula design of the photosensitive composition, and development waste in a later development process can be greatly reduced; the method can be widely applied to the photo-curing fields of dry films, paints, coatings, printing ink, forming materials and the like.

The invention discloses a quick-curing polyurethane seamless expansion joint material for roads and a preparation method, and belongs to the technical field of road engineering materials. The material is prepared from polyether polyol, polycaprolactone glycol, a bisphenol A epoxy-polyether block isocyanate terminated prepolymer, a methyl phenyl silicon-boron hybrid hydroxyl chain extender, diphenylmethane diisocyanate, calcium carbonate, wollastonite, a hindered amine anti-aging agent and dioctyl phthalate. Wherein the bisphenol A epoxy-polyether block isocyanate terminated prepolymer is prepared by the following steps: reacting bisphenol A with epoxy chloropropane to generate epoxy resin, reacting with polytetramethylene ether glycol, and introducing isophorone diisocyanate; the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation and ethylene glycol reaction on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester; and the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester. The material has the advantages of quick curing property, weather resistance and high-temperature stability, and is suitable for road seamless expansion joint scenes.

A rubber coating for a radiofrequency identification device for a tyre characterized in that it comprises: (a) 100 phr of at least one diene-based elastomer; (b) at least one chemical according to formula (1) wherein the chemical comprises in its structure at least the structure of the 2,2′-methylenediphenol, and wherein the 2,2′-methylenediphenol may be substituted in ortho, para, meta position or any combination thereof with an aliphatic, linear or branched, hydrocarbon chain comprising from 1 to 10 C atoms, or may be polymerized in ortho, para, meta position or any combination thereof with one or more additional alkylphenol units. A radiofrequency identification (RFID) module for a tyre comprising a radiofrequency identification device surrounded by a rubber coating, a tyre or a tyre retread comprising such radiofrequency identification module, and use of a rubber coating for surrounding a radiofrequency identification device.

The invention discloses a super-strong mute building drainage pipe and a preparation method thereof, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by mass: 100 parts of high-density polyethylene, 5-7 parts of a cold-resistant toughening agent, 8-12 parts of a synergist, 8-10 parts of a sound insulation filler and 0.3-0.5 part of an antioxidant. By introducing the synergist prepared from the components such as polyamine polyether methylene phosphonic acid, zinc nitrate hexahydrate, magnesium nitrate hexahydrate and the like, the sound insulation, flame retardance and smoke suppression capabilities of the drainage pipe can be effectively improved; by introducing the sound insulation filler prepared from the modified halloysite nanotubes, hydroxyl-terminated polydimethylsiloxane, aziridine cross-linking agent and the like, the sound insulation, flame retardance and smoke suppression capabilities of the drain pipe are further improved. Therefore, the drainage pipe prepared by the invention has a wider application prospect.

The invention belongs to the field of daily chemicals, and discloses a preparation method of a sunscreen composition, which comprises the following steps: step 1, mixing and dispersing sodium stearoyl glutamate, a part of a thickener, a part of an alcohol solvent and a part of water; step 2, adding a sun-screening agent into the mixture obtained in the step 1; 3, grinding the mixture obtained in the step 2; 4, emulsifying and homogenizing the residual thickening agent, the residual alcohol solvent, the residual water and the mixture obtained in the step 3; the sun-screening agent contains methylene bis (benzotriazolyl) tetramethyl butyl phenol; the weight ratio of the sodium stearoyl glutamate to the methylene bis-benzotriazolyl tetramethyl butyl phenol is (2-7): (45-55). According to the sunscreen composition disclosed by the invention, wide experimental verification shows that the sodium stearoyl glutamate and the methylene bis-benzotriazolyl tetramethyl butyl phenol have obvious sunscreen synergy. Meanwhile, the invention also discloses the composition and application thereof.

The invention relates to a universal method for co-adsorbing perrhenate or pertechnetate by using cationic dye modified activated carbon, and belongs to the technical field of water treatment. In the system provided by the invention, the cationic dye modified activated carbon is used as an adsorbent of perrhenate or pertechnetate, and the cationic dye / activated carbon composite material realizes efficient removal of pollutants by co-adsorbing the perrhenate or pertechnetate in sewage. According to the invention, 12 activated carbon is used as a porous carrier, and after five different cationic dyes are respectively adsorbed, perrhenate radicals can be effectively adsorbed. Particularly, after methylene blue dye is adsorbed, perrhenic acid radicals can be quickly adsorbed within an extremely short time, and the adsorbent has the advantages of large adsorption capacity, good pH stability, high selectivity, good radiation resistance, low cost and the like, and can be applied to actual environmental sewage.

