388 results about "Cyanuric acid" patented technology

The invention discloses a corrosion-resistant and anti-aging plastic packaging film and a preparation method thereof, and is used for solving the technical problem that the corrosion resistance and ultraviolet aging resistance of a packaging film in the prior art need to be further improved. The polypropylene composite material comprises the following raw materials in parts by weight: 60-80 parts of modified polypropylene resin, 1-2 parts of a compound nucleating agent, 10-15 parts of a modified filler, 1-2 parts of an antioxidant, 1-2 parts of an ultraviolet light absorber, 1-2 parts of a light stabilizer and 3-5 parts of a plasticizer, the tensile property of the material is improved through crystal form remolding, and the flame retardant property of the material is improved through synergistic cooperation of an internal phosphate structure, an aluminum element and thiocyanuric acid and siloxane chain segments in the material; and the ultraviolet light absorber cross-linked by the compound nucleating agent, the modified filler and the siloxane chain segment are synergistically matched, so that the ultraviolet aging resistance of the material is remarkably improved.

The invention discloses a high-specific-surface-area high-nitrogen-oxygen-doped lignin porous carbon material as well as a preparation method and application thereof. The method comprises the following steps: firstly, preparing a supramolecular compound from lignin, magnesium hydroxide, cyanuric acid and melamine through solvothermal reaction, then directly carbonizing to obtain a nitrogen-doped lignin carbon / magnesium oxide compound, and activating the nitrogen-doped lignin carbon / magnesium oxide compound by using weakly corrosive sylvite to increase a micro-mesoporous structure. Therefore, the nitrogen and oxygen doped lignin porous carbon material with ultrahigh specific surface area and rich micro-mesopores is prepared. According to the obtained lignin porous carbon material with the high specific surface area and high nitrogen and oxygen doping, a large number of active sites can be provided due to the high specific surface area, wettability of the carbon material can be improved due to high nitrogen and oxygen doping, the utilization rate of the active sites is increased, and the problem that the pore diameter of the carbon material is not matched with a current carrier is solved due to the rich micro-mesoporous structure; and the specific capacitance of the zinc ion hybrid capacitor is obviously improved.

The invention relates to the field of textile processing, and discloses a polyester knitted fabric flame-retardant finishing method, which is characterized in that modified waterborne polyurethane emulsion is finished on a washed and dried polyester knitted fabric by using a dipping and drying method; the modified waterborne polyurethane emulsion is prepared from isophorone diisocyanate, an amine chain extender, a flame-retardant cross-linking agent, modified nano titanium dioxide and the like, and the amine chain extender is prepared from 2-(2, 4-dihydroxyphenyl)-2H-benzotriazole and 2-chloro-4, 6-diamino-1, 3, 5-triazine through a reaction; the flame-retardant cross-linking agent is prepared from 1, 3, 5-tri (2-hydroxyethyl) cyanuric acid and dimethyl methylphosphonate through a reaction; the modified nano titanium dioxide is prepared from modified silane coupling agent modified nano titanium dioxide hybrid silica sol obtained by reaction of tetramethyldisiloxane and vinyltrimethoxysilane, so that the material is endowed with good flame retardant property, the ultraviolet protection property of the material is improved, and the mechanical property of the material is ensured.

A composition for reducing the concentration of cyanuric acid and other contaminants in treated recreational water, including swimming pools and other recreational bathing structures, said composition comprising at least one ion exchange resin and at least one surface-modified activated carbon, a pouch comprising the composition, and a method reducing the concentration of cyanuric acid and other contaminants in treated recreational water, said method comprising adding the composition to or putting the composition in contact with treated recreational water.

The invention discloses an intumescent nitrogen-phosphorus flame retardant and a preparation method thereof. The method comprises the following steps: reacting a cyanuric acid derivative with polyphosphoric acid to obtain a product, and carrying out salt forming reaction on the product and an amine compound to obtain the intumescent nitrogen-phosphorus flame retardant. The method is simple in synthesis step, high in yield, free of toxic volatile matters and suitable for industrial production. The obtained flame retardant has high nitrogen and phosphorus content, shows good expansion capacity when meeting fire, is good in compatibility with various water-based adhesives, is not prone to moisture absorption and has good application prospects.

