48 results about "Isocyanuric acid" patented technology

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The utility model relates to tail gas purification technical field especially is a cyanuric acid synthetic reaction tail gas purification device, including the box, be provided with filter equipment on the box and be used for tail gas filtration, filter equipment includes: installation component, including the frame fixed in the inside of box, the front of upper and lower both ends of frame all is seted up and is inserted to install the composite catalytic filter core in the inside of frame, fixed component, including the fixed frame of installation in the inside front of frame, the inside intermediate rotation of fixed frame is installed with gear, the both ends of fixed frame inside left and right are all fixed with guide rod, the sliding installation of sleeve of guide rod is equipped with rack, the fixed plug rod is equipped with on the rack, the other end of plug rod is fixed with the bolt and is matched with the jack, the spring of sleeve installation is equipped with on guide rod, the front end fixed of gear has the knob, through fixed component and fix the composite catalytic filter core in installation component, significantly shorten the composite catalytic filter core replacement time, improve equipment operation efficiency.

The application discloses a kind of SBS modified asphalt based on TAIC-MMA copolymer regeneration and preparation method thereof, belong to road engineering material field, include: S1: after aging asphalt is preheated at 135 ℃, under the first shear condition, incorporate ESO, continue 10-15min to induce nucleophilic ring-opening reaction of epoxy group in ESO and carbonyl in aging asphalt;S2: continue to incorporate TAIC / MMA mixture under the second shear condition, after stirring at 135 ℃ for 20 minutes, initiator BPO is added, continue to stir to make the free radical produced by decomposition of BPO initiate in-situ copolymerization and dynamic crosslinking reaction of TAIC and MMA;S3: the mixture obtained in S2 is carried out heat swelling at 70 ℃, namely obtained.The application uses ESO as colloidal stabilizer, uses triallyl isocyanurate as the crosslinking agent of SBS network structure reconstruction, uses the ester group side chain in MMA to enhance the interfacial compatibility with asphalt matrix by steric hindrance effect, by molecular level synergistic effect, finally realize the comprehensive promotion of aging asphalt cement rheological property, durability and mechanical property.

The application relates to the technical field of solid electrolytes, in particular to a gel polymer electrolyte and a preparation method and application thereof, the preparation method of the gel polymer electrolyte comprises the following steps: S1, mixing polyethylene glycol diacrylate, N,N'-bis(acryloyl)cystamine and tris(2-hydroxyethyl)isocyanuric acid triacrylate in a protective atmosphere to obtain a polymer monomer mixture, then placing the polymer monomer mixture and an initiator in a lithium-based electrolyte, stirring, and obtaining a precursor solution; S2, solidifying the precursor solution to obtain the gel polymer electrolyte. The preparation method provided by the application is simple in process, raw materials are easy to obtain, and the method is easy to put into large-scale production. Meanwhile, the gel polymer electrolyte prepared has good mechanical properties and high room-temperature ionic conductivity.

This invention discloses a low-allergenic, high-activity powder coating curing agent and its preparation method, relating to the field of powder coating technology. The preparation method includes: mixing isocyanuric acid, epichlorohydrin, and an addition reaction catalyst including a phase transfer catalyst to perform an addition reaction; subsequently adding a base to perform a ring-closure reaction; allowing the mixture to stand and separate into layers to obtain a lower crude product; subjecting the lower crude product to vacuum distillation to obtain a distilled product; adding a solvent to the distilled product, stirring to dissolve, and then adding hydrogenated vegetable oil to form a coated crystallization system; followed by cooling crystallization, separation, and drying to obtain the final product. This invention, through the combination of addition ring closure, vacuum distillation, and in-situ oil phase crystallization coating, not only suppresses side reactions at the source and deeply removes harmful residues, significantly reducing the free epichlorohydrin residue in the finished product and almost completely eliminating skin and respiratory sensitization toxicity; but also effectively stabilizes the single-crystal regular crystal form, significantly narrows the melting range, and greatly enhances the activity of the curing agent.

The application discloses a kind of TGIC crosslinking regulation amino-silica distribution composite high-temperature proton exchange membrane and preparation method thereof, the composite high-temperature proton exchange membrane includes polybenzimidazole (OPBI), polyvinylpyrrolidone (PVP), amino-silica (NH2-SiO2), isocyanuric acid triglycidyl ester (TGIC). By TGIC crosslinking, NH2-SiO2 is uniformly anchored in OPBI polymer network, effectively prevent its agglomeration.PVP as a compatibilizer, improve organic / inorganic interface.The composite high-temperature proton exchange membrane has high mechanical strength, excellent phosphoric acid retention capacity, high proton conductivity and low swelling property.The preparation method of the application includes the preparation of amino-silica, solution blending, casting film and crosslinking and the like steps, simple process, suitable for large-scale production.The prepared composite high-temperature proton exchange membrane is suitable for high-temperature proton exchange membrane fuel cell, can significantly improve cell performance and life.

