348 results about "Norbornene" patented technology

The invention provides a novel polynorbornene anion exchange ionomer containing a polar functional group as well as a preparation method and application of the novel polynorbornene anion exchange ionomer. The polynorbornene has excellent thermal stability and chemical stability. Meanwhile, the AEI main chain of the polynorbornene has no aryl group, so that the adsorption influence caused by the aryl group is avoided. The synthesized addition polynorbornene AEI in the form of quaternary ammonium salt can be dissolved in a low-boiling-point solvent, and it is ensured that a membrane electrode can be prepared through a solvent casting method. Besides the solubility of the AEI, the addition polynorbornene-based AEI in the form of quaternary ammonium salt is modified by utilizing a thiol-ene click reaction, an anion exchange ionomer containing a polar functional group can be prepared, the interaction between the AEI and an electrolytic catalyst is improved, the reaction is simple and easy to operate, the universality is high, and the method is suitable for industrial production. And the current density in the AEMWE system containing the AEI can be effectively improved.

The present invention relates to a matting agent for HAA powder coatings and a preparation method thereof. The matting agent is a matting polymer containing special groups such as hydroxyl and epoxy groups with significantly different activities. The matting polymer is mainly prepared from glycidyl methacrylate, methyl methacrylate, butyl acrylate, 5-norbornene-2-methanol, 2-methyl-3-butene-2-ol, dicyclopentadiene dioxide, a hydroxyl polyester resin, and an accelerator. Due to the presence of hydroxyl and epoxy groups of varying activities in its structure, supplemented by the accelerator and the physical dispersion effect during the preparation process, the product has excellent matting ability and good storage and matting stability. It can reduce the gloss of HAA system powder coatings to 3-10%.

A composition comprising decellularized extracellular matrices, hydrogels comprising the same, and methods of making the same are disclosed.

The invention relates to an aliphatic copolyester elastomer and a preparation method thereof, and belongs to the field of high polymer materials. The elastomer is prepared through a series ring-opening copolymerization reaction of epoxide and cyclic anhydride, and the method comprises the following steps: under the action of a metal-free catalyst (a phosphazene ligand P1-tert-octyl / triethyl boron system) and an initiator (terephthalyl alcohol), carrying out a series ring-opening copolymerization reaction on epoxide and cyclic anhydride, the preparation method comprises the following steps: reacting epoxide (such as epoxypropane and allyl glycidyl ether) with aliphatic anhydride (such as glutaric anhydride) in a xylene solvent to generate a polyester prepolymer retaining an active end; adding a second group of epoxide (such as cyclohexene oxide) and anhydride (such as tetrahydrophthalic anhydride and norbornene dianhydride), continuously reacting to form a block copolymer, and then crosslinking. The material performance can be regulated by changing the monomer combination, the atom economy is high, and the raw materials can be produced on a large scale. The process is simple and environment-friendly, and a new choice is provided for application of the degradable elastomer in the fields of medical treatment, environmental protection and the like.

The invention provides a barrier laser film and a preparation method thereof, the barrier laser film sequentially comprises a substrate layer, a barrier layer and a barrier adhesion layer from bottom to top, the barrier layer has a three-dimensional network structure and has hydrophobic styrene, norbornene and vinyl siloxane groups; the barrier adhesion layer is provided with a hydrophobic polyurethane chain segment, nano silicon dioxide particles and styrene, so that the hydrophobicity and the gas barrier property can be improved; both the barrier layer and the barrier adhesion layer have compact three-dimensional network structures and have reversible imine bonds generated by Schif alkali reaction of keto groups of diacetone acrylamide serving as a cross-linking agent and amino groups of primary amine, so that the density of the three-dimensional network structures can be further improved, and self-repairing of the three-dimensional network structures can be realized; the density of the three-dimensional network structure is maintained, and excellent gas barrier property and self-repairing property are realized through the synergistic effect of the two.

The invention discloses a carbon fiber modified sizing agent as well as a preparation method and application thereof. The preparation method of the carbon fiber modified sizing agent comprises the following steps: (1) reacting 5-norbornene-2-methylamine with monofunctional epoxy resin to obtain slurry; and (2) dissolving the slurry prepared in the step (1) in an organic solvent to prepare the modified sizing agent. And then obtaining the modified carbon fiber through a dipping and sizing process. The method is simple in process, and the interface bonding strength of the carbon fibers and the polydicyclopentadiene can be greatly improved.

