100 results about "Cyanuric chloride" patented technology

The invention relates to the technical field of fine chemical engineering and flame retardant preparation, and discloses a preparation method of bromo-triazine capable of improving thermal stability, and the preparation method comprises the following steps: mixing phenol, water and dichloromethane, controlling the temperature, and carrying out oxidative bromination reaction to prepare an organic phase containing tribromophenol; then, under the action of an organic amine catalyst, carrying out condensation reaction on the organic phase, liquid caustic soda and cyanuric chloride; after the reaction, washing with water to remove impurities; and in the presence of process water, firstly controlling the temperature at 38-42 DEG C for azeotropic desolvation, then raising the temperature to 85-95 DEG C for high-temperature crystallization and crystal growing, and finally cooling, filtering and drying to obtain the bromo-triazine product. By utilizing the high selectivity of the organic amine catalyst and a two-stage azeotropic crystallization process, the side reaction is effectively reduced, the solvent wrapped in the crystal is eliminated, the prepared product is high in main content and extremely low in volatile component, the temperature can reach 370 DEG C or above when the thermal weight loss is 2%, and the thermal stability is remarkably improved.

The invention relates to the field of pouring sealants, and discloses a modified epoxy resin pouring sealant and a preparation method thereof, the pouring sealant comprises epoxy resin, a modified inorganic filler, a modified additive and an auxiliary agent; the modified inorganic filler is prepared by grafting a quaternized s-triazine derivative and an inorganic filler; the quaternized s-triazine derivative is prepared through the steps that 3, 5-diaminophenylboronic acid, cyanuric chloride, 3-chloropropyltrimethoxysilane and 1, 4-butanediamine are sequentially subjected to substitution to prepare a s-triazine derivative, then the s-triazine derivative reacts with N, N-dimethyl-1, 3-diaminopropane, and bromoethane is used for quaternization treatment. The modified additive is prepared from a modified bismaleimide monomer prepared from maleic anhydride and 5 (6)-amino-1-(4-aminophenyl)-1, 3, 3-trimethylindane and 1-methyl-4-isopropyl cyclohexene through a self-stabilization precipitation polymerization method, the prepared pouring sealant is high in tensile strength, good in impact resistance and good in mechanical property, and the prepared pouring sealant has the advantages of being good in mechanical property, good in mechanical property and good in mechanical property. Meanwhile, good heat resistance, flame retardance, dielectricity and antibacterial activity are achieved.

The invention relates to the field of sheath materials, and discloses an anti-aging sheath material for an electronic wire and a preparation method thereof, the sheath material comprises low density polyethylene, an ethylene-vinyl acetate copolymer, an ethylene-octene copolymer, ethylene propylene diene monomer, a triazine ring derivative, ammonium polyphosphate, modified nano silicon dioxide and an auxiliary agent; according to the triazine ring derivative, N-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine reacts with cyanuric chloride to prepare a triazine ring monosubstituent, hydrazine hydrochloride is used as a bridging agent to react with the triazine ring monosubstituent, and the triazine ring derivative and piperazine are polymerized to prepare the triazine ring derivative. The modified nano silicon dioxide is prepared by enabling 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 4-propenyloxy-2-hydroxybenzophenone to react, and carrying out free radical polymerization on the reaction product on the surface of the nano silicon dioxide. The synergistic effect of mechanical property, thermo-oxidative aging resistance, ultraviolet aging resistance and flame retardant property is realized.

This invention provides a high weather-resistant three-color paint and its preparation method. The high weather-resistant three-color paint includes a white primer, a red primer, a blue primer, a topcoat, a clear coat, and a curing agent. Modified silica is added to the white primer, red primer, blue primer, topcoat, and clear coat. The modified silica is obtained by copolymerizing hydroxyl hyperbranched polymer-coated nano-silica, 2,4-dihydroxybenzophenone-grafted cyanuric chloride, and hydroxyl acrylate. This modified silica possesses a three-dimensional cross-linked network structure, which directly enhances the mechanical properties of the paint film. It also incorporates abundant ultraviolet absorbing groups, significantly improving the weather resistance of the paint film. Simultaneously, the large number of active hydroxyl groups it contains enhances the adhesion of the paint film. During the curing process, the isocyanate groups of the curing agent combine with the hydroxyl-containing components in the system to form a highly integrated and dense paint film structure, further improving the mechanical properties, weather resistance, and optimizing acid and alkali resistance of the paint film.