This invention provides a method for preparing a carbon-doped carbon nitride photocatalyst, comprising the following steps: (1) melamine, cyanuric acid, and 2,4,6-triaminopyrimidine are mixed in a solvent, ultrasonically dispersed, and stirred for 12–36 h. The mixture is then washed, centrifuged, and dried. After grinding and sieving, a solid supramolecular precursor is obtained. (2) The solid supramolecular precursor obtained in step (1) is placed in air, heated to 300°C–500°C, and calcined for 2–6 h to form a mixture of carbon-doped melamine, cyanuric acid, and their oligomers. (3) The mixture obtained in step (2) is thoroughly mixed with molten salt, calcined at 500°C–600°C for 2–6 h, cooled, and thoroughly washed with deionized water to remove the mixed salt. The solid residue is separated and dried to obtain the carbon-doped carbon nitride photocatalyst. The prepared carbon-doped carbon nitride photocatalyst is simple to synthesize, structurally stable, and exhibits excellent separation and migration efficiency of photogenerated carriers, as well as excellent photocatalytic hydrogen peroxide production performance.

This invention discloses a nano-oxygen barrier functional masterbatch for the outer surface of packaging bottles and its preparation method, belonging to the field of polymer packaging material technology. The method involves first homogenizing and ultrasonically dispersing nisin, glycerol, montmorillonite K10, and silver nanoparticles in an aqueous phase, then adding nanocellulose to obtain a hybrid oxygen barrier suspension. Next, polylactic acid, polypropylene carbonate, and triglycidyl isocyanate are melted and laterally injected into the suspension. The mixture is then subjected to twin-screw extrusion, vacuum devolatilization, and granulation to obtain the masterbatch. This masterbatch can form an oriented "brick-and-mortar" barrier structure in the matrix, enhancing interfacial bonding and the stability of the nano-silver, significantly improving the oxygen barrier, moisture barrier, peel strength, and long-lasting antibacterial properties of the packaging outer surface.

This invention discloses a highly efficient method for synthesizing cyanuric acid in the field of green chemistry and chemical engineering. The method uses urea as a raw material and reacts it in a decahydronaphthalene solvent under the catalysis of a phosphotungstic acid-confined three-dimensional ordered macroporous alumina solid acid catalyst. Specifically, urea, solvent, and catalyst are mixed and heated under nitrogen protection. After cooling, filtration, and solvent washing, the resulting filter cake is separated from the crude product by stirring with hot water. The separated catalyst is dried and can be recycled. The filtrate containing the product is cooled, crystallized, filtered, washed, and dried to obtain high-purity cyanuric acid. The catalyst used in this method is prepared using a template method and confinement technology, exhibiting a stable structure and significantly inhibiting the loss of active components. This invention features a simple and efficient process, easy catalyst recovery and recycling, and high product yield and purity, demonstrating promising prospects for industrial application.

The utility model provides a trichloro isocyanuric acid production is with chlorine leakage detection device relates to chlorine leakage detection field, this trichloro isocyanuric acid production is with chlorine leakage detection device, including the connecting cover of setting in the movable component connecting gap place of chlorine passing, the inside of connecting cover one end is provided with the sealing washer of covering movable component, and one of sealing washer is provided with the air inlet hole, and the one end of connecting cover is provided with the communicating pipe, and the one end of communicating pipe is connected and has the connection main pipe of through in the far -side of connecting cover. This trichloro isocyanuric acid production is with chlorine leakage detection device, through setting up the connecting cover setting in the movable component connecting gap place of device, starts the air extraction unit and passes the air extraction through the air inlet hole, and the gas is detected through the chlorine detection unit, when detecting that there is chlorine, it is explained that the gap exists leakage, and the electromagnetic tee joint is matched and exports the gas to the chlorine processing unit and handles, through such setting can detect chlorine leakage.