The invention discloses polyolefin artificial leather, a preparation method thereof and an automobile seat, and belongs to the technical field of polyolefin artificial leather. The polyolefin artificial leather comprises a base cloth layer, a high-elasticity and high-softness layer and a coating layer which are sequentially stacked, the high-elasticity and high-softness layer comprises the following raw material components: a polyolefin elastomer, a low-density polyolefin elastomer, modified high-elasticity resin, an assistant crosslinker, a coupling agent and an anti-aging agent; the low-density polyolefin elastomer comprises a modified polyolefin elastomer, inorganic microspheres and a silane coupling agent; the modified polyolefin elastomer is prepared by grafting 4-vinyl-1, 2-phthalic acid and maleic anhydride on a polyolefin elastomer by adopting a melt grafting method; the modified high-elasticity resin comprises a high-elasticity polyolefin elastomer, a rubber elastomer, a silane coupling agent and a peroxide cross-linking agent; the high-elasticity polyolefin elastomer is obtained by copolymerization of propylene, norbornene and cardanol; p-chlorophenyl trimethoxy silane is at least adopted as the coupling agent.

The invention belongs to the field of biomedical engineering and medical materials, and discloses a hydrogel combined reagent, tough hydrogel can be prepared based on the hydrogel combined reagent, the tough hydrogel is based on brand-new dual-network hydrogel, the network of the tough hydrogel is composed of a PEGMA / GelNB covalent cross-linked network and a PEGMA self-cross-linked network, norbornene serves as a rigid structure, and the hydrogel combined reagent can be used for preparing the tough hydrogel. The hydrogel composition reagent has the advantages that the hydrogel composition reagent has a spring-like effect in a gel network, the stretching and compression performance of the hydrogel can be remarkably improved, and the tough hydrogel prepared from the hydrogel composition reagent has good biological activity and excellent mechanical property and can be quickly gelatinized under mild conditions.

The invention discloses a high-temperature-resistant poly (4-methyl-1-pentene) dielectric film with synergistically improved insulating strength and dielectric property and a preparation method and application thereof, and belongs to the field of preparation processes of polymer energy storage dielectric materials. The invention aims to solve the problems that the existing polymer energy storage material is low in energy storage density at high temperature, and the dielectric property and the insulating strength cannot be improved at the same time. The invention provides a method for preparing a norbornene dianhydride grafted poly (4-methyl-1-pentene) film by a two-step method by using poly (4-methyl-1-pentene) particles, norbornene dianhydride and dicumyl peroxide and combining a solution suspension technology with a melt casting extrusion technology and a one-way stretching traction technology. The high-temperature-resistant poly (4-methyl-1-pentene)-based dielectric film prepared by the invention has excellent breakdown strength and dielectric property, and the discharge energy density is as high as 5.92 J / cm < 3 > when the charge-discharge efficiency is greater than or equal to 90% at 150 DEG C.

The invention provides a method for preparing tetracyclododecene in a reactive distillation device by taking C9 fraction and norbornene as raw materials. The method comprises the following steps: mixing the C9 fraction and the norbornene in a mixer and reacting in the reactive distillation device; the reacted material is directly rectified in a reaction rectification device, residual C9 fraction and norbornene in the reaction are obtained at the tower top, and a crude tetracyclododecene product is obtained in the reaction kettle; and separating high-boiling-point components from the crude tetracyclododecene product in the reaction kettle section of the rectifying tower in the reactive distillation device in a third rectifying tower to obtain the high-purity tetracyclododecene product. According to the invention, the reaction rectification device is used, and the reactor is combined with the rectification tower, so that the reaction product can be directly and preliminarily separated to obtain a light component mainly containing norbornene and a heavy component containing tetracyclododecene, the equipment cost can be saved, the energy consumption can be reduced, and the rectification effect can be improved; meanwhile, the C9 fraction is used as a raw material, and downstream application of the C9 fraction is expanded.