The application relates to the field of sealing rings and discloses a silicon rubber sealing ring for capacitors and a preparation method thereof, which comprises the following components: silicon rubber, modified multi-walled carbon nanotubes, hyperbranched triazine-based additives, vulcanizing agents and lubricants; the modified multi-walled carbon nanotubes are prepared by modifying multi-walled carbon nanotubes after introducing double bonds into a benzotriazole intermediate and glycidyl methacrylate in a hydrogen-containing silicone oil molecular chain through a silicon hydrogen addition reaction; the benzotriazole intermediate is prepared by substitution between 2-(2,4-dihydroxyphenyl)-2H-benzotriazole and acryloyl chloride; the hyperbranched triazine-based additives are prepared by nucleophilic substitution reaction with a diamino phosphorus antioxidant prepared by reaction between phenylphosphoryl dichloride and p-phenylenediamine and cyanuric chloride as a monomer; the application is provided with good mechanical properties, antistatic properties, flame retardant properties and aging resistance by adding the modified multi-walled carbon nanotubes and the hyperbranched triazine-based additives.

The invention relates to an intumescent flame retardant as well as a preparation method and application thereof, and belongs to the technical field of flame-retardant materials. The method comprises the following steps: reacting phosphoric acid with pentaerythritol under a first reaction condition to prepare an intermediate; and adding cyanuric chloride or a derivative thereof into an organic solvent in the presence of alkali, then adding the prepared intermediate, and reacting under a second reaction condition to prepare the target product intumescent flame retardant. Through precise molecular design and step-by-step chemical synthesis, three components, namely an acid source, a carbon source and a gas source, which are physically mixed and have independent functions in a traditional intumescent flame retardant system are integrated into a single molecular structure, so that the prepared intumescent flame retardant is stable and reliable in flame retardant property, the hydrolysis resistance and durability of the flame retardant are remarkably improved, and the flame retardant has good application prospects. The requirements on efficient, lasting and stable flame retardants are met.

The application discloses a fluorescent whitening functional auxiliary and a production process thereof, and relates to the technical field of functional dyes. The fluorescent whitening functional auxiliary comprises the following raw materials in parts by weight: 35-45 parts of a fluorescent whitening agent, 8-10 parts of gamma-cyclodextrin, 4-6 parts of a pH buffer, 2-3 parts of a dispersing agent, and 50-70 parts of deionized water. In the application, L-cysteine is reacted with 2-methyl-2-propenoic acid-2,2,6,6-tetramethyl-4-piperidyl ester to generate a sulfide compound, 4,4'-diaminostilbene-2,2'-disulfonic acid is reacted with cyanuric chloride to generate a monosubstituted compound, the monosubstituted compound is reacted with 7-hydroxy-4-methylcoumarin to generate a disubstituted compound, and the disubstituted compound is reacted with the sulfide compound to generate the fluorescent whitening agent. The fluorescent whitening functional auxiliary prepared in the application has excellent dispersibility, stability and anti-aging performance.

The invention belongs to the technical field of membrane materials, and discloses a high-flux acid-resistant nanofiltration membrane and a preparation method thereof. The method comprises the following steps: (1) coating a porous supporting base membrane with a nitrogen heterocyclic quaternary ammonium salt aqueous solution, infiltrating, and removing excess liquid; (2) coating the surface of the membrane prepared in the step (1) with an n-hexane solution dissolved with cyanuric chloride, and infiltrating to enable the nitrogen-containing hybridized quaternary ammonium salt and cyanuric chloride to be subjected to a substitution reaction; after the reaction is finished, drying to obtain a nanofiltration membrane; wherein the structure of the nitrogen-containing heterocyclic quaternary ammonium salt is nitrogen-containing heterocyclic quaternary ammonium salt containing two or more amino groups, a quaternary ammonium group is positioned on a nitrogen heterocyclic ring, the amino groups are positioned on the nitrogen heterocyclic ring or are directly connected with carbon atoms forming the nitrogen heterocyclic ring, and counter ions are Cl <->, Br <-> or I <->. According to the invention, specific nitrogen-containing heterocyclic quaternary ammonium salt is designed as a water-phase monomer, so that cyanuric chloride is subjected to trisubstitution reaction at room temperature to form a compact separation layer.