The invention provides a medical stent and a preparation method thereof.The preparation method comprises the steps that an anti-coagulation coating is arranged on at least part of the surface of the medical stent through physical coating, then an anti-hyperplasia coating is arranged on at least part of the surface of the medical stent through physical coating, the anti-coagulation coating comprises a copolymer, and the anti-hyperplasia coating comprises an anti-hyperplasia coating. A copolymer in the anticoagulant coating contains a zwitterionic unit and an adsorption unit, and the anti-hyperplasia coating contains an anti-hyperplasia drug and a degradable polymer; or, an anti-hyperplasia and anti-coagulation integrated coating is arranged on at least part of the surface of the medical stent through physical coating, the integrated coating contains a copolymer and an anti-hyperplasia drug, and the copolymer in the integrated coating contains a zwitter-ion unit, an adsorption unit and a degradable unit; the adsorption unit is an ester unit containing a carbon-carbon double bond, and the degradable unit is a 2-methylene-1, 3-dioxane unit. The problem that thrombus and restenosis exist at the same time after the stent is implanted can be solved, the binding force between the coating and the substrate is improved, and the falling risk of the coating is reduced.

The invention discloses a high-barrier material based on a PET aminolysis monomer and a preparation method of the high-barrier material, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: carrying out aminolysis reaction on polyethylene glycol terephthalate (PET) to prepare a dihydric alcohol monomer containing an amido bond, and carrying out polymerization reaction on the dihydric alcohol monomer and aliphatic dibasic acid to prepare a polyesteramide (PEA) material. The prepared PEA material has excellent oxygen barrier property and toughness, the oxygen barrier property of the PEA material is obviously superior to that of a PET material, and the barrier property and mechanical property of the PEA material can be regulated and controlled by changing the length of a methylene chain segment of the aliphatic dibasic acid monomer. The aliphatic dibasic acid monomer can be derived from biomass resources, the reaction condition is mild, the process is simple, and the method is suitable for industrial large-scale production.

The invention relates to the field of water treatment, and discloses a scale and corrosion inhibitor for seawater circulating cooling water, which is prepared from phosphonic acid grafted maleic anhydride-acrylic acid copolymer, hydroxyethylidene diphosphonic acid, amino trimethylene phosphonic acid, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N- The anti-corrosion coating is prepared from the following raw materials: N, N-diethylaminomethyl-benzotriazole, gamma-aminopropyltriethoxysilane, zinc salt and a polyoxyethylene-polyoxypropylene block copolymer. The core of the invention is that all the raw material components form the thermo-sensitive polyelectrolyte compound through a self-assembly process. The compound is stably dispersed at low temperature by utilizing the cloud point effect of the block copolymer, and is subjected to phase change and preferential deposition on a high-temperature heat exchange surface, so that targeted and efficient delivery of various active components is realized. According to the invention, the problems of incompatibility of components and poor stability of a traditional compound agent are solved, the product has excellent storage stability, and efficient and synergistic corrosion and scaling control can be realized under high-temperature and high-salinity working conditions.

The invention belongs to the technical field of food and feed analysis and detection, and particularly provides a nano antibody for detecting bacitracin methylene salicylate, and the nano antibody comprises a nano antibody BMD-BA19 and a nano antibody BMD-CA45; the amino acid sequence of a VHH chain of the nano antibody BMD-BA19 is as shown in SEQ ID NO: 1, and the amino acid sequence of a VHH chain of the nano antibody BMD-CA45 is as shown in SEQ ID NO: 2. The bacitracin methylene salicylate serves as a research object, after the bacitracin methylene salicylate is coupled with protein, an alpaca is immunized, two nano antibodies resisting bacitracin methylene salicylate are obtained through screening with a phage display technology, and a material is provided for establishing a bacitracin methylene salicylate detection method.

The present invention provides a composition for forming a gel polymer electrolyte which includes a lithium salt; an organic solvent; and a crosslinking compound represented by Formula 1. wherein in Formula 1, L1, L2, L3, and L4 are each independently selected from a direct bond or an alkylene group having 1 to 3 carbon atoms, L5 and L6 are each independently an alkylene group having 1 to 20 carbon atoms in which at least one methylene group is optionally substituted with an ether group and at least one hydrogen is substituted with fluorine, and R1 and R2 are each independently selected from hydrogen, an alkyl group having 1 to 3 carbon atoms, or a halogen.