The invention discloses a polymer based on side-chain liquid crystal polynorbornene as well as a preparation method and application thereof, a monomer based on side-chain liquid crystal polynorbornene has a structure as shown in a general formula 1, and the polymer based on side-chain liquid crystal polynorbornene has a repeating unit as shown in a general formula 8. According to the monomer structure, a benzamide group is introduced into a side chain liquid crystal molecular structure, adjacent liquid crystal side chains generate hydrogen bond interaction after polymerization, on one hand, the mechanical property of the material is improved, on the other hand, stacking arrangement of a layered structure can be promoted during film preparation, and the gas barrier performance is improved.

The invention relates to the technical field of electronic materials, in particular to a copper-clad plate resin composition with an ultralow-loss medium and a preparation method of the copper-clad plate resin composition. The composition comprises the following components: modified polyphenyl ether, dicyclopentadiene epoxy resin, trifunctional epoxy resin, active ester, cyanate ester, DMAP, spherical silicon dioxide and a POSS-silicon dioxide compound, the preparation method comprises the following steps: carrying out surface norbornenylation modification on bimodal spherical silicon dioxide, and carrying out click reaction on the bimodal spherical silicon dioxide and octa-aminophenyl polysilsesquioxane with tetrazinyl at the tail end to prepare a POSS-silicon dioxide compound, so as to construct an interface transition layer with gradient modulus. According to the invention, collaborative optimization of dielectric loss, thermal mechanical properties and interface bonding strength is realized, and the material has excellent properties of low dielectric loss, high thermal stability, high peel strength and the like, and is suitable for the fields of 5G communication, high-frequency electronic equipment and the like.

The invention discloses a low-residue lithium battery positive electrode tab film adhesive material and a preparation method thereof, and belongs to the technical field of lithium battery auxiliary materials. The preparation method comprises the steps of copolymer synthesis, premixing, filler dispersion, crosslinking system introduction and defoaming, and coating and packaging, the copolymer is prepared by norbornene, hexafluorobutyl acrylate and maleic anhydride free radical copolymerization, and fluorinated hyperbranched polyester is subjected to ester exchange and epoxy ring opening one-step functionalization. Aiming at the problems of high high-temperature residue, weak interface adhesion and poor electrolyte resistance of the existing adhesive, the invention designs that a fluorine-containing copolymer with high thermal stability and high reaction activity is taken as a main body and is matched with a reactive compatibilizer to construct a strong chemical bonding interface, and a hyperbranched stabilizer with double functions of physical binding and chemical chelation is introduced, so that the adhesive is prepared. The tab adhesive film bonding material with ultralow residue, ultrahigh peel strength and excellent electrolyte resistance is successfully prepared, and the long-term reliable sealing requirement of a high-energy-density lithium battery can be met.

The application belongs to the technical field of organic compound synthesis and the field of polymer preparation, and discloses a method for directly preparing a cycloolefin copolymer from dicyclopentadiene and ethylene based on a continuous flow reactor; the continuous flow reactor is used to efficiently prepare norbornene and derivatives thereof from ethylene and dicyclopentadiene, and then the norbornene and derivatives thereof are used to prepare a cycloolefin copolymer from excessive ethylene. The application uses dicyclopentadiene and ethylene as raw materials, realizes a continuous process from the synthesis of a cycloolefin monomer to the preparation of a cycloolefin copolymer, and the cycloolefin monomer does not need to be separated and stored and can directly participate in the polymerization reaction, so that the original complicated process is effectively simplified, energy consumption is reduced, the catalyst in the polymerization stage is not easy to be deactivated even at high temperature, the catalytic efficiency is high, and a high polymer yield can be obtained in a very short time.

The invention discloses a preparation method of an anti-pollution modified polyethersulfone nanofiltration membrane, which comprises the following steps: step A1, preparation of a membrane casting solution and a coagulating bath: dissolving polyethersulfone, a zwitterionic block copolymer, tetrazine modified graphene quantum dots and tetrabutyl titanate in N-methyl pyrrolidone to obtain the membrane casting solution; the zwitterionic block copolymer forms a dynamic hydration layer through strong hydration to inhibit pollutant adsorption; dissolving calcium chloride and disodium hydrogen phosphate in deionized water, adding triethanolamine to adjust the pH value of the solution to 8.0-9.0, continuously stirring, and adding norbornene modified chitosan in the stirring process to obtain a coagulating bath; the invention relates to the technical field of nanofiltration membranes. According to the preparation method of the anti-pollution modified polyethersulfone nanofiltration membrane, vertical array hydroxyapatite whiskers generated by biomimetic mineralization provide a super-hydrophilic surface to reduce organic matter adhesion; the tetrazine-norbornene light-triggered dynamic cross-linked network endows the film surface with self-repairing capability, and the use damage can be repaired.

