36 results about "Bis-triazine" patented technology

The invention discloses a triazine biphenyl compound, a composition, a cured product as well as a preparation method and application of the triazine biphenyl compound, the composition and the cured product. The compound is phenolic resin with a triazine biphenyl structure obtained through condensation polymerization of p-cyanobiphenol; the phenolic resin respectively reacts with an epichlorohydrin compound and an acyl chloride compound to obtain epoxy resin and active ester with a triazine biphenyl structure, and the epoxy resin and the active ester can be self-cured or cured under the action of an imidazole accelerator; in the preparation process, triazine ring (containing nitrogen) is introduced as a node, trifunctional epoxy resin with a rigid aromatic structure as an arm and an active ester curing agent (the same skeleton) are prepared into a thermosetting cross-linked network by adopting a non-polar cross-linking scheme, and a three-dimensional network intrinsic microporous structure is formed through in-situ cross-linking regulation and control of a rigid long-arm branched unit. Further, the bottlenecks of low dielectric property, high temperature resistance, flame retardance and the like are broken through, and the cured material has the characteristics of excellent flame retardance, high temperature resistance and low dielectric property.

The invention provides a preparation method of a triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst, which comprises the following specific steps: (1) placing mixed powder of melamine and 2, 4, 6-triaminopyrimidine in air, heating to 300-500 DEG C, and calcining for 2-6 hours to form a mixture of carbon-doped melamine and oligomer thereof; (2) placing the mixture obtained in the step (1) in water at 60-70 DEG C, performing ultrasonic dispersion, then slowly cooling to room temperature, oscillating for 12-36 hours, removing moisture through rotary evaporation, and further drying to obtain a solid supramolecular precursor; and (3) fully mixing the solid supramolecular precursor obtained in the step (2) with molten salt, calcining at 500-600 DEG C for 2-6 hours, cooling, fully washing with deionized water, removing mixed salt, separating solid residues, and drying to obtain the triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst THCNx-t. The prepared carbon-doped carbon nitride photocatalyst is uniform in homojunction distribution, and has the characteristics of excellent photochemical properties, high photon-generated carrier separation efficiency and excellent photocatalytic benzyl alcohol selective oxidation performance.

The invention discloses a triazine desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification. The triazine desulfurizer is mainly prepared from the following raw materials in percentage by weight: 20 to 50 weight percent of triazine derivative, 10 to 15 weight percent of sterically hindered amine, 3 to 7 weight percent of stabilizer, 1 to 3 weight percent of synergist, 0.5 to 1.5 weight percent of penetrant, 0.5 to 1.5 weight percent of inhibitor, 1 to 2 weight percent of additive and the balance of water, the preparation method of the triazine derivative comprises the following steps: adding 2-(diphenylphosphino) ethylamine into a toluene solvent, adding a paraformaldehyde aqueous solution in batches under a stirring condition, and reacting for 2-8 hours to obtain the triazine derivative. According to the triazine desulfurizer and the preparation method thereof provided by the invention, the triazine derivative and the sterically hindered amine are taken as a host, and the stabilizer, the synergist, the penetrant, the inhibitor and the assistant are compounded, so that the scaling trend of the triazine desulfurizer in an oil and gas well can be slowed down, the dissolution rate of hydrogen sulfide and the mass transfer rate in a solution are increased, and the desulfurization reaction is promoted; the desulfurization effect and the desulfurization rate are improved, and meanwhile, a very good scale inhibition effect is also achieved.

