174 results about "Alkylphenol" patented technology

The invention discloses a pseudomonas synthetic flora and application thereof in prevention and treatment of apple continuous cropping obstacles, and belongs to the technical field of agricultural microorganisms. The synthetic flora is constructed from three strains of pseudomonas, i.e., alkylphenol pseudomonas, oleaginous pseudomonas and pseudomonas putida, and the biological preservation numbers of the three strains of pseudomonas are respectively as follows: alkylphenol pseudomonas S4, CGMCC (China General Microbiological Culture Collection Center) No.36078; the culture medium is characterized in that the culture medium is Pseudomonas oleovorans S38, and the culture medium is CGMCC (China General Microbiological Culture Collection Center) No.36079; pseudomonas putida S42, the preservation number of which is CGMCC (China General Microbiological Culture Collection Center) No.36080, is CGMCC No.36080. The synthetic flora has a relatively strong antagonistic effect on main pathogenic bacteria (fusarium oxysporum and fusarium solani) of apple continuous cropping obstacles, and the inhibition capability of the synthetic flora is remarkably superior to that of a single strain; field and pot experiment results show that the liquid bacterial fertilizer and the solid bacterial fertilizer of the synthetic flora can promote the growth of overground parts and underground parts of the continuous cropping apple trees; the number of harmful fungi in continuous cropping soil is obviously reduced; the root protecting enzyme activity is improved, and the MDA content is reduced; the rhizosphere micro-ecology of the continuous cropping apples is optimized, and the continuous cropping obstacles of the apples are remarkably relieved.

This anticorrosive coating composition comprises a main agent (I) and a curing agent (II), wherein: the main agent (I) contains an epoxy resin (a); the epoxy resin (a) contains at least one of a bisphenol A epoxy resin (a-11) and a novolac epoxy resin (a-12) each having a weight average molecular weight of 6,000-12,000; the curing agent (II) contains a polyamine (b) and an alkylphenol (c); the polyamine (b) contains an alicyclic polyamine (b-1) having a cyclic aliphatic hydrocarbon group to which an amino group is bonded and contains a non-alicyclic polyamine (b-2) having no cyclic aliphatic hydrocarbon group to which an amino group is bonded; at least one of the main agent (I) and the curing agent (II) includes a vinyl-based defoaming agent (d) that has a constituent unit derived from at least one monomer selected from the group consisting of alkyl (meth)acrylates, alkyl vinyl ethers, and olefins and that has a number average molecular weight of 30,000-100,000 or 300,000-2,000,000; the content of the alicyclic polyamine (b-1) is 30%-80% by mass of the solid content of the curing agent (II); the content of the non-alicyclic polyamine (b-2) is 2%-45% by mass of the solid content of the curing agent (II); the content of the alkylphenol (c) is 5%-60% by mass of the solid content of the curing agent (II); and the content of the vinyl-based defoaming agent (d) is 0.005-3 parts by mass with respect to 100 parts by mass of the anticorrosive coating composition.

To provide a liquid spray head that has a low environmental impact, is acid-resistant, and is highly reliable. [Solution] A liquid spray head that sprays liquid from a nozzle comprises a first member, a second member, and a cured product of a one-component adhesive that adheres the first member and the second member, wherein the one-component adhesive comprises a bisphenol-free epoxy resin, a curing agent containing an aromatic amine polymer, and an alkylphenol, wherein the alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

The invention belongs to the field of coal mine dust falling, and particularly relates to a composite coal dust suppressant spraying system and application thereof. The composite coal dust suppressant spraying system comprises a spraying unit and a dust suppressant solution, the spraying unit comprises a water storage tank, a high-pressure water pump and a wide-angle solid nozzle, the dust suppressant solution at least comprises alkylphenol polyoxyethylene ether and xanthan gum, and the dust suppressant solution is provided with a three-dimensional network structure used for filling coal dust particle gaps. By changing a spraying medium and adding materials into water, the characteristics of wetting, bonding, agglomeration and the like are improved, the composite dust suppressant with an energy-shaped three-dimensional network structure is developed, and a composite dust suppressant spraying system with the wettability, the water retention and the wind erosion resistance cooperatively improved is provided, so that the spraying and dust falling efficiency of a coal mine is improved, and the dust suppression effect is improved. And the problem of reentrainment of dust is solved.

