1086 results about "Epichlorohydrin" patented technology

An absorbent retail paper product comprised of cellulosic fibers having a concentration of 1, 3-dichloro-2-propanol that is not detected to 50 ppb, as measured using the ACOC official method 2000.0150, a concentration of 3-monochloro-1, 2-propanediol that is not detected to 1000 ppb, as measured using the ACOC official method 2000.0150, as measured by the "adipic acid test", as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150. Polyaminoamide-epihalohydrin at a concentration of not detected to 0.09% has a lateral wet strength of from 80 n / m to 200 n / m wherein all of the cellulosic fibers contained in the absorbent paper product are non-synthetic, the cellulosic fibers and the absorbent paper product are substantially free of formaldehyde.

The invention discloses a flame-retardant corrosion-resistant coating and a preparation method thereof, and relates to the technical field of coatings. When the flame-retardant and corrosion-resistant coating is prepared, hexaaryl biimidazole and epoxy chloropropane are subjected to a reaction, and epoxidized hexaaryl biimidazole is prepared; the pre-modified mica sheet and 3-aminopropyltriethoxysilane are subjected to a reaction, and a modified mica sheet is prepared; the preparation method comprises the following steps: reacting allyl amine with 4 '-[4-(bromomethyl) phenyl]-2, 2': 6 ', 2' '-terpyridyl to obtain allyl terpyridyl; the preparation method comprises the following steps: reacting epoxy resin with allyl terpyridyl to obtain modified epoxy resin; and uniformly mixing the modified epoxy resin, epoxidized hexaaryl biimidazole, the modified mica sheet, isophorone diamine and acetone to prepare the flame-retardant corrosion-resistant coating. The flame-retardant corrosion-resistant coating prepared by the invention has excellent corrosion resistance, flame retardance and self-repairing performance.

The invention discloses an anti-scale cross-linked polymer fracturing fluid and a preparation method thereof, and relates to the technical field of petroleum fracturing fluids. When the anti-scale cross-linked polymer fracturing fluid is prepared, allylamine hydrochloride and epoxy chloropropane react to prepare a double-bond chlorinated intermediate; reacting the double-bond chlorinated intermediate with lauramidopropyl dimethylamine to prepare a cationic monomer; copolymerizing a cationic monomer and acrylamide to prepare a cationic polymer; the preparation method comprises the following steps: reacting L-lysine with formaldehyde and phosphorous acid to prepare phosphoric acid modified lysine; reacting the phosphoric acid modified lysine with allyl glycidyl ether to prepare a phosphoric acid modified monomer; acrylamide and an anionic monomer are copolymerized to prepare an anionic polymer; the anionic polymer and the cationic polymer are dissolved in water to prepare the anti-scale cross-linked polymer fracturing fluid. The anti-scale cross-linked polymer fracturing fluid prepared by the invention has the advantages of scale prevention, good temperature resistance, good shear resistance and self-crosslinking.

The invention discloses a high-temperature-resistant lignite resin and a preparation method thereof, and belongs to the field of drilling fluids, and the preparation method comprises the following steps: obtaining and preparing an extracting solution containing humic acid from lignite; adding hydrochloric acid into the extracting solution, separating, filtering and precipitating, dissolving the precipitating in a sodium hydroxide solution to obtain a humic acid solution, adding formaldehyde and sodium pyrosulfite into the humic acid solution, preheating to 80 DEG C, adding the extracting solution, heating to 110-130 DEG C, continuously stirring, reacting for 1-3 hours, and cooling to 60 DEG C or below to obtain a reaction product; transferring a reaction product to a neutralizing tank, dropwise adding a NaOH solution, adjusting the pH value to 10-11, and controlling the temperature below 55 DEG C; the mass ratio of the dry basis mass of sulfonated humic acid to ECH is 1: (0.05-0.15), the temperature is kept at 45-55 DEG C, the stirring speed is 400-600 rpm, and the reaction is performed for 2-4 hours; meanwhile, a NaOH solution is continuously added, and the pH is kept at 10-11. Adjusting the pH value of the reaction liquid to 7-8 by using dilute HCl, and terminating the reaction; and obtaining a resin product.