The invention discloses a flame-retardant thermoplastic elastomer and a preparation method thereof, and relates to the technical field of high polymer materials. When the flame-retardant thermoplastic elastomer is prepared, cyanuric chloride sequentially reacts with 4-(phenylamino) benzaldehyde and N-(2-aminoethyl) maleimide to prepare a functional cross-linking agent; the preparation method comprises the following steps: grafting a vinyl phosphorus-containing monomer and 2-(2H-benzotriazole-2-yl)-4-methyl-6-(2-propenyl) phenol onto lignin through a free radical graft polymerization method to prepare modified lignin; the preparation method comprises the following steps: polymerizing polycaprolactone glycol and isophorone diisocyanate, and carrying out chain extension by using a bis (hydroxyethyl) furan monomer, so as to prepare polyurethane; uniformly mixing polyurethane, the modified lignin, a functional cross-linking agent and N, N-dimethyl formyl, drying and curing to obtain the flame-retardant thermoplastic elastomer. The flame-retardant thermoplastic elastomer prepared by the invention has the advantages of flame retardance, ultraviolet aging resistance and self-healing.

The invention discloses an intrinsic micropore degradable polymer material based on biomass and hetero-calixarene and a preparation method and application thereof.The method comprises the steps that firstly, cyanuric chloride and resorcinol serve as raw materials, and oxygen atom bridged hetero-calixarene macrocyclic molecules are synthesized in one step under the alkaline condition through a one-pot method; then introducing the lignin derivative into oxygen atom bridged hetero calixarene by utilizing an aromatic nucleophilic substitution reaction on a triazine ring in a macrocyclic molecule, and carrying out a condensation reaction on the obtained multi-aldehyde functionalized oxygen atom bridged hetero calixarene and polyfunctional mercaptan under an acidic condition to obtain the target degradable polymer material. When in use, the material is directly put into an aqueous solution of elemental iodine, iodine negative ions and divalent mercury ions for adsorption. The removal rate of the material to low-concentration iodine simple substances, iodine negative ions and divalent mercury ions can reach 90% or above, and the material after adsorption can be repeatedly used after being washed by an acidic aqueous solution. The material can be degraded under an alkaline condition.

The invention discloses a Pd / 3-CN polymer catalyst as well as preparation and application thereof. The preparation method of the Pd / 3-CN polymer catalyst comprises the following steps: fully mixing cyanuric chloride, 3, 5-diamino-1, 2, 4-triazole, potassium carbonate and potassium tetrachloropalladate, uniformly grinding, transferring the obtained solid powder into a hydrothermal reactor, reacting at 80-160 DEG C for 12-24 hours, washing the obtained solid, performing Soxhlet extraction, and drying to obtain the Pd / 3-CN polymer catalyst. The Pd / 3-CN polymer catalyst is obtained. The invention provides the application of the Pd / 3-CN catalyst in the reaction of preparing the styrene compound by hydrogenation of the phenylacetylene compound, and the Pd / 3-CN catalyst can realize high phenylacetylene compound conversion rate and high styrene compound selectivity within a short reaction time.

This invention discloses a high-barrier PVC / PVDC composite rigid sheet and its preparation method, relating to the field of packaging materials technology. In this invention, an anti-UV derivative is prepared by reacting 4-fluoro-4'-hydroxybenzophenone with cyanuric chloride, then reacted with 1H-benzimidazole-5-carboxaldehyde to introduce an aldehyde group, and finally condensed with a primary amino aldehyde amine of 1,10-diaminodecane to obtain a terminal amino macromolecular UV absorber. This invention also introduces quaternary ammonium groups into the molecular chain of epoxidized soybean oil to obtain quaternized epoxidized soybean oil. The amino groups of the terminal amino macromolecular UV absorber connect the epoxy resin and the quaternized epoxidized soybean oil, reducing the risk of phase separation. This results in the PVC substrate after compression curing possessing both anti-UV groups and antibacterial quaternary ammonium salt groups, endowing the PVC / PVDC composite rigid sheet with antibacterial properties and improving aging resistance, allowing the composite rigid sheet to maintain good barrier performance even after irradiation.

