125 results about "Supramolecular polymers" patented technology

The invention provides a crystalline supramolecular polymer based on snap ring aromatic hydrocarbon. The polymer is obtained by self-assembling snap ring aromatic hydrocarbon (CLP) and a naphthalimide derivative (NDI-8) through a subject and an object. The crystalline supramolecular polymer (NDI-8 (at) CLPalpha) can fully utilize the synergistic effect of a plurality of weak interactions, so that the charge transfer interaction between molecules can be remarkably enhanced very easily. The crystalline supramolecular polymer constructed based on charge transfer shows excellent gasochromic performance. The p-xylene in the NDI-8-coated CLPalpha p-xylene isomer has efficient identification and detection capability, the color is changed from purple to light pink, and a wide application prospect is provided for the development of stimuli-responsive materials.

The invention provides a wall-fixing leakproof water-based drilling fluid for a myriameter deep well as well as a preparation method and application thereof, and belongs to the technical field of drilling fluids. The water-based drilling fluid is prepared from the following raw materials in parts by mass: 100 parts of water, 1-2 parts of sodium bentonite, 0.5-1 part of a salt response rheological modifier, 5-6 parts of a supramolecular polymer filtrate reducer, 6-8 parts of a cementing plugging agent and 2-4 parts of a cementing wall-fixing agent. The water-based drilling fluid can resist the temperature of 220 DEG C, can resist the salt to be saturated, has good rheology and filtration performance and multiple functions of inhibition, plugging, wall fixation and the like under high-temperature and high-salt conditions, and provides technical guarantee for smooth drilling of myriameter extra-deep wells.

The application provides a fluorescent sensor based on a tripod [5] arene, which is obtained by self-assembly complexation of a host of a tripod [5] arene TP5 and a guest of a quaternary ammonium salt in an H2O-DMSO system. A supramolecular system is constructed by host-guest interaction between the tripod [5] arene TP5 and the amphiphilic guest TPN, and then PbS fluorescent nanoparticles are generated in situ under ion induction. Fluorescence enhancement and high-sensitivity detection (LOD=7.00*10 2+ -6 M) of Pb ‑8 are realized. In addition, the fluorescent supramolecular polymer network based on the PbS fluorescent nanoparticles can be successfully applied to in-situ detection of Pb 2+ in cells.

The invention discloses a composite material and a preparation method thereof, and relates to the technical field of building materials. The preparation method comprises the following steps: providing a first mixed solution and 1, 3-cyclohexanedimethanol, mixing, and carrying out a first reaction to obtain a first prepolymer solution; providing a second mixed solution and polytetramethylene ether glycol, mixing, and carrying out a second reaction to obtain a second prepolymer solution; the first mixed solution and the second mixed solution both comprise diphenylmethane diisocyanate; providing a third mixed solution, mixing the third mixed solution with the first prepolymer solution and the second prepolymer solution, and carrying out a third reaction to obtain a supramolecular polymer; the third mixed solution comprises a chain extender; providing a wear-resistant agent, an antioxidant and glass fibers, and mixing with the supramolecular polymer to obtain the composite material. The composite material obtained by the method provided by the invention has high strength, excellent impact toughness, high wear resistance and self-repairing capability, and has wide prospects in high-end application scenarios such as polyurethane doors and windows, curtain wall keels, photovoltaic brackets and the like.

The present invention discloses an A,A'-bipyridinehydrazone-functionalized conjugated pillar[5]arene macrocyclic molecule and a synthesis method thereof. The invention comprises reacting a bis(4-formylphenylboronic acid)-functionalized pillar[5]arene with 2-hydrazinepyridine through an imine condensation reaction to obtain an A,A'-bipyridinehydrazone-functionalized conjugated pillar[5]arene PYP5 having two rigid functional arms. The macrocyclic molecule PYP5 can self-assemble through multiple hydrogen bonds to form a supramolecular polymer network. Thanks to the "double-arm-macrocyclic synergistic effect" between the double arms of the pillar[5]arene and the ethoxy group, PYP5 can provide multiple "clustered hydrogen bonds" to tightly bind ClO4. − Therefore, the supramolecular polymer network can effectively treat ClO4 in water. − It can show good adsorption and separation performance and can effectively remove ClO4 in water − The removal rate can reach 99.24%. The A,A'-bispyridinehydrazone functionalized conjugated column[5] aromatic macrocyclic molecule provided by the present invention has good application prospects in the fields of supramolecular assembly, water pollutant removal, adsorption separation, etc.