The application discloses a nylon composite material, which comprises the following components in parts by weight: aliphatic nylon 60-80 parts; MCA flame retardant 15-35 parts; polyethylene glycol 5-10 parts; and polyether block amide 4-10 parts. The MCA with specific free cyanuric acid content is used in the application, and the MCA generates inert gas due to the high temperature generated by an electric arc in the IPT test, which is beneficial to the rapid outward diffusion of the electric arc. Meanwhile, the polyether block amide as a charge dissipating agent can reduce the electric arc energy and guide the rapid diffusion of the electric arc. Meanwhile, the introduction of the polyethylene glycol can improve the water absorption of the nylon composite material, and the electric arc diffusion is synergized, so that the IPT is further improved. Meanwhile, the nylon composite material has a flame retardancy of 0.8mm V-0.

The application discloses a kind of transparent environmental protection intrinsic flame-retardant epoxy resin material and preparation method and application thereof.The intrinsic flame-retardant epoxy resin material is prepared by high-temperature melting method according to certain proportion by isocyanuric acid triglycidyl ester and dicarboxylic acid, acid anhydride or diacid ester reaction.The obtained intrinsic flame-retardant epoxy resin material flame-retardant function is mainly given by isocyanurate ring, with it as the main structure of material, can make material have excellent thermal stability, mechanical property and halogen-free flame-retardant performance;Flexible fatty chain introduced by curing agent and ester group produced by reaction, so that the material has excellent toughness and environmental protection degradable performance;The application combines bulk melting reaction and casting forming process, and can prepare highly transparent and arbitrary shape, with intrinsic halogen-free flame-retardant function, environmental protection degradable high-performance thermosetting resin, which can be used as environmental protection flame-retardant organic glass in building, transportation, aviation, home, electronic and other industries, and has wide application prospect.

The application belongs to the technical field of methyl red azo dye purification, and discloses a methyl red azo dye adsorbent with good adsorption performance on methyl red azo dye, 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 liquid; under stirring, in-situ growth of a supramolecular aggregate is realized and the supramolecular aggregate is coated on the surface of the biomass carbon powder to form a solid-liquid mixture; the solvent in the solid-liquid mixture is removed, and the supramolecular composite precursor is obtained through drying; (3) pressure forming a mixture of the supramolecular composite precursor, a silicate clay mineral and a nickel salt into a green body; and (4) performing heat treatment on the green body to obtain the methyl red azo dye adsorbent.

A polymer composition comprising:a) an ethylene-based copolymer;b) ≥0.1 wt. % and ≤5.0 wt. %, preferably ≥0.1 wt % and ≤1.0 wt %, of a crosslinking agent;c) ≥0.05 wt. % and ≤5.0 wt. %, preferably ≥0.05 wt % and ≤0.5 wt %, of a coupling agent, preferably a silane coupling agent;d) ≥0.05 wt. % and ≤5.0 wt. %, preferably ≥0.05 and ≤1.0 wt %, of a co-agent, preferably a phosphate-moiety, isocyanurate-moiety or cyanurate-moiety containing co-agent;wherein all wt % are based on the total weight of the polymer composition; andwherein the ethylene-based copolymer has a vinyl unsaturation content of ≥6.0 per 105 carbon atoms, preferably ≥7.0 per 105 carbon atoms, when determined in accordance with ASTM D6248-98 (2012).

The application discloses a kind of supermolecule self-decomposition template synthesis multi-element doped diameter adjustable carbon-based micropipe method, belong to carbon micropipe preparation technical field, operation steps are as follows: (1) respectively preparation containing melamine (M) or 2,4,6-triaminopyrimidine (TAP) solution A and containing cyanuric acid (CA) or trithiocyanuric acid (TCA) solution B;(2) A liquid drop is added to B liquid, and the supermolecule precursor of M-CA, M-TCA, TAP-TCA is obtained;(3) 2-methylimidazole and sulfur, boron, phosphorus, fluorine and other element compounds are added in the solution of precursor, and after heating and drying, the precursor composite with different diameters is obtained by drying in oven for 24h;(4) it is obtained by calcining at 500-700 DEG C for 1-2h under argon atmosphere;In the application, the synthesized supermolecule as a template has the advantages of self-decomposition, adjustable diameter, and can be partially converted into carbon-based materials;During preparation, adding appropriate drugs realizes multi-element doping in one step, and the method has the advantages of simplicity, low cost and large-scale preparation.

