50 results about "Methylphosphonic acid" patented technology

The invention discloses a degradable packaging material and a preparation method thereof, and relates to the field of packaging materials. When the degradable packaging material is prepared, after vermiculite powder is grafted with chloromethyltrimethoxysilane, the vermiculite powder reacts with piperazine, bis (2-chloroethyl) methylphosphonate and ethylenediamine, and modified vermiculite powder is obtained; oxidizing corn starch with sodium periodate to obtain modified corn starch; the preparation method comprises the following steps: reacting polyvinyl alcohol, allyl trimethyl ammonium chloride and 5-allyl mercapto-[1, 3, 4] thiadiazole-2-amine to obtain modified polyvinyl alcohol; and uniformly mixing the modified corn starch, glycerol, modified polyvinyl alcohol, modified vermiculite powder and zinc chloride to obtain the degradable packaging material. The degradable packaging material prepared by the invention has excellent flame retardance, antibacterial property, mechanical property and rapid degradability.

The invention discloses a method for removing metal impurities in wet-process phosphoric acid by adopting a mixed solvent, which comprises the following steps: uniformly mixing a solvent A and a solvent B, then mixing with a raw material wet-process phosphoric acid, extracting, separating, washing, reversely extracting and concentrating to obtain a finished product of 85% phosphoric acid, the solvent A is one or a mixture of more of methyl isobutyl ketone, n-butyl alcohol and TBP; and the solvent B is one or a mixture of more of dimethyl heptyl methylphosphonate, bis (2, 4, 4-trimethylpentyl) phosphonic acid, 2-ethylhexyl phosphate mono 2-ethylhexyl ester, dioctyl phosphate and dialkyl dithiophosphonic acid, and the solvent B is one or more of dimethyl heptyl methylphosphonate, bis (2, 4, 4-trimethylpentyl) phosphonic acid, 2-ethylhexyl phosphate mono 2-ethylhexyl ester, dioctyl phosphate and dialkyl dithiophosphonic acid. The method is simple in process, environment-friendly and low in production cost, the solvent A and the solvent B are mixed according to the proportion, the removal efficiency of metal impurities and the product purity are improved, the product obtained through the method is high in purity, the industrial requirements of high-end electronic products, food, medicine, electronics, new energy and the like are met, and the method is suitable for industrial production. The additional value of the purified phosphoric acid is improved.

The present invention relates to an enzymatically catalyzed method for producing L-glufosinate or a phosphoester thereof. The method includes reacting an activated L-homoserine HA with a substrate S selected from methylphosphinic acid and esters thereof. Sulfhydrylase enzyme E1 is used for the enzymatic catalysis. The invention makes accessible new substrates for the enzymatic production of L-glufosinate and its phosphoesters.

The invention relates to the technical field of pesticide production, and particularly discloses a preparation process of glufosinate-ammonium intermediate 3-(methyl hydroxyl phosphonyl) propionaldehyde. The preparation method comprises the following steps: 1, carrying out addition reaction on diethyl methylphosphonite and acrylic acid in absolute ethyl alcohol to generate 3-[ethyoxyl (methyl) phosphonyl] propionate; in the second step, 3-[ethyoxyl (methyl) phosphonyl] propionate is subjected to a hydrosilylation reaction in an oriented mode, and 3-triethyl siloxy-3-ethyoxyl propyl methyl ethyl phosphonate is generated; and 3, carrying out a simple dilute acid hydrolysis reaction to obtain the 3-(methyl hydroxyl phosphonyl) propionaldehyde. According to the method, a three-step reaction route of addition-hydrosilylation-hydrolysis is adopted, and the acrylic acid is used for replacing the traditional high-toxicity raw material acrolein, so that the toxicity risk is avoided from the source, the yield of the target glufosinate-ammonium intermediate is remarkably improved, the total yield of the three-step reaction can reach 95% or above, and the method is suitable for industrial production. And an efficient and green brand-new technical scheme is provided for large-scale production of glufosinate-ammonium.

