256 results about "Cyanuric chloride" patented technology

The invention relates to the technical field of polyurethane coatings, in particular to a hydrophobic flame-retardant polyurethane coating and a preparation method thereof. The preparation method comprises the following steps: firstly, taking 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and methallyl alcohol as raw materials, and reacting to obtain hydroxyl grafted phosphaphenanthrene; taking 1, 1, 3, 3-tetramethyldisiloxane and methallyl alcohol as raw materials, and reacting according to a molar ratio of 1: 2 to obtain dihydroxy siloxane; then cyanuric chloride, hydroxyl grafted phosphaphenanthrene and dihydroxyl siloxane react according to the molar ratio of 1: 1: (1.5-1.8), and the dihydroxyl-terminated silicon-containing flame retardant is obtained. The preparation method comprises the following steps: mixing a dihydroxyl-terminated silicon-containing flame retardant with polytetrahydrofuran ether glycol to serve as a soft segment, and reacting with isocyanate to obtain a hydrophobic flame-retardant polyurethane emulsion; mixing the hydrophobic flame-retardant polyurethane emulsion, an anti-aging agent, an ultraviolet light absorber, a defoaming agent, kaolin, nano silicon dioxide and talcum powder to obtain the hydrophobic flame-retardant polyurethane coating.

The invention discloses a chlorine-resistant and acid-resistant composite nanofiltration membrane and a preparation method thereof, and belongs to the technical field of membrane separation. A polyhydric alcohol or / phenol compound monomer containing no less than two hydroxyl groups is subjected to interfacial polymerization with cyanuric chloride, so that a relatively loose network structure can be formed, and selective separation of dye and salt is realized. As a hydrochloric acid (HCl) byproduct can be generated in the reaction process, an alkaline compound is added as an acid-binding agent to neutralize HCl and promote the interfacial polymerization reaction, the formed composite nanofiltration membrane structure does not contain amino groups and polyamide bonds sensitive to active chlorine, the reaction sites of the active chlorine are reduced, and the chlorine-resistant stability of the membrane is good. Meanwhile, the polymer film contains a triazine ring structure, and a formed ether bond has good chemical stability, so that the acid-resistant stability of the film is good. The prepared composite nanofiltration membrane has good nanofiltration separation performance, shows good chlorine-resistant and acid-resistant stability, and can be used for separation of dyes / salts.

The invention discloses an efficient wet desulfurization synergist and a preparation method thereof, and relates to the technical field of flue gas desulfurization. The efficient wet desulphurization synergist comprises the following raw materials in parts by weight: 10-20 parts of sodium formate, 5-10 parts of citric acid, 20-30 parts of binary acid, 5-6 parts of a surfactant, 15-20 parts of magnesium salt, 12-18 parts of sodium salt and 2-5 parts of a pH buffer agent. The preparation method comprises the following steps: reacting cyanuric chloride with lauryl amine to generate a monosubstituted compound; then reacting with L-asparaginic acid to generate a disubstituted compound; reacting with diethylenetriamine to generate a bis-triazine ring compound; and finally, reacting with sodium 2-chloroethanesulfonate to generate the surfactant. The high-efficiency wet desulphurization synergist prepared by the invention has a desulphurization effect.

The invention discloses a synthesis method of bromo-triazine, which belongs to the technical field of organic synthesis, and comprises the following steps: preparing an alumina-loaded N, N-dimethylaminopyridine catalyst, filling the alumina-loaded N, N-dimethylaminopyridine catalyst in a fixed bed reactor, introducing tribromophenol and metal oxide mixed slurry and cyanuric chloride slurry, carrying out a reaction for 2-4 hours, and carrying out a reaction for 2-4 hours to obtain the bromo-triazine. Raising the temperature for reaction to obtain a crude product solution; and performing post-treatment to obtain a bromo-triazine product. According to the invention, the aluminum oxide loaded N, N-dimethylaminopyridine catalyst is synthesized, and the N, N-dimethylaminopyridine enables the reaction speed to be higher and the yield to be higher; nano aluminum oxide is adopted for loading, so that on one hand, dealkalization synthesis of bromotriazine is realized, and on the other hand, the reaction efficiency is accelerated; the continuous process realizes non-aqueous medium and low-temperature short-time reaction, so that hydrolysis is further avoided; the aluminum oxide loaded N, N-dimethylaminopyridine catalyst is high in activity and stability, the synthesis method is simplified, and the aluminum oxide loaded N, N-dimethylaminopyridine catalyst is suitable for industrial large-scale production.