The invention discloses a preparation method of a triazine desulfurizer. The method comprises the following steps: 1, adding primary amine into a three-neck round-bottom flask, and stirring; 2, slowly dropwise adding a formaldehyde aqueous solution in a stirring state, carrying out a constant-temperature reaction, and carrying out reduced pressure distillation purification to obtain a triazine desulfurizer main body; and 3, uniformly stirring and mixing the triazine desulfurizer main body, peracetic acid, polyethylene glycol and ethylenediamine to obtain the triazine desulfurizer. The triazine desulfurizing agent is prepared by compounding the triazine desulfurizing agent main body with the peracetic acid, the polyethylene glycol and the ethylenediamine, so that hydrogen sulfide in a sulfur-containing system is effectively removed, organic sulfur benzothiophene substances which are difficult to remove are converted into sulfoxide and sulfone which are easy to remove, and the compatibility of the triazine desulfurizing agent and the sulfur-containing system is improved; therefore, the desulfurization rate is greatly improved, the sulfur content in a sulfur-containing system is remarkably reduced, and the method is suitable for the field of desulfurization.

The invention relates to the technical field of materials, and discloses a high-temperature-resistant cyano resin composite material and a preparation method thereof.The high-temperature-resistant cyano resin composite material is prepared by adding melamine resin, cyano-containing modified benzoxazine and glass fibers into a double-screw extruder, conducting melt blending, extruding master batches and then conducting injection molding through an injection molding machine. A quaternary ammonium salt group in cyano-containing modified benzoxazine has a better antibacterial effect, a triazine group in the cyano-containing modified benzoxazine has a better high-temperature-resistant effect, carboxyl in N-methyl imino diacetic acid and hydroxyl in 2, 4-anilino-6-(phenol ethyl ester amine) s-triazine are subjected to an esterification reaction, and triazinyl N-methyl imino diethyl ester is obtained. Meanwhile, the substitution degree of triazinyl is improved, so that the temperature resistance effect is better; the sulfur element contained in the flame-retardant plastic has a good flame-retardant effect; wherein benzoxazine can form a heat-resistant phenolic resin structure at a high temperature, so that the flame retardant has a relatively good flame retardant effect.

The invention discloses a triazine benzene compound, a composition, a cured product and a preparation method and application of the triazine benzene compound, the composition and the cured product. The compound is phenolic resin with a triazine benzene structure obtained through condensation polymerization of cyanophenol. Respectively reacting the phenolic resin with an epichlorohydrin compound and an acyl chloride compound to obtain epoxy resin with a triazine benzene structure and active ester; in the curing process, triazine ring (containing nitrogen) is introduced as a node, trifunctional epoxy resin with a rigid aromatic structure as an arm and an active ester curing agent (the same skeleton) are prepared into a thermosetting cross-linked network by adopting a non-polar cross-linking scheme, and a three-dimensional network intrinsic pore structure is formed through in-situ cross-linking regulation and control of a rigid long-arm branched unit. Further, the bottlenecks of low dielectric, high temperature resistance, flame retardance, low heat release and the like are broken through, and the cured material has the characteristics of excellent flame retardance, high temperature resistance, low dielectric, high bending modulus, low heat release rate and linear thermal expansion coefficient performance.

The invention relates to the technical field of flame-retardant cutting agents, in particular to a preparation method and application of an environment-friendly flame-retardant cooling agent. Comprising the following steps: 1, carrying out an esterification reaction on 2, 2, 2-trichloroethanol and 2, 4, 6-tri (aminocaproic acid)-1, 3, 5-triazine to obtain a triazine polycarboxylic acid ester; (2) grafting the triazine polycarboxylic acid ester and DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) to obtain triazine polycarboxylic acid ester-DOPO; (3) under an alkaline condition, carrying out a hydrolysis reaction on the triazine polycarboxylic acid ester-DOPO, and then carrying out acidizing treatment to obtain triazine polycarboxylic acid-DOPO; step two, (1) reacting hydroxyl-terminated fluorosilicone oil with epoxy chloropropane, and epoxidizing the hydroxyl-terminated fluorosilicone oil to obtain epoxy-terminated fluorosilicone oil; (2) reacting the epoxy-terminated fluorosilicone oil with diethylenetriamine to obtain hyperbranched hydrophilic fluorosilicone oil; and 3, mixing the triazine polycarboxylic acid-DOPO, the hyperbranched hydrophilic fluorosilicone oil and other raw materials to obtain the environment-friendly flame-retardant coolant.