The invention discloses a high-safety lithium ion battery electrolyte and a lithium ion battery prepared from the high-safety lithium ion battery electrolyte, and belongs to the technical field of lithium ion batteries. An additive O, O-diethyl (3-ethoxythiophene-2-yl) methylphosphonate is added during preparation of the lithium ion battery electrolyte, so that the high-safety lithium ion battery electrolyte is prepared; a cross-linking reaction or a polymerization reaction can be carried out under a high-temperature condition to form a carbonaceous protective layer, cooling is realized through an endothermic reaction in the forming process of the carbonaceous protective layer, and active substances in the battery are isolated after the carbonaceous protective layer is formed; the battery safety problem caused by higher heat production and higher battery combustion risk when the lithium ion battery is used for a large-scale energy storage system is solved.

The invention discloses a hydroxymethyl phosphonate flame retardant and a preparation method and application thereof.The method comprises the steps that phosphorus trichloride and epoxide serve as starting raw materials and react in the presence of a catalyst to generate trichloro alkyl phosphite, the obtained triester structure is dropwise added into phosphorous acid, heat preservation reaction is conducted, and dichloro alkyl phosphite is obtained; and adding a catalyst 2 into the diester product, heating, slowly adding paraformaldehyde, and continuously reacting to obtain the hydroxymethyl phosphate flame retardant. The method is low in cost, mild in reaction condition, solvent-free, capable of being efficiently completed without extreme conditions, high in reaction speed and high in conversion efficiency, is compatible with existing chemical production equipment, and provides a solid foundation for large-scale industrial production.

The invention discloses a preparation method and application of a triazole phosphate type corrosion and scale inhibitor, and relates to the technical field of industrial water treatment chemicals. The compound is prepared by a three-step synthesis method which comprises the following steps: firstly, preparing an amino methylene phosphonic acid compound with one-NH reaction site from n ethylene (n + 1) amine, phosphorous acid and formaldehyde; secondly, preparing a triazole derivative from ethylene glycol glycidyl ether and triazole; and reacting the two products with sodium bicarbonate to obtain a target product. The target molecule contains a sodium phosphate group and a triazole group at the same time, through the synergistic effect of functional groups, intramolecular synergy of scale inhibition and corrosion inhibition functions is achieved, and the corrosion inhibition performance higher than that of a DETPMP scale and corrosion inhibitor used commercially is shown. The triazole phosphate type corrosion and scale inhibitor has good catalytic activity on photocatalytic carbon dioxide reduction under the conditions of room temperature and high temperature, the TON (carbon monoxide conversion number) can reach 1206, and the selectivity is 100%.

The application discloses an amplification preparation method of dimethylheptyl methylphosphonate, and belongs to the technical field of medical intermediates. The core point of the application is that 2-octanol and phosphorus trichloride are used as raw materials, and tri-2-octyl phosphite is generated in an organic solvent in the presence of a catalyst A, then the tri-2-octyl phosphite is reacted with a methylating agent in the presence of a catalyst B to generate dimethylheptyl methylphosphonate. The method avoids the use of dangerous reagents and expensive reagents, reduces the raw material cost, reduces the generation amount of isomers, improves the reaction yield, greatly reduces the amount of three wastes, and makes the whole preparation process more green and environment-friendly. The process is simple and reliable, easy to industrial production, and provides a new reaction path for the synthesis of dimethylheptyl methylphosphonate.

The invention discloses a pomegranate-shaped core-shell structure tin pyrophosphate negative electrode material as well as a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage materials. The preparation method comprises the following steps: mixing tetravalent tin salt and a phosphonic acid organic ligand, and carrying out hydrothermal reaction to obtain a tin-based metal organic framework precursor; the phosphonic acid organic ligand is selected from one or two of phenylphosphonic acid or (pyridine-2-yl methyl) phosphonic acid; and carrying out heat treatment on the tin-based metal organic framework precursor at 550-700 DEG C to obtain the pomegranate-shaped core-shell structure tin pyrophosphate negative electrode material. The tetravalent tin salt and the specific phosphonic acid ligand are used for constructing the precursor, and the Kirkendall effect in the pyrolysis process is utilized to form a unique core-shell structure, so that the negative electrode material shows excellent cycling stability under high current density when being used for the potassium ion battery or the sodium ion battery.