The invention discloses a heteroatom modified intrinsic microporous polymer material, a preparation method and application, and belongs to the technical field of environmental governance, and the preparation method comprises the following steps: (1) preparing nitro-substituted oxygen atom bridged calixarene from cyanuric chloride and nitro-substituted resorcinol in the presence of a basic catalyst; (2) reducing the nitro-substituted oxygen atom bridged calixarene into amino-substituted oxygen atom bridged calixarene; and (3) carrying out a Schiff base polymerization reaction on the amino-substituted oxygen atom bridged calixarene and a polyfunctional aldehyde group under a solvothermal condition to obtain the heteroatom modified intrinsic microporous polymer material. When the adsorbent is used, the adsorbent is directly added into a metal ion solution, the removal rate of dichromate radicals and manganese ions can reach 90% or above, and the adsorbed material can be repeatedly used after being washed by an acidic aqueous solution. And the polymerized material also has high water body stability, and is beneficial to recycling of the material.

The invention discloses a bulletproof composite material and a preparation method thereof, and relates to the technical field of bulletproof composite materials. The bulletproof composite material is formed by compounding aramid fibers and a resin matrix, wherein the resin matrix comprises the following raw materials in parts by weight: 60-70 parts of epoxy resin, 5-8 parts of a modified toughening agent, 4-5 parts of a curing agent, 1-2 parts of a heat stabilizer, 1-2 parts of an inorganic filler, 0.5-1 part of a coupling agent and 2-5 parts of a wetting agent; the preparation method comprises the following steps: reacting cyanuric chloride with 4-hydroxyphenylboronic acid to generate an intermediate 1; reacting the intermediate 1 with 3-amino-1, 2-epoxypropane to generate an intermediate 2; reacting the intermediate 2 with cystamine to generate an intermediate 3, and reacting the intermediate 3 with dopamine to generate the modified toughening agent. The bulletproof composite material prepared by the invention has good ballistic protection performance, multiple impact resistance and self-repairing performance.

The invention relates to the field of fabrics, in particular to a metallic yarn fabric based on a discontinuous aluminum layer and a processing technology thereof.The metallic yarn and polyester fibers are blended to serve as warps, the polyester fibers serve as wefts, the warps and the wefts are interwoven to obtain base cloth, the base cloth is subjected to discontinuous etching in the warp direction through etching liquid, and the pretreated base cloth is obtained; transferring the fabric into antibacterial finishing liquid for padding treatment to prepare the fabric. Modified waterborne polyurethane emulsion containing silicon and nitrogen elements is introduced into finishing liquid, polytetrahydrofuran glycol, hydroxyl-terminated polydimethylsiloxane and isophorone diisocyanate are used as raw materials, 2, 2-bis (hydroxymethyl) propionic acid is used as a hydrophilic chain extender, and cyanuric chloride derivative glycol based on menthol is used as a chain extender; the preparation method comprises the following steps: introducing nano zinc oxide as a finishing agent into a finishing liquid, firstly aminating the nano zinc oxide by using 3-aminopropyltriethoxysilane, then obtaining phytic acid modified nano zinc oxide by using electrostatic and hydrogen-bond interaction, and further grafting cyanuric chloride derivative diol based on menthol.