The invention discloses a triazine perfluoroether rubber secondary vulcanization atmosphere control method and a product thereof, the triazine perfluoroether rubber secondary vulcanization atmosphere control method comprises the following steps: S1, triazine perfluoroether rubber subjected to primary vulcanization is subjected to secondary vulcanization in an inert gas atmosphere, the moisture content in the inert gas atmosphere is less than 20 ppmv, and the product is subjected to secondary vulcanization; the vulcanization temperature is 275 to 295 DEG C; and S2, replacement air is introduced, passivation is conducted in the air atmosphere, then the triazine perfluoroether rubber product is obtained, and the passivation temperature ranges from 275 DEG C to 295 DEG C. The method solves the problem of unstable product performance caused by improper atmosphere control in the secondary vulcanization process of the triazine perfluoroether rubber, the compression deformation rate of the perfluoroether rubber product prepared by the method is less than or equal to 10%, and the perfluoroether rubber product can be used in the high-end sealing fields of semiconductors, aerospace and the like.

The invention relates to the technical field of nuclear medical radioactive waste treatment, and discloses a preparation method and application of a triazine modified collagenous fiber iodine adsorbent. The preparation method comprises the following steps: activating collagen fibers; and triazine modification: taking the activated collagenous fiber, adding water, triazine and a dialdehyde cross-linking agent, and stirring at 25-50 DEG C for 5-10 hours to obtain the triazine modified collagenous fiber iodine adsorbent. According to the application, the prepared triazine modified collagenous fiber iodine adsorbent is used for adsorbing radioactive iodine. According to the preparation method disclosed by the invention, triazine is grafted to the activated collagenous fiber through the Schiff base reaction of the dialdehyde cross-linking agent, and the collagenous fiber is endowed with a large number of N hybrid functional groups, so that the active sites of the obtained modified collagenous fiber adsorbent are remarkably increased, and iodine ions in iodine steam and a solution can be effectively adsorbed; the adsorbent can be used for adsorbing radioactive iodine in medical waste liquid and nuclear wastewater, the preparation method is simple, raw materials are wide in source and low in price, and industrialization can be achieved.

The invention discloses a synthesis method and application of a triazinyl cyclic boric acid phenyl ester coupling agent, and the triazinyl cyclic boric acid phenyl ester coupling agent is synthesized by the following method: taking diethanol amine, boric acid and toluene, stirring, heating, refluxing and separating water; adding phenol, refluxing and separating water, carrying out reduced pressure distillation to remove the solvent, and purifying with ethyl acetate to obtain an intermediate 1; taking cyanuric chloride, 4-aminobutyric acid and deionized water, stirring, and reacting at 0-5 DEG C; heating to 40-45 DEG C, reacting, carrying out suction filtration, carrying out reduced pressure distillation to remove the solvent, adding a proper amount of ethanol, stirring, and carrying out suction filtration to obtain an intermediate 2; and taking the intermediate 1, the intermediate 2, anhydrous sodium carbonate and DMF, stirring, carrying out reflux reaction, carrying out suction filtration, and removing the solvent under reduced pressure to obtain the triazinyl cyclic boric acid phenyl ester coupling agent. The invention also discloses a synthesis method and application of the triazinyl cyclic boric acid phenyl ester coupling agent. According to the triazinyl annular boric acid phenyl ester coupling agent provided by the invention, aminobutyric acid, a twelve-membered ring, a benzene ring and a triazine ring are introduced into molecules, so that steric hindrance and a conjugated system are increased, the molecular structure stability of the boric acid ester coupling agent is enhanced, the application effect is greatly improved, and the oil absorption value of heavy calcium carbonate powder is remarkably reduced.