The invention provides a herbicide composition, a herbicide as well as a preparation method and application of the herbicide, and belongs to the technical field of agricultural herbicides. The composition provided by the invention comprises (1-hydroxypropane-1, 3-diyl) bis (methylphosphonic acid) and glufosinate-ammonium, and the weight ratio of the (1-hydroxypropane-1, 3-diyl) bis (methylphosphonic acid) to the glufosinate-ammonium is 20: 1-50: 1. The composition can be used for controlling weeds, especially weeds which have resistance to glufosinate-ammonium. The (1-hydroxypropane-1, 3-diyl) bis (methylphosphonic acid) and glufosinate-ammonium are compounded, a remarkable synergistic effect is shown, the prevention and treatment effect of glufosinate-ammonium is improved, the increasingly prominent resistance problem in use of a single glufosinate-ammonium agent can be effectively solved, and the weeding composition can be widely applied to the technical field of agricultural weeding.

Disclosed are a pyrethroid compound containing a cyano group and a double bond, a synthesis method therefor and an application thereof. In the synthesis method, t-butyl 3-formyl-2,2-dimethyl-cyclopropanoate and cyanomethyl phosphonate are used as raw materials, undergo Witting-Horner reaction, undergo column chromatography to obtain t-butyl (Z)-3-(2-cyanovinyl)-2,2-dimethyl-cyclopropanoate ester, undergo deprotection to obtain (Z)-3-(2-cyanovinyl)-2,2-dimethyl-cyclopropanoic acid, undergo acyl chlorination reaction to produce (Z)-3-(2-cyanovinyl)-2,2-dimethyl-cyclopropanoyl chloride, and are esterified with corresponding alcohol to obtain the pyrethroid compound. The compound can be used as an insecticide against pests such as mosquitoes, flies, German cockroaches and the like.

This invention relates to the field of ceramic materials, specifically disclosing a high water-resistant magnesium phosphate cement-based foam ceramic and its preparation method. The foam ceramic comprises the following components: 100-150 parts magnesium phosphate cement, 1-5 parts retarder, 5-20 parts foaming agent, 1-5 parts foam stabilizer, 5-15 parts lutetium ion source, 1-8 parts methylene phosphonic acid component, and 30-60 parts water. The method includes: (1) mixing the lutetium ion source, methylene phosphonic acid component, and water to obtain a complex solution. (2) mixing the magnesium phosphate cement and foam stabilizer, then adding the complex solution to the mixture and mixing to obtain a slurry. (3) adding the foaming agent to the slurry and allowing it to stand for foaming, followed by curing to obtain the foam ceramic. This invention not only effectively reduces the solubility of magnesium phosphate cement hydration products, but also combines CO2 foaming to generate a low-solubility magnesium carbonate shell, significantly improving the long-term stability of the foam ceramic in an aquatic environment while maintaining high porosity.

Organometallic precursor solutions containing one or more phosphonate, such as methylphosphonic acid, tert-butylphosphonic acid, diethoxyalyllphosphonate, benzylphosphonic acid, and phenylphosphonic acid, are described. Corresponding methods for forming radiation patternable coatings as well as methods for forming a pattern using a solventless developing process are also described. The incorporation of a phosphonate into an organometallic photoresist composition, such as an organotin photoresist composition, is described as a way to increase stability of organometallic precursor solutions, to improve the homogeneity of organometallic photoresist films, and / or to improve the patterning performance of organometallic photoresist coatings.

The invention discloses a synthesis method of polymethylphosphonic acid glycol ester, which belongs to the technical field of polymethylphosphonic acid glycol ester preparation, and comprises the following steps: adding a solvent and ethylene glycol into a reaction bottle, stirring and cooling to 0-5 DEG C; placing molten methyl phosphorus oxychloride in a constant-pressure dropping funnel, and adding a solvent for dissolving and diluting to obtain a mixed solution; dropwise adding the mixed solution into a reaction bottle, wherein the temperature is controlled to be not higher than 5 DEG C in the dropwise adding process; carrying out deacidification treatment to obtain an intermediate product; and stirring and heating the intermediate product to 75 DEG C, and continuously introducing ethylene oxide for 2-6 hours to obtain the product. According to the method, methyl phosphorus oxychloride reacts with ethylene glycol, halogen is replaced, the product is obtained through ethylene oxide end capping, the byproduct serving as a low-boiling-point substance can be removed, and no catalyst is used, so that the acid value of the product PEMP is low.