The invention discloses a preparation method of a recyclable orthogonal dynamic covalent fluorescent polymer material: connecting a phenylboronic acid group to lipoic acid or a lipoic acid derivative through an esterification reaction or an amidation reaction of its active ester to obtain benzyl lipoate borate and its derivatives or N-benzylboronic acid lipoamide and its derivatives. After heating and melting the above purified small molecules and removing water, transfer them to a substrate while it is still hot and spread them to obtain a yellow transparent supramolecular polymer. Irradiate it with an ultraviolet-visible light source to obtain the recyclable orthogonal dynamic covalent fluorescent polymer material containing disulfide bonds and borate ester bonds. The dynamic polymer material prepared by the invention is mainly crosslinked and self-assembled by dynamic disulfide bonds, dynamic borate ester bonds, and hydrogen bonds; it has strong fluorescence emission that can vary with temperature under light excitation at a wavelength of 400 nm; it has good biocompatibility, high stability, good homogeneity, and excellent mechanical properties. The preparation method of the invention is simple, and the process is safe and reliable.

This invention discloses a method for preparing a single-component room-temperature phosphorescent / fluorescent dual-emission polymer film, comprising: reacting a terminal amino-substituted alkane with halogen-modified naphthalenecarboxylic anhydride to synthesize an organic light-emitting small molecule with phosphorescent / fluorescent dual-emission function; and mixing the obtained organic light-emitting small molecule into a dynamically cross-linked supramolecular polymer to obtain a single-component room-temperature phosphorescent / fluorescent dual-emission polymer film. This invention also discloses the single-component room-temperature phosphorescent / fluorescent dual-emission polymer film prepared by the above method and its applications. The preparation method of this invention is simple and low-cost. The polymer film prepared with only a single component can generate a phosphorescent / fluorescent dual-emission ratio light signal with stable emission. The film color changes with changes in ambient humidity, and the film can sense ambient humidity in the range of 1–100%, showing broad application prospects in sensing, anti-counterfeiting, and bioimaging fields.

The invention discloses cefradine supramolecular composite graded gel and a preparation method and application thereof, cefradine and glycosaminoglycan are used as raw materials, and self-assembly of cefradine is controlled through an interface template to form supramolecular hydrogel. And cross-linking and compounding with glycosaminoglycan gel to obtain the double-network supramolecule-polymer graded composite gel. The graded composite gel prepared by the invention has excellent swelling property, tissue adhesion and thixotropy and tensile property similar to that of human skin, so that the graded composite gel can accelerate healing of infected wounds, and due to excellent conductivity, real-time online monitoring of drug release and wound healing conditions can be realized.

The invention provides a supramolecular polymer composition capable of co-assembly to maintain a three dimensional (3-D) macrostructural form after 3-D printing, made of a solvent, a template molecule; and a reactive component. The reactive component can be at least one monomer that is capable of hydrogen bonding with the template molecule to form a 1D supramolecular structure. The template may be an amphiphilic polymer. The monomer has at least two pendant groups capable of covalent crosslinking. The invention also includes a 3-D structure formed by crosslinking a 3-D printed supramolecular polymer composition, which optionally has a mesoporous structure. Also included is a method of manufacturing a 3-D structure by delivering a supramolecular polymer composition onto a surface of a substrate to form the 3-D structure.

The invention discloses a supramolecular polymer material based on a pseudorotaxane structure as well as a preparation method and application of the supramolecular polymer material, a matrix of the supramolecular polymer material is polydisulfide, a macrocyclic main body is complexed on a side chain of the polydisulfide, and the macrocyclic main body is a macrocyclic containing an electron-rich cavity structure. A quasi rotaxane structure is constructed by complexing a column [5] arene cavity and a lipoic acid alkyl chain, and the polymer material is endowed with excellent shear hardening performance by utilizing time dependence of dynamic dissociation of quasi rotaxane. Under relatively low-speed impact, pillararene slowly slips off from a side chain, and under high-speed impact, dissociation behaviors cannot be completed in time, so that a subject-object topological structure becomes a rigid site, impact force is dispersed to a nearby area in a spatial scale to prevent stress concentration, instantaneous impact force is dispersed in a time scale due to hysteresis of subject-object dissociation, and thus, the stability of the subject-object dissociation is improved. And the stress peak value is effectively reduced, so that the purpose of impact resistance protection is achieved.