The invention provides a soybean protein nanoparticle coagulant for removing perfluorinated compounds in water as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing N, N-dimethyl hexadecylamine and epoxy chloropropane into a reaction precursor, namely epoxy propyl hexadecyl dimethyl ammonium chloride; meanwhile, hydrolyzing the soybean protein isolate by using protease to obtain a hydrolyzed soybean protein solution; enabling the epoxy group on the epoxy propyl hexadecyl dimethyl ammonium chloride and the amino group on the hydrolyzed soybean protein to be subjected to ring-opening addition reaction so as to be grafted to the hydrolyzed soybean protein, and adding acetone to generate precipitate after the reaction is finished; and collecting the precipitate, washing and drying to obtain the soybean protein nanoparticle coagulant for removing the perfluorinated compounds in the water. The soybean protein nanoparticle coagulant prepared by the invention utilizes strong electrostatic interaction and hydrophobic interaction, the removal capacity and selectivity of the soybean protein nanoparticle coagulant on PFAS are far higher than those of a traditional coagulant, and the soybean protein nanoparticle coagulant has excellent removal efficiency and remarkable anti-interference capability.

The invention relates to the technical field of polyester fibers, and discloses a preparation method of antibacterial modified polyester hollow fibers, which comprises the following steps: by taking nitrilotriacetic acid, thionyl chloride, epoxy chloropropane, eugenol and the like as raw materials, carrying out acylating chlorination reaction, quaternization reaction and esterification reaction to obtain eugenol epoxy quaternary ammonium salt. The preparation method comprises the following steps: carrying out ring-opening reaction on carboxyl groups in graphene oxide and epoxy groups in eugenol epoxy quaternary ammonium salt to obtain modified graphene, uniformly mixing the modified graphene with polyethylene glycol terephthalate, and carrying out a series of steps to finally obtain the antibacterial modified polyester hollow fiber. Eugenol and quaternary ammonium salt are utilized to improve the antibacterial property of the polyester hollow fiber, and graphene is utilized to improve the mechanical property of the polyester hollow fiber. The polyester hollow fiber prepared by the invention has excellent mechanical properties and antibacterial properties.

The invention provides a preparation method and application of polypyrrole graphene oxide hydrogel with an anisotropic structure. The preparation method comprises the following steps: adding sodium hydroxide and urea into water according to a certain proportion, adding microcrystalline cellulose into an alkali urea solution, uniformly stirring, and repeatedly freezing and thawing to obtain a cellulose solution; adding graphene oxide into water for cell disruption and dispersion to obtain a uniform graphene oxide solution; adding the graphene oxide solution into the cellulose solution, then adding an epichlorohydrin cross-linking agent, and carrying out stirring treatment, centrifugation and low-temperature standing to form gel; and pre-stretching the hydrogel to a certain length, immersing the hydrogel into a dilute sulphuric acid solution, taking out the hydrogel, adding pyrrole, carrying out polymerization growth in a closed environment, taking out the hydrogel, soaking the hydrogel in water, and washing the hydrogel to obtain the anisotropic polypyrrole graphene oxide hydrogel. The anisotropic polypyrrole graphene oxide cellulose hydrogel disclosed by the invention has excellent solar photo-thermal water evaporation performance and also has excellent thermal management performance.

The invention discloses a quick-curing polyurethane seamless expansion joint material for roads and a preparation method, and belongs to the technical field of road engineering materials. The material is prepared from polyether polyol, polycaprolactone glycol, a bisphenol A epoxy-polyether block isocyanate terminated prepolymer, a methyl phenyl silicon-boron hybrid hydroxyl chain extender, diphenylmethane diisocyanate, calcium carbonate, wollastonite, a hindered amine anti-aging agent and dioctyl phthalate. Wherein the bisphenol A epoxy-polyether block isocyanate terminated prepolymer is prepared by the following steps: reacting bisphenol A with epoxy chloropropane to generate epoxy resin, reacting with polytetramethylene ether glycol, and introducing isophorone diisocyanate; the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation and ethylene glycol reaction on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester; and the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester. The material has the advantages of quick curing property, weather resistance and high-temperature stability, and is suitable for road seamless expansion joint scenes.

