84 results about "Allylamine" patented technology

The application belongs to the technical field of lithium ion battery adhesives, and particularly relates to a hyperbranched network polyacrylic acid resin special for silicon-carbon negative electrodes, a preparation method and application thereof. The hyperbranched network polyacrylic acid resin special for silicon-carbon negative electrodes comprises, by mass fraction, 3-10 parts of water-based acrylic acid resin, 4-10 parts of monomer A, 2-6 parts of monomer B, 2-6 parts of monomer C, 60-80 parts of solvent, 0.1-0.2 parts of chain extender, 1-8 parts of crosslinking agent and 0.5-1 part of silane coupling agent. The monomer A is an acrylic ester monomer, the monomer B is an acrylamide monomer, the monomer C is at least one selected from an allyl amine monomer and an acrylonitrile monomer, and the chain extender is at least one selected from dodecyl mercaptan and 2-mercaptoethanol. The polyacrylic acid resin has high viscosity and peeling strength, and the prepared lithium ion battery negative electrode material has high discharge specific capacity and cycle performance.

The invention relates to a selective nanofiltration membrane as well as a preparation method and application thereof. The selective nanofiltration membrane comprises a support layer and a separation layer, the separation layer is obtained through interfacial polymerization of an oil-phase reactant and a water-phase reactant; the water-phase reactant comprises a negatively charged monomer and a positively charged monomer; the positively charged monomer comprises any one or a combination of at least two of polyvinylamine, polyethyleneimine, diethylenetriamine, water-soluble chitosan, quaternized polyethyleneimine, polyallylamine or triethylene tetramine. According to the method, monomers with different charges are added into a water phase, so that the nanofiltration membrane is wholly charged and neutral, the interception of sodium sulfate can be effectively reduced, the interception of antibiotics is increased, and the separation of the antibiotics and inorganic salts can be efficiently promoted.

A geopolymer precursor includes an alkaline reactive solid material containing aluminum, silicon, and oxygen, and a fluid loss control material having an ionic stability property that has a first value in water and a second value in a 3M solution of NaOH, wherein a ratio of the second value to the first value is in a range of 0.5 to 2.0. The fluid loss control material may be, or may include a crosslinked polymer, which may include a reaction product of one or more of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N‑dimethylacrylamide, N,N‑diethylacrylamide, vinyl acetate, or another monomer, and a crosslinker including one or more of methylene bisacrylamide, triallyl amine, pentaerythritol allyl ether, triallyl-triazine-trione, or another material. The geopolymer precursor may include an activator, an alkaline solution having pH of at least about 9, or both.

The invention discloses a preparation method of plant-based polyester fibers, and relates to the technical field of high polymer materials. When the plant-based polyester fiber is prepared, firstly, phosphorus-modified dopamine is synthesized by taking dopamine hydrochloride and sodium hypophosphite as raw materials; carrying out copolymerization on the phosphorus-modified dopamine, terephthalic acid, ricinoleic acid and 1, 3-propylene glycol to prepare modified plant-based polyester; the preparation method comprises the following steps: synthesizing 2-bornyl-4, 6-dichloro-1, 3, 5-triazine from aminated carbon nanotubes, further synthesizing 2-bornyl-4, 6-dichloro-1, 3, 5-triazine from L-borneol and 2, 4, 6-trichloro-1, 3, 5-triazine, reacting the 2-bornyl-4, 6-dichloro-1, 3, 5-triazine with the aminated carbon nanotubes, and modifying with allylamine to obtain modified carbon nanotubes; finally, the modified plant-based polyester, the modified carbon nanotubes and auxiliaries are subjected to blending extrusion, melt spinning and treatment through copper nitrate and ascorbic acid, and the plant-based polyester fiber is prepared. The plant-based polyester fiber prepared by the invention has excellent antibacterial property, flame retardant property and mechanical property.

An aspect of the present application provides a CMP polishing liquid for polishing polysilicon, the CMP polishing liquid containing abrasive grains and a cationic polymer, the cationic polymer including at least one selected from the group consisting of a polymer A having a main chain including a nitrogen atom and a carbon atom and a hydroxyl group bonded to the carbon atom and an allylamine polymer B. Another aspect of the present application provides a polishing method including a step of polishing a polishing target material using the CMP polishing liquid.