The invention provides a hyperbranched-like pressure-sensitive adhesive with underwater and under-oil broad-spectrum bonding capability as well as a preparation method and application of the hyperbranched-like pressure-sensitive adhesive. 4, 4 '-diaminodicyclohexylmethane and N, N'-methylene bisacrylamide are adopted and heated in a polar solvent, an out-of-order hyperbranched polymer is formed through a Michael addition reaction, after product molecules are aggregated, a flexible supramolecular polymer with nanoscale water / oil phase separation can be formed, and the flexible supramolecular polymer has the water absorption / oil absorption characteristic. The hyperbranched pressure-sensitive adhesive can rapidly absorb and remove an interface water layer and an interface oil layer on the surface of a base material, and rapid and tight attachment of a product and the base material is achieved; meanwhile, the flexible nanophase separation structure can rotate along with the polarity of the binding face, evolution is matched with the polarity type of the base material, and broad-spectrum bonding is achieved.

The invention discloses a symmetric dipeptide supramolecular monomer based on bipyridine as well as a preparation method and application of the symmetric dipeptide supramolecular monomer based on bipyridine, and the symmetric dipeptide supramolecular monomer based on bipyridine is formed by connecting glycine-alanine dipeptide and chain alkoxy ether or dendronized alkoxy ether to bipyridine by taking bipyridine as a skeleton, and carrying out self-assembly in an aqueous solution to form the supramolecular polymer. The supramolecular polymer can realize polypeptide supramolecular self-assembly and dynamic regulation and control of supramolecular chirality through coordination and de-coordination with different metal ions, and also can realize adjustment of the average particle size of an assembly system through structural change of metal ion coordination so as to change the fluorescence property of the assembly system; meanwhile, the reversible temperature-sensitive phenomenon of the assembly in an aqueous solution is realized by adjusting the dendronized alkoxy ether, and the influence of temperature response on the chirality of the assembly is investigated.

The present invention discloses a Rh(I) supramolecular polymer catalyst, a preparation method thereof and an application thereof. A metal ion salt is used as a trigger to induce the formation of a binuclear rhodium cluster, and then a Rh(I) supramolecular polymer catalyst is obtained through ion pair-directed assembly. The supramolecular polymer catalyst can catalyze the hydroformylation reaction of olefins to prepare aldehyde compounds, realizing the efficient conversion of olefins. Due to the high stability of the supramolecular polymer catalyst, the catalyst and the product can be separated by simple filtration, and the recycling rate is high, effectively solving the technical problems of easy oxidation inactivation of the catalyst, low recycling efficiency and poor stability in the existing hydroformylation reaction of internal olefins.

The invention discloses an environment humidity response type circular polarization luminescence supramolecular polymer and a preparation method and application thereof.The preparation method comprises the steps that HYQUICC is dissolved in an organic solvent dimethyl sulfoxide, ultrasonic induction self-assembly is conducted after heating dissolution, and the supramolecular polymer with cyan fluorescence is formed; through the synergistic effect of an excited-state intramolecular proton transfer mechanism and a supramolecular dynamic self-assembly characteristic, humidity-driven fluorescence color change and CPL signal inversion are realized. Meanwhile, the CPL signal is switched from the negative direction to the positive direction, and the response time is obviously shortened along with the rising of the humidity. The material has high sensitivity (wide humidity response range and adjustable signal linearity), multi-dimensional optical output (intensity, wavelength and polarization state) and excellent stability (self-repairing characteristic), and overcomes the defects that a traditional fluorescence sensor is susceptible to interference and single in signal.

The application discloses a preparation method of a two-dimensional supramolecular polymer based on cation-pi interaction co-assembly, and relates to the technical field of supramolecular polymer materials. + As a cationic unit, a monomer molecule 4,4',4''-(3,7,11-trimethyltriphenylene-2,6,10-triyl)tris(N-dodecylbenzamide) is synthesized as a pi unit, and then the cationic unit and the pi unit are co-assembled to form a two-dimensional supramolecular polymer based on cation-pi interaction co-assembly. The prepared two-dimensional supramolecular polymer has fluorescence color change characteristics and photocatalytic hydrogen evolution performance, further widens the force category of two-dimensional supramolecular materials, and provides a new strategy for the preparation of two-dimensional supramolecular materials and the application of the two-dimensional supramolecular materials in the fields of fluorescence sensing, fluorescence anti-counterfeiting and photocatalytic hydrogen evolution.