The invention discloses a low-temperature polyether demulsifier for oil and gas gathering and transportation and a preparation method thereof, and relates to the technical field of petrochemical engineering, and the preparation method is characterized by comprising the following steps: compounding cardanol, pentaethylenehexamine and bisphenol F according to a specific molar ratio to obtain an initiator, and carrying out formaldehyde condensation to prepare a composite initiator; epoxypropane and ethylene oxide are grafted through staged block copolymerization to form a polyether skeleton; introducing a fluorine-containing epoxy monomer to carry out terminal fluorination modification; finally, adipic acid and epichlorohydrin are subjected to chain extension crosslinking, and the demulsifier with the molecular weight being 8000-12000 Da, the fluorine content being 5.5-6.5 wt% and the PDI being smaller than or equal to 1.3 is prepared. The low-temperature demulsifying agent has the effects of realizing efficient demulsification at low temperature, improving the demulsifying efficiency and reducing the dosage through coordination of the composite initiator, super-hydrophobic permeation of the fluorinated block and accurate regulation and control of the molecular weight, solving the problems of low-temperature failure and easiness in emulsification of a traditional demulsifying agent, and meeting the requirements of low-temperature working conditions of oil and gas gathering and transportation.

The invention belongs to the technical field of lithium battery positive electrode materials, and provides high-compaction-density lithium iron phosphate and a preparation method thereof.The preparation method comprises the following steps that 1, pretreated polyvinyl alcohol is added into deionized water, the temperature is increased to 80-85 DEG C, stirring is conducted, the pH value is adjusted to 10.5-11.0, epichlorohydrin is added for a reaction, aniline is added for a continuous reaction, cooling is conducted, and a product is obtained; adjusting the pH value to 1-2, adding ammonium persulfate for reaction, and dialyzing to remove impurities to obtain modified polyvinyl alcohol; step 2, adding a lithium source, an iron source and a phosphorus source into deionized water for mixing, and performing ball milling and drying to obtain a lithium iron phosphate precursor; step 3, putting the lithium iron phosphate precursor into a tubular furnace, adding an inorganic carbon source, heating for reaction, cooling and crushing to obtain primary sintered lithium iron phosphate; and step 4, mixing the primarily sintered lithium iron phosphate and the modified polyvinyl alcohol, placing the mixture in a tubular furnace, carrying out heating reaction, cooling and crushing to obtain the lithium iron phosphate.

The invention relates to the technical field of degradable PE (polyethylene) packaging materials, and discloses a PE film, a preparation process and application in tissue packaging, and the PE film is prepared by the following steps: by taking 7-(diethylamino) coumarin-3-carboxylic acid, 2-naphthyl methanol and epoxy chloropropane as raw materials, carrying out esterification reaction and quaternization reaction to prepare an epoxidized biodegradable organic photosensitizer; based on an epoxy-hydroxyl ring-opening reaction mechanism, hydroxylated titanium dioxide nanoparticles and polyvinyl alcohol resin are respectively modified by using an epoxidized biodegradable organic photosensitizer, and compounding is performed based on a pi-pi accumulation effect between aromatic rings to prepare the ultraviolet light dependent photo-biodegradable component. According to the present invention, the ultraviolet light dependent light-biological degradation component, the compatible component and the composite auxiliary agent are added to the polyethylene matrix, and blow molding is performed to obtain the PE film, and the film product shows excellent light-biological dual degradation performance, has actual use value, and can be used in the tissue packaging field.