The present invention provides a preparation method of a triazine derivative. The preparation method comprises the following steps: subjecting p-nitroaniline to a substitution reaction with compound A to form intermediate B; and subjecting intermediate B to a hydrogenation reduction alkylation reaction with compound C to obtain the triazine derivative. The above method provided by the present invention prepares the triazine derivative by a two-step method of substitution first and then hydrogenation reduction alkylation, which not only has a high product yield, but also greatly shortens the process flow. At the same time, this method effectively avoids the generation of by-products of disubstituted p-phenylenediamine in the traditional process, makes the product separation easy, greatly reduces the cost, has no pollution, has high product quality, and is easy to realize industrialization.

The invention discloses triazinyl COFs (Covalent Organic Frameworks), the triazinyl COFs take 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) triphenylamine and 2, 5-dihydroxy-1, 4-benzene dicarboxyaldehyde as construction units, and the triazinyl COFs are in a coralline shape. The invention also discloses a preparation method of the triazinyl COFs, and the preparation method comprises the following steps: uniformly mixing 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) triphenylamine, 2, 5-dihydroxy-1, 4-benzene dicarboxyaldehyde, N-methyl pyrrolidone and a catalyst, and carrying out a reaction to obtain the triazinyl COFs. The invention also discloses the triazinyl COFs and application of the triazinyl COFs prepared by the method in photocatalytic production of hydrogen peroxide. The invention also discloses a method for producing hydrogen peroxide by using water. The triazinyl COFs provided by the invention can greatly improve the efficiency of producing H2O2 by photocatalysis.

The invention discloses a spherical flower cluster 4, 4 ', 6, 6'-tetraazido hydrazine-1, 3, 5-triazine particle and a preparation method thereof.A one-step simple solvent-anti-solvent method is adopted, 4, 4 ', 6, 6'-tetraazido hydrazine-1, 3, 5-triazine is dissolved in an organic solvent, and a triazine solution is obtained; the method comprises the following steps: adding a triazine solution and a surfactant solution into water to obtain a turbid liquid; and filtering, washing and drying the turbid liquid to obtain the spherical flower cluster 4, 4 ', 6, 6'-tetraazido hydrazine-1, 3, 5-triazine particles. According to the invention, a solvent-anti-solvent crystal morphology regulation and control method is combined with the surfactant, and the adsorption effect of the crystal surface of the surfactant is utilized to inhibit the growth of the crystal on one hand, inhibit the coalescence of the crystal on the other hand, avoid the further agglomeration of the formed spherical flower cluster and promote the stable dispersion of the crystal. The spherical flower cluster TAHT prepared by the method is consistent in morphology, uniform in particle size and free of agglomeration, and the preparation method is simple and easy for industrial production.

The present application relates to a kind of covalent organic framework material COFs flame-retardant polyamide resin sheet, belong to flame-retardant technical field.The flame-retardant polyamide resin sheet includes the following component and mass percentage content: including the following component and mass percentage content: polyamide 60%~98%, MTM 2%~15%, antioxidant 1010 0.1%~1%And antioxidant 168 0.1%~1%;Flame-retardant polyamide resin sheet is triazine-based COFs material (MTM) High-efficiency flame-retardant effect, improve the char-forming of polyamide resin, reduce the heat release rate of matrix, smoke release amount, strive for more fire evacuation time;The flame-retardant polyamide resin provided by the present application has the advantages of less addition amount, simple preparation method, excellent mechanical property, efficient carbonization flame-retardant performance, low heat release rate and low smoke yield.

The application discloses a triazine-based COF, which is prepared from 4,4',4"-(1,3,5-triazine-2,4,6-triyl) triphenylamine and 2,5-dihydroxy-1,4-benzene dicarboxaldehyde as building units, and the triazine-based COF is in a coral shape. The application further discloses a preparation method of the triazine-based COF, which comprises the following steps: uniformly mixing 4,4',4"-(1,3,5-triazine-2,4,6-triyl) triphenylamine, 2,5-dihydroxy-1,4-benzene dicarboxaldehyde, N-methyl pyrrolidone and a catalyst, and performing reaction to obtain the triazine-based COF. The application further discloses application of the triazine-based COF and the triazine-based COF prepared by the method in photocatalytic production of hydrogen peroxide. The application further discloses a method for producing hydrogen peroxide by using water. The triazine-based COF can greatly improve the photocatalytic H2O2 production efficiency.