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 discloses a PVC / PU modified material and a preparation method thereof, and belongs to the technical field of high polymer materials. The PVC / PU modified material comprises the following raw materials in parts by weight: 80-100 parts of PVC, 30-40 parts of PU, 10-20 parts of a plasticizer, 4-8 parts of a modified flame-retardant anti-aging agent, 2-4 parts of a stabilizer and 3-5 parts of a lubricant. The preparation method comprises the following steps: carrying out a reaction on cyanuric chloride and N-phenyl p-phenylenediamine to prepare an intermediate 1, carrying out a reaction on the intermediate 1 and 1-amino-10-undecene to prepare an intermediate 2, carrying out a reaction on diphenyl phosphinyl chloride and 1-amino-10-undecene to prepare an intermediate 3, and finally carrying out a reaction on the intermediate 2 and the intermediate 3 to prepare the modified flame-retardant anti-aging agent. The PVC / PU modified material prepared by the invention has excellent anti-aging performance and flame retardant performance.

The invention relates to the technical field of high polymer materials, in particular to an impact-resistant flame-retardant polyamide cable tie and a preparation method thereof. The preparation method comprises the following steps: fully and uniformly mixing polyamide 6 and a flame retardant, and carrying out melt extrusion, pelletizing and melt spinning to obtain the flame-retardant fiber. The preparation method comprises the following steps: adding a magnesium-aluminum hydrotalcite material, gamma-aminopropyltriethoxysilane, 4-hydroxybenzaldehyde, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and cyanuric chloride to prepare a hydrotalcite flame-retardant material, and further adding the magnesium-aluminum hydrotalcite material, gamma-aminopropyltriethoxysilane, 4-hydroxybenzaldehyde, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and cyanuric chloride to prepare the hydrotalcite flame-retardant material. The preparation method comprises the following steps: pre-mixing polyamide resin, flame-retardant fibers and a hydrotalcite flame-retardant material, adding a flexibilizer, a plasticizer, an antioxidant and a heat stabilizer, and uniformly mixing to obtain a mixture; and sequentially carrying out extrusion granulation and injection molding on the mixed material to obtain a finished product. The finished product prepared by the invention has good flame retardant property and impact resistance, thereby having wide application prospects in the technical field of high polymer materials.

The nanofiltration membrane comprises a base membrane and a functional layer, the functional layer comprises a polymer, polymerization unit monomers of the polymer comprise amine monomers and cyanuric chloride, the amine monomers comprise aliphatic amine and aromatic amine derivatives, the aliphatic amine comprises at least two primary amine or secondary amine groups, and the aromatic amine derivatives comprise at least two aromatic amine derivatives. The aromatic amine derivative comprises at least two reaction functional groups and at least one hydrophilic group, the reaction functional groups comprise at least one of amino groups and hydroxyl groups, and the hydrophilic group comprises at least one of sulfonic acid groups, amino groups, hydroxyl groups, carboxyl groups and phosphate groups. Therefore, the nanofiltration membrane provided by the invention has relatively high desalination rate and stable alkali resistance.

The invention discloses a preparation process of a composite reactive dye, which comprises the following steps: mixing cyanuric chloride and meta-ester, pulping, carrying out primary condensation, adding 2, 4-diaminobenzene sodium sulfonate, carrying out secondary condensation, and carrying out diazotization to obtain a secondary condensed diazonium solution; the preparation method comprises the following steps: diazotizing p-aminobenzene sulfonic acid at low temperature, carrying out acidic coupling reaction on the diazotized p-aminobenzene sulfonic acid and H acid to obtain an acid coupling solution, adding N-ethyl-3-carbamoyl-4-methyl-6-hydroxy-2-pyridone dry powder, adjusting alkali, and dissolving; and adding a secondary diazonium solution into the dissolved clear solution, and carrying out alkaline coupling reaction to obtain an alkaline coupling solution, namely the composite reactive dye raw stock. According to the preparation process of the composite reactive dye, a compounding and color mixing procedure is omitted, the composite dye is synchronously prepared in a synthesis stage, and the primary pulp has the advantages of good solubility, high solid content, smooth material transmission, low spray drying energy consumption and the like; the product has good fastness, the proportion of yellow and blue can be adjusted in the synthesis stage, the color of the dye can be converted between light green and dark green, and the requirements of the downstream industry for various color matching of the product are met.