The surface treatment agent is designed to improve adhesion to a coating film. This agent contains at least one metal component (A) selected from the group consisting of zirconium, titanium, and hafnium, as well as an alkyldiallylamine polymer (C). The metal component (A) has a content ranging from 10 ppm to 10,000 ppm by mass, in terms of metal element, relative to the total mass of the surface treatment agent. Furthermore, the alkyldiallylamine polymer (C) includes a segment with a heterocyclic structure represented by formula (1a) or (1b).

The application relates to a preparation method of a biosensor. The application relates to a preparation method of a portable pesticide detection biosensor based on acetylcholinesterase (AChE)@poly(allylamine hydrochloride)-hydrogen bond organic framework (PAH-HOF) and application of the biosensor in on-site rapid chlorpyrifos detection, and belongs to the technical field of biosensors. According to the method, AChE is combined with poly(allylamine hydrochloride) (PAH) to change the surface charge and promote self-assembly of the AChE and the hydrogen bond organic framework (HOF), so that an AChE@PAH-HOF composite material with high catalytic activity, high embedding rate and high stability is formed; then the material is integrated into a water-retaining glycerol-sodium alginate hydrogel (G-SA) matrix to construct a disc-shaped sensor. The sensor can be attached to the surface of plants and used for long-term in-situ monitoring of organophosphorus pesticides. In combination with an image processing algorithm, the system realizes accurate tracking of the chlorpyrifos degradation process on the surface of tomato plants, and the detection limit reaches 1 ng / mL. The application provides non-invasive and low-cost technical support for crop health management and sustainable precision agriculture.

The application discloses a kind of using cobalt catalyst by unreported double migration coupling strategy, realizes migration asymmetric nitrogen hetero Nozaki-Hiyama-Kishi (aza-NHK) reaction, and the selective preparation α-chiral (E)-allyl amine starting from simple and easy to obtain ortho halogen phenyl ethylene or corresponding E / Z-alkyl bromide or its mixture belongs to the field of organic chemistry and medicinal chemistry.The application under the action of metal cobalt source, ligand, organic additive, inorganic additive etc., makes cyclic sulfonamide and ortho alkenyl substituted aryl halide or alkenyl halide react in organic solvent, to obtain a series of polysubstituted olefins with excellent regioselectivity, stereoselectivity and good yield, which can be used as active drug molecules and important synthetic intermediates.The application uses cheap transition metal cobalt as catalyst, and uses ortho alkenyl substituted aryl iodine and cyclic sulfonamide as raw material, and the reaction condition is warm, simple operation, and good functional group compatibility.

The application discloses a kind of S-delta-substituted caprolactam chemical / enzyme series preparation method, and the specific preparation method is: 1-substituted high allyl amine occurs dynamic kinetic resolution reaction with acrylic ester compound under the catalysis of alkaline protease (special treatment) and generates S-acryl (1-substituted high allyl) amine, then the product occurs intramolecular olefin metathesis under the catalysis of Grubbs reagent and finally generates S-delta-substituted caprolactam shown in formula (1), wherein, substituent R is phenyl, halogenated phenyl or C2-C12 alkyl.The application has mild reaction condition, is conducive to reducing the equipment requirement of preparation process, improves synthesis safety and economy;Secondly, the reaction course of the method is simple, and single configuration S-delta-substituted caprolactam can be obtained by one-pot reaction, with very high atom economy.

The application provides an antibacterial non-woven fabric material containing lipophilic monomers, a preparation method thereof, and a mask prepared from the material. The method comprises the following steps: A, preparing master batch: adding polypropylene granules, diallylamine, and a second monomer into a mixer in sequence, stirring and uniformly mixing to obtain master batch mixture, wherein the second monomer is a lipophilic monomer; then performing irradiation, extraction, and halogenation; B, mixing: adding the halogenated master batch, polypropylene granules, and additives into the mixer, stirring and uniformly mixing to obtain spinning mixture; C, extruding and melting; D, spinning; E, post-treatment and webbing; and F, winding and finishing to obtain finished non-woven fabric. The antibacterial non-woven fabric product has good bacteriostatic and sterilization effects and is safe and environmentally friendly.