A photoelectric composite cable for an underwater buoy, and a preparation process therefor. A polyurethane, a self-repairing polyurethane prepolymer, and a composite nano zinc oxide are selected as an outer sheath base material. A modified polysiloxane having a B-O six-membered ring dynamic cross-linked network and a long-chain alkane group and an amino is introduced into the self-repairing polyurethane prepolymer; 5,5'-methylenedisalicylaldehyde and isophorone diisocyanate are together subjected to stepwise polymerization with the modified polysiloxane, and the 5,5'-methylenedisalicylaldehyde is cross-linked with diphenylmethane diisocyanate to obtain a self-repairing polyurethane prepolymer; and nano zinc oxide is subjected to a modification treatment, wherein dodecyltrimethoxysilane and 3-glycidoxypropyltrimethoxysilane are used for dual modification, such that super-hydrophobic nano zinc oxide having good thermal stability and high dispersity is prepared in a toluene system.

The invention discloses a 4, 4 '-bis (omega-alkenyl thioether) diphenyl sulfide monomer and a preparation method, the structural general formula of the 4, 4'-bis (omega-alkenyl thioether) diphenyl sulfide monomer is shown in the specification, n represents the number of methylene and is a positive integer, n = 1-10, the refractive index of a polymer obtained after the monomer and 4 '4-dimercapto diphenyl sulfide are polymerized is larger than 1.65 and smaller than 1.8, diffraction efficiency is remarkably improved, the preparation method is easy to operate, and the preparation method is suitable for industrial production. The invention further provides a photopolymer type holographic recording medium containing the monomer and a preparation method of the photopolymer type holographic recording medium, the sensitivity of the holographic recording medium is larger than 100 cm / mJ, the diffraction efficiency of a recording grating is larger than 95%, the refractive index modulation degree is larger than 0.1, the shrinkage rate is lower than 1%, and the preparation method is simple, controllable and suitable for industrial production. The invention also provides a volume holographic grating containing the holographic recording medium, a holographic optical element and an optical device.

The invention relates to the technical field of OLED (Organic Light Emitting Diode) manufacturing process etching processes, in particular to a silver etching solution for an OLED manufacturing process as well as a preparation method and application of the silver etching solution. The silver etching liquid comprises nitric acid, phosphoric acid, a buffer agent, a metal ion chelating agent and an ionic liquid inhibitor, the ionic liquid inhibitor comprises 1-butyl-3-methylimidazole phosphate, the metal ion chelating agent is selected from at least one of pyromellitic acid, diethylenetriamine pentaacetic acid and ethylenediamine tetramethylene phosphoric acid, and the buffer agent is selected from at least one of sodium chloride, sodium chloride and sodium chloride. The buffering agent comprises acetic acid, and all the components are prepared according to a specific mass ratio. The etching solution can balance the etching rate of silver and indium tin oxide, avoid silver residues and black spot defects, prolong the service life of the solution, reduce the use of a volatile buffer agent, adapt to the OLED fine manufacturing process, improve the product yield and reduce the production cost, and is suitable for etching of a metal substrate in the OLED manufacturing process.

The invention relates to the technical field of high polymer materials, in particular to an EVA / nano-zinc oxide anti-ultraviolet car cover and a preparation method thereof. The invention aims to solve the problem that the mechanical strength and the ultraviolet resistance of the existing car cover are difficult to consider at the same time. Ethylene-vinyl acetate resin is used as a matrix, a silane coupling agent and hydroxyethyl methylacrylate surface modified and grafted composite nano-zinc oxide, maleic anhydride grafted EVA and a polyurethane modifier are subjected to melt blending, a TMPTA cross-linking agent is added, and the vehicle cover film is prepared through extrusion casting and ultraviolet curing. Wherein the polyurethane modifier is obtained by reacting polycaprolactone polyol with isophorone diisocyanate and adopting hydroxyethyl methylacrylate and 2, 2 '-methylenebis (6-tert-butyl-4-methylphenol) for end capping. The uvioresistant car cover prepared by the invention has excellent tensile strength, elongation at break, uvioresistant performance and adhesive force at the same time.