This application provides a method for preparing and applying a red reactive dye. The method includes the following steps: S1: providing 2-amino-5-(β-hydroxyethyl sulfone sulfate)-1,3,4-thiadiazole; S2: reacting the amino-containing red azo compound with cyanuric chloride, causing the amino group on the amino-containing red azo compound to undergo a substitution reaction with one chlorine atom in the cyanuric chloride, to obtain a red azo compound containing a dichlorotriazine group; S3: reacting the 2-amino-5-(β-hydroxyethyl sulfone sulfate)-1,3,4-thiadiazole with the red azo compound containing a dichlorotriazine group, causing the amino group on the 2-amino-5-(β-hydroxyethyl sulfone sulfate)-1,3,4-thiadiazole to undergo a substitution reaction with one chlorine atom in the red azo compound containing a dichlorotriazine group, to obtain a red reactive dye. The red reactive dye prepared by this application exhibits high fixation rate and excellent alkali fastness in fiber dyeing.

The application belongs to the field of aquaculture, and particularly relates to an ammonia-nitrogen removing agent for aquaculture and a preparation method thereof. The ammonia-nitrogen removing agent is composed of the following components in parts by weight: organic chlorine 8-10 parts, peroxide 6-8 parts, oxygen supplier 0.2-0.5 parts, catalyst 0.5-1 part, pH regulator 2 parts, and stabilizer 4-5 parts. The organic chlorine is sodium dichloroisocyanurate and cyanuric chloride, or cyanuric chloride. The catalyst is ferrocene. The pH regulator is sodium bisulfate and phosphate, or phosphate. The stabilizer is anhydrous sodium sulfate and anhydrous magnesium sulfate, or anhydrous sodium sulfate and anhydrous magnesium chloride. The application slowly releases hypochlorous acid through organic precursors, and degrades ammonia-nitrogen in water by combining with the ammonium magnesium phosphate method, so that the concentration is controllable and the effective period is long. While the ammonia-nitrogen removing agent of the application efficiently degrades ammonia-nitrogen, the problem of excessively high initial effective chlorine concentration is avoided, and the safety and stability of the treatment process are significantly improved.

The invention discloses a mirror-polished thin ceramic rock plate and a preparation method thereof, and relates to the field of ceramics. When the mirror-polished thin ceramic rock plate is prepared, octamethylcyclotetrasiloxane, 3-dimethylaminopropyl (dimethoxy) methylsilane and vinyl pentamethyldisiloxane are subjected to a reaction, and polysiloxane is prepared; acrylic acid-2-hydroxyethyl ester and cyanuric chloride react to prepare a cross-linking agent, polysiloxane, the cross-linking agent, chloropropane and methyl iodide react to prepare a hydrophobic antibacterial coating material, the hydrophobic antibacterial coating material and a photoinitiator are evenly mixed, then the surface of a ceramic rock plate is coated with the mixture, and ultraviolet curing is conducted to prepare the hydrophobic antibacterial ceramic rock plate. The mirror-polished thin ceramic rock plate prepared by the preparation method disclosed by the invention has good antibacterial property and hydrophobic property.

The invention relates to the technical field of cross-linking agents, and discloses a preparation method of a high-performance covalent cross-linking agent for acid fracturing, which comprises the following steps: dissolving cyanuric chloride in an organic solvent at low temperature, adding aliphatic primary amine, and adding an alkaline neutralizer to maintain the pH value to prepare a monochloro substituted intermediate solution; polyfunctional amine is added for polycondensation, the volume fraction of the mixed solvent is adjusted so that the solubility parameter can be matched with the hyperbranched skeleton, and a hyperbranched intermediate is prepared by controlling the branch growth rate through solvation; the surface shielding steric hindrance layer is constructed by adopting zwitterionic amine and hydrophobic tertiary amine for surface modification, conformation extension of a zwitterionic structure under strong electrolyte is used for counteracting molecular chain shrinkage, thermal collapse is inhibited by combining hydrophobic association microdomain and skeleton rigidity, and the crosslinking activity in a high-temperature acid environment is maintained.