The application discloses an isocyanurate compound and a preparation method and application thereof, belongs to the technical field of battery electrolyte additives, and has the structure shown in formula 1. The preparation method is that a fluorine-containing iodoalkane shown in formula 2 is reacted with diallyl isocyanurate under the action of a catalyst DBU, the reaction temperature and the reaction time are controlled, a compound shown in formula 1 is generated, and post-treatment is carried out on the reaction liquid to obtain the isocyanurate compound. The application fills the technical gaps of the prior art in the aspects of molecular design, efficient preparation method and practical application effect of the fluorine-containing isocyanurate compound, and through systematic research and innovation from the aspects of molecular design, a synthesis route, a preparation process and application performance, a novel and effective solution is provided for solving technical problems such as interface instability and electrolyte oxidation decomposition of high-voltage lithium ion batteries, and a material foundation is laid for research and development of high-end battery materials.

An aqueous UV-curable dispersion at least includes a reaction product composed of a) at least one polyisocyanate having an average isocyanate functionality of at least 2.2, of which preferably at least one polyisocyanate is an oligomeric polyisocyanate having urethane, biuret, allophanate, iminooxadiazinedione and / or isocyanurate structural units, b) at least one monohydroxy-functional compound containing methacryloyl groups, c) at least one component which contains non-ionically hydrophilic groups and has at least one further isocyanate-reactive group, and d) at least one diol, triol, diamine and / or triamine, the reaction product having no ionogenic or ionically hydrophilic groups.

The application belongs to the technical field of cables, and particularly relates to a high-torsion-resistance and low-smoke PVC / TPU composite cable material and a preparation method thereof. The PVC and polyether TPU are used as main components of the cable material, the compatibility of the PVC and the polyether TPU is improved by adding a compatibilization aid, the mechanical strength of the cable material caused by phase separation is inhibited, the aluminum phosphate is uniformly loaded on the surface of nano silicon dioxide, the flame-retardant and smoke-suppressing agent is formed by polymerization of hexachlorocyclotriphosphazene and cyanuric acid to improve the flame-retardant performance of the cable material, the toughening filler is prepared by mixing fumed silica, cerium oxide and modified montmorillonite, the nano sheet structure can effectively block the penetration of water molecules to improve the water resistance of the cable material, and when the cable material is subjected to torsion deformation to generate microcracks, the toughening filler can prevent the rapid expansion of the cracks to improve the torsion resistance of the cable material. The composite cable material prepared by the application has excellent low-temperature resistance and water resistance, and can realize low-temperature torsion without damage.

This invention relates to a branched polyacrylamide flocculant and its preparation method. The raw materials for preparing the polyacrylamide flocculant include, by parts: 170-280 parts acrylamide crystals, 5-25 parts methacrylamide propyltrimethylammonium chloride, 30-95 parts cationic monomer, 0.1-0.7 parts triallyl isocyanurate, 2-15 parts perfluoroalkyl acrylate monomer, 0.3-1.5 parts crosslinking agent, 0.5-3 parts co-solvent, 1-6 parts allylamine, 1.5-7.5 parts polyether monomer, 550-670 parts water, 0.05-1.8 parts chain transfer agent, and 0.001-0.5 parts mixed initiator. The branched polyacrylamide flocculant of this invention has advantages such as high flocculation efficiency, high floc strength, strong anti-interference ability, and wide applicability. It can effectively improve separation efficiency and separation quality, and can be mass-produced, thus having significant industrial application value.

This invention discloses an iron-carbon co-modified graphitic carbon nitride-based catalytic material, its preparation method, and its application. The invention involves dispersing melamine and acetamide in ethanol and stirring for 12 hours to obtain solution A; dispersing cyanuric acid and FeCl3·6H2O in ethanol and stirring for 12 hours to obtain solution B; mixing solutions A and B and stirring thoroughly; and then hydrothermally reacting the mixture at 180°C. The reaction product is washed until neutral, centrifuged, and dried to obtain a Fe / C-C3N4 precursor; the precursor is transferred to a tube furnace and calcined at 550°C for 2 hours to obtain the iron-carbon co-modified graphitic carbon nitride-based catalytic material. This catalytic material can be used for the photocatalytic degradation of antibiotic pollutants in water. This invention features a simple preparation process, low raw material costs, good environmental compatibility, and can efficiently and deeply purify antibiotic pollutants in water.

This invention provides a biochar-based Fe single-atom catalyst, its preparation method, and its application. The preparation method includes the following steps: calcining shrimp shells under a nitrogen or inert gas atmosphere to obtain biochar, followed by acid washing, cleaning, and drying to obtain biochar SO; dissolving melamine and cyanuric acid in DMSO to obtain solution A and solution B; dissolving ferric citrate in solution A and then adding it to solution B; stirring and reacting; filtering, washing, and drying to obtain supramolecular polymer MCA; mixing the obtained SO and MCA at a mass ratio of 1:0.25~1, grinding, and then co-pyrolyzing at 450-750℃ for 1-5 hours under a nitrogen or inert gas atmosphere, followed by cooling. The technical solution of this invention exhibits high catalytic activity, can efficiently catalyze the rapid degradation of aniline by PMS, is low in cost, has minimal environmental impact, and is safe, showing great application potential in the treatment of aniline-related wastewater.