The present invention relates to a polymer electrolyte comprising a co-polymer and alkali metal ions, the co-polymer comprising a first, a second and optionally a third constitutional unit, wherein, the first constitutional unit is formed from a first monomer selected from the group consisting of a 5 to 8 membered cyclic carbonate and a 5 to 8 membered cyclic ether, wherein said cyclic carbonate or cyclic ether comprises an unsaturated carbon-carbon bond or is substituted by a methylidene, vinyl or allyl group, and is unsubstituted or substituted by one or two C1-6alkyl or phenyl groups; the second constitutional unit is formed from a second monomer selected from the group consisting of a C1-6alkyl acrylate and a C1-6alkyl methacrylate, said C1-6alkyl of the C1-6alkyl acrylate or C1-6alkyl methacrylate substituted by one or more halogen atoms; and the third constitutional unit is formed from a third monomer selected from the group consisting of a poly(ethylene glycol) acrylate and poly(ethylene glycol) methacrylate Also disclosed herein is a method of preparing the polymer electrolyte of the present invention and a battery comprising the polymer electrolyte of the present invention.

The invention relates to the technical field of adsorbent preparation and methylene blue adsorption, in particular to application of an ammonia modified porous carbon adsorbent in methylene blue adsorption. An ammonia modified porous carbon adsorbent is added into a water sample containing methylene blue for adsorption, so that the methylene blue in the water sample is removed; the preparation method of the ammonia modified porous carbon adsorbent comprises the following steps: carrying out hydrothermal acid leaching on gasified fine residues and an acid solution to obtain acid leaching residues; stirring the acid leaching residues in an alkali solution, washing and drying to obtain a porous carbon material; and dipping the porous carbon material in a tetraethylenepentamine solution, and then drying to obtain the ammonia modified porous carbon adsorbent. The ammonia modified porous carbon adsorbent is successfully constructed by taking a porous carbon material derived from coal gasification fine slag as a substrate and further adopting a surface ammonia functionalization modification strategy. The ammonia modified porous carbon adsorbent has a good adsorption effect on methylene blue.

The invention belongs to the technical field of drug development, and particularly relates to application of (E)-N-benzyl-2-((5-(thiophenyl) furan-2-yl) methylene) hydrazine-1-thioformamide in preparation of drugs for treating nervous system diseases. The invention aims to provide a medicine which has small toxic and side effects and can target SLC11A2 to treat or improve nerve cell injury. According to the technical scheme, the invention relates to application of (E)-N-benzyl-2-((5-(thiophenyl) furan-2-yl) methylene) hydrazine-1-thioformamide in preparation of a medicine for treating nervous system diseases, in particular to application of (E)-N-benzyl-2-((5-(thiophenyl) furan-2-yl) methylene) hydrazine-1-thioformamide. It is proved that the compound (E)-N-benzyl-2-((5-(thiophenyl) furan-2-yl) methylene) hydrazine-1-thioformamide is small in toxic and side effect, and nerve cell damage can be protected or improved by targeting SLC11A2; and a new choice is provided for treating or improving nerve cell injury.

The invention belongs to the technical field of biological medicines, and discloses lipid nanoparticles for muscle in-situ delivery as well as a preparation method and application of the lipid nanoparticles. According to the invention, four components Ugi of aldehyde, isonitrile, amine and carboxylic acid are subjected to a reaction to synthesize the ionizable cationic lipid. The ionizable cation lipid formed by introducing an ionizable cation head group into an isonitrile component has muscle in-situ nucleic acid delivery performance. The unsaturation degree of a lipid hydrophobic tail chain, the number of methylene spacers of an ionizable cation head group and LNP formula composition and process are further optimized, muscle in-situ selective mRNA delivery performance is enhanced, off-target liver expression is avoided, safety can be improved, and different application requirements of mRNA vaccines, nucleic acid drugs, gene editing and the like can be met.

The invention discloses high-strength deformable porous hydrogel for postoperative abdominal cavity tissue effusion drainage, belongs to the technical field of medical porous hydrogel, and particularly relates to a temperature-sensitive hydrogel reaction solution obtained by adding a monomer, a cross-linking agent and an initiator into water and mixing, and freezing and polymerizing to obtain ice gel; treating the ice gel in a salting-out solution to obtain porous hydrogel; the cross-linking agent is prepared from at least one of N, N-methylene bisacrylamide, N, N-methylene bisacrylamide and polyethylene glycol diacrylate. The invention provides the high-strength deformable porous hydrogel for postoperative abdominal cavity tissue effusion drainage, which has a temperature-sensitive effect, can be dynamically controlled through electric heating, and has good mechanical properties and a good drainage effect.