The application provides a temperature-resistant adhesion type supramolecular polymer gel plugging particle and a preparation method and application thereof, and belongs to the technical field of oil field chemicals. The temperature-resistant adhesion type supramolecular polymer gel plugging particle is prepared from the following raw materials in a mass percentage: 5-10% of a high molecular polymer, 10-20% of a methyl-containing organic compound, 1-5% of a natural high molecular material, 0.1-1% of a phenyl-containing compound, 1-5% of inorganic particles, 0.1-1% of an initiator, and the balance of water. The application introduces a bonding functional monomer with strong adhesion performance into the polymer gel, and cooperates with various temperature-resistant functional groups and various non-covalent bond interactions, so that the temperature resistance, strength and wall adhesion capacity of the polymer gel particle are improved. The obtained supramolecular polymer gel plugging particle is high in temperature resistance, high in strength, high in adhesion and capable of effectively plugging a fractured formation.

The application discloses a kind of dynamic slip ring supramolecular polymer network and preparation method and application thereof, belong to supramolecular polymer technical field, preparation method is: acrylic ester monomer, initiator, accelerator and poly (caprolactone) single propylene modified column [5] areocenes The polyrotaxane of initiator and accelerator occurs RAFT polymerization under inert gas atmosphere, and the dynamic slip ring supramolecular polymer network of the preparation method is obtained;This method is simple, and reaction condition is mild, easy to implement;Compared with traditional covalent polymer network, the supramolecular polymer network prepared by the method has dynamic, more excellent mechanical mechanical property and energy dissipation, and has application potential in preparation of adhesive and / or toughening agent.

The invention provides unilateral functionalized column [5] arene, a metal supramolecular polymer constructed by coordination and orthogonal assembly of the unilateral functionalized column [5] arene and metal through host-guest interaction and application of the unilateral functionalized column [5] arene. The invention designs and synthesizes a unilateral functionalized column [5] arene DNBP5 with a novel structure. The molecule simultaneously contains a column [5] arene cavity capable of generating subject-object interaction with a guest molecule and a pyridine group capable of generating coordination interaction with metal ions. DNBP5 is used as a subject, disulfide bond connected bilateral secondary ammonium salt modified G-2SNHP is used as an object, silver ions are used as metal ions, and the metal supramolecular polymer is obtained through orthogonal assembly in a chloroform solution through subject-object interaction and metal coordination interaction. The polymer can form thermal response type gel when the concentration in chloroform is greater than or equal to 100 mM, the phase transition temperature is 45-50 DEG C, and the polymer has a reversible sol-gel conversion behavior, so that the polymer has a wide application prospect in the field of stimulation response intelligent materials.

Spinal fusion is a surgical procedure to treat debilitating back and neck pain where two adjacent spinal vertebrae are fused by inducing bone growth between them. While iliac crest autograft bone has been the gold standard for spinal fusions due to its low cost and reliable fusion results, harvest site morbidity and limited volume have led to a search for alternatives. Provided herein are compositions comprising peptide amphiphiles, soft covalent polymers, and ceramic materials. Composite putty-like materials are provided for medical uses, in particular for the repair of bone / tissue injuries / defects and the regeneration of bone or other tissue.

The application discloses a boiler ash and coking removing agent, a preparation method and application thereof, and belongs to the technical field of coking removing agents. The application is used for solving the technical problems of slow coking removing effect of solid coking removing agents and poor coking removing effect of liquid coking removing agents in the prior art. The boiler ash and coking removing agent comprises aluminum nitrate, potassium nitrate, magnesium nitrate, composite catalyst microspheres, mixed organic acid and water. A multi-amino polyphenyl polycondensate solution and toluene diisocyanate are reacted to obtain a supramolecular polymer solution; sodium hydroxide, dodecyl dimethyl betaine, paraffin wax, copper oxide and iron oxide are uniformly mixed to obtain a mixture; and the composite catalyst microspheres are prepared by coating the mixture with the supramolecular polymer solution; and the composite catalyst microspheres can realize fixed-point blasting under high-temperature conditions. The prepared boiler ash and coking removing agent is sprayed into a boiler in a atomizing mode for coking removing, and has the advantages of rapid coking removing reaction and good coking removing effect.