The present application relates to bicyclo[2.2.1]hept-5-en-2-ol and related compounds, methods of making them, and methods of using them as flavor and fragrance ingredients in food, cosmetic, pharmaceutical, consumer, and other compositions and products.

The invention discloses a tetracyclododecene preparation method, which comprises: mixing an N-methyl pyrrolidone (NMP) solvent, norbornene and toluene, heating to a reaction temperature in a reaction kettle, dropwise adding cyclopentadiene, and carrying out a Diels-Alder reaction in the reaction kettle to prepare tetracyclododecene, the high-purity tetracyclododecene with the mass content of 99% or above can be obtained through subsequent rectification. According to the process, cyclopentadiene is dropwise added, so that the reaction time is shortened, side reactions are reduced, the reaction is carried out in a liquid phase by taking NMP (N-Methyl Pyrrolidone) with a higher boiling point as a solvent, the reaction temperature can be reduced, the reaction process can be carried out at normal pressure, the production safety is improved, and the production operation cost is reduced.

The invention discloses a preparation method of N-hydroxyl-5-norbornene-2, 3-dicarboximide sulfonate, which is characterized in that the N-hydroxyl-5-norbornene-2, 3-dicarboximide sulfonate is used as a raw material. The preparation method comprises the following step: in the presence of alkali, carrying out esterification reaction on a compound II and a compound III in a solvent to obtain a compound I. The preparation method disclosed by the invention can be used for obtaining a high-purity product with high yield and has a good industrial production prospect.

The invention discloses a paper-plastic composite reactive polyurethane hot melt adhesive for low-temperature coating, and belongs to the technical field of polyurethane adhesives, the paper-plastic composite reactive polyurethane hot melt adhesive for low-temperature coating comprises the following components by weight: 50-70 parts of modified polyester polyol, 30-50 parts of modified polyether polyol, 15-24 parts of diisocyanate, and 5-30 parts of tackifying resin, 0.1-1 part of a catalyst, 5-35 parts of a filler, 0.05-2 parts of a polymerization inhibitor and 0.1-0.5 part of an antioxidant; the modified polyester polyol is modified poly (butylene succinate); the modified polyether polyol is modified polypropylene glycol; the polyurethane hot melt adhesive prepared by modifying 5-norbornene-2-methylamine with a strong polar bond-NH and 3, 7-dimethyl octyl-6-ene-1-alcohol containing an insect-proof and mildew-proof functional component with polyhydric alcohol has relatively low melting temperature and viscosity, has initial viscous force of more than 1N and final viscous force of more than 5N at the same time, and has the characteristics of high temperature resistance, high temperature resistance, high temperature resistance and the like. The method can be well applied to paper-plastic compounding for low-temperature coating.

The invention discloses a synthesis method of 9-dichloromethylene-5-amino-benzonorbornene and an intermediate product, the synthesis method comprises the following steps: firstly, synthesizing a cyclization compound 1 as shown in a formula 1 from a cold solution of 6, 6-dichlorofulvene and 1, 4-benzoquinone under the action of a solution of a catalyst I, carrying out oximation reaction on the cyclization compound 1 prepared in the step a and hydroxylamine salt under an alkaline condition, and carrying out post-treatment to obtain the 9-dichloromethylene-5-amino-benzonorbornene. Under the action of a catalyst II, adding the oximate 2 prepared in the step b into a closed container, carrying out hydrogenation reduction to obtain 9-dichloromethylene-5-amino-benzo norbornene, and directly treating the reduction product with acid to obtain 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene. According to the method, the cyclization compound is oximated firstly, then the residual carbonyl and two double bonds on the ring are subjected to one-step reduction through catalytic hydrogenation, the working procedure is optimized, meanwhile, reduction by using expensive sodium borohydride is avoided, the method is short in synthesis route and suitable for industrialization, and the production cost is reduced.