The invention belongs to the field of preparation of organic fertilizers, and particularly relates to a moisturizing and drought-resisting bio-organic fertilizer and a preparation method thereof. The preparation method comprises the following steps: carrying out a cross-linking reaction on a boiled and crushed starch matrix, carboxymethyl cellulose and epoxy chloropropane to form a compound solution, and mixing the compound solution with mixed animal bone meal capable of enhancing the stress resistance of plants, so that the obtained nutritional base material can quickly provide nutrients for the plants for a long time; kelp and seaweed are mixed and ground into thick liquid, under the combined action of calcium chloride and tannic acid, a three-dimensional net-shaped structure is formed, the plant component containing the fungicide is put into the colloid component, and the obtained moisture-preserving and drought-resisting component can keep soil moisture for a long time; the long-acting stability-maintaining suspension can form a protective layer on the surface of soil, the moisturizing and drought-resisting component and the organic fertilizer mixture are mixed, and the prepared moisturizing and drought-resisting bio-organic fertilizer can efficiently and rapidly provide nutrients for crops, has the moisturizing and drought-resisting capacity and can play the moisturizing and drought-resisting roles in a long term.

The invention discloses a preparation method of a heat conduction and electromagnetic shielding self-healing polyurethane composite material, which comprises the following steps: modifying nano cellulose CNF (denoted as CNF-coated PPA) by using polyphenol amine PPA, and depositing silver nanoparticles on the surface of the CNF-coated PPA in situ to obtain a deposited material; the preparation method comprises the following steps: preparing a polyamide epichlorohydrin PAE solution, modifying graphene nanosheets GNP by using the PAE solution, and recording the modified graphene nanosheets GNP as PAE-GNP suspension liquid; cNF (at) PPA (at) Ag is dispersed into the PAE-GNP suspension liquid, and the CNF (at) PPA (at) Ag suspension liquid is marked as CNF-GNP suspension liquid; and preparing waterborne polyurethane WPU, dispersing the CNF-GNP suspension into the WPU, and carrying out vacuum filtration, drying and hot pressing on the mixed solution to obtain the polyurethane composite material. The method is simple in preparation process, mild in reaction condition and stable in product quality, and the polyurethane composite material prepared according to the method has excellent heat conduction, electromagnetic shielding and self-healing performance.

The invention relates to the technical field of natural polymer material processing, and discloses a cross-linked composite chitosan solution which is composed of the following components in percentage by mass: 1%-5% of chitosan, 0.1%-5% of a cross-linking agent, 0.1%-5% of acetic acid and the balance of water, and the cross-linked composite chitosan solution is prepared from the following components in percentage by mass: 1%-5% of chitosan, 0.1%-5% of a cross-linking agent, 1%-5% of acetic acid and the balance of water. The cross-linking agent is one or more of glutaraldehyde, citric acid and epoxy chloropropane. According to the cross-linked composite chitosan solution and the preparation method of the chitosan fiber of the cross-linked composite chitosan solution, the adaptability of the cross-linked composite chitosan solution in a human body can be further improved and the immunoreaction can be reduced through a cross-linking reaction, so that the enhancement of the biocompatibility of the cross-linked composite chitosan solution can be ensured; by selecting different cross-linking agents and controlling the cross-linking degree, the biodegradation rate of the chitosan can be adjusted to a certain extent, so that the chitosan is more suitable for specific medical or environmental application requirements, and in addition, the water resistance of the chitosan can be remarkably improved through the cross-linking effect.

The invention discloses electronic-grade amine epoxy resin and a preparation method thereof, and belongs to the field of epoxy resin preparation. Aiming at the problems of more by-products and poor performance of the existing epoxy resin preparation, the invention provides the preparation method of the electronic-grade amine epoxy resin, which comprises the following steps: synthesizing a chlorohydrin ether intermediate from p-aminophenol and epichlorohydrin; meanwhile, a catalyst is added in the ring-opening reaction stage; carrying out removal of epoxy chloropropane; alkali metal hydroxide is added for a dehydrochlorination reaction, and a target product is generated in a closed-loop manner; and washing to remove excessive alkali metal hydroxides, and reacting to generate chlorides to obtain the electronic-grade amine epoxy resin. According to the method, the ring opening speed of phenolic hydroxyl is remarkably increased through the catalyst, so that epoxy chloropropane is fully reacted, and residues are reduced; according to the method, excessive epoxy chloropropane is removed, so that side reaction of epoxy chloropropane in a ring closing stage is avoided, generation of by-products is reduced to the greatest extent, operation is simple, and high-quality epoxy resin can be generated.