The invention relates to a hybrid nanocarrier system comprising engineered metal nanoparticles (MeNP), a flavonoid (Fl), a Raman-active molecule (RAM), poly(allylamine hydrochloride) (PAH), genetic material (GM), and poly(styrene sulfonate) (PSS), designed for use in fields such as gene therapy, cancer treatment, chemotherapy, treatment of genetic diseases, innovative vaccine technologies, the production of innovative antibiotics for antibacterial and antimicrobial therapies, drug delivery, the dietary supplement market, Raman imaging systems, biotechnological applications, and the agrochemical industry.

The invention relates to the field of textile printing materials, and discloses a preparation method of water-based digital printing bottoming white adhesive cement, which comprises the following steps: mixing water-based acrylate emulsion with an auxiliary agent and a macromolecular quaternary ammonium salt color fixing agent to obtain a premix; mixing the premix with filling powder to obtain dispersion liquid; and adding a curing agent and a thickening agent into the dispersion liquid and mixing. The macromolecular quaternary ammonium salt color fixing agent is prepared by reacting an organic silicon modified allylamino phosphorus-containing bromine substituent and bis (dimethylamino) phosphoric acid hydrogenated cardanol ester; the organic silicon modified allylamine phosphorus-containing bromine substituent is prepared by preparing the allylamine phosphorus-containing bromine substituent from allylamine, phenyl dichlorophosphate and 2-bromoethylamine hydrobromide as raw materials and then reacting the allylamine phosphorus-containing bromine substituent with heptamethyltrisiloxane. The white rubber cement prepared by the preparation method is bright in color and clear in pattern, can be recycled and reused, and has the advantages that the white rubber cement is easy to prepare, the cost is low, and the application prospect is wide. The color fixing fastness, the flame-retardant and fire-proof performance, the net blocking prevention performance and the hand feeling comfort degree are good.

The application belongs to the technical field of layered composite film preparation, and provides an online coating high-barrier biaxially stretched polyethylene film and a preparation method and application thereof. First, polyethylene multilayer sheet is co-extruded and longitudinally stretched, and a to-be-coated base film is obtained through corona activation; then, nano clusters are constructed from phytic acid and zirconium salt, and a hybrid dispersion liquid is formed by introducing tannic acid, polyallylamine hydrochloride and epoxy silane; at the same time, sodium-based montmorillonite and colloidal silicon dioxide are compounded under the action of tannic acid and treated by silane to obtain a barrier dispersion liquid; the barrier dispersion liquid, polyvinyl alcohol, polyvinylpyrrolidone and polyhydric alcohol are prepared into an aqueous coating composition, which is coated on the base film online, dried and solidified, and then transversely stretched to obtain a film with stable oxygen and water vapor barrier properties and suitable for packaging applications.

The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.

The application discloses an allyl amine compound and a preparation method thereof. Under the condition of no water and no oxygen, MBH alcohol compound and tetra(dimethylamino)diboron are added into 1,4-dioxane, and after stirring reaction at 100 DEG C for 12 hours, a reaction solution is obtained, and the reaction solution is separated and purified to obtain the allyl amine compound. Compared with the prior art, the preparation method does not need the participation of a catalyst, the Lewis acidity of the reactant itself is used to realize dehydration coupling to construct a C-N bond, the reaction condition is relatively mild, the substrate universality is high, various kinds of MBH alcohol compounds modified by different functional groups can be subjected to allylation with high yield, and the application has potential application value in fine chemistry and industrial production.

The invention discloses a hydrophilic corrosion and scale inhibitor as well as a preparation method and application thereof, and belongs to the technical field of macromolecular water treatment. The hydrophilic corrosion and scale inhibitor has the following structure, in addition, the invention also provides a preparation method of the hydrophilic corrosion and scale inhibitor, which comprises the following steps: mixing sodium lignin sulfonate, formaldehyde and N-methylallylamine, and reacting under a heating condition; the preparation method of the corrosion and scale inhibitor comprises the following steps: firstly, adding 2, 3-epoxypropyl trimethyl ammonium chloride, reacting at 50-55 DEG C, heating to 80-90 DEG C, adding itaconic acid and maleamic acid, mixing, dropwise adding an initiator, and reacting at 80-90 DEG C to obtain the corrosion and scale inhibitor. The invention also provides application of the hydrophilic corrosion and scale inhibitor or the hydrophilic corrosion and scale inhibitor prepared by the preparation method in oil field water treatment. The hydrophilic corrosion and scale inhibitor provided by the invention can better realize corrosion and scaling.