The invention relates to a composite nanodot loaded porous carbon nitride photocatalyst as well as a preparation method and application thereof, and the preparation method comprises the following steps: calcining a precursor formed by mixing melamine, cyanuric acid and trithiocyanuric acid to obtain porous carbon nitride, and loading cobalt oxide nanodots and nickel nanodots on the porous carbon nitride in two steps, the composite nanodot loaded porous carbon nitride photocatalyst with excellent visible light catalytic hydrogen production performance is obtained; when the composite nanodot loaded porous carbon nitride photocatalyst obtained by the method is used for photocatalytic hydrogen production, an activity test result shows that the activity of the photocatalyst prepared by the method is improved by 222.5 times compared with that before modification; the preparation method disclosed by the invention has the advantages of high reaction efficiency and good performance of the obtained photocatalyst, and has a wide application prospect.

The invention belongs to the technical field of water treatment, and discloses an oxygen-containing functional group modified cobalt-based carbon nanotube as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing and stirring functionalized carbon nanotubes, cobalt salt, cyanuric acid, melamine and a solvent, and then performing centrifugal separation, washing and drying to obtain a precursor; calcining the precursor in a protective atmosphere, and then pickling to obtain the oxygen-containing functional group modified cobalt-based carbon nanotube. Cobalt nitrate is used as a cobalt source, cobalt exists in the form of ions, in the calcining process, cobalt is embedded into a carbon nano tube by means of nitrogen of melamine, cobalt monoatoms exist, cobalt clusters are generated, oxygen-containing functional groups and the cobalt clusters have a regulation and control effect on a charge structure of an active center of the cobalt monoatoms, and the oxygen-containing functional groups and the cobalt clusters have a regulation and control effect on the active center of the cobalt monoatoms. The electric charge density of a cobalt monatomic active center is weakened together, and the binding energy to an intermediate OOH is regulated and controlled, so that the material is a 2e--ORR electrocatalyst with high activity and high selectivity.

The invention discloses a surface defect and oxygen doping co-modified pore-rich g-C3N4 nano material as well as preparation and application thereof. The preparation method comprises the following steps: mixing a white viscous melamine-cyanuric acid suspension with an oxalic acid solution to obtain a melamine-cyanuric acid-oxalic acid suspension solution, carrying out hydrothermal treatment to obtain a hydrogen bond connected self-assembled supramolecular aggregate, and finally carrying out thermal polycondensation on the self-assembled supramolecular aggregate and formaldehyde to obtain the surface defect and oxygen doping co-modified porous g-C3N4. The surface defect and oxygen doping co-modified g-C3N4 nano material with different morphologies and physicochemical properties is obtained. The preparation method is simple in process flow, efficient, low in cost and suitable for large-scale production, and the synthesis process meets the green chemical requirement; the obtained nano material has a higher specific surface area and more active sites, and has higher catalytic reaction and adsorption performance on organic pollutants, namely levofloxacin, ciprofloxacin and tetracycline hydrochloride, in a water body.

The present invention discloses a high- and low-temperature resistant environmentally friendly water-based polyurethane coating and a preparation method thereof, belonging to the technical field of chemical coatings. The preparation method comprises: reacting isophorone diisocyanate with cyanuric acid at 80-90°C to generate a prepolymer containing a triazine ring cross-linked network; adding hyperbranched polycaprolactone to the prepolymer, and vacuum dehydrating the prepolymer to form a mixed prepolymer; using dimethylolpropionic acid to extend the chain and neutralizing it with triethylamine, adding a coating additive and shearing and emulsifying to obtain a high- and low-temperature resistant environmentally friendly water-based polyurethane coating. Through the synergistic effect of the rigid triazine ring network and the hyperbranched chain segments, the coating has both brittle crack resistance and creep resistance over a wide temperature range; the amphiphilic chain extender ensures emulsion stability and low VOC content.