The invention provides a high-flexibility tear-resistant epoxy structural adhesive as well as a preparation method and application thereof. The epoxy structural adhesive is prepared by mixing a component A and a component B, on the basis of the total weight of the component A, the component A comprises the following components in percentage by weight: 34-70% of modified epoxy resin, 5-30% of bisphenol A type epoxy resin, 2-6% of benzyl alcohol, 8-15% of an epoxy reactive diluent, 0.2-1.5% of a defoaming agent, 1-5% of a thixotropic agent, 5-40% of filler and 1-4% of epoxy color paste; on the basis of the total weight of the component B, the component B comprises the following components in percentage by weight: 55-75% of polyether amine, 5-15% of bisphenol A epoxy resin, 5-10% of benzyl alcohol and 10-20% of dodecylphenol. The mixing mass ratio of the component A to the component B is (3.7-7): 1. The modified epoxy resin and the bisphenol A epoxy resin are compounded, and an optimized curing system is combined, so that the flexibility and the tear resistance of the structural adhesive are remarkably improved while the high strength of the epoxy resin is maintained, and the structural adhesive is suitable for structural bonding in the fields of buildings, automobiles, electronics and the like.

To provide a liquid spray head having a cured adhesive product that has a low environmental impact, is fast-curing, and acid-resistant. [Solution] The liquid spray head is a liquid spray head that sprays liquid from a nozzle and comprises a first member, a second member, and a cured product of a two-component mixed adhesive that adheres the first member and the second member. The two-component mixed adhesive comprises liquid A, which contains a main component including an epoxy resin that does not contain bisphenol; liquid B, which contains at least one of 2,5-bis(aminomethyl)bicyclo[2.2.1]heptane and 2,6-bis(aminomethyl)bicyclo[2.2.1]heptane and an alkylphenol; and a polymer of an aromatic amine contained in liquid A or liquid B. The alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

The application discloses an influenza virus extraction diluent and application thereof, and the diluent comprises Na2HPO4*12H2O, NaH2PO4*2H2O, NaCl, Proclin 300, ethylenediaminetetraacetic acid disodium salt dihydrate, polyoxyethylene-8-octylphenyl ether and alkylphenol polyoxyethylene ether. The polyoxyethylene-8-octylphenyl ether and the alkylphenol polyoxyethylene ether added in the diluent improve the virus extraction capacity, enhance the stability of the product, save the cost and time, provide a reference value for other products, prolong the product service life for customers, reduce the limitation, are more suitable for the temperature, and have greater market value.

This invention provides a phosphorus-free, multifunctional, environmentally friendly scouring agent, its preparation method, and its application, belonging to the field of textile printing and dyeing technology. The surfactants used in this invention (including 2-ethylhexanol alkyl glycoside, 2-propylheptanol alkyl glycoside, 2-propylheptanol xyloside, and isomeric tridecyl alcohol ether carboxylic acid) are all nonionic surfactants. The resulting phosphorus-free, multifunctional, environmentally friendly scouring agent is easily soluble in water, acid-resistant, resistant to high-concentration strong alkalis, hard water-resistant, low-foaming, and has strong penetrating power. It is widely applicable to cotton and its blended textile processes, achieving excellent whiteness and wicking effect in conventional annealing / scouring / bleaching processes. It contains no alkylphenol polyoxyethylene ethers or organophosphates, causing no environmental pollution and simplifying and making textile pretreatment processes more environmentally friendly.

The application discloses a fuel oil stabilizer for high-viscosity residual oil blending. The fuel oil stabilizer comprises, in percentage by weight, 1-15% of a fatty amine, 0.1-1.5% of a mono-polyisobutene bis-succinimide, 0.1-2% of a non-ionic surfactant alkylphenol polyoxyethylene-polyoxypropylene alcohol ether, 1-30% of alkyl imidazole ionic liquid and / or quaternary ammonium salt ionic liquid, 10-30% of polyvinyl pyrrolidone, 10-20% of an antifoaming agent, and the rest of hydrogenated white oil. The stabilizer has good compatibility, dispersibility, aging resistance and thermal stability for high-viscosity residual oil blending fuel oil.

A simple synthetic method of adamantane formate belongs to the technical field of adamantane formate, and comprises the following steps: 1) preparing adamantane formyl chloride: under the protection of nitrogen, carrying out heating reflux reaction on adamantane carboxylic acid and an acyl chloride reagent at 0-70 DEG C for 3-6 hours, and then carrying out rotary evaporation to obtain adamantane formyl chloride; dichloromethane, an acid-binding agent and an alkyl alcohol / alkylphenol mixture are added into the adamantane formyl chloride obtained in the step 1 through a dropping funnel, the mixture reacts for 8-10 h at the temperature of 0-30 DEG C, adamantane formate is synthesized and can be used for preparing lubricating oil, and the method is easy and convenient to implement, high in reaction rate, high in product yield and high in purity.