The invention relates to the field of protective films, and discloses a liquid crystal display light guide plate TPE protective film and a preparation method thereof, the protective film comprises modified SBS, polypropylene, modified nano calcium carbonate, a lubricant and a plasticizer; the modified nano calcium carbonate is prepared by grafting a modified additive on the surface of nano calcium carbonate through chemical reaction and then coordinating with copper ions; the modified additive is prepared by preparing a chlorinated silicon-containing intermediate by using dichlorodiphenyl silane, diethylene glycol and cyanuric chloride as raw materials and then grafting a component I and 3-aminopropyltrimethoxysilane; the component I is prepared from 5-chloromethylthiazole and p-phenylenediamine through a reaction, and the modified SBS is prepared from epoxidized SBS and nano titanium dioxide subjected to amination modification by 3-aminopropyltriethoxysilane through a ring-opening reaction. The film material is endowed with excellent tensile strength, aging resistance and antibacterial and flame-retardant effects.

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 discloses an aluminum oxide coated diaphragm and a preparation method thereof in the field of lithium ion battery diaphragms. The diaphragm comprises aluminum oxide particles, a fluorine-containing porous organosilicon compound, a phosphorus heterocyclic covalent organic framework, a binder, a dispersant and deionized water. The fluorine-containing porous organosilicon compound is prepared by mixing methyltrimethoxysilane, perfluorohexyltrimethoxysilane and water, adding ammonia water to adjust the pH value, then reacting to form a sol-gel system, adding amino silane to continue reacting, and then carrying out rotary evaporation, calcination and grinding. The phosphorus heterocycle covalent organic framework is prepared by dissolving cyanuric chloride, triphenylphosphine oxide and anhydrous tetrahydrofuran, adding imidazole bromide to react to form an intermediate, then adding ethylene glycol to continuously react, and performing vacuum drying and grinding to obtain the phosphorus heterocycle covalent organic framework. According to the diaphragm, the interface adhesion and electrolyte wettability are enhanced synergistically through the bifunctional compound, and the thermal stability and the cycle performance are improved.

The invention relates to the technical field of dyes, and particularly discloses a pyrimidinyl acid ornamental blue reactive dye as well as a preparation method and application thereof. According to the invention, trichloropyrimidine is introduced into the ornamental blue structure as an active group, and the reactivity of the trichloropyrimidine is lower than that of an active group of a cyanuric chloride structure, so that the pyrimidine acid ornamental blue reactive dye is more stable and not easy to hydrolyze after being combined with cellulosic fibers, the acid-resistant and alkali-resistant stability of a dye-fiber covalent bond is better, and the dyeing performance is more excellent; in addition, water-soluble groups such as a sulfonic acid group and a carboxyl group are introduced, so that the water solubility of the pyrimidinic acid blue reactive dye is improved. Moreover, the pyrimidinyl acid ornamental blue reactive dye prepared by the invention has a good dyeing effect on chemical fibers such as acrylic fibers, spandex and the like and blend fiber fabrics thereof, the adaptability of ornamental blue is further improved, the dye is stable in dyeing, deep in coloring and good in color fixing effect, meanwhile, the acid and alkali resistance of the fabrics is improved, and the pyrimidinyl acid ornamental blue reactive dye has a wide application prospect.

The invention provides a preparation method of 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine, and belongs to the technical field of sun-screening agent preparation. The preparation method of the 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine comprises the following steps: carrying out substitution reaction on a compound in a formula I to obtain a compound in a formula II; performing hydrolysis reaction on the compound in the formula II to obtain a compound in a formula III; and carrying out Friedel-Crafts reaction on the compound shown in the formula III and cyanuric chloride to obtain a compound shown in a formula IV. The preparation method comprises the following steps: reacting benzoic acid-3-hydroxyphenyl ester with n-butyl bromide to obtain benzoic acid-3-(butyloxy) phenyl ester, removing benzoyl from the benzoic acid-3-(butyloxy) phenyl ester to obtain 3-(butyloxy) phenol, and reacting 3-(butyloxy) phenol with cyanuric chloride to obtain 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine, so that the yield of 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is increased, and the yield of 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is increased. The yield of the 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is increased, and the production cost of the yield of the 2, 4, 6-tri (4 '-butoxy-2'-hydroxyphenyl)-triazine is reduced.