The invention relates to the technical field of materials, and discloses a composite flame retardant as well as a preparation method and application thereof. Carrying out first reaction on the DOPO grafted silane coupling agent and capsaicin to obtain a first reaction product; and carrying out a second reaction on melamine, cyanuric acid and the first reaction product, and carrying out freeze drying and grinding on the obtained second reaction product to obtain the composite flame retardant. The composite flame retardant can be used for preparing a polypropylene composite material. According to the invention, ammonium polyphosphate, dipentaerythritol and a composite flame retardant are utilized to form a rat-bite-proof intumescent flame-retardant system, and the rat-bite-proof intumescent flame-retardant polypropylene composite material is prepared through melt blending; the oxygen index of the composite material can meet the flame-retardant requirement, the problem that molten drops severely drop during combustion is solved, meanwhile, the irritation influence of capsaicin in the material is reduced, and the polypropylene composite material is endowed with the non-toxic and non-lethal avoidance effect.

The invention discloses a rice hull fiber environment-friendly material and a preparation method thereof, and belongs to the technical field of polypropylene plastics. The preparation method is used for solving the technical problems that a plastic product prepared from polypropylene plastic in the prior art is difficult to degrade, and the mechanical property of the polypropylene plastic can be damaged by doping degradable organic components. The rice hull fiber environment-friendly material comprises rice hull fiber composite microspheres, a chlorinated polypropylene graft copolymer and related auxiliaries. The rice hull fiber composite microspheres are prepared by blending acylated rice hull fiber powder and a melt as a core material, wherein the melt is obtained by mixing rosin, silver nitrate and polylactic acid and heating; the chlorinated polypropylene grafted copolymer is obtained by taking chlorinated polypropylene as a main body and initiating grafting of methyl methacrylate and triallyl cyanurate. The rice hull fiber environment-friendly material prepared by the invention has the advantages of good mechanical property, bacteriostasis, flame retardance and degradability.

The invention discloses a preparation method of a cobalt-loaded porous skeleton-shaped graphite phase carbon nitride catalytic material, which comprises the following steps: (1) dissolving melamine in deionized water in an oil bath state to obtain a melamine solution; dissolving cyanuric acid in deionized water in an oil bath state to obtain a cyanuric acid solution; (2) slowly dropwise adding a cyanuric acid solution into a melamine solution, fully stirring, carrying out suction filtration, washing, drying, and pyrolyzing in a nitrogen atmosphere to obtain a g-C3N4 carrier; and (3) dispersing a divalent cobalt salt and the g-C3N4 carrier in deionized water, fully stirring, centrifuging, collecting a precipitate, freeze-drying, and pyrolyzing in a nitrogen atmosphere to obtain the Co-g-C3N4 catalytic material. The porous framework-shaped graphite phase carbon nitride prepared by the method is formed by tightly stacking a large amount of flaky and tubular graphite phase carbon nitride, the surface of the porous framework-shaped graphite phase carbon nitride is porous, the structure is loose, and abundant attachment sites are provided for attachment of cobalt atoms.

The invention relates to an intelligent preparation method of a cyanuric acid / melamine compound based on a molecular self-assembly technology, and relates to the field of preparation of flame-retardant composites.The intelligent preparation method comprises the steps that a communication molecular self-assembly controller is used for receiving and preparing genotype factors; preparing phenotype factors and seed crystal material types through a user side; constructing a character mapping function according to the material type of the seed crystal; constructing a flame-retardant quality evaluation function; the method comprises the following steps: constructing a cyanuric acid / melamine compound preparation gene first population based on seed material type backtracking; and based on the character mapping function and the flame retardant quality evaluation function, optimizing the first population of the cyanuric acid / melamine compound preparation gene, and obtaining a recommended genotype factor characteristic value combination to initialize a molecular self-assembly controller for preparation control. The technical problem that in the prior art, multiple experiments are conducted through control variables, optimal configuration of control elements in the molecule self-assembly process is achieved, and consequently efficiency is low is solved.