In one aspect, provided is an etchant composition that is able to reduce etching nonuniformity. An aspect of the present disclosure relates to an etchant composition for etching of a layer to be etched that contains at least one metal. The etchant composition contains an etching inhibitor, an acid including at least a nitric acid, and water and has a pH of 1 or less. The etching inhibitor is at least one nitrogen-containing compound selected from the group consisting of polyalkyleneimine and a polymer having a constitutional unit derived from diallylamine.

The application provides an ultrasonic response piezoelectric ionic hydrogel and application thereof, and the hydrogel is formed by cross-linking and solidification of a precursor solution under ultraviolet irradiation; components of the precursor solution include a photosensitive polymer, an ionic polymer, a photoinitiator and a solvent; the photosensitive polymer includes any one or a combination of at least two of polyether F127 diacrylate, polyhydroxyethyl methacrylate, polyethylene glycol dimethyl acrylate, methacrylated gelatin or methacrylated collagen; and the ionic polymer includes any one or a combination of at least two of epsilon-polylysine, polyethyleneimine hydrochloride, polyallylamine hydrochloride, polyquaternary ammonium salt-10 or cationic guar gum. The application uses ultrasonic waves as an external remote driving signal to non-invasively and painlessly activate the piezoelectric ionic effect of the hydrogel, generate detectable periodic voltage and current signals in the hydrogel, and has excellent treatment effect on acne and infected wound repair.

The application discloses a process for preparing flame-retardant polyethylene plastic from waste polyethylene plastic, and relates to the technical field of high polymer materials. In the preparation of the flame-retardant polyethylene plastic, waste polyethylene is extruded and granulated to obtain polyethylene masterbatch; the polyethylene masterbatch is catalytically pyrolyzed, and then is reacted with potassium permanganate to obtain hydroxylated carbon nanotubes; the hydroxylated carbon nanotubes are reacted with 1-(chloro-methyl phosphonyl) ethylene, and then are reacted with (mercapto methyl) triethoxysilane to obtain modified carbon nanotubes; the polyethylene masterbatch is irradiation-grafted with 2-hydroxy-4-propenyl benzophenone and N,N-diethyl allylamine, and then is reacted with chloromethyl triethoxysilane to obtain modified polyethylene; the modified carbon nanotubes and the modified polyethylene are melt-extruded, and then are injection-molded to obtain flame-retardant polyethylene plastic after water treatment. The flame-retardant polyethylene plastic prepared by the application has good flame-retardant performance, antibacterial performance, tensile strength and anti-aging performance.

The invention relates to the technical field of research, development and manufacturing of functional films, and discloses an eleven-layer co-extruded film, a preparation process and application in aviation cables, and the preparation process specifically comprises the following steps: by taking heptamethyl hydrogen-containing POSS, diallylamine, diethyl phosphite and 10-undecenal as raw materials, carrying out hydrosilylation, Kabachnik-Fields and alkenyl epoxidation reaction to obtain the eleven-layer co-extruded film. The preparation method comprises the following steps: synthesizing a halogen-free reaction type phosphorus-POSS-nitrogen synergistic flame retardant, and carrying out covalent bond interaction on the halogen-free reaction type phosphorus-POSS-nitrogen synergistic flame retardant and amino-terminated functional groups in PA6 resin and PA66 resin through an epoxy-amino ring-opening reaction to prepare flame-retardant PA master batches; the flame-retardant PA master batch is used as a raw material of the eleven-layer co-extrusion film, and an eleven-layer co-extrusion blow molding process is adopted to prepare the eleven-layer co-extrusion film. The flame retardant property of the eleven-layer co-extrusion film is remarkably improved, and meanwhile, the beneficial technical effect of remarkably enhancing the high-temperature resistance of the eleven-layer co-extrusion film is achieved.