The invention relates to the technical field of organic synthetic chemistry, in particular to a preparation method of ethyl 2-n-butyl acetoacetate, which comprises the following specific steps: S1, preparation of a composite solid base catalyst, S2, synthesis of ethyl 2-n-butyl acetoacetate, S3, post-treatment of a reaction solution, and S4, separation and purification of a product. The preparation method has the following beneficial effects that the magnesium-aluminum composite oxide is used as a carrier, and the composite solid base catalyst loaded with potassium and lanthanum has relatively high catalytic activity and selectivity; the magnesium-aluminum composite oxide carrier has a relatively large specific surface area and rich alkaline sites, so that a good catalytic environment is provided for the reaction; as a main active component, potassium ions can effectively activate alpha-active methylene of ethyl acetoacetate and promote formation of negative ion intermediates; the introduction of lanthanum ions can adjust the electronic structure of the catalyst, enhance the stability of the active center and inhibit the occurrence of side reactions.

The invention discloses a preparation method of a conductive elastomer. The preparation method comprises the following steps: (1) mixing N-hydroxyethyl acrylamide, glycerol and choline chloride, heating and stirring to obtain a clear and transparent solution A; (2) adding furfuryl methacrylate and N, N '-(4, 4'-methylene diphenyl) bismaleimide into the solution A prepared in the step (1), heating and stirring to obtain a clear and transparent solution B; (3) adding a photoinitiator into the solution B prepared in the step (2), and stirring in a dark place to obtain a clear and transparent solution C; and (4) pouring the solution C prepared in the step (3) into a mold, and performing in-situ polymerization under ultraviolet irradiation to obtain the conductive elastomer. The conductive elastomer has excellent mechanical strength and toughness.

The invention relates to the technical field of high polymer materials, and discloses a preparation method of a modified master batch degradable material and application of the modified master batch degradable material in a packaging lunch box, and the modified master batch degradable material comprises the following components by mass: 75.0-93.8 parts of poly (butylene succinate); 5.0 to 20.0 parts of aliphatic series-aromatic copolyester; 1.0 to 4.0 parts of 1, 1 '-methylenebis-4, 1-phenylene-bismaleimide, and 1.0 to 4.0 parts of 1, 1'-methylenebis-4, 1-phenylene-bismaleimide; 0.5 to 2.0 parts of talcum powder; the method comprises the following steps: mixing dried poly (butylene succinate), aliphatic-aromatic copolyester, bismaleimide and talcum powder, performing reactive extrusion and melt mixing through a twin-screw extruder, and then cooling, pelletizing and drying the extrudate. Through specific components and a reactive extrusion process, a dynamic cross-linked network is formed by utilizing a Diels-Alder reaction, and the modified master batch degradable material of which the comprehensive mechanical property and the heat resistance are remarkably improved is prepared.

The invention provides a high-strength anti-ultraviolet regenerated PET fiber and a preparation method thereof. The preparation method comprises the following steps: in a nitrogen atmosphere, dissolving 2, 2 '-methylenebis [6-(benzotriazolyl)-tetramethylbutylphenol] and hexamethylene diisocyanate in N-methyl pyrrolidone, adding a catalyst for reaction, then heating to remove residual monomers, cooling, dropwise adding into ice methanol to separate out a product, washing, and carrying out vacuum drying to obtain an anti-ultraviolet auxiliary agent; the preparation method comprises the following steps: dissolving an anti-ultraviolet aid and hexamethylenediamine in an aprotic solvent, adding a catalyst, carrying out condensation reaction in a nitrogen atmosphere, and carrying out centrifugal washing and vacuum drying to obtain the anti-ultraviolet composite chain extender, the preparation method comprises the following steps: mixing an anti-ultraviolet composite chain extender with recycled PET fragments, adding an antioxidant, a hydrolysis-resistant solution and a lubricant, and carrying out blending spinning through a double-screw extruder to obtain the high-strength anti-ultraviolet regenerated PET fiber. According to the invention, through anti-ultraviolet-chain extension chemical bonding, the bottleneck that the strength and the function of the regenerated PET fiber are difficult to synergistically improve is broken through.