A crushing device for cyanuric acid production effectively achieves the purpose of adjusting the diameter of crushed particles, and comprises a supporting table, a circular sleeve; a storage groove; the fixed friction plate is fixedly connected with the storage groove; the rotating friction plate is arranged on the inner side of the fixed friction plate, the bottom of the rotating friction plate is arranged in the storage groove, the middle of the rotating friction plate is fixedly connected with a conveying pipe, and the middle of the conveying pipe is rotationally connected with an auger; the annular frame is arranged on the inner side of the material storage groove and slides in the vertical direction relative to the material storage groove, and the top of the annular frame makes contact with the rotating friction plate; the discharge pipe is arranged at the bottom of the storage groove and communicated with the discharge port, the bottom of the conveying pipe penetrates through the top of the discharge pipe, the auger penetrates through the discharge pipe, the bottom of the auger is fixedly connected with a sieve plate, and an included angle is formed between the sieve plate and the horizontal plane. And the secondary crushing function is effectively increased.

The invention relates to a monoatomic catalytic material capable of efficiently degrading sulfamethoxazole as well as a preparation method and application of the monoatomic catalytic material. The preparation method comprises the following specific steps: dispersing 2 mmol of cobalt chloride hexahydrate, 0.5 g of tannic acid, 5 g of melamine and 5 g of cyanuric acid in 400 mL of water, and magnetically stirring at room temperature overnight; and pouring supernate out of the solution, drying in an air dry oven at 60 DEG C overnight, and grinding with an agate mortar. And carrying out annealing reaction in a nitrogen tube furnace at 600 DEG C for 2 hours. The prepared black charcoal is ground by an agate mortar, then is stirred and washed by a 0.5 M sulfuric acid solution at room temperature for 12 hours, and then is subjected to suction filtration and washing by water until the filtrate is nearly neutral in pH. And finally, drying in a vacuum drying oven, grinding by using an agate mortar, and filling into a pipe to obtain the Co2TA0.5 catalyst. The simple Co2TA0.5 catalyst provided by the invention has more excellent catalytic performance, and can activate PMS to efficiently remove SMX in water.

The invention belongs to the technical field of flame-retardant materials, and particularly relates to a hyperbranched flame retardant, a preparation method thereof and flame-retardant epoxy resin. The specific preparation method comprises the following steps: in a solvent system, placing itaconic anhydride and phosphaphenanthrene at 80-110 DEG C, and carrying out an addition reaction to obtain a first intermediate; mixing phosphorus oxychloride and 1, 3, 5-tris (2-ethoxyl) cyanuric acid in a solvent system, and carrying out nucleophilic substitution reaction under the action of an acid-binding agent to obtain a second intermediate; carrying out esterification reaction on the first intermediate and the second intermediate at 80-120 DEG C to obtain a phosphorus-nitrogen intermediate; and under a protective atmosphere, placing the phosphorus-nitrogen intermediate and boric acid at 120-160 DEG C, and carrying out a condensation reaction to obtain the hyperbranched flame retardant. The flame-retardant epoxy resin prepared by using the hyperbranched flame retardant prepared by the invention not only has excellent flame retardant property, but also has the characteristics of high strength and high toughness.

The invention discloses a preparation method and application of an iron carbide nanoparticle modified carbon-based Fe monatomic catalyst, in the preparation process, Fe < 3 + > is complexed with oxalic acid in advance to realize coordination self-assembly and effectively inhibit hydrolysis of Fe < 3 + >, and glucose is used as a carbon-based carrier precursor and a reducing agent to prepare a carbon-based Fe monatomic catalyst. According to the preparation method, the self-assembled iron species are converted into Fe3C nanoparticles at a high temperature, melamine and cyanuric acid are used as N sources to realize N-doped carbon and anchor part of the iron species to form Fe monatomic atoms, and in addition, oxalic acid, melamine and cyanuric acid are easy to decompose at the high temperature to generate small-molecule gas, so that glucose forms a porous carbon structure during high-temperature carbonization, and the porous carbon structure is formed. Finally, Fe3C and Fe monatomic synergistic coexistence hierarchical porous N-doped composite carbon-based catalyst is achieved, the obtained catalyst can efficiently activate peracetic acid and degrade phenol organic pollutants, and the catalyst is simple in preparation process, good in catalytic effect and high in stability and has wide application potential.