A polydentate organic ligand has a triphenylamine-pyridine substituted triazole structure with the structural formula I. The polydentate organic ligand having the triphenylamine-pyridine substituted triazole structure and the metal ion are coordinated and driven to synthesize a series of metallo-supramolecular polymers, and the prepared metallo-supramolecular polymers have stable electroactivity, rapid color-switching speeds, and excellent electrochromic performance.

The invention relates to the technical field of cables, and discloses an anti-fatigue-fracture drag chain cable and a preparation method thereof, and the anti-fatigue-fracture drag chain cable comprises at least one conductor formed by twisting a plurality of wires; the insulating layer wraps the conductor to form an insulating wire core; the outer sheath is wrapped outside the insulating wire core; the active management complexing agent is filled in gaps among the multiple strands of wires; the active management complexing agent comprises the following components: carrier base fluid; a lubrication supplement microcapsule; a crack repair microcapsule; the carrier base fluid consists of a main carrier base fluid and a non-covalent bond cross-linking agent; the main carrier base fluid is perfluoropolyether, and the non-covalent bond cross-linking agent is a trimesoyl-based supramolecular polymer. According to the invention, the complexing agent containing the lubricating and repairing microcapsules is filled between the conductors through a specific process, so that the active inhibition of fatigue damage is realized, and the anti-fatigue life of the cable is prolonged.

The application provides a monomer for constructing a supramolecular polymer network, a toughened epoxy resin containing the monomer, and a preparation method and application thereof, and belongs to the technical field of supramolecular polymers.The monomer is composed of an ethoxy columnar arene and a cyano long alkyl chain, and forms a supramolecular polymer network through self-assembly; an epoxy resin monomer and a curing agent polyether amine are cured to form an epoxy resin network; and the supramolecular polymer network and the epoxy resin network are intertwined to obtain a toughened epoxy resin based on a double-network structure.The toughened epoxy resin dissipates energy through dissociation and recombination of host-guest interaction in the supramolecular polymer network, so that the strength and toughness are simultaneously improved, the mechanical properties of the epoxy resin are enhanced, and the toughened epoxy resin has great application potential in the field of high-performance polymer materials.

The application discloses a lignin nanobottle-based photothermal super-hydrophobic deicing coating composition, a coating and a preparation method and application thereof, and belongs to the technical field of coating materials. The coating composition comprises, in mass fractions, 1-20 parts of matured modified lignin nanobottle, 1-10 parts of aminopropyl-terminated polydimethylsiloxane, 1-10 parts of trimesaldehyde, 10-100 parts of hexadecyl trimethylsilane, 10-70 parts of methyl trimethoxysilane and 3000-3500 parts of a solvent. The lignin nanobottle is modified by maturation to enhance the stability and photothermal performance, the aminopropyl-terminated polydimethylsiloxane and the trimesaldehyde are subjected to Schiff base reaction to form an imine bond cross-linked hydrophobic supramolecular polymer, so that the coating has excellent self-healing property and the stability of the coating is enhanced. The various components cooperate with each other, greatly improve the hydrophobic property, weather resistance and deicing property of the coating, and prolong the service life of the coating.

The application discloses a preparation method of a supramolecular polymer gel based on column [5] arene and crown ether reaction, and different supramolecular polymer materials are constructed based on P5-TPN and B21C7-TAS two kinds of host-guest interactions through monomers LP-A, LP-B, EF, C and D. Supramolecular polymer network structures include SPN-EF-1-5, SPN-AC-1-5 and SPN-BD-1-5. The specific operation is as follows: SPN-EF-1-5 is constructed through monomers LP-A, LP-B and EF; SPN-AC-1-5 is constructed through monomers LP-A and C; and SPN-BD-1-5 is constructed through monomers LP-B and D. The preparation method of each SPN material is that LP-A / LP-B is dissolved in 3ml of DCM, then a certain amount of EF / C / D is added into the above solution as a crosslinking agent, and corresponding SPN is obtained.