The invention discloses a PVC pipe with a stain-resistant coating and a preparation method of the PVC pipe, and belongs to the field of polymer pipes. A PVC pipe with a stain-resistant coating comprises a PVC pipe body and the stain-resistant coating wrapping the surface of the PVC pipe body, and the stain-resistant coating is prepared from, by weight, 13-22 parts of PVC resin, 5-10 parts of polytetrafluoroethylene modified polyurethane, 0.2-0.5 part of an anti-ultraviolet agent and 90-110 parts of a solvent; the polytetrafluoroethylene modified polyurethane is prepared from a PVC (Polyvinyl Chloride) emulsion, polytetrafluoroethylene micro powder and polyurethane acrylate, and the polytetrafluoroethylene micro powder is grafted with acrylic acid and allylamine. The coating has the advantages that the surface stain resistance of the PVC pipe is improved, and meanwhile, the adhesive force of the coating and the pipe is kept.

The application provides a method for synthesizing allyl tertiary amine, which can selectively synthesize allyl tertiary amine from alkyl secondary amine through allyl amination with high efficiency. The application uses metal-phosphine complex as a homogeneous catalyst, and simultaneously adds a cocatalyst ketoxime to selectively catalyze the cleavage of the primary allyl C-H bond of olefin to synthesize allyl amine. The method can be extended to a wide range of olefins, has atom economy, makes the synthesis of allyl tertiary amine compounds simpler and more efficient, the catalyst can be recycled, and excellent chemical region selectivity and functional group tolerance are exhibited.

The invention provides a method for synthesizing chiral allylamine through nickel-catalyzed hydrogen alkenylation reaction of alkenyl amide and alkyne, and belongs to the field of organic synthesis. The method comprises the following steps: reacting a compound 1 and a compound 2 in a solvent in the presence of a catalyst, a ligand, an alkaline reagent, an additive and a hydrogen source to obtain compounds 3-5. The method is easy to operate and environmentally friendly, the obtained product is high in yield, purity and ee value, the substrate is good in universality and high in enantioselectivity, and preparation of an alkyl metal catalyst is avoided.

The invention belongs to the field of organic synthesis, and discloses a hyperbranched formaldehyde-free fastness improver, which is prepared from the following raw materials: hyperbranched polyamidoamine (HPAMAM), dimethyl diallyl ammonium chloride (DMDAAC), diallyl amine and polyether amine. The mass ratio of the hyperbranched polyamidoamine to the dimethyl diallyl ammonium chloride to the diallyl amine to the polyether amine is (5-10): (30-50): (5-15): (5-10); the number of terminal amino groups and imino groups of the hyperbranched polyamidoamine is 15-17. According to the fastness improver, hyperbranched polyamidoamine is taken as a core, DMDAAC and diallylamine are grafted to a hyperbranched structure, a high-density cation and flexible chain segment synergistic system is constructed, the performance bottleneck of a traditional formaldehyde-free auxiliary in the aspect of wet rubbing fastness is broken through, the wet rubbing fastness of sensitive colors such as bright red and turquoise blue is remarkably improved, and the color fastness improver has a wide application prospect. Meanwhile, the advantages of being environmentally friendly, soft, hydrophilic and the like are kept, and the method has a good industrialization prospect.

In one aspect, an etching method is provided that can suppress the variation in etching rate between the first use of the etching liquid and the second use of the etching liquid, even when the etching liquid is reused. [Solution] In one aspect, the present disclosure relates to an etching method comprising the step of etching a layer to be etched that contains a Group 6 element metal using an etching solution containing phosphoric acid, nitric acid, and the following component A, and when the etching solution contains a Group 6 element metal, the etching method further comprises the step of adding the following component A to the etching solution before the etching: Component A: at least one compound selected from the group consisting of a compound having a repeating unit derived from ethyleneimine, a compound having a repeating unit derived from allylamine, and a compound having a repeating unit derived from diallylamine

The invention provides a method for preparing a perfluoropolyether silane compound through a reductive amination reaction and application of the perfluoropolyether silane compound. The preparation method comprises the following steps: mixing 2, 2-dimethyl-3-hydroxypropionaldehyde, diallylamine and a solvent, adding a reducing agent, and reacting at room temperature to obtain a compound 1; the preparation method comprises the following steps: mixing perfluoropolyether carboxylic acid, N, N-dimethylformamide and a solvent, dropwise adding an acylating chlorination reagent, reacting, and concentrating under reduced pressure to obtain perfluoropolyether acyl chloride; adding the compound 1, an alkaline substance and a solvent into another reaction flask, dropwise adding perfluoropolyether acyl chloride into a mixture of the compound 1, the alkaline substance and the solvent, dropwise adding complete fluoropolyether acyl chloride, and reacting at room temperature to obtain a compound 2; and mixing the compound 2, trimethoxysilane, a catalyst and a solvent, reacting, and purifying to obtain the perfluoropolyether silane compound. By adopting the scheme provided by the invention, the perfluoropolyether-based silane compound can be obtained under mild reaction conditions, and the perfluoropolyether-based silane compound has excellent wear resistance.