The invention belongs to the technical field of flame-retardant master batches, and particularly relates to a flame-retardant master batch for polypropylene and a preparation method thereof.The preparation method comprises the steps that tris (2-hydroxyethyl) isocyanurate is heated and molten, tetrabutyl titanate and DOPO-DPP are added into the molten tris (2-hydroxyethyl) isocyanurate, the mixture reacts for 3-4 h, melamine and cyanuric acid are added into the molten tris (2-hydroxyethyl) isocyanurate, the mixture reacts for 30 min, cooling and smashing are conducted, and a macromolecular flame retardant TDMC is obtained; the preparation method comprises the following steps: carrying out ester exchange reaction on 2, 4-diphenyl-6-[2-hydroxy-4-(ethoxycarbonyl methoxy) phenyl]-1, 3, 5-triazine and 2, 2, 6, 6-tetramethyl piperidinol to prepare a free radical capturing agent; the polypropylene, the TDMC, the free radical scavenger and the zeolite are put into a high-speed mixer to be stirred and mixed, and then extrusion granulation is performed. The macromolecular flame retardant TDMC is adopted, the molecular weight of the macromolecular flame retardant TDMC is large, the water resistance is good, and the compatibility and damp-heat stability of the flame-retardant master batch in polypropylene are improved.

The invention relates to high-performance flame-retardant nylon 6 and a preparation method thereof, and the high-performance flame-retardant nylon 6 comprises caprolactam, cyanuric acid, cyanuric acid, a caprolactam hydrolysis ring-opening polymerization initiator, a macromolecular structure regulator, an impact modifier and a flame-retardant dispersant. In the hydrolysis ring-opening polymerization process of caprolactam, two raw materials including melamine and cyanuric acid are added to participate in a chemical reaction of nylon 6 forming and are connected to a molecular chain of nylon 6, a polymer regulator and an anti-modification impact agent are added, and the high-performance flame-retardant nylon 6 with UL94V-0 flame retardance, better impact strength, excellent tensile property and lower cost is prepared through a one-step method.

The invention belongs to the technical field of methyl red azo dye purification, and discloses a methyl red azo dye adsorbent with good adsorption performance on a methyl red azo dye adsorbent, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a first precursor solution and a second precursor solution; the first precursor solution contains melamine, and the second precursor solution contains cyanuric acid and / or barbituric acid; (2) sequentially adding the first precursor solution and the second precursor solution into biomass carbon powder to form a reaction solution; enabling the supermolecule aggregate to grow in situ and coat the surface of the biomass carbon powder under a stirring condition to form a solid-liquid mixture; removing the solvent in the solid-liquid mixture, and drying to obtain a supramolecular composite precursor; (3) carrying out pressure molding on a mixture of the supramolecular composite precursor, silicate clay mineral and nickel salt to obtain a green body; and (4) carrying out heat treatment on the green body to obtain the methyl red azo dye adsorbent.

The invention belongs to the technical field of catalyst preparation, and relates to yttrium monatomic in-situ co-doped carbon nitride as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing an yttrium-containing carbon nitride precursor from melamine, cyanuric acid, an organic carbon source and yttrium nitrate hexahydrate as raw materials by adopting a precipitation method; s2, performing thermal polymerization reaction on the yttrium-containing carbon nitride precursor under an inert gas condition to obtain a crude product; and S3, ultrasonically dispersing the crude product in a nitric acid solution for etching, and then washing and drying to obtain the yttrium monatomic in-situ co-doped carbon nitride Y-C-C3N4. The yttrium monatomic in-situ co-doped carbon nitride prepared by the method has high catalytic activity and high stability, and the photocatalytic reduction capacity of carbon dioxide is improved.