The invention discloses a surface coating modified calcium phosphate microsphere and a preparation method thereof, and belongs to the technical field of calcium phosphate microsphere preparation. The surface coating modified calcium phosphate microspheres are prepared from the following components in parts by weight: 60 to 68 parts of calcium phosphate ceramic powder, 20 to 32 parts of modified bioactive bodies, 8 to 12 parts of composite pore forming agents and 2 to 5 parts of binding agents, the modified bioactive body is prepared from vinyltriethoxysilane, butyl dibutyl phosphate, citric acid, calcium acetate, magnesium sulfate and polyether-ether-ketone fibers, and the composite pore-forming agent is prepared from octyl dimethyl tertiary amine, epoxy chloropropane, hydrolyzed soybean protein and starch. The calcium phosphate microspheres prepared by the method have excellent porosity and biological activity.

The invention relates to the technical field of functional board manufacturing, in particular to a damp-proof and wear-resistant composite board and a laminating process thereof. The composite material is prepared from 40-50 parts of dithiocar-bamate modified epoxy resin, 30-40 parts of nano silicon dioxide-carbon quantum dot modified polyurethane, 5-8 parts of a graphene-silane-metal organic framework compound, 2-4 parts of magnetic field oriented silicon carbide whiskers and 1-3 parts of self-repairing microcapsules. The modified epoxy resin is prepared from epoxy chloropropane and mercapto silane through a reaction, the graphene compound is embedded into the ZIF-8 nanoparticles, and the silicon carbide whiskers are directionally arranged through a 0.5-1T magnetic field during lamination; the plate is of a three-layer structure, covalent bonds are formed among layers through a silane coupling agent, and the plate has moisture-proof, wear-resistant and self-repairing functions. The composite material is low in water absorption rate, high in wear resistance frequency, high in microcrack repairing efficiency, high in interlayer bonding strength, capable of being stably used in high and low temperature environments, efficient in preparation process and suitable for the fields of high-end buildings, electronic equipment and the like, and the moisture-proof grade reaches IP67.

The invention discloses an organic silicon composite solid defoaming agent for space station water treatment and a preparation method of the organic silicon composite solid defoaming agent, and relates to the technical field of defoaming agents. The organic silicon composite solid defoaming agent for space station water treatment comprises the following raw materials in parts by weight: 25-35 parts of polydimethylsiloxane, 5-10 parts of water-soluble silicone oil, 10-15 parts of white carbon black, 3-5 parts of an emulsifier, 3-4 parts of a dispersant and 25-35 parts of a carrier. The preparation method comprises the following steps: reacting 1H, 1H-perfluorohexylamine with epoxy chloropropane to generate an intermediate 1, reacting the intermediate 1 with lauryl amine to generate an intermediate 2, and reacting the intermediate 2 with amino-polyethylene glycol-carboxyl to obtain the emulsifier. The prepared organic silicon composite solid defoaming agent for space station water treatment has excellent defoaming and foam inhibition performance and good water dispersibility.

The invention relates to the technical field of chemical production, in particular to a method for efficiently synthesizing epichlorohydrin. The method provided by the invention comprises the following steps: adding a mixed solution of chloropropene and methanol and part of hydrogen peroxide into a reactor; then injecting residual hydrogen peroxide through a middle-section feeding hole of the reactor; constant-temperature circulating water is adopted to control a front-section temperature control area of the reactor to be at a first temperature, a middle-section temperature control area of the reactor to be at a second temperature and a rear-section temperature control area of the reactor to be at a third temperature, and the third temperature, the first temperature and the second temperature are gradually increased in sequence. The method provided by the invention can effectively solve the problems of side reaction increase, too fast catalyst deactivation and the like caused by local overheating of the fixed bed reactor, and significantly improves product selectivity and production efficiency.