The invention discloses a preparation method of a halloysite nanotube adsorption material with sulfonic groups polymerized on the surface, and belongs to the technical field of wastewater treatment materials, the preparation method comprises the following steps: S1, adding 5.0 g of halloysite nanotubes and 5 mL of gamma-methacryloxypropyltrimethoxysilane into 100 mL of toluene; s2, in a magnetic stirrer, condensing and refluxing at 120 DEG C for 10 hours, cooling, filtering, washing with toluene and ethanol for multiple times to remove unreacted KF570, and drying a product in a vacuum drying oven at 60 DEG C for 8 hours to obtain a KH570 modified halloysite nanotube; s3, weighing 1.0 g of HNTs-KH570 as a raw material, dispersing the HNTs-KH570 in 80 mL of distilled water, adding 5.0 g of 2-acrylamide-2-methylpropanesulfonic acid, performing uniform ultrasonic dispersion, and continuously stirring at the temperature of 70 DEG C; and S4, adding 0.15 g of ammonium persulfate into 20 mL of distilled water, and fully stirring to completely dissolve the ammonium persulfate. The adsorption performance of the halloysite nanotube to methylene blue is remarkably improved through sulfonic acid group modification, and the adsorption capacity is improved by 270%.

The invention relates to the technical field of water treatment agents, and particularly discloses an anti-corrosion deoxidizing composite agent for geothermal well recharge water and a preparation method of the anti-corrosion deoxidizing composite agent. The invention relates to an anti-corrosion and deoxidizing composite agent for geothermal well recharge water. The anti-corrosion and deoxidizing composite agent comprises the following raw materials: 30-40 parts of double modified sodium sulfite, 10-20 parts of a corrosion inhibitor, 8-15 parts of a scale inhibitor, 5-10 parts of amino trimethylene phosphonic acid, 5-10 parts of etidronic acid, 3-8 parts of polyethylene glycol monomethyl ether acrylate and 40-50 parts of deionized water. The dual-modified sodium sulfite is obtained by sequentially modifying sodium sulfite with a silane coupling agent and acrylic acid. The corrosion-resistant and oxygen-removing composite agent has the advantage of being high in oxygen-removing efficiency stability, the corrosion-resistant and scale-inhibiting functions are synchronously and synergistically improved on the basis that the oxygen-removing efficiency stability is guaranteed, and the complex working condition requirements of geothermal well recharge are completely met.

The present invention discloses a combined flotation regulator for high-mud lead-zinc oxide ores and its application method. The combined regulator consists of regulator A and regulator B in a mass ratio of 1:(3-10); regulator A is a high-molecular polysaccharide substance; regulator B consists of B1 and B2, with B1 being 80-90 parts by mass and B2 being 10-20 parts by mass; B1 is sodium silicate, and B2 is at least one of polyaminopolyether methylene phosphonic acid, polyepoxysuccinic acid, and 2-butanephosphonate-1,2,4-tricarboxylic acid. The application method is as follows: grinding the raw ore, sequentially adding sodium carbonate, regulator A, regulator B, and sodium sulfide for slurry mixing, and finally adding a collector for zinc oxide mineral flotation to obtain a zinc oxide coarse concentrate. The present invention can effectively recover zinc oxide minerals in high-mud lead-zinc oxide ores, the reagent components are non-toxic and harmless, the application method is simple, and it is convenient for large-scale production management.

The invention discloses a polyolefin self-repairing material and a preparation method thereof, a main chain of the polyolefin self-repairing material contains structural units shown in a general formula (I) and a general formula (II), a side chain of the polyolefin self-repairing material contains a structural unit shown in a general formula (III), the main chain and the side chain are connected through a covalent bond, in the formulas, x and y are molar percentages of the structural units in the main chain, and in the formulas, x and y are the molar percentages of the structural units in the main chain. X and y are positive numbers satisfying x > 0, y > 0, x > y, and 80% < = x + y < = 100%; r is a halogen atom, and R1 and R2 are aliphatic methylene chains or aromatic groups with the carbon atom number of 1-10; and R3 is amino, hydroxyl or carboxyl. The polyolefin self-repairing material has both a physical effect and a chemical effect, the self-repairing time of the material can be shortened, and the self-repairing efficiency is improved. Meanwhile, dynamic chemical bonds endow the material with a cross-linked structure, and the mechanical property of the material can be improved.