This disclosure provides a method for preparing sulfidated alkylphenol salt products to achieve a high sulfidation ratio of sulfidated alkylphenol salt to unsulfidated alkylphenol salt / phenol in the context of neutralization and optional over-alkaliening additives. The sulfidated alkylphenol salt products are obtained by sulfidating alkylphenols with a sulfur chloride blend comprising about 40% to about 75% by weight of sulfur dichloride.

This invention belongs to the field of oil and gas well exploration and development technology, specifically relating to a high-temperature sealing thread grease for oil casing and its preparation method and application. The thread grease comprises the following components in parts by weight: 33-58 parts base grease, 10-40 parts magnetic fluid, 1-5 parts polyethylene glycol, 5-10 parts phosphate ester, 4-10 parts fumed silica, 3-18 parts graphite, 1-5 parts nano-molybdenum powder, 1-5 parts nano-copper powder, 6-12 parts zinc powder, 10-30 parts lead powder, 5-10 parts alkylphenol resin, 5-15 parts acrylic resin, 5-15 parts polytetrafluoroethylene, 10-18 parts diisocyanate, 10-18 parts polyurethane, 10-12 parts tetraethylene glycol dimethacrylate, and 6-11 parts nitrile rubber. This invention ensures good lubricity while maintaining excellent sealing performance under high-temperature conditions.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

This invention belongs to the field of packaging and printing materials, specifically relating to a high-temperature resistant water-based micro-crosslinked transfer coating. The raw materials for this high-temperature resistant water-based micro-crosslinked transfer coating consist of the following components: methacrylic acid, N-hydroxymethylacrylamide, butyl acrylate, methyl methacrylate, diallyl phthalate, 1,6-hexanediol diacrylate, tricyclodecanedimethylol diacrylate, trimethylolpropane triacrylate, di(trimethylolpropane)tetraacrylate, potassium persulfate, sodium bicarbonate, alkylphenol polyoxyethylene ether ammonium sulfate, nonylphenol polyoxyethylene ether, deionized water, ethanol, ammonia, wetting agent, defoamer, and film-forming agent. Its beneficial effects include a stable reaction process during the preparation of this high-temperature resistant water-based micro-crosslinked transfer coating, reducing the likelihood of slag formation or explosive polymerization; high gloss in the coating film; good adhesion to vacuum metallization; minimal fogging or whitening; high-temperature molding resistance up to 180℃; and easy peeling of PET film with a high yield.

This application relates to a pretreatment method for fluorinated resins and a method for detecting metal elements in fluorinated resins. The pretreatment method for fluorinated resins provided in this application involves mixing the fluorinated resin with a solution containing alkylphenol polyoxyethylene ether under stirring conditions to disperse the fluorinated resin and obtain a fluorinated resin slurry. This application solves the problem of PTFE powder floating on the liquid surface and having difficulty fully contacting the acid solution by adding an alkylphenol polyoxyethylene emulsifier and high-speed stirring to disperse PTFE powder in deionized water to form a slurry. Using the method of this application, unlike traditional ashing digestion methods, the safety issues in determining metal elements in polytetrafluoroethylene powder can be effectively addressed.

The invention discloses a production process method of an antioxidant BHT (butylated hydroxytoluene). The core of the method is to treat the recrystallization mother liquor: after the mother liquor is rectified to remove the solvent alcohol, the traditional high-temperature rectification is not adopted, and primary cooling crystallization, alkylation reaction and secondary cooling crystallization are sequentially carried out. Finally, the secondary mother liquor is produced as a liquid antioxidant LK51, and comprises 7-9% of 2-tert-butyl-p-cresol, about 35% of 4 (6)-tert-butyl-m-cresol, about 35% of 2, 6-di-tert-butyl-p-cresol, 4, 6-di-tert-butyl-m-cresol and other alkylphenols, and the total content of the alkylphenols is greater than 98%. The component is a mixture of various alkylphenols, has excellent oxidation resistance in lubricating oil, gasoline and other oil products, and can replace an antioxidant T501 and the like. According to the method disclosed by the invention, through process innovation and replacement of two-fraction alkylation of original rectification 2 by direct alkylation of the primary crystallization mother liquor, the yield of a BHT main product is increased, meanwhile, the high-added-value liquid antioxidant is co-produced, low-value heavy alkylphenol waste is eliminated, and dual improvement of energy conservation, consumption reduction and economic benefits is realized.