The invention discloses a preparation method of a polymer carbon nitride / tin sulfide (PCN (at) SnS2) heterojunction photoanode, which comprises the following steps of: constructing the PCN (at) SnS2 heterojunction photoanode in situ on a conductive substrate (FTO) by combining an electrochemical deposition method and a chemical vapor deposition method, adding anhydrous stannous chloride into ethanol for dissolving, spin-coating stannous ions on the surface of the conductive substrate, and oxidizing in an air atmosphere; the preparation method comprises the following steps: adding stannous sulfate and sodium citrate into deionized water, and stirring for dissolving; the prepared conductive substrate is used as a working electrode, and a tin film is deposited on the surface of the conductive substrate by adopting a three-electrode system; dicyandiamide, cyanuric acid and potassium thiocyanate are ground and mixed evenly and then put into a porcelain boat, and the conductive substrate deposited with the tin film is placed on the surface of the precursor and wrapped with aluminum foil; placing the porcelain boat in a tubular furnace, reacting in a nitrogen atmosphere, and cooling to room temperature to form PCN-coated SnS2 on the surface of the FTO. The method improves the problems of insufficient light absorption range and high electron-hole recombination rate of the polymer carbon nitride material, and has the advantages of simplicity, controllability and the like.

The invention relates to a high-performance flame-retardant nylon 6 and a preparation method thereof. The high-performance flame-retardant nylon 6 comprises caprolactam, cyanuric acid, cyanuric acid, a caprolactam hydrolysis ring-opening polymerization initiator, a polymer structure regulator, an impact modifier, and a flame-retardant dispersant. During the caprolactam hydrolysis ring-opening polymerization process, melamine and cyanuric acid are added as two raw materials to participate in the chemical reaction of nylon 6 molding and are connected to the molecular chain of nylon 6. A polymer regulator and an anti-modification impact agent are further added to prepare high-performance flame-retardant nylon 6 with UL94V-0 flame retardancy, better impact strength, excellent tensile properties, and lower cost in a one-step process.

The application discloses oligomerization degree carbon nitride nanosheet containing partial supramolecular chains and a preparation method and application of photocatalytic decomposition of water to simultaneously produce hydrogen and oxygen, and the preparation method comprises the following steps: adding melamine and cyanuric acid into a solvent, stirring after ultrasonic treatment, and drying to obtain supramolecular precursor powder; and calcining the supramolecular precursor powder to obtain oligomerization degree carbon nitride containing partial supramolecular chains. The application retains partial supramolecular oxygen-containing structures to optimize adsorption and dissociation of oligomerization degree carbon nitride nanosheet and water molecules at a reaction liquid interface, realizes high H and OH enrichment of a local environment, and promotes performance improvement of photocatalytic complete decomposition of water.

The invention provides a cyanuric acid-containing halamine / quaternary ammonium salt copolymerization modified antibacterial material and application, and relates to the technical field of antibacterial materials. 1-allyl-s-triazine-2. 4.6-triketone potassium salt is synthesized from the cyanuric acid-containing halamine / quaternary ammonium salt copolymerization modified antibacterial material through nucleophilic substitution; the preparation method comprises the following steps: grafting a chlorinated halamine / quaternary ammonium salt copolymer to 3-chloropropyltrimethoxysilane pretreated natural fiber, copolymerizing the modified fiber and dimethyl ethyl methacrylate through continuous steps, reacting in ethanol with alkyl bromide, and substituting in a disinfectant to obtain the chlorinated halamine / quaternary ammonium salt copolymer modified material. The cyanuric acid-containing halamine / quaternary ammonium salt copolymerization modified antibacterial material prepared by the invention can quickly and efficiently kill escherichia coli and staphylococcus aureus, and has good recovery and regeneration capacity, ultraviolet radiation resistance and self-cleaning capacity.

The invention discloses a preparation method and application of a shape-controllable high-performance carbon wave-absorbing material. The invention belongs to the technical field of wave-absorbing materials. The invention aims to solve the technical problems that the impedance matching characteristic and the attenuation characteristic of the existing pure carbon absorbent are unbalanced and the effective absorption frequency band is limited. The method comprises the following steps: firstly, under a heating condition, respectively dissolving melamine and cyanuric acid in deionized water or an ethanol water solution, then dropwise adding a melamine solution into a cyanuric acid solution, and heating and stirring for reaction to obtain a hydrogen bond organic framework; and adding the hydrogen bond organic framework into an absolute ethyl alcohol solution of phenolic resin, stirring for reaction, and calcining to obtain the carbon wave-absorbing material. The method is simple in process and low in cost. The obtained wave-absorbing material has excellent electromagnetic wave absorption performance, and almost covers all X and Ku wave bands. And the application requirements of thinness, lightness, width and strength are met.