The application discloses a method for continuously preparing tris(tribromophenoxy) triazine, relates to the technical field of organic chemical synthesis, and is characterized in that 2,4,6-tribromophenol, cyanuric chloride and sodium hydroxide are used as raw materials, a complex organic solvent system is constructed, mixed solution A and mixed solution B are prepared respectively, and the two solutions and a sodium hydroxide solution are continuously fed into a multi-stage series reactor to react; the obtained crude product after the reaction is sequentially subjected to alkali washing, acid washing, water washing and a micro-washing system, and then subjected to a continuous solvent recovery and pressure filtration step, so that a high-purity tris(tribromophenoxy) triazine product is finally obtained. The method realizes full-liquid continuous feeding through the complex solvent, improves feeding stability and reaction control precision, strengthens reaction conversion efficiency and inhibits byproduct generation through the multi-stage liquid-liquid heterogeneous reaction system, improves washing efficiency and impurity control ability through the micro-washing system, and significantly improves product purity, yield and thermal stability, so that the method has a good industrial application prospect.

The application relates to the technical field of preparation of octyl triazone, and particularly discloses a preparation method of sunscreen octyl triazone. The preparation method of sunscreen octyl triazone comprises the following steps: esterification reaction to obtain product A; catalytic hydrogenation: product A is subjected to hydrogenation reaction in the presence of a catalyst, filtration, water separation, addition of a water removal agent into residual liquid for water removal, filtration, cooling, separation, drying, and product B is obtained; the water removal agent comprises A component and B component, raw materials of the A component comprise the following components in parts by weight: molecular sieve raw material, additive, binder, synthetic agent and burnt lime; raw materials of the B component comprise gamma-aminopropyl triethoxysilane, activated carbon and potassium carbonate; warming and refluxing: product B is added into a solvent, and the solvent is warmed to reflux, a mixed solution composed of cyanuric chloride and toluene is added, reaction is carried out, water washing, desolventizing, crystallization, and octyl triazone is obtained.

The invention relates to the field of insulating materials, and discloses a high-performance insulating material and a preparation method thereof.The insulating material comprises silicone rubber, modified composite filler, modified fumed silica, a vulcanizing agent and auxiliaries; the modified composite filler is prepared by grafting an isocyanated composite filler and a phosphorus-containing modified intermediate; the composite filler is prepared from 3-aminopropyltriethoxysilane, succinic anhydride grafted nano aluminum oxide and glass fibers; the phosphorus-containing modified intermediate is prepared by reacting 3, 5-diamino-1, 2, 4-triazole with 4-formyl phenylboronic acid and then grafting with DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide); the modified fumed silica is prepared by grafting fumed silica with a modified silane coupling agent prepared from 1, 2, 2, 6, 6-pentamethyl-4-piperidinol, cyanuric chloride, piperazine and 3-aminopropyltriethoxysilane, and the modified fumed silica has excellent insulativity, flame retardance, antibacterial property and ultraviolet aging resistance.

The invention discloses a quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition and a preparation method thereof, and relates to the technical field of polyoxyethylene ether materials. The quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition is prepared from the following raw materials in parts by weight: 20 to 30 parts of quaternary ammonium salt type pyrrolidine polyoxyethylene ether, 0.5 to 1 part of antioxidant and 25 to 35 parts of deionized water. According to the invention, cyanuric chloride and amino decaglycol monomethyl ether react to generate a monosubstituted compound, and the monosubstituted compound and 3, 5-di-tert-butyl-4-hydroxybenzylamine react to generate the antioxidant. The quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition prepared by the invention has good surface tension and oxidation resistance.

The application discloses a high-nitrogen-content porous carbon-nitrogen compound material and a preparation method thereof. In the preparation method of the high-nitrogen-content porous carbon-nitrogen compound material, first, cyanuric acid is synthesized by hydrazinolysis of cyanuric acid ester, and then, the high-nitrogen-content porous carbon-nitrogen compound is prepared by taking cyanuric chloride as a chlorine source, taking tetrahydrofuran as a reaction solvent, taking N,N-diisopropyl ethylamine as an acid-binding agent and a catalyst, and adopting a condensation reflux mode.