The invention relates to the technical field of high-value utilization of solid wastes, in particular to a method for preparing II-type anhydrous gypsum by utilizing phosphogypsum and application of the II-type anhydrous gypsum. The preparation method comprises the following steps: adding a crystal modifier 1, 3, 5-triazine-2, 4, 6-triamine hexaacetic acid or 1, 3, 5-triazine-2, 4, 6-triamine hexamethyl phosphonic acid, an alkaline regulator, a surfactant and water into phosphogypsum, reacting under a hydrothermal condition, filtering, and carrying out vacuum drying on the obtained solid to obtain the type II anhydrous gypsum. Then the type II anhydrous gypsum is added into the polypropylene, and the doping amount can be increased to 40%, so that the tensile property, bending property and impact property of the prepared composite material are improved compared with those of a pure polypropylene material, the mechanical property is improved, the use cost of a polymer is greatly reduced, and the application prospect is wide. A diversified application scene is provided for high-value utilization of the ardealite, and a new path is opened up for solving the current ardealite problem.

The present invention provides a technique capable of suppressing capacity degradation when charging an electricity storage device. A power storage device disclosed herein is provided with a non-aqueous electrolyte solution. The non-aqueous electrolyte solution contains a non-aqueous solvent and an additive A. And the non-aqueous solvent is carbonic ester. The additive A is at least one of 2-vinylpyridine, vinyl benzoate, 3, 4-thiophenedicarboxylic anhydride, 1-ethyl-3-methylimidazolium methyl sulfate, 1-ethyl-3-methylimidazolium ethyl sulfate, 1-ethyl-3-methylimidazolium methyl phosphonate and 1-ethyl-3-methylimidazolium bis (perfluoroethylsulfonyl) imide, and the additive B is at least one of 2-vinylpyridine, vinyl benzoate, 3, 4-thiophenedicarboxylic anhydride, 1-ethyl-3-methylimidazolium methyl sulfate, 1-ethyl-3-methylimidazolium ethyl sulfate, 1-ethyl-3-methylimidazolium methyl phosphonate and 1-ethyl-3-methylimidazolium bis (perfluoroethylsulfonyl) imide.

Compounds of the Formula (I), pharmaceutical compositions comprising compounds of the Formula (I), and their use for treating or preventing cancer: (I)

The application provides a preparation method of 4-(hydroxymethyl phosphono)-2-carbonyl butyric acid, comprising the following steps: a) mixing methyl phosphonate diester, carboxylic acid and acryloyl cyanide to perform an addition reaction, and obtaining (3-cyano-3-carbonyl propyl) methyl phosphonate liquor after reduced pressure distillation; b) uniformly mixing the (3-cyano-3-carbonyl propyl) methyl phosphonate liquor obtained in step a) with water, cooling to 10-40 DEG C, then adding hydrochloric acid dropwise to perform acidification, continuing to stir for 0.1-1 h after the dropwise addition is completed, then performing a hydrolysis reaction, and finally performing purification treatment to obtain 4-(hydroxymethyl phosphono)-2-carbonyl butyric acid. Compared with the prior art, the preparation method provided by the application does not need to perform a cyanation reaction, avoids the use of high-cost, hard-to-obtain cyclic phosphonic anhydride and the highly toxic sodium cyanide; and the preparation method has short process steps, the raw materials are widely sourced and low in cost, the reaction conditions are mild, and the element comprehensive utilization rate is high.

The invention discloses a synthetic method of bis (1-methylheptyl) methylphosphonate, and belongs to the technical field of organic phosphorus compound preparation, and the synthetic method comprises the following specific steps: S1, adding phosphorus trichloride and a solvent into a reaction container, putting a reaction system into an ice-water bath, and dropwise adding sec-octanol into a phosphorus trichloride solution; after the reaction is finished, removing the solvent and unreacted sec-octanol through reduced pressure distillation to obtain an intermediate di (1-methylheptyl) phosphonite; s2, adding the di (1-methylheptyl) phosphonite obtained in the step S1 into an alkali solution, and putting a reaction system into an ice-water bath; after the reaction is completed, adding a methylation reagent into the system; and after the reaction is finished, washing the reaction liquid with water until the reaction liquid is neutral, and removing volatile components through reduced pressure distillation to obtain the target product methyl phosphonic acid di (1-methylheptyl) ester. The method provided by the invention has the advantages of high safety and strong process controllability, and is suitable for an alternative synthesis route of industrial production.