The invention discloses a chlorine-nitrogen co-coordinated monatomic zirconium adsorbent and application thereof in selective defluorination of high-salinity wastewater, and belongs to the technical field of fluorine-containing wastewater treatment. The preparation method comprises the following steps: self-assembling melamine and cyanuric acid to obtain supramolecules, ball-milling the supramolecules and zirconium chloride, and pyrolyzing twice to obtain the chlorine-nitrogen co-coordinated monatomic zirconium adsorbent. According to the adsorbent, strong electrostatic repulsion is applied to oxygen-containing acid radicals through electronegative nitrogen ligands, and strong coordination is applied to fluorine ions through electropositive zirconium atoms, so that selective capture of low-concentration fluorine ions in high-salinity wastewater is realized. Compared with a traditional adsorbent, the prepared adsorbent has the advantages of being high in fluorine removal capacity, high in salt tolerance and the like, can overcome the defects that a conventional chemical precipitation method, a coagulation method and a flocculation method are large in agent dosage, high in hazardous waste yield, high in treatment cost and the like, and has a wide application prospect.

The invention belongs to the technical field of polyurethane, and provides a vibration reduction and isolation polyurethane elastic backing plate capable of filtering low-frequency vibration and a preparation method of the vibration reduction and isolation polyurethane elastic backing plate. The polyol component is prepared from 50 to 70 parts of polyether polyol I, 20 to 30 parts of polyether polyol II, 5 to 8 parts of chain extender, 0.2 to 0.5 part of water, 0.2 to 0.5 part of modified boron nitride nanosheet, 1 to 1.5 parts of foam stabilizer and 0.4 to 0.6 part of catalyst; the isocyanate component is carbodiimide modified MDI (methylene diphenyl diisocyanate); according to the modified boron nitride nanosheet, melamine and cyanuric acid are used for performing surface modification on the boron nitride nanosheet. The modified boron nitride nanosheets can be uniformly dispersed in a polyurethane raw material, so that the composite nanosheets can be kept in a relatively uniform distribution state in an elastomer subjected to pouring, foaming and forming.

The invention discloses a cyanuric acid wastewater resource utilization treatment method, and relates to the technical field of organic wastewater treatment.The cyanuric acid wastewater resource utilization treatment method is characterized by comprising the steps that the pH value and salt concentration of cyanuric acid-containing wastewater are adjusted, a precipitation reaction is performed at normal temperature till solid-liquid separation is performed, clear liquid and sodium cyanurate filter residues are obtained, and the sodium cyanurate filter residues are recycled; and carrying out suction filtration treatment on the clear liquid by using special resin to obtain suction filtration produced water, and treating the special resin subjected to suction filtration treatment by using regenerated liquid flow to obtain regenerated waste liquid and recycling the regenerated waste liquid. The method has the effects that sodium cyanurate is efficiently recycled, and a high-salt matrix is synchronously constructed to directly meet the requirements of ionic membrane raw materials; the special resin is high in adsorption capacity and regeneration efficiency, and regenerated waste liquid is recycled; the total nitrogen removal rate and the TOC removal rate are high after deep treatment of the electro-catalysis process, and the energy consumption is remarkably reduced compared with that of a traditional process; the resource utilization treatment method is free of secondary pollution, and the treatment cost is remarkably reduced compared with that of a traditional process.

The invention relates to an environment-friendly gold leaching agent and a gold leaching method, and belongs to the technical field of gold leaching. The environment-friendly gold leaching agent comprises sodium cyanurate and guanidine salt. The gold leaching agent provided by the invention has a good gold leaching effect, is high in gold selectivity, does not contain traditional highly toxic sodium cyanide, is small in environmental pollution, and is green and environment-friendly.