The application discloses an alumina-coated diaphragm in the field of lithium ion batteries and a preparation method thereof. The diaphragm comprises alumina particles, a fluorine-containing porous organosilicon compound, a phosphorus-heterocyclic covalent organic framework, a binder, a dispersing agent and deionized water. The fluorine-containing porous organosilicon compound is formed by mixing methyltrimethoxysilane and perfluorohexyltrimethoxysilane with water, reacting to form a sol-gel system after adjusting pH with ammonia water, continuously reacting by adding aminosilane, and then performing rotary evaporation, calcination and grinding; the phosphorus-heterocyclic covalent organic framework is formed by dissolving cyanuric chloride and triphenylphosphine oxide in anhydrous tetrahydrofuran, reacting to form an intermediate by adding imidazole bromide, continuously reacting by adding ethylene glycol, and then performing vacuum drying and grinding. The diaphragm synergistically enhances the interface adhesion and electrolyte wettability through the bifunctional compound, and improves the thermal stability and cycle performance.

The invention relates to the technical field of high-performance polyester, and discloses a polyester industrial yarn for geogrids and a preparation method thereof.The preparation method of the polyester industrial yarn for the geogrids comprises the following steps that cyanuric chloride and m-phenylenediamine react to obtain an intermediate product; reacting the intermediate product with 4-hydroxyphthalic anhydride to obtain an imide compound; the preparation method comprises the following steps: polymerizing terephthalic acid, ethylene glycol, 1, 6-hexanediol and a modifier, discharging, and pelletizing to obtain a high-performance PET copolyester master batch; mixing the high-performance PET copolyester master batch, polyester chips and the composite modified graphene oxide, and carrying out melt spinning to obtain the terylene industrial yarn for the geogrid; the polyester industrial yarn for the geogrid not only has the characteristics of high strength and high temperature resistance, but also has good corrosion resistance, and when the polyester industrial yarn is used in the warp-knitted polyester geogrid, the working performance of the warp-knitted polyester geogrid can be improved, and the service life of the warp-knitted polyester geogrid can be prolonged.

This invention relates to an acid-resistant electro-driven thin film for electro-driven separation, its preparation method, and its application. The preparation method includes the following steps: (1) Base film activation: The base film is activated sequentially with water, alkaline solution, and acid solution to obtain an activated base film; (2) Interfacial polymerization reaction: The activated base film is sequentially immersed in an aqueous phase solution and an organic phase solution, and then subjected to heat treatment to obtain the acid-resistant electro-driven thin film; The aqueous phase solution includes a polyamine compound; The organic phase solution includes an organic solvent and an organic monomer, The organic monomer includes cyanuric chloride and terephthalic diisocyanate. This invention obtains an acid-resistant electro-driven thin film with excellent conductivity and acid resistance and a reasonable pore structure by combining the base film activation process with the interfacial polymerization reaction of polyamine compounds in the aqueous phase solution and cyanuric chloride and terephthalic diisocyanate in the organic phase solution. This enables efficient separation between ions under acidic and electro-driven conditions.

The invention discloses a preparation method of an azo reactive dye, which comprises the following steps: reacting cyanuric chloride with sodium 2, 5-diaminobenzene sulfonate to obtain a first condensate, diazotizing the first condensate, performing acidic coupling on the first condensate and acetyl J acid, performing alkaline coupling on the first condensate and a diazo solution of 6-beta-ethyl sulfuryl sulfate-2-naphthylamine-1-sulfonic acid, and finally performing secondary condensation on the second condensate and nicotinic acid to obtain the azo reactive dye. Reacting to obtain azo reactive dye primary pulp, wherein the structure of the dye is shown in the specification; the prepared dye is bright in color, excellent in solubility, high in storage stability, good in lifting power and good in fixation rate and color fastness.

This invention belongs to the field of polymer organic chemistry technology and discloses a high-temperature resistant copolymer flame retardant for nylon resin and its preparation method. Under nitrogen protection, the flame retardant is prepared in a two-step process using triphenyl phosphite, cyanuric chloride, and terephthalic acid or 1,6-naphthalenedicarboxylic acid as raw materials. The resulting flame retardant is a halogen-free, environmentally friendly, and high-temperature resistant intrinsic flame retardant. This flame retardant requires a small dosage, and the resulting nylon resin maintains high flame retardant performance without affecting its mechanical properties.