The present disclosure provides a method for purifying an organic amine, the method comprising: introducing a resin polymer matrix into a liquid containing at least an organic amine bonded to at least one metal element, wherein the resin polymer matrix is embedded with an amino compound selected from the group consisting of iminodiacetic acid, aminomethylphosphonic acid, or a combination thereof, and wherein the embedded resin polymer matrix binds the at least one metal element, and removing the at least one metal element from the organic amine.

The invention discloses the preparation method and application of 3,3-dialkoxypropylmethylphosphonic acid methyl ester, a key intermediate of glufosinate ammonium. The preparation method of the present invention is to use dimethoxyphosphorus chloride as a raw material, react with a Grignard reagent (1-halogenated-3,3-dialkoxypropane and magnesium to make it) or with a Turbo Grignard reagent (1-halogenated-3,3-dialkoxypropane and magnesium and auxiliary agent lithium chloride to make it) (also known as a Konchel type Grignard reagent), and then react with Arbuzov rearrangement reaction under the action of a catalyst to obtain 3,3-dialkoxypropylmethylphosphonic acid methyl ester. The reaction raw materials used in the synthesis method are simple and easy to obtain, the reaction conditions are easy to control, the by-products generated by the reaction are few, the reaction yield is high, the "three wastes" are less green and environmentally friendly, and the process is feasible by amplification verification.

The invention relates to the technical field of high polymer materials, in particular to a high-temperature-resistant polymer material composition and application thereof. The composition comprises monomers such as polyethylene glycol (200) dimethacrylate, isobornyl acrylate and the like, Sadama UV (Ultraviolet) resin, a photoinitiator TPO (Thermoplastic Polyolefin) and a core functional molecule ((2-(5, 5, 5-trifluoro-1-methacrylamidopent-2-yl)-1H-benzo [d] imidazole-1-yl) methyl) phosphonic acid. The core functional molecules are prepared step by step through condensation cyclization, Michael addition, Mannich reaction, catalytic hydrogenation acylation and acidic hydrolysis, the composition and a main matrix material are mixed, a polymer microcrystalline layer with the thickness of 20 microns is formed through UV curing, and then the 3MDT dimming film is prepared. The film has excellent high-temperature-resistant stability, strong interface adhesion, rapid dimming response and good mechanical properties, can keep a stable dimming effect in a high-temperature environment, and is suitable for high-end scenes such as buildings and automobiles.

The application provides a kind of F-free one-dose low IGZO damage metal etching solution and preparation method thereof, and relates to the technical field of semiconductor display panel manufacturing.The F-free one-dose low IGZO damage metal etching solution is composed of the following raw materials: hydrogen peroxide, complexing agent, 2,4-dichlorophenoxyacetic acid, ethylenediaminetetraacetic acid, corrosion inhibitor compound, and ultra-pure water is added to make up the volume;the corrosion inhibitor compound is obtained by mixing 2-mercapto-5-methylbenzimidazole and aminotrimethyl phosphonic acid in a mass ratio of 1:2-3, and the ratio of the addition amount of ethylenediaminetetraacetic acid to the corrosion inhibitor compound is ≤1.2.The application uses a complexing agent-corrosion inhibitor compound synergistic system, the IGZO layer damage rate is <5%, which significantly improves the device yield, and the Cu etching rate is 500-800 Å / min, the MoTi etching rate is 300-500 Å / min, and the rate matching is good.

A method of preparing an aluminum methyl methylphosphonate (AMMP) flame retardant by reacting at a reaction temperature of about 110 °C or higher for an amount of time sufficient to produce the AMMP, a reaction mixture containing an aqueous aluminum- containing methylphosphonic acid solution; and dimethyl methylphosphonate. The resulting product is intumescent.