The invention provides a preparation method of a triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst, which specifically comprises the following steps: (1) placing a mixed powder of melamine and 2,4,6-triaminopyrimidine in air, heating the mixture to 300° C. to 500° C., and calcining the mixture for 2 to 6 hours to form a mixture of carbon-doped melamine and oligomers thereof; (2) placing the mixture obtained in step (1) in water at 60 to 70° C., ultrasonically dispersing the mixture, then slowly cooling the mixture to room temperature and oscillating the mixture for 12 to 36 hours, removing water by rotary evaporation, and further drying the mixture to obtain a solid supramolecular precursor; and (3) fully mixing the solid supramolecular precursor obtained in step (2) with a molten salt, calcining the mixture at 500° C. to 600° C. for 2 to 6 hours, cooling the mixture, and fully washing the mixture with deionized water to remove the mixed salt, separating the solid residue, and drying the mixture to obtain a triazine / heptazine homojunction structure carbon-doped carbon nitride photocatalyst THCN. x The prepared carbon-doped carbon nitride photocatalyst has uniform homojunction distribution, excellent photochemical properties, high efficiency of photogenerated carrier separation, and excellent photocatalytic selective oxidation performance of benzyl alcohol.

The invention discloses a method for photochemically preparing a triazinyl polymer / tin oxide composite material, and the photochemical preparation method of the triazinyl polymer / tin oxide composite material comprises the following steps: dissolving 3 wt% of stannous mono-sulphate and 3 wt% of sulfuric acid in deionized water, adding a triazine structure polymer, and dispersing to obtain a precursor solution; and irradiating the precursor solution with 254nm ultraviolet light at the light intensity of 12-20mW / cm < 2 > for 6-24 hours, centrifuging, and drying to obtain the triazinyl polymer / tin oxide composite material. According to the preparation method, SnO2 is generated by oxidizing Sn < 2 + > under the induction of ultraviolet light, and the SnO2 and the triazine structure polymer are compounded in situ to form the triazine structure composite material, so that the SnO2-based composite material has wide spectral response and high stability, and the preparation method is simple in process, green, environmentally friendly and suitable for the fields of industrial wastewater treatment and solar energy conversion.

The invention discloses a novel polysulfonamide composite nanofiltration membrane and a preparation method thereof, and belongs to the technical field of membrane separation. The method comprises the following steps: preparing a 2-chloro-4, 6-amino-[1, 3, 5]-triazine (CAT) amine monomer, cleaning an ultrafiltration base membrane, immersing the ultrafiltration base membrane in a CAT aqueous solution with a concentration of 2.0-10.0 g / L, adjusting the pH value of the solution to 8-13, immersing the ultrafiltration base membrane for 1-30 min, taking out the ultrafiltration base membrane, removing excess water on the surface of the ultrafiltration base membrane, immersing the ultrafiltration base membrane in an organic solvent containing a sulfonyl chloride organic monomer with a concentration of 3.0-15.0 g / L, carrying out an interface reaction, taking out the ultrafiltration base membrane after 5-20 min, washing the ultrafiltration base membrane, and drying the ultrafiltration base membrane. And performing post-treatment for 5-55 minutes at the temperature of 35-95 DEG C to obtain the triazine ring group polysulfonamide composite nanofiltration membrane. The prepared triazine ring amino polysulfonamide composite nanofiltration membrane has good separation performance and acid-resistant stability, and shows good application prospects.