The invention discloses a lignin-based epoxy resin derived porous carbon composite electrode material and a preparation method and application thereof, and belongs to the technical field of electronic materials. Sodium lignin sulfonate, hydroquinone and epichlorohydrin are used as main raw materials, m-phenylenediamine is added for polycondensation to prepare a lignin-based epoxy resin polymer, then lignin-based epoxy resin derived porous carbon is obtained through pre-carbonization and high-temperature pyrolysis, finally, the porous carbon adsorbs aniline and then is subjected to in-situ polymerization, and the lignin-based epoxy resin derivative porous carbon is obtained. The lignin-based epoxy resin derivative porous carbon composite electrode material is obtained. The lignin-based epoxy resin derived porous carbon has a hierarchical pore structure, the specific surface area reaches 2287.87 m / g, and the mass specific capacitance of the polyaniline-introduced composite electrode material reaches 497.7 F / g. The composite electrode material has excellent electrochemical performance, the preparation process is safe and easy to implement, the cost is low, and the application prospect is wide.

According to the scheme, the expanded polytetrafluoroethylene artificial blood vessel with the anticoagulant coating and preparation and application are provided, firstly, groups such as carboxyl and amino are formed on the inner surface of the expanded polytetrafluoroethylene artificial blood vessel through co-auto-polymerization reaction of L-dopamine and polyethyleneimine in a Tris aqueous alkali, then epoxy chloropropane serves as a cross-linking agent, and the expanded polytetrafluoroethylene artificial blood vessel with the anticoagulant coating is prepared. Trihydroxymethyl methylamino propanesulfonic acid is cross-linked to the inner surface of the membrane, carboxyl and sulfonic acid groups on the surface of the membrane endow the expanded polytetrafluoroethylene artificial blood vessel with anticoagulation performance, meanwhile, the hydrophobic performance of the outer surface is reserved, anticoagulation finishing is conducted on the inner wall of the expanded polytetrafluoroethylene artificial blood vessel, and the hydrophobic performance of the outer wall of the blood vessel is reserved; the expanded polytetrafluoroethylene artificial blood vessel has an anticoagulation function and does not influence the growth of fiber cells and fiber connective tissues on the surface of the blood vessel.

The invention relates to a cellulose-chitosan-based lithium ion battery diaphragm and a preparation method and application thereof.The preparation method of the diaphragm comprises the steps that gamma-polyglutamic acid and polyamide epichlorohydrin are adopted for modifying chitosan, the hydrophilicity and the liquid absorption capacity of the chitosan are improved, polyvinylpyrrolidone is adopted for coating the chitosan, and the hydrophilicity and the liquid absorption capacity of the chitosan are improved; pVP is replaced in ethanol soaking to form micropores, so that the porosity of the modified chitosan is improved. Amino groups and hydroxyl groups of the modified chitosan are combined with catechol of the polydopamine and hydroxyl groups of the hydroxy propyl cellulose through hydrogen bonds and covalent bonds to form a chitosan-cellulose-PDA interpenetrating network, and the diaphragm material suitable for the lithium ion battery is finally prepared by combining hot-pressing shaping. The preparation method has the advantages that the balance between the mechanical property and the ion conduction property of the diaphragm is realized through multi-component compounding by utilizing the biocompatibility and renewability of natural macromolecules (cellulose and chitosan).

The invention provides a lignin extraction-sulfonic acid modification integrated preparation method based on eutecticevaporate solvent coupling microwaves, lignin sulfonate and application, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: mixing choline chloride, epichlorohydrin and 4-hydroxybenzenesulfonic acid, heating and stirring to obtain a deep eutectic solvent ternary system; the method comprises the following steps: adding biomass powder into a deep eutectic solvent ternary system, and reacting under a microwave condition; after the reaction is completed, filtering, and adjusting the pH value of the obtained filtrate to be neutral to obtain a mixed solution; and then adding an organic solvent into the obtained mixed solution for precipitation, filtering, washing and drying to complete lignin extraction-sulfonic acid modification. According to the method, in-situ grafting of sulfonic acid functional groups is realized in the lignin separation process through the ternary eutectic solvent in combination with microwave-assisted extraction, so that sulfonation modification of lignin is completed. After sulfonation modification, the obtained sulfonated lignin is applied to the drilling fluid, and the viscosity reduction effect can be achieved.