The invention relates to the technical field of high-grade alkylphenol preparation, in particular to a method for preparing high-grade alkylphenol from lignin oil. The method comprises the following steps: mixing lignin oil, a tungsten acid catalyst and a reaction solvent, and carrying out a catalytic reaction to obtain a reaction solution; and then separating the reaction liquid to obtain the higher alkylphenol, wherein the reaction solvent is selected from one or more of tetrahydrofuran, tetrahydropyran, dioxane and isopropyl alcohol. The method provided by the invention is carried out in the specific reaction solvent, the application of a noble metal catalyst can be avoided, the reaction condition is mild, the side reaction is less, the conversion rate of monomer phenolic substances in the lignin oil by the catalyst is more than 70%, the selectivity of higher alkylphenol is more than 25%, and the added value of the lignin oil can be obviously improved.

The invention discloses a mass spectrometric detection method for C3-alkylphenol separated by an acetonitrile-ammonia water mobile phase and application, and relates to the technical field of environmental detection.The mass spectrometric detection method comprises the steps that according to the petroleum content range in a sample, a corresponding sample pretreatment process is selected to prepare a sample; the method comprises the following steps: detecting a standard sequence sample, a conversion factor calibration sample and a sample by utilizing LC-HRMS (Liquid Chromatography-High Resolution Mass Spectrometry) under an acetonitrile-ammonia water mobile phase system, and simultaneously collecting MS1 data and MS2 data; calculating the standardized concentration of the first component and the concentration of the second component which flow out together according to the MS1 data; calculating the concentration of propyl phenol according to the MS2 data; according to the MS1 data of the co-outflow single component, calculating the conversion factor of the co-outflow first component, and calculating the concentration of trimethylphenol by combining the standardized concentration of the co-outflow first component and the concentration of propyl phenol. The detection limit of the method for 12 C3-alkyl substituted phenol isomeride single components is lower than 1.0 [mu] g / L, the adding standard recovery rate is 77-103%, the sensitivity is high, and the accuracy is good.

The invention discloses a cooling liquid, which is prepared from the following ingredients in percentage by mass: 89 to 98 percent of low-viscosity poly-alpha olefin, 1 to 8 percent of high-viscosity poly-alpha olefin, 0.01 to 0.5 percent of modified nanometer insulating heat-conducting fluid, 0.2 to 2.5 percent of alkyl naphthalene, 0.01 to 0.5 percent of antioxidants and 0.03 to 0.06 percent of anti-foaming agents. The preparation method of the modified nano insulating heat-conducting fluid comprises the following steps: S1, uniformly stirring the polyisobutylene succinimide dispersing agent, the sulfurized alkylphenate and the antioxidant to obtain a mixture; and S2, adding nano solid particles into the mixture, and carrying out ultrasonic dispersion. According to the cooling liquid and the preparation method and application thereof, the modified nano insulating heat-conducting fluid, the antioxidant, the anti-foaming agent and the like are added into the poly-alpha-olefin, so that the immersed cooling liquid which is good in stability and capable of prolonging the service life and improving the heat transfer and heat conduction performance is formed.

The invention discloses fracturing fluid and a shale oil exploitation method, and belongs to the technical field of oil and gas exploitation. The fracturing fluid is prepared from raw materials in percentage by weight as follows: 0.8%-1.5% of a first surfactant, 0.5%-1.2% of a second surfactant, 1%-2% of an aid, 10%-25% of a film-coated proppant, 0.01%-0.08% of a gel breaker and the balance of water, the first surfactant is organic acid modified hexadecyl trimethyl ammonium bromide; the second surfactant is alkylphenol polyoxyethylene ether and / or fatty alcohol-polyoxyethylene ether; a film covering material of the film covering proppant is a graphene nanosheet. The fracturing fluid and the shale oil exploitation method can provide a high flow guide channel for oil and gas seepage, obviously improve the recovery efficiency, and are especially suitable for fracturing transformation of unconventional compact oil and gas reservoirs.