A multifunctional detection test kit includes a water test paper including a base and a plurality of test modules provided on different test zones of the base. Each of the test modules is configured to detect one of pH value, total alkalinity, cyanuric acid, total chlorine, bromine, free chlorine water hardness, lead, iron, copper, nitrite, nitrate, MPS, nickel, and phosphate.

The application discloses a radiation crosslinking polyamide composite material and a preparation method and application thereof. The radiation crosslinking polyamide composite material comprises the following components in parts by weight: 50-70 parts of polyamide resin, 8-15 parts of melamine cyanurate, 0.5-5 parts of a composite crosslinking agent, 0.7-2.5 parts of a light stabilizer, 0.7-2.5 parts of an ultraviolet absorber and 0.05-2 parts of an antioxidant. The composite crosslinking agent comprises a first crosslinking agent and a second crosslinking agent in a mass ratio of (0.22-3.2):1. The first crosslinking agent is at least one of an isocyanuric acid allyl ester crosslinking agent and a melamine cyanurate allyl ester crosslinking agent. The second crosslinking agent is at least one of a vinyl crosslinking agent and an acrylic ester crosslinking agent. The application adds the specific composite crosslinking agent into the polyamide resin containing the melamine cyanurate flame retardant, and then crosslinks the polyamide resin through the radiation method, so that the prepared radiation crosslinking polyamide composite material still has good flame retardant performance and a high glowing filament temperature after long-time light aging.

This invention discloses a bromine / cobalt co-doped hollow rod-shaped carbon nitride photocatalyst and its preparation method, belonging to the technical field of photocatalytic materials and CO2 resource utilization. The invention involves the self-assembly of melamine and cyanuric acid to form a supramolecular rod-shaped precursor, followed by thermal polymerization to obtain hollow rod-shaped carbon nitride (RCN). Using RCN as a support and cobalt nitrate and hexadecyltrimethylammonium bromide as doping sources, a hydrothermal reaction is then performed to prepare the bromine / cobalt co-doped hollow rod-shaped carbon nitride Br / Co-RCN photocatalyst. This catalyst exhibits a hollow rod morphology, a large specific surface area, and uniform doping of bromine and cobalt within the carbon nitride framework. The catalyst of this invention demonstrates excellent photocatalytic CO2 reduction performance under simulated sunlight, achieving a CO yield of 130.06 μmol·g. ‑1 ·h ‑1 Furthermore, the preparation process is simple, the conditions are mild, and the reproducibility is good, showing promising application prospects.

A prepreg from which a fiber-reinforced plastic having improved strength in a direction perpendicular to the fiber direction can be obtained, and a fiber-reinforced plastic having improved strength in the direction perpendicular to the fiber direction. The prepreg contains a matrix resin composition and carbon fibers. The matrix resin composition contains component (A) an isocyanuric acid derivative having a glycidyl group, represented by Formula (1) where X1 to X3 each represent a glycidyl group, an allyl group, an alkyl group, or a hydrogen atom, and at least one of X1 to X3 is a glycidyl group), component (B) a curing agent, component (C) a compound having a (meth)acryloyl group but no glycidyl group, and component (D) an epoxy resin excluding the component (A).

The application discloses a graphite carbon nitride-based Zn monatomic photocatalyst, and a preparation method and application of the photocatalyst.The graphite carbon nitride-based Zn monatomic photocatalyst is prepared by using thiourea and cyanuric acid as a nitrogen source and zinc hydroxide as a metal source through a one-step pyrolysis method.The prepared photocatalyst has better performance, lower preparation cost, simple steps and no solid or liquid waste in the synthesis process.Further, the catalyst has good degradation effect on phenol, and the highest degradation rate can reach 100%.

The present invention relates to a polyisocyanate composition comprising at least one cross-linked cis-tetrahydrofuran-2,5-diyl-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and / or biuret structure, and / or at least one cross-linked trans-tetrahydrofuran-2,5-diyl)-dimethylene unit and at least one isocyanurate, iminooxadiazinedione, allophanate, urethane, urea, uretdione, oxadiazinetrione, carbodiimide, thiourethane, thioallophanate and / or biuret structure.