The invention relates to the technical field of antistatic agents, and particularly discloses an oil product antistatic agent and a preparation method thereof. The modified polysulfone is obtained by mixing and treating the following raw materials in parts by mass: 35-40 parts of xylene, 20-25 parts of composite polyamine, 15-20 parts of polysulfone, 5-8 parts of oligomeric dopamine and 1-2 parts of an activating agent, the preparation method comprises the following steps: taking composite polyamine, mixing with oligomeric dopamine, dispersing with xylene, then adding an activator, stirring, then adding polysulfone, and continuously treating, thereby obtaining the product. The preparation method of the composite polyamine comprises the following steps: taking epichlorohydrin, dispersing, adding a mixed amine source, heating, adding sodium carbonate, continuously stirring, cooling, adding a deprotection agent, filtering after treatment, taking a liquid part, drying by distillation, washing, drying again, and grinding to obtain the composite polyamine. The oil product antistatic agent prepared by the invention has relatively strong antistatic capability and relatively long duration time, and can form a firmer double-electric-layer structure.

The invention relates to the technical field of fabrics, and discloses a cool antistatic comfortable fabric and a preparation method thereof.The cool antistatic comfortable fabric is obtained by reacting pentanebis (glycine), 1, 3-bis (3-glycidyl ether oxypropyl) tetramethyldisiloxane, epoxy chloropropane and the like to obtain an epoxy quaternization finishing agent and finishing a cotton fabric. The epoxy quaternization finishing agent contains a flexible siloxane structure, can improve the softness and wrinkle resistance of the cotton fabric, contains quaternary ammonium salt and carboxyl hydrophilic groups, enables the cotton fabric to keep good hydrophilicity and cool hand feeling, contains quaternary ammonium salt cations, can increase the conductivity of the surface of the cotton fabric, and improves the anti-wrinkle performance of the cotton fabric. The surface resistivity is reduced, so that the anti-static performance is improved, and the cotton fabric still keeps good soft anti-wrinkle performance and anti-static performance after being washed for multiple times.

The invention discloses a flame-retardant and self-repairing wood epoxy coating as well as a preparation method and application thereof, and belongs to the technical field of epoxy resin. The preparation method specifically comprises the following steps: (1) uniformly mixing vanillin, epichlorohydrin and tetrabutylammonium bromide, reacting, cooling, dropwise adding a NaOH aqueous solution, continuously reacting, washing, drying, precipitating and drying again to obtain bio-based epoxy resin for later use; (2) uniformly mixing methanol and hydrochloric acid, heating, carrying out condensation reflux, adding gamma-aminopropyltriethoxysilane, reacting, cooling, adding tetrahydrofuran, washing and carrying out vacuum drying to obtain polyhedral oligomeric silsesquioxane; and (3) dissolving polyhedral oligomeric silsesquioxane in the organic solvent, adding the bio-based epoxy resin, uniformly stirring, standing and curing to obtain the composite material. According to the invention, vanillin is used for constructing the epoxy resin containing imine bonds, so that the self-repairing and excellent flame-retardant properties of the epoxy resin are realized.