The invention discloses a broad-spectrum sterilization and desulfurization integrated agent for oil field water treatment, which is characterized by comprising the following components in parts by weight: 20-30 parts of hydroxyl triazine derivative, 10-15 parts of quaternary ammonium salt bactericide, 5-10 parts of organic guanidine, 5-10 parts of surfactant, 10-20 parts of solvent and 30-40 parts of distilled water. The triazine derivative is an excellent desulfurizing agent, stable desulfurization reaction is guaranteed, the reaction process is rapid, and the selectivity is high; the trifluoromethylaniline is connected to triazine derivative molecules, so that the medicament can be effectively adsorbed on the surface of sulfate reducing bacteria, the capability of exchanging ions with the outside is reduced, the growth of the bacteria is inhibited, the bacteria are killed, and the sterilization effect is improved without influencing the sulfur removal effect.

The invention discloses a triazinyl organic molecular cage capable of being produced on a large scale and a synthesis method thereof, and relates to the technical field of organic materials, and the organic molecular cage is prepared from a bis / trifunctional compound and cyanuric chloride in an organic solvent under the catalytic action of a basic catalyst. The method comprises the following steps: accurately weighing an organic solvent and cyanuric chloride, and preparing an organic solvent solution of cyanuric chloride; the preparation method comprises the following steps: adding an accurately weighed bis / trifunctional compound and a basic catalyst into a reactor, slowly dropwise adding an organic solvent solution of cyanuric chloride while stirring under an ice-water bath condition, and stirring and reacting for 24 hours at 10-100 DEG C after dropwise adding; after the reaction is finished, performing suction filtration to obtain a triazine organic molecular cage crude product; and respectively washing the obtained crude product twice with methanol, dichloromethane and water, and carrying out vacuum drying at 40 DEG C for 4 hours to obtain a powdery triazinyl organic molecular cage product. The prepared organic molecular cage is low in cost, high in chemical stability, simple in production process, very high in operability and practicability, suitable for large-scale production and wide in application prospect.

The invention discloses a synthesis method of 2, 2 ', 2' '-(1, 3, 5-triazine-2, 4, 6-triyl) tri [5-(hexyloxy)-6-methyl] phenol, and belongs to the technical field of chemical preparations. The method for preparing 2, 2 ', 2' '-(1, 3, 5-triazine-2, 4, 6-triyl) tri [5-(hexyloxy)-6-methyl] phenol comprises the following steps: (1) taking 2-methyl resorcinol and halogenated normal hexane as raw materials, and carrying out monoetherification reaction under the action of a first catalyst to obtain an intermediate; and (2) taking the intermediate and trihalogenated s-triazine as raw materials, and carrying out ortho-alkylation reaction under the action of a second catalyst to obtain 2, 2 ', 2' '-(1, 3, 5-triazine-2, 4, 6-triyl) tris [5-(hexyloxy)-6-methyl] phenol, the 2, 2', 2 ''-(1, 3, 5-triazine-2, 4, 6-triyl) tris [5-(hexyloxy)-6-methyl] phenol prepared by the method provided by the invention has the advantages of high yield and few byproducts.

The invention provides a cross-linking agent for fracturing and a preparation method thereof, and belongs to the technical field of oilfield chemistry, and the preparation method comprises the following steps: uniformly mixing borax, glycerol, deionized water, sodium hydroxide and erythritol, and stirring at high temperature to obtain an organic boron cross-linking component; the preparation method comprises the following steps: uniformly mixing formaldehyde, methyl glyoxal and an acetic acid aqueous solution, dropwise adding the mixture into a 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) triphenylamine solution, and performing high-temperature reaction and purification to obtain a porous organic polymer; mixing the porous organic polymer with deionized water, carrying out ultrasonic treatment, adding dopamine, adjusting the pH value with a NaOH solution, carrying out a stirring reaction, and purifying to obtain a modified porous carrier; adding the modified porous carrier into deionized water for ultrasonic treatment, adding the organic boron crosslinking component, stirring at high temperature, and drying in vacuum to obtain the crosslinking agent for fracturing. The cross-linking efficiency of guanidine gum can be improved, and the effect of improving the temperature resistance of a fracturing fluid system is achieved.