The invention provides a phosphorus-nitrogen coordinated metallocene compound and a preparation method and application thereof, the compound has a structure as shown in a formula I: in the formula I, M is selected from IVB group metals in the periodic table of elements; r1 is selected from hydrogen, halogen, C1-C10 direct or branched alkyl, and C1-C3 alkoxy; r2 is selected from hydrogen and C1-C6 straight chain or branched chain alkyl; y is selected from chlorine, C1-C3 alkyl substituted or unsubstituted by trimethylsilyl, and amino substituted by trimethylsilyl. The phosphorus-nitrogen coordinated metallocene compound provided by the invention has relatively high thermal stability, catalytic activity and comonomer insertion rate, and can realize high-temperature solution polymerization of ethylene and norbornene.

Provided is a polymer that is capable of forming a resin film having high-heat resistance and low film stress, and that contains a structural unit derived from norbornene or a derivative thereof.　This block copolymer has a block A and a block B. In the block copolymer, structural units represented by at least any chemical formula selected from the group consisting of general formulae (1-1), (1-2), and (1-3) account for greater than 50 mol% of all of the structural units in the block A. Additionally in the block copolymer, structural units represented by general formula (2) account for greater than 50 mol% of all of the structural units in the block B.

Disclosed herein are EPDM-diene copolymers that have a low molecular weight and are liquid at room temperature. In a specific embodiment, the method of making the copolymer includes: adding a solvent to a reactor; adding a propylene and a catalyst mixture to the solvent in the reactor to make a first reaction mixture, where the catalyst mixture includes: one or more catalysts, one or more cocatalysts, and one or more catalyst reactivators; contacting an ethylene to the first reaction mixture to make a second reaction mixture; and contacting a vinyl norbornene to the second reaction mixture to make a copolymer, where the copolymer has a molecular weight from about 2,500 g / mol to about 1,000,000 g / mol, and where the copolymer has a viscosity from about 1,000 cP to about 2,500,000 cP at 100° C.

This invention relates to the field of functional textile materials technology, and discloses a fluorine-free waterproof fabric and its preparation process. The fluorine-free waterproof fabric is composed of a host-guest inclusion crosslinking type organosilicon synergistic film-forming agent, an organic small molecule film-forming component, a crosslinking promoter, a dispersant stabilizer, a softening agent, and a solvent. The host-guest inclusion crosslinking type organosilicon synergistic film-forming agent is prepared by forming a host-guest inclusion structure with β-cyclodextrin and adamantane carboxylic acid, followed by reactive modification with 3-isocyanate propyltriethoxysilane. The organic small molecule film-forming component is norbornene-2-carboxylic acid. Through host-guest inclusion, crosslinking, and organic small molecule synergistic film formation, a stable and dense fluorine-free waterproof functional layer is formed on the fabric surface. This invention significantly improves waterproof performance and its washability and abrasion resistance without using fluorine-containing compounds, while also maintaining the soft hand feel of the fabric, demonstrating good environmental friendliness and application prospects.

The invention relates to the technical field of olefin catalyst polymerization, in particular to a preparation method of ethylene propylene diene monomer. The method comprises the following steps: carrying out anhydrous oxygen operation treatment on a polymerization reaction kettle by using a vacuum-gas raw material replacement method, introducing a gas raw material prepared in proportion into the polymerization reaction kettle to achieve the required polymerization original pressure, continuously introducing a main catalyst, a cocatalyst, a hexane solvent and ethylidene norbornene into the polymerization reaction kettle at the same time, starting a polymerization reaction; and introducing circulating cooling water into an outer jacket of the polymerization reaction kettle in the reaction process to maintain the stability of the polymerization reaction temperature, inactivating the polymerization system after the polymerization reaction is finished, removing the solvent, and drying to obtain the ethylene propylene rubber. The prepared ethylene propylene diene monomer is high in stability, the molecular mass of the product is controllable, and the molecular mass distribution is obviously narrowed.