The invention provides an ultrahigh-base-number composite calcium salt detergent, a preparation method thereof and a lubricating oil complexing agent. The preparation method comprises the following steps: mixing solvent oil, base oil, an accelerant A, an accelerant B, sulfonic acid, salicylic acid, first inorganic calcium and an accelerant C for neutralization reaction; carbon dioxide is introduced, second inorganic calcium and water are added for a carbonation reaction, a product is purified after the reaction is finished, and the composite calcium salt detergent is obtained; the accelerant B is selected from a combination of two or more than three of polyisobutylene succinic anhydride, dodecenyl succinic anhydride, polymethacrylate, trimethylolpropane isooctoate, alkylphenol formaldehyde resin and benzylamine. The composite calcium salt detergent disclosed by the invention has the advantages of ultrahigh base number and better thermal stability, and can fundamentally improve the problem of precipitation when calcium sulfonate and calcium salicylate are compounded.

The invention discloses a coating with a formaldehyde purification function, a preparation method of the coating and leather applying the coating, and relates to the technical field of leather coatings. The coating is prepared from the following raw material components: 10 to 40 parts of nano zinc oxide, 2 to 10 parts of alkylphenol polyoxyethylene ether, 10 to 45 parts of styrene acrylate, 5 to 30 parts of aliphatic isocyanate, 5 to 20 parts of polycarbonate, 5 to 30 parts of acrylate, 10 to 50 parts of paraffin emulsion, 0.5 to 5 parts of pH (Potential of Hydrogen) regulator and deionized water. The mass ratio of the nano zinc oxide to the alkylphenol polyoxyethylene ether to the styrene acrylate to the aliphatic isocyanate to the polycarbonate is 1 to (0.2 to 0.4) to (0.8 to 1.2) to (0.5 to 0.8) to (0.5 to 0.8). According to the coating with the formaldehyde purification function, nano-zinc oxide can be uniformly dispersed in a coating system, flocculation agglomeration and precipitation do not occur after long-term storage (6 months), and the coating can be applied to manufacturing of leather for furniture.

The invention discloses a pour point depressant suitable for conveying crude oil and a preparation method and application thereof, and belongs to the technical field of oil field chemicals. The pour point depressant comprises a first component, a second component, a third component and a fourth component, the first component is one or more of polyoxyethylene fatty alcohol ether, polyoxyethylene fatty alcohol ester and alkylphenol polyoxyethylene ether, and the molecular weight of the first component is 600-1600; the second component is a covalent grafting product of graphene oxide and a terpolymer of oleic acid, long-chain alpha-olefin and methacrylamide, and the molecular weight of the second component is 3000-8000; the third component is a composite product of nano silicon dioxide and a terpolymer of acrylate, fumaric acid and vinyl acetate, and the molecular weight of the third component is 3000-5000; and the fourth component is one or more of sorbitan fatty acid ester, a polyisobutylene succinic anhydride derivative and ethylene glycol monobutyl ether. The problem of poor timeliness of a single-component pour point depressant is solved, and the performance timeliness of the product is remarkably improved, so that the pour point depressant meets the conveying requirement.

The invention discloses dual-fuel national sixth engine lubricating oil and a preparation method thereof, and the dual-fuel national sixth engine lubricating oil comprises the following components in percentage by mass based on the total mass of diesel engine oil: 1%-6% of an antioxidant and antiwear agent, 1.0%-6.0% of a metal detergent, 2.0%-16% of an ashless dispersant, 0.1%-0.5% of an antifriction and antiwear agent, 5.0%-15.0% of a viscosity index improver, 0.1%-0.8% of a pour point depressant and the balance of base oil. The antioxidant and antiwear agent is zinc diaryl dithiophosphate, an oligomer synthetic arylamine antioxidant and long-chain alkyl thio hindered phenol in a specific proportion, the metal detergent is compounded by magnesium alkyl salicylate and sulfurized calcium alkyl phenolate, and the viscosity index improver is a dispersive PMA viscosity index improver. The lubricating oil is compatible with diesel and gas engines, solves the problems of high-temperature oxidation resistance, soot dispersion, wear resistance, friction reduction and the like, and meets the requirements of low sulfur, phosphorus and ash content.