The invention discloses a high-strength tungsten-copper alloy and a preparation method thereof, and relates to the field of alloys. When the high-strength tungsten-copper alloy is prepared, tungsten, copper and cerium are subjected to mixing, ball milling, pressing and compression molding, and a tungsten-copper alloy matrix is prepared; the preparation method comprises the following steps: reacting vinyl (chloromethyl) dimethylsilane with 4-methylaminopyridine to obtain a pyridine monomer; the preparation method comprises the following steps: reacting N, N-diethylallylamine with 2, 6-di-tert-butyl-4-bromomethylphenol to prepare an anti-aging monomer; mixing an anti-aging monomer, a pyridine monomer, butyl methacrylate, N, N-dimethylformamide, the initiator solution and the emulsifier solution to prepare a surface treatment solution; the preparation method comprises the following steps: treating a tungsten-copper alloy matrix with nitric acid, smearing a surface treatment solution on the surface, curing, and carrying out surface treatment with dimethyldimethoxysilane to obtain the high-strength tungsten-copper alloy. The high-strength tungsten-copper alloy prepared by the invention has waterproof and anti-aging capabilities.

The application discloses a method for synthesizing alpha-tertiary carbon hyperallylic amine from non-activated olefin by nickel catalysis, which comprises the following steps: in an organic solvent, using metal nickel as a catalyst and metal manganese as a reducing agent, making imine and non-activated olefin to generate alpha-tertiary carbon hyperallylic primary amine through oxidative cyclization coupling. The application has the advantages of simple preparation of raw materials, cheap and easy purchase of catalyst and reducing agent, mild reaction condition, non-toxic and harmless, high reaction selectivity and yield, good compatibility of substrate functional groups and wide application range. The application can well realize the oxidative cyclization reaction of olefin and imine. Under the optimized reaction condition, the yield of the target product can be up to 92% after separation.

The application relates to the technical field of organic synthesis, and provides a synthesis method of chiral allylamine and application thereof, which takes isoegual and chiral tert-butylsulfonamide as initial raw materials, synthesizes an enamine intermediate M1, adopts a silyl ether protecting group to protect a phenolic hydroxyl group to obtain an intermediate M2, then carries out a Grignard reaction on the intermediate M2 to obtain an intermediate M3, then removes a sulfinyl group from the intermediate M3 to obtain an intermediate M4, and then acetylates to obtain an intermediate M5, and finally removes a silyl ether protecting group from the intermediate M5 to obtain the chiral allylamine. The synthesis method can reduce the preparation cost of the chiral allylamine, is beneficial to industrialized production, optimizes stereoselectivity, and omits a chiral resolution step, and the chiral allylamine can be used for synthesizing colchicine.

The application relates to the technical field of fiber modification, and particularly discloses a moisture-absorbing, heat-releasing and antistatic multifunctional acrylic fiber as well as a preparation method and application thereof. The acrylic fiber is obtained through pretreatment, alkaline hydrolysis, acid neutralization, grafting of double bonds and crosslinking reaction of ordinary acrylic fiber. In the alkaline hydrolysis, the alkali liquor is one of sodium hydroxide, potassium hydroxide, sodium bicarbonate, potassium bicarbonate, sodium carbonate and potassium carbonate, and the mass concentration of alkali metal in the alkali liquor is 6-20%; in the acid neutralization, the acid solution is one of acetic acid and carbonic acid, and the mass concentration is 20-30%; in the grafting of double bonds, the addition amount of the nucleophilic reagent is 25-80% of the mass of the acrylic fiber, and the nucleophilic reagent is one of allylamine, diallylamine and methylallylamine; and in the crosslinking reaction, the mass concentration of the hydrophilic monomer solution is 25-40%. The obtained acrylic fiber has higher moisture absorption, stronger material combination stability, more persistent moisture absorption and heat release effect, and is almost not affected by the washing times.