The present application relates to the technical field of organic electroluminescence devices, in particular to an electron transport material, a preparation method thereof and an organic electroluminescence device. The electron transport material is selected from a compound shown in the following formula 1: the electron transport material takes 9-phenyl-9-dibenzofuranyl fluorene ring as a mother nucleus, the fluorene ring is bonded to a cyanophenyl-substituted triazine group through a chemical bond or an arylene or heteroarylene, wherein the 9-phenyl-9-dibenzofuranyl fluorene ring ensures the spatial torsion of the molecule, avoids the poor film-forming property of the device caused by the molecular stacking; the triazine group and the cyan group have strong electron-withdrawing property, are conducive to electron transport, enhance the recombination of electrons and holes in the light-emitting layer, and thus improve the light-emitting efficiency of the device; the cyan group is bonded to the triazine group through the biphenyl group to increase the conjugation, which is more conducive to adjusting the energy level, reducing the injection barrier, reducing the driving voltage, and at the same time is also conducive to the balanced distribution of the intramolecular electrons, and further improves the light-emitting efficiency of the device.

The present invention relates to a kind of exposed high temperature resistant oxygen-carbon modified waterproof coating, belong to the technical field of coatings. The present invention first utilizes the amino group on aminosilane coupling agent and 1,3,5 triazine 2,4,6 triacyl chloride to react, obtain triazine silane coupling agent, then utilizes the diethoxysilane on triazine silane coupling agent and the hydroxyl on hydroxyethyl cellulose to react, hydroxyl is converted into hydrophobic and heat-resistant Si O C key, while utilizing the triazine ring with good thermal stability, effectively improves the heat-resistant and waterproof performance of hydroxyethyl cellulose. There are a large number of tertiary amino groups on modified cellulose, hydrogen bonds can be formed with the hydroxyl groups on the surfaces of kaolin, heavy calcium carbonate and rutile titanium dioxide in coating, improve the stability of kaolin, heavy calcium carbonate and rutile titanium dioxide in coating, and can form a film with good compactness by hydrogen bond and molecular group embedding effect in drying process, improve the heat resistance, water resistance and weather resistance of coating.

The application relates to the technical field of coatings, and discloses a preparation method of impact-resistant high-strength polyurethane coating and application of the impact-resistant high-strength polyurethane coating in stone materials. The preparation method comprises the following steps: taking tri(2-hydroxyethyl) isocyanurate, 2,2-dimethylol propionic acid, epichlorohydrin and N-benzyl ethanolamine as raw materials, and performing esterification reaction, substitution reaction and ring-opening reaction to obtain a triazine-based hyperbranched polyol. Taking phenyl dichlorophosphine and ethylene glycol as raw materials, substitution reaction is performed to obtain phenyl dihydroxy phosphine oxide. Taking polyethylene glycol as a soft segment, isophorone diisocyanate as a hard segment, phenyl dihydroxy phosphine oxide as a chain extender and the triazine-based hyperbranched polyol with a hydroxyl group as a terminal, a polyurethane emulsion is prepared, and further, the impact-resistant high-strength polyurethane coating is obtained. The polyurethane coating prepared by the application has good impact resistance, flame resistance and strength.

The invention belongs to the technical field of macromolecular flame retardants, and relates to a fluoride-free macromolecular flame retardant for transparent polycarbonate and a preparation method thereof, the structural general formula of the fluoride-free macromolecular flame retardant for polycarbonate is shown in the specification, and n, m and l are natural numbers of 5-10 respectively; m is a metal cation and is selected from one of Li < + >, Na < + >, K < + >, Rb < + > and Cs < + >; the preparation method comprises the following steps: mixing a cyanuric chloride solution, an aryloxy sulfonate solution and an acid-binding agent, and reacting to obtain a triazine monosubstituted intermediate; then heating to 45-50 DEG C, adding a metal salt solution of bisphenol S and an acid-binding agent, and reacting to obtain a triazine disubstituted intermediate; heating to 85-90 DEG C, adding a metal salt solution of benzidine disulfonic acid and an acid-binding agent, and reacting to obtain a product; according to the application, the flame retardant is added into transparent polycarbonate resin and is used for preparing a flame-retardant polycarbonate material. The product disclosed by the invention can keep high flame-retardant efficiency and also has long-term service stability; the preparation method is simple; the application range is wide.