The invention discloses a zinc-bromine flow battery multifunctional bipolar plate and a preparation method and application thereof.The method comprises the steps that polyaniline is added into a cetyltrimethylammonium bromide ethanol solution, after stirring and ultrasonic treatment, a mixed solution is obtained and sprayed to the positive electrode side of a pretreated polypropylene bipolar plate, and after drying, the zinc-bromine flow battery multifunctional bipolar plate is obtained; the polyaniline modified polypropylene bipolar plate is obtained; the preparation method comprises the following steps: dissolving beta-cyclodextrin in a NaOH solution, adding epoxy chloropropane, stirring for reaction, washing to be neutral, drying, grinding and sieving to obtain a cyclodextrin polymer, dispersing the cyclodextrin polymer in a Nafion solution to obtain a cyclodextrin polymer solution, spraying the cyclodextrin polymer solution on the negative electrode side of a polyaniline modified polypropylene bipolar plate, and drying to obtain the multifunctional bipolar plate of the zinc-bromine flow battery. Polyaniline is loaded on the positive electrode side of the bipolar plate to reduce a bromine permeation source and bromine reaction activation energy, a cyclodextrin polymer Nafion solution is used for modifying and stabilizing the pH value of an electrolyte on the negative electrode side, uniform and compact deposition of zinc is promoted, formation of sharp dendrites is reduced, and the electrochemical performance and long-term stability of the battery are improved.

The invention discloses a preparation method of high-viscosity cationic starch, which belongs to the technical field of modified starch, and comprises the following steps: crosslinking epichlorohydrin, ball-milling and cationizing; the epoxy chloropropane crosslinking comprises the following steps: mixing starch, calcium hydroxide and deionized water, stirring at 40-50 DEG C, adding sodium stearoyl lactylate, stirring at 50-55 DEG C, naturally cooling to room temperature, adding sodium chloride and epoxy chloropropane, stirring, dropwise adding a potassium hydroxide aqueous solution, stirring, adjusting the pH value to 6, filtering, taking filter residues, washing and drying to obtain crosslinked starch; in the step of ball milling, calcium hydroxide, sucrose fatty acid ester SE-11 and deionized water are mixed and then subjected to ball milling, and a ball-milled material is obtained; the prepared high-viscosity cationic starch is high in paste liquid viscosity and cationic substitution degree, good in paste liquid viscosity stability, uniform in substitution degree and paste liquid viscosity, high in reaction efficiency in cationization and low in alkali consumption.

The invention discloses a porous olivine tundish dry material and a preparation method thereof, and belongs to the technical field of tundish dry material processing, the porous olivine tundish dry material specifically comprises the following raw materials by mass: 80-100 parts of a composite sand material, 2-3 parts of silicon powder, 10-15 parts of a composite binder, 15-20 parts of modified aerogel and 4-7 parts of a sintering promoter, heat-resistant whiskers are prepared through a molten salt method, and the porous olivine tundish dry material is prepared through a hot melt method. The preparation method comprises the following steps: preparing a composite binder from a dry tundish material, carrying out centrifugal spinning to obtain modified zirconium oxide fibers with a hollow structure, and further preparing modified aerogel from the modified zirconium oxide fibers, aluminum chloride hexahydrate, hydroxyethyl cellulose and epoxy chloropropane, so that the high temperature resistance and mechanical properties of the cured dry tundish material are improved; and the mechanical property is also improved.

The invention discloses a Schiff base epoxy oligomer chain extender as well as a preparation method and application thereof. The preparation method of the Schiff base epoxy oligomer chain extender comprises the following steps: adding p-hydroxybenzaldehyde and p-hydroxyaniline into ethanol, reacting at 30-70 DEG C for 2-5 hours, and performing suction filtration to obtain a 4-((4-hydroxybenzylidene) amino) phenol intermediate; and mixing the 4-((4-hydroxybenzylidene) amino) phenol intermediate, epoxy chloropropane and a catalyst, reacting at 80-100 DEG C for 3-7 hours, cooling to 50-70 DEG C, dropwise adding a strong alkali solution, reacting for 4-8 hours after dropwise adding, washing with deionized water, retaining an organic layer, and carrying out rotary evaporation on the organic layer to obtain the product. The rigidity, toughness and heat resistance of the modified nylon 6 prepared by applying the Schiff base epoxy oligomer chain extender are improved, and the modified nylon 6 still has processability similar to that of nylon 6.