The application discloses a Low-alpha silicon powder / benzocyclobutene chip packaging composite material, which comprises 55-60wt% of phosphonate-benzocyclobutene resin matrix, 35-40wt% of filler system and 3-5wt% of bismaleimide synergistic additive; the phosphonate-benzocyclobutene resin matrix is obtained through ring-opening metathesis polymerization of norbornene phosphonate imidazole monomer and co-curing of benzocyclobutene monomer; the filler system contains epoxy silane modified double-particle-size Low-alpha silicon powder and aluminum hypophosphite modified nano Mg(OH)2; the alpha emissivity of the epoxy silane modified double-particle-size Low-alpha silicon powder is <0.001 cph / (cm 2 ·h), U≤0.1ppm, Th≤0.2ppm. The dielectric constant of the obtained chip packaging composite material is ≤2.45@77GHz, the dielectric loss is <0.0016, and the interfacial bonding strength is ≥7.2MPa, so that the chip packaging composite material is suitable for vehicle 77GHz millimeter wave radar packaging and meets the requirements of high frequency, radiation resistance and high reliability.

The present disclosure belongs to the technical field of catalyst preparation, and provides a polynorbornene / carbon black-cross-linked three-dimensional network-immobilized bimetallic copper / gold (PNBI / CB-Cu / Au) nanocatalyst, and a preparation method and use thereof. Metallic copper and gold both exist in a form of nanoparticles in the catalyst and are uniformly dispersed, and further enhancing a catalytic performance. Moreover, the carrier is a polynorbornene / carbon black-cross-linked three-dimensional network, and a relative content of free hydroxyl groups in the catalyst is controlled by changing a monomer ratio to adjust a hydrophilic-lipophilic balance value of the catalyst, adapting to a reaction of an organic phase with an aqueous phase. Furthermore, the catalyst is insoluble in conventional solvents, and has a desirable effect in immobilizing nanoscale metallic copper, prolonging a service life of the catalyst.

The invention discloses an ultra-microporous branched polyaryl piperidinyl anion exchange membrane material as well as a preparation method and application thereof, and relates to the field of anion exchange membrane materials for producing hydrogen by electrolyzing water. According to the ultra-microporous branched polyaryl piperidinyl anion exchange membrane material, a four-functionality branching agent with a structure shown in a formula I is introduced into a polymer structural unit of polyterphenyl piperidone, and a polyaryl piperidinyl compound with a four-branch norbornene bis-benzocyclobutane structure is formed. By adopting the technical scheme, the structural rigidity of a polymer skeleton is improved, the formation of a large number of ultra-microporous structures is promoted, the ionic conductivity of the membrane material is effectively improved, and meanwhile, the problem of relatively poor dimensional stability caused by excessive water absorption of the membrane material is solved; the prepared anion exchange membrane has a wide application prospect in the field of hydrogen production by water electrolysis.

Macromers and compositions, methods of making macromers and making objects and articles of manufacture, and objects and articles of manufacture. In various examples, a macromer comprises oligomer group(s) comprising one or more norbornene group(s). In various examples, a method of making macromer(s) comprises reacting oligomer(s), norbornene group precursor(s), and optionally, base catalyst(s) and / or aliphatic epoxide(s) to form the macromer(s). In various examples, a composition (which may be an emulsion), comprises macromer(s); and optionally, crosslinker(s), photoadditive(s), thermal additive(s), diluent(s), or any combination thereof. In various examples, a method of forming an object or an article of manufacture comprises irradiating or thermally treating a monolith comprising one or more composition(s), where crosslinking groups are formed. In various examples, an object or an article of manufacture, comprises at least partially crosslinked macromer(s) and may be porous and / or may comprise an interpenetrating network.

The invention discloses a gram-level synthesis method of Dactyllactone A. The gram-level synthesis method of Dactyllactone A is shown in the description. The method comprises the following steps: with simple and easily available aryl iodide, aziridine and triisopropyl silylacetylene as starting materials, stirring and reacting in an organic solvent at 60-70 DEG C under the action of a palladium catalyst, a phosphine ligand, a norbornene derivative and alkali to obtain a key intermediate; the key intermediate is condensed with iodo gem-dimethyl ester furanone prepared from propiolic acid and dimethyl malonate iodine ylide, and then the condensation product is subjected to an Au / Ag catalyzed intramolecular hydroamination reaction, photocatalytic 6-pi electro-cyclization and two-step conversion, so that the natural product Dactyllactone A can be obtained, wherein the iodo gem-dimethyl ester furanone and iodo gem-dimethyl ester furanone are prepared from propiolic acid and dimethyl malonate iodine ylide. The method has the advantages of cheap and easily available raw materials, short reaction steps, high reaction efficiency, large preparation scale, simple preparation process and the like, has great application potential, and lays a good foundation for industrial production.