A composition comprising at least one fuel that is a diesel fuel, a biodiesel fuel, or combinations thereof and less than 100ppm, less than 50ppm (or less than 25ppm, less than 10ppm, 1 to 7ppm, or 5 to 7ppm) of an alkylene-coupled C10 to C60 (or C10 to C40, C14 to C32 or C24 to C28) alkylphenol; 25 to 500ppm (or 50 to 500ppm, or 150 to 450ppm or 250 to 450ppm, or 250 to 400ppm) of a terpolymer; and 5 to 90ppm, (or 10 to 70ppm, to 60ppm, or 10 to 55ppm) of hydrocarbyl-substituted amine detergent having at least one tertiary amino group. Methods of reducing the cold filter plugging point ("CFPP") of a fuel, said method comprising adding the following components: less than 100ppm, less than 50ppm (or less than 25ppm; less than 10ppm, 1 to 7ppm, or 5 to 7ppm) of an alkylene-coupled C10 to C60 (or C10 to C40, C14 to C32 or C24 to C28) alkylphenol; 25 to 500ppm (or 50 to 500ppm, or 150 to 450ppm or 250 to 450ppm, or 250 to 400ppm) of a terpolymer; and 5 to 90ppm, (or 10 to 70ppm, to 60ppm, or 10 to 55ppm) of hydrocarbyl-substituted amine detergent having at least one tertiary amino group. Uses of a fuel additive composition to reduce the cold filter plugging point ("CFPP") of a fuel, wherein the fuel additive composition comprises: 0.2 to 3wt% of an alkylene-coupled C10 to C60 (or C10 to C40, C14 to C32 or C24 to C28) alkylphenol; 10 to 50wt% of a terpolymer; and 2 to 10wt% of hydrocarbyl-substituted amine detergent having at least one tertiary amino group; and an optional solvent.

The invention provides lubricating grease and a preparation method thereof. The lubricating grease comprises an alkyl phosphonate compound, an antirust agent, an antioxidant, a sodium amide thickening agent and a main amount of lubricating base oil, and a preparation method of the alkyl phosphonate compound comprises the following steps: in the presence of an imine catalyst, enabling alkyl phosphonic acid to react with alkyl alcohol and / or alkylphenol, and collecting a product. The lubricating grease disclosed by the invention has excellent low-volatility performance, oxidation resistance, extreme pressure performance and wear resistance, and is suitable for a lubricating system of space equipment.

The invention relates to the technical field of coated diaphragms, in particular to a glass fiber cloth coated diaphragm for a lithium battery and a preparation method of the glass fiber cloth coated diaphragm. The diaphragm comprises a glass fiber cloth base membrane layer and a composite coating coated on one side or two sides of the glass fiber cloth base membrane layer, the composite coating can be selected from one of a PVDF adhesive layer, an aramid fiber layer, a PP layer or a PE layer, and the PVDF adhesive layer is prepared by dissolving PVDF powder, polyvinyl alcohol and polyoxyethylene alkylphenol ether in N-methyl pyrrolidone. The aramid fiber layer is prepared by dissolving aramid fiber, polyurethane and sodium polyacrylate in dimethylformamide, and the PP / PE layer is prepared by dissolving PP / PE resin, polyacrylic acid and polyethylene glycol in methylbenzene; the preparation method comprises the following steps: ultrasonically cleaning the glass fiber cloth base membrane with deionized water, drying, coating selected slurry to a required thickness by using a coating machine, and finally drying and curing to obtain a finished product. Through material selection and process control, the prepared diaphragm has excellent flame retardance, electrolyte wettability and mechanical strength, and the safety performance and comprehensive performance of the lithium battery can be remarkably improved.

The invention discloses a metal phosphate catalyst as well as a preparation method and application thereof in Friedel-Crafts reaction. The catalyst is composed of transition metal ions and phosphate ions, the molar ratio of phosphorus to the transition metal elements is 1: (0.5-7), the total acid amount of the catalyst is in positive correlation with the catalytic activity, and the higher the total acid amount is, the better the reaction effect is. The preparation method comprises the following steps: dissolving a transition metal soluble salt in deionized water, adding a phosphate aqueous solution, stirring to generate a precipitate, dropwise adding nitric acid to dissolve the precipitate, adding urea to obtain a mixed solution, and carrying out hydrothermal reaction, washing, suction filtration and drying to obtain a finished product. During application, the catalyst, phenol and alcohol are put into an intermittent reaction kettle, nitrogen is introduced to maintain stable pressure, heating and stirring reaction are performed, and an alkylphenol product is directly obtained. The catalyst is excellent in catalytic performance, mild in reaction condition and convenient to operate, the alcohol conversion rate and the selectivity of target alkylphenol can be effectively increased, meanwhile, the high conversion rate of acyl chloride is achieved in the acylation process, the process economy is improved, and an efficient and feasible technical scheme is provided for the Friedel-Crafts reaction.