The present application relates to wastewater treatment technical field, specifically to a kind of PVDF separation membrane and integrated process for treating printing and dyeing wastewater.The method adopts six-step process:1) PVDF microporous membrane pretreatment and pore adjustment;2) polydopamine primer preparation;3) alternatively depositing sodium polystyrene sulfonate and zirconium oxychloride octahydrate;4) aminomethyl phosphonic acid graft modification;5) UiO-66-NH2 type MOF epitaxial growth, and insert repair treatment strengthen interlayer coordination anchoring;6) stabilization treatment, enhance structural compactness.The membrane shows excellent removal performance to multi-sulfonic acid group anionic dyes, still maintains higher removal rate and flux recovery rate under high salt, complex working condition, effectively solves the problem of structural relaxation and selective removal of traditional PVDF membrane in high salt environment, and has good industrial application prospect.

The present invention relates to a promoter for the reaction of high-silica aluminosilicate with water. The promoter is selected from the group consisting of alkanolamines, reducing agents, sugars, sugar acids, carboxylic acids or their salts, amino acids or their salts, sulfamic acid, glyoxal, acetylacetone, pyrocatechol, nitrilotri(methylphosphonic acid), etidronic acid, mineral salts, or mixtures thereof. The present invention also relates to a binder containing high-silica aluminosilicate and the promoter, and their use in construction materials.

There is provided an FRP material with reinforced non-flammability that can be utilized as an alternative to a metal material in a variety of applications. The FRP material with reinforced non-flammability includes a non-flammable coating layer formed by coating, with a non-flammable agent, a surface of a flame retardant FRP matrix containing a flame retardant resin, wherein a composition of the non-flammable coating layer includes 10 to 20 wt % of 1,3,5-triazine-2,4,6-triamine, 30 to 50 wt % of ammonium polyphosphate, 1 to 10 wt % of dimethyl polysiloxane, 10 to 20 wt % of xylene, and 10 to 30 wt % of phosphonic acid, p-methyl-, (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester.

The invention belongs to the technical field of oil and gas field produced water treatment, and particularly relates to a scale inhibitor and a scale inhibitor preparation method. The scale inhibitor comprises amino trimethylphosphonic acid, hydroxyethylidene diphosphonic acid, ethylenediamine tetraacetic acid, modified sulfonate and potassium hydroxide. The scale inhibitor has a good scale inhibition effect, greatly prolongs the cleaning period of equipment, ensures the long-term stable operation of the equipment, and plays an important role in improving the operation efficiency and reducing the maintenance cost.

The invention relates to the technical field of acrylic plates, and discloses a flame-retardant heat-insulating acrylic plate and a preparation method thereof.The flame-retardant heat-insulating acrylic plate comprises methyl methacrylate, an initiator and a specific composite additive system, and the composite additive system comprises four key functional components, the preparation method comprises the following steps of: taking tri (2-hydroxyethyl) boric acid ester as a precursor of a glass phase network, octa (aminophenyl) polyhedral oligomeric silsesquioxane as a network framework, diethyl diethanol amino methyl phosphonate as a precursor of a catalyst and a foaming agent, and pentaerythritol tetra [beta-(3, 3, 4-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5 The invention relates to 2, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] ester. Through the synergistic effect of the components, a compact ceramic foam thermal insulation layer can be generated in situ during combustion, the unification of excellent flame-retardant thermal insulation property and inherent high optical and mechanical properties of the material is realized, and the problem that comprehensive properties are difficult to consider in a traditional modification technology is solved.

The invention relates to the technical field of plastic films, in particular to a high-strength and high-barrier PE composite packaging film and a preparation method thereof. According to the invention, piperazine, 3-chloropropyltriethoxysilane, pretreated glass fibers, methylphosphonic acid, modified glass fibers and pentaerythritol phosphate are added to obtain the flame-retardant modified glass fibers. The flame-retardant modified glass fibers are sequentially soaked in alpha-zirconium phosphate dispersion liquid, chitosan dispersion liquid, phytic acid dispersion liquid, chitosan dispersion liquid and phytic acid dispersion liquid, and the flame-retardant reinforced fibers are obtained. The flame-retardant reinforced fibers and polyethylene resin are subjected to mixing, extrusion and granulation, and high-performance polyethylene resin is obtained; and then the high-performance polyethylene resin, the polypropylene resin, the adhesive and the ethylene-vinyl alcohol copolymer are sequentially subjected to burdening, film blowing, slitting and packaging, and the PE composite packaging film is obtained. The PE composite packaging film prepared by the invention has excellent strength, flame retardance and barrier property, so that the PE composite packaging film has a wide application prospect in the technical field of plastic films.