The invention relates to a tackifying surfactant with carbon dioxide response and application of the tackifying surfactant in fracturing fluid, which comprises the following steps: 1, adding ethanol as a solvent, sequentially adding cyanuric chloride and long-chain fatty amine while stirring, controlling the reaction in an ice-water bath, and adjusting the pH value of the reaction system to 8-9 by using alkali in the reaction process until the reaction is ended to obtain an intermediate product (I); 2, hydroxyethyl piperazine is added into the intermediate product (I), stirring and mixing are conducted, the temperature is increased to 30-40 DEG C or below, after a heat preservation reaction is conducted for 1-2 h, the temperature continues to be increased while the ethyl alcohol is distilled off and recycled, when the temperature is increased to 80-95 DEG C, the heat preservation reaction is conducted for 5-6 h, the pH of a reaction system is adjusted to be 8-9 with alkali in the reaction process, and after the reaction is finished, the CO2 response tackifying surfactant is obtained. The protonation rate of tertiary amine groups is increased, more tertiary amine groups are contained in surfactant molecules to form multiple cations, then more stable wormlike micelles are formed through the surfactant molecules and small molecule salt, and the tackifying effect and the salt resistance are further improved.

The invention discloses a preparation method and application of a multicolor double-dyed antibacterial polyester-cotton fabric, and the preparation method comprises the following steps: S1, mixing a polyester-cotton fabric, a disperse dye and a solvent, and carrying out high-temperature and high-pressure treatment to obtain a dyed polyester-cotton fabric; s2, dipping the dyed polyester-cotton fabric in a cyanuric chloride solution, and carrying out a first heating reaction to obtain a cyanuric chloride grafted polyester-cotton fabric; and S3, dipping the cyanuric chloride grafted polyester-cotton fabric in a sodium copper chlorophyllin aqueous solution, and carrying out a second heating reaction to obtain the multicolor double-dyed antibacterial polyester-cotton fabric. By controlling the process conditions of the polyester high-temperature and high-pressure dyeing process, the content of hydroxyl exposed on the surface of cotton fiber in the fabric is effectively increased while dyeing is performed, so that more sodium copper chlorophyllin is grafted on the surface of the fabric through cyanuric chloride, and the polyester-cotton fabric with diversified colors, excellent antibacterial effect and good toughness is obtained.

The invention provides a long-acting antibacterial chinlon composite fiber and a preparation process thereof, and belongs to the technical field of composite fibers. The preparation process comprises the following steps: preparing the modifier; preparing modified graphite; preparing the antistatic modified polyamide fiber; preparing an antibacterial treatment solution; and preparing the chinlon composite fiber. Cyanuric chloride and N, N-dimethyl propane diamine react to generate an intermediate, then the intermediate and 1, 3-propane sultone react to generate an antibacterial agent, the antibacterial agent is prepared into an antibacterial treatment solution, and after the antibacterial treatment solution is added into the pretreated antistatic modified polyamide fibers, the antibacterial agent can be connected to the surfaces of the fibers, so that the antistatic property of the fibers is improved. The anti-static modified polyamide fiber has better washing-resistant and antibacterial properties by adding the antibacterial agent into the polyamide fiber, and then the washing-resistant and antibacterial properties of the antibacterial agent can be further improved after bond energy is enhanced through heat treatment, so that the prepared polyamide composite fiber has a long-acting antibacterial effect.

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.