The invention discloses a preparation method and application of an allochroic dye based on a bisazo structure, and belongs to the technical field of environment pH detection. The method comprises the following steps: adding 4-amino-5-hydroxy-2, 7-naphthalene disulfonic acid into a cyanuric chloride suspension, adjusting the pH value to 4-4.5, and carrying out a condensation reaction to obtain a first condensation solution; 4-amino-5-hydroxy-2, 7-naphthalene disulfonic acid is added into the first condensation solution for a condensation reaction, and a second condensation solution is obtained; and adding a diazonium salt into the secondary condensation liquid, adjusting the pH value to 1.0-2.0, carrying out a coupling reaction, and after the reaction is finished, purifying to obtain the bisazo color-changeable dye. The obtained color-changing dye is simple in synthesis process, easy to obtain, good in water solubility, high in sensitivity and good in selectivity, and the pH value of a solution can be rapidly detected through direct visual inspection.

This invention provides a high-temperature stable fluorinated carbon oil displacement surfactant and its preparation method, belonging to the field of surfactant technology. This application constructs a triazine fluorinated surfactant: First, 1H,1H,2H,2H-perfluorooctane-1-ol is used in the presence of anhydrous potassium carbonate to generate a fluorinated alkoxy anion, which forms a C-O bond with cyanuric chloride, introducing a fluorinated hydrophobic arm; then, sodium N-methyltaurate is introduced to N-substitute the unsubstituted chlorine position, introducing a sulfonate hydrophilic head group, obtaining an intermediate of a fluorinated hydrophobic arm and a taurine hydrophilic arm; then, oleylamine is used to replace the remaining chlorine position, introducing a long-chain hydrocarbon hydrophobic arm, forming a surfactant mixture with an O-N-N triazine structure consisting of a "fluorinated alkoxy arm-taurine hydrophilic arm-oleylamine hydrocarbon arm"; after solvent removal and addition to an ethylene glycol monobutyl ether / water co-solvent system, a stable oil displacement surfactant that is easy to prepare and use on-site is obtained.

This invention discloses a precursor of a monochlorotriazine halogen amine antibacterial agent for low-temperature, low-salt finishing, its preparation method, and a cotton fabric and finishing method thereof. The precursor incorporates a 5,5-dimethylhydantoin derivative group linked by a hydrophilic group of sodium p-benzenesulfonate and an ether bond, and is prepared by a temperature- and pH-controlled reaction of cyanuric chloride with sodium p-aminobenzenesulfonate and 3-(3-chloro-2-hydroxypropyl)-5,5-dimethylhydantoin. The cotton fabric finishing process involves precursor dissolution, neutral salt impregnation, low-temperature weak alkali grafting, and chlorination. The process includes impregnation at 25-40°C and alkali reaction at 15-35°C, with a neutral salt concentration of 20-60 g / L and an alkali concentration of 0.5-2 g / L. The precursor has excellent water solubility and fiber compatibility. The finishing process inhibits hydrolysis and reduces energy consumption. The treated cotton fabric has a kill rate of over 99.99% against Staphylococcus aureus and Escherichia coli within 1 minute. After 50 washes, the active chlorine recovery rate exceeds 80%. It has high strength retention, is energy-saving, environmentally friendly and easy to industrialize.

The utility model discloses a stable mixing device of cyanuric chloride and silicon dioxide, which relates to the technical field of powder mixing equipment and comprises a tank body, a material turning pipe is arranged in the middle of the lower end in the tank body in a penetrating manner, the upper end and the lower end of the material turning pipe are communicated and connected with open grooves of the tank body, and a top plate is arranged at the upper end of the tank body. A mixing motor is arranged in the middle of the upper surface of the top plate, a main shaft is arranged at the power output end of the mixing motor, a conveying screw is arranged at the lower end of the main shaft and located in the material turning pipe, and a mixing frame is arranged at the upper end of the main shaft and located on the outer side of the material turning pipe; a cyanuric chloride input port and a silicon dioxide input port are formed in the upper end of the top plate and located on the two sides of the mixing motor in a penetrating mode respectively, the mixing effect of cyanuric chloride and silicon dioxide is improved, a quantitative feeding valve is arranged, the silicon content of cyanuric chloride products is stably controlled in the production process requirement, and the production efficiency is improved. And the silicon content uniformity of the trimerization product is improved.