This invention provides a method for preparing triazine aromatic amine dimers. The method involves mixing a triazine compound monomer and an inorganic salt, followed by a high-temperature solid-phase reaction to obtain a crude product. The crude product is then washed to remove the inorganic salt, yielding the triazine aromatic amine dimer. The inorganic salt is selected from one or more of lithium bromide, lithium chloride, lithium fluoride, zinc chloride, and zinc sulfate. This method uses the inorganic salt as a "dynamic active interface" to precisely guide the reaction pathway during the high-temperature solid-phase reaction, achieving highly selective synthesis of triazine aromatic amine dimers. It offers advantages such as high product selectivity, a green process, simple operation, and recyclable inorganic salts.

This invention discloses a method for preparing palladium-supported triazine-based molecular heterojunction materials, comprising: mixing at least two aromatic nitrile compounds, then grinding and mixing them uniformly with a metal halide salt, calcining them in a tube furnace, washing, purifying, and drying to obtain the triazine-based molecular heterojunction material; wherein the aromatic nitrile compounds are at least two of terephthalonitrile, terephthalic acid acetonitrile, or 4,4'-dicyanobiphenyl; mixing the triazine-based molecular heterojunction material and palladium chloride-hydrochloric acid solution uniformly, heating under reflux, cooling to room temperature, adjusting the pH to alkaline with sodium hydroxide solution, adding sodium borohydride solution for reduction reaction, and after the reaction is completed, washing and drying to obtain the palladium-supported triazine-based molecular heterojunction material. Applying this catalyst to the catalytic dehydrogenation of dipentene to p-cymene can yield high-yield and high-purity p-cymene products, which is of great significance for catalyst development and the high-value utilization of biomass.

The present invention provides a kind of cross-linking agent for fracturing and preparation method thereof, belong to the field of oilfield chemical technology, comprise the steps:Borax, glycerine, deionized water, sodium hydroxide, erythritol are mixed, high temperature stirring prepares organic boron cross-linking component;Formaldehyde, methylglyoxal and acetic acid aqueous solution are mixed, are added dropwise to 4,4',4''-(1,3,5-triazine-2,4,6-triyl) triphenylamine solution, pyroreaction, purification obtains porous organic polymer;Porous organic polymer and deionized water are mixed, ultrasonic treatment, dopamine is added, pH value is adjusted with NaOH solution, stirring reaction, purification obtains modified porous carrier;Modified porous carrier is added to deionized water ultrasonic treatment, organic boron cross-linking component high temperature stirring is added, vacuum drying obtains cross-linking agent for fracturing.The present invention can improve the cross-linking efficiency of guar gum, and has the effect of promoting the temperature resistance of fracturing fluid system.

The invention relates to the technical field of drug synthesis, in particular to a preparation method of a high-chiral-purity triazine diketone compound, which comprises the following steps of: performing chiral reduction on a compound I by using a borane reducing agent or performing chiral resolution on the compound I by using an oxazole boron catalyst to obtain an intermediate I; carrying out coupling reaction on the intermediate I and a compound II under the action of a phosphoric anhydride condensing agent to obtain an intermediate II; performing deprotection reaction on the intermediate II to obtain a triazine diketone compound crude product; the method comprises the following steps: extracting and concentrating a triazine diketone compound crude product, adding ethyl acetate and methyl tert-butyl ether, stirring and crystallizing to obtain the high-chiral-purity triazine diketone compound with the e.e.% value of 97.50%-98.64%, the preparation method is mild in reaction condition and simple in operation process, diastereoisomer impurities are not detected, the quality of the raw material medicine is favorably controlled, and the preparation method is expected to be applied to a large-scale production process and has a wide application prospect.