The invention belongs to the technical field of chemical membrane separation, and particularly relates to an oxidation-resistant composite reverse osmosis membrane and a preparation method thereof.The preparation method comprises the following steps that a m-phenylenediamine water-phase solution, a trimesoyl chloride oil-phase solution and a cyanuric chloride oil-phase solution are prepared; soaking the porous support body in a m-phenylenediamine water phase solution, then soaking the porous support body in a trimesoyl chloride oil phase solution, and carrying out interfacial polymerization reaction to prepare a nascent state reverse osmosis membrane; soaking the nascent state reverse osmosis membrane in a cyanuric chloride oil phase solution, then soaking the nascent state reverse osmosis membrane in a m-phenylenediamine water phase solution, and carrying out interfacial polymerization reaction again to prepare a polyamide and polytriazine composite membrane; and carrying out heat treatment on the polyamide and polytriazine composite membrane to prepare the oxidation-resistant composite reverse osmosis membrane. The preparation method is simple in process, the prepared composite reverse osmosis membrane is good in oxidation resistance and high in desalination performance, and the prepared oxidation-resistant composite reverse osmosis membrane is gt in desalination rate; the oxidation resistance is gt; and the reaction time is 20000ppmh.

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 invention belongs to the technical field of catalyst preparation, and particularly relates to a novel lignin-based copper catalyst and a preparation method and application thereof. The preparation method comprises the following steps: mixing lignin with cyanuric chloride, heating for reaction, and carrying out suction filtration and washing to obtain cyanuric chloride functionalized lignin; mixing the cyanuric chloride functionalized lignin with benzylamine, reacting, and carrying out suction filtration and washing to obtain benzylamine functionalized lignin; and adding the benzylamine functionalized lignin and cuprous iodide into a solvent, reacting, carrying out suction filtration, and washing to obtain the lignin-based copper catalyst. The lignin-based copper catalyst prepared by the method is low in preparation cost, can be recycled, and has the advantages of mild catalytic conditions, high catalytic efficiency and high yield.

The invention discloses a porous material for silicon carbide crystal growth and a preparation method thereof, and belongs to the field of silicon carbide crystal growth. Melamine and cyanuric chloride are used as polymer monomers to prepare a nitrogen-containing polymer, tantalum chloride is used as a doping agent, so that tantalum can be uniformly distributed in a polymer network, and after sintering, the nitrogen-containing polymer is prepared. Tantalum and TaN / TaC are doped to form a TaC / TaN doped porous material, uniform distribution of silicon carbide grains can be promoted through doping of tantalum and generation of TaN / TaC, formation of large grains is prevented, then silicon carbide crystals with fine and uniform granularity are obtained, and due to the stability of tantalum compounds, the tantalum compounds can effectively promote form control of the silicon carbide crystals at high temperature (such as control of the length-width ratio of the crystals).

The invention belongs to the field of reactive dye synthesis, and discloses a preparation process of a reddish brown reactive dye, which comprises the following steps: diazotizing 2-naphthylamine-4, 6, 8-trisulfonic acid, coupling with 1-naphthylamine-7-sulfonic acid to obtain a first-couple material, diazotizing the first-couple material again, coupling with m-toluidine to obtain a second-couple material, refining the second-couple material to obtain a color base, and drying to obtain the reddish brown reactive dye. Carrying out primary condensation on cyanuric chloride and 2, 5-aniline disulfonate to obtain a primary condensation material, carrying out secondary condensation on the primary condensation material and a color base, and filtering the secondary condensation slurry to obtain the reddish brown reactive dye primary stock. The preparation process provided by the invention is stable and low in spray drying energy consumption, and the prepared primary pulp has the advantages of high purity and high solid content, and is excellent in solubility and high in fastness to washing.