The present application relates to oil and gas field development reservoir reconstruction technical field, specifically, it relates to a kind of slow acid system for high temperature stratum oil well exploitation, by weight percentage, the slow acid system is made of the following raw material components: hydrochloric acid: 15%-25%; Thickening agent: 0.5%-4.0%; High-temperature corrosion inhibitor: 3.0%-4.0%; Corrosion inhibitor synergist: 0%-2.0%; Iron ion stabilizer: 0.5%-1.5%; Assistant: 0.5%-1.5%; Clay stabilizer: 0.5%-1.5%; Gel breaker: 0.1%-2.0%; The rest is water;Wherein, the thickening agent is emulsion type supramolecular polymer.The emulsion type supramolecular polymer can effectively hinder the mass transfer diffusion of hydrogen ion to rock surface, ensure the feasibility of deep well large capacity construction, and ensure that acid liquid has very strong fracture width capacity and sand carrying capacity in fracture.

The invention discloses a method for preparing PbS quantum dots through in-situ limitation based on water-soluble column [5] arene host-guest interaction and application of the PbS quantum dots. Water-soluble column [5] arene is used as a host compound, a water-soluble phenazine derivative is used as a guest compound, a supramolecular polymer is assembled in a pure water phase through interaction of the host and the guest, and S < 2-> and Pb < 2 + > are sequentially added to generate the PbS quantum dots in situ. The obtained quantum dot is excellent in optical performance and low in biotoxicity, can realize high-sensitivity detection of lactic acid, and is successfully applied to lactic acid targeted imaging in living cells. The method is simple in process and mild in condition, and the prepared quantum dots are good in stability and have wide application prospects in the fields of biosensing and medical imaging.

The invention discloses a chiral gold-copper nanocluster oligomer as well as a preparation method and application thereof. The preparation method comprises the following steps: enabling chiral six-membered ring oxazinyl thione to react with triethylamine and chlorogold in methanol by virtue of a ligand-induced self-assembly strategy, synthesizing a gold-cluster-based supramolecular polymer in situ by virtue of a one-pot method, and then coordinating the gold-cluster-based supramolecular polymer with copper tetraacetonitrile hexafluorophosphate to construct a chiral Au-Cu alloy nanocluster oligomer. The oligomer can trigger the generation of reactive oxygen species (ROS) through a glutathione responsive ligand exchange mechanism, and significantly destroys the redox steady state in bacterial cells. The broad-spectrum antibacterial efficiency on gram-positive bacteria and gram-negative bacteria reaches 100%. The chiral metal oligomer provides a new strategy for developing an anti-infection-healing promoting integrated medical material, and has application potential in the fields of chronic wound dressings and anti-biofilm instruments.

The invention belongs to the technical field of functional material preparation, and particularly relates to a self-healing material and a preparation method and application thereof. The self-healing material has a specific structural formula, can automatically repair the damage of the ice-resistant coating at room temperature without external stimulation, and the repaired ice-resistant coating still has high mechanical strength and tensile property. A polymer chain in the self-healing material spontaneously forms a dynamic supramolecular polymer, strong hydrogen bond interaction force and weak hydrogen bond interaction force exist in a polymer chain segment, a composite hydrogen bond network is formed, the hydrogen bond density is remarkably improved, the number of hydrogen bond donors or acceptors is increased, the hydrogen bonds can be self-healed after being damaged due to reversibility of the hydrogen bonds, and the self-healing effect is good. The repairing efficiency and the self-healing capability are improved.

The present invention provides a method for preparing a high-purity sodium nitroprusside raw material. Take the crude sodium nitroprusside and dissolve it in water at 50-60 °C, drop in anhydrous fatty alcohol, cool down to 20-25 °C, stir, add the supramolecular polymer TPAP-Mb@tQ[14], carry out ultrasonic oscillation, let it stand, perform high-speed centrifugal separation, filter, and collect the filtrate; carry out reduced-pressure distillation until no distillate is distilled out; add water, stir at 40-60 °C, cool to 10 °C and stir, filter, collect the filter cake, and dry it to obtain the first refined product of sodium nitroprusside. The provided preparation method has simple operation, great feasibility in industrial operation, less three-waste discharge, is green, environmentally friendly and sustainable, meets the requirements of industrial safe production, meets the requirements of industrial cost reduction and environmental protection, is conducive to large-scale industrial production, the purity of the prepared sodium nitroprusside is above 99%, up to 100% at most, and the yield is also above 85%, showing significant improvement compared with the prior art process and being more suitable for industrialization.