The invention discloses a corrosion-resistant polypropylene insulated cable and a preparation process thereof, and belongs to the technical field of cables. The corrosion-resistant polypropylene insulated cable sequentially comprises a cable core, a wrapping layer, an inner sheath layer, an armor layer and an outer sheath layer from inside to outside, the inner sheath layer and the outer sheath layer are both made of a corrosion-resistant polypropylene cable material; the corrosion-resistant polypropylene cable material is prepared from the following raw material components: polypropylene, POE (Polyolefin Elastomer), a plasticizer, a composite flame retardant, a heat-conducting filler, a lubricant, an ultraviolet light absorber and a nucleating agent, the composite flame retardant is prepared from the following raw materials: cyanuric chloride, 4-hydroxymethyl-1-oxo-1-phospha-2, 6, 7-trioxabicyclo [2.2. 2] octane, hydroxyl N-alkoxy hindered amine, ethidene diamine and N-(2-aminoethyl) maleimide; the heat-conducting filler is prepared from the following raw materials: graphene oxide, a silane coupling agent, boron nitride and 3, 5-di-tert-butyl-4-hydroxycinnamic acid; the corrosion-resistant polypropylene insulated cable prepared by the invention is relatively good in corrosion resistance, heat dissipation performance, flame retardance, thermo-oxidative aging resistance and mechanical property.

The application discloses a bulletproof composite material and a preparation method thereof, and relates to the technical field of bulletproof composite materials.The bulletproof composite material is composed of aramid fiber and a resin matrix, wherein the resin matrix comprises the following raw materials in parts by weight: 60-70 parts of epoxy resin, 5-8 parts of a modified toughening agent, 4-5 parts of a curing agent, 1-2 parts of a heat stabilizer, 1-2 parts of an inorganic filler, 0.5-1 parts of a coupling agent and 2-5 parts of a wetting agent;the intermediate 1 is generated by the reaction of cyanuric chloride and 4-hydroxyphenylboronic acid;the intermediate 2 is generated by the reaction of the intermediate 1 and 3-amino-1,2-epoxypropane;the intermediate 3 is generated by the reaction of the intermediate 2 and cystamine;and the modified toughening agent is generated by the reaction of the intermediate 3 and dopamine.The bulletproof composite material prepared by the application has good ballistic protection performance, anti-multiple impact performance and self-repairing performance.

The application relates to the dye technology field, and particularly discloses a pyrimidine acid observation blue active dye, a preparation method and application thereof. A trichloropyrimidine is introduced as an active group on the basis of the observation blue structure, the reactivity of the trichloropyrimidine is lower than that of the cyanuric chloride structure, the pyrimidine acid observation blue active dye is more stable after being combined with cellulose fibers, is not easy to hydrolyze, the acid and alkali resistance of a 'dye-fiber' covalent bond is better, and the dyeing performance is more superior; in addition, water-soluble groups such as sulfonic acid groups and carboxyl groups are introduced to improve the water solubility of the pyrimidine acid observation blue active dye. Furthermore, the pyrimidine acid observation blue active dye prepared by the application has good dyeing effects on acrylic fibers, spandex and other chemical fiber fabrics and blended fiber fabrics, further improves the adaptability of the observation blue, the dyeing is stable, the color is deep, the fixation effect is good, meanwhile, the acid and alkali resistance of the fabric is improved, and the application prospect is wide.

The application provides a long-acting antibacterial chinlon composite fiber and a preparation process thereof, and belongs to the technical field of composite fibers; the preparation process comprises the following steps: preparing a modifier; preparing modified graphite; preparing an antistatic modified chinlon fiber; preparing an antibacterial treatment solution; and preparing a chinlon composite fiber.The intermediate is generated by the reaction of cyanuric chloride and N,N-dimethylpropylenediamine, and then the intermediate is reacted with 1,3-propanesulfonic acid lactone to generate an antibacterial agent; the antibacterial agent is prepared into an antibacterial treatment solution and added to the antistatic modified chinlon fiber after pretreatment, so that the antibacterial agent is connected to the surface of the fiber, the antistatic modified chinlon fiber has good washing-resistant antibacterial performance, and then the bond energy is enhanced through heat treatment, so that the washing-resistant antibacterial performance of the antibacterial agent is further improved, and the chinlon composite fiber prepared has long-acting antibacterial effect.