1741 results about "Polyamine" patented technology

Described herein are sorbents functionalized with polyamines having oxygen-containing units selected from carbonyl units, hydroxyl units, and combinations thereof, methods of making same, and methods of using same.

The invention discloses a polyrotaxane covalent organic framework material capable of regulating interlayer spacing through cyclodextrin and application of the polyrotaxane covalent organic framework material, and belongs to the technical field of biological medicine. The polyrotaalkylated covalent organic framework material is obtained by taking a cyclodextrin aromatic multi-amino inclusion compound and a (multi-aldehyde bipyridine) ruthenium (II) complex as structural units and carrying out copolymerization; the cyclodextrin aromatic polyamine inclusion compound is a beta-cyclodextrin p-phenylenediamine inclusion compound with a hydroxyl group or without a hydroxyl group; the (multi-aldehyde dipyridyl) ruthenium (II) complex is tris (4, 4 '-diformaldehyde-2, 2'-dipyridyl) ruthenium (II). The interlayer spacing of the polyrotaxane covalent organic framework material is greatly increased by utilizing a cavity of gamma-cyclodextrin, and meanwhile, the material has excellent photo-thermal and photodynamic activity, is positively charged, and can better adsorb negatively charged bacteria; and the hydrogel is good in biocompatibility and free of toxic and side effects, and has an excellent treatment effect on wounds infected with staphylococcus aureus.

The invention discloses a high-viscosity activated rubber powder grafted functionalized block copolymer composite modifier and preparation thereof, composite modified asphalt and preparation and application thereof, and belongs to the technical field of modified asphalt. The composite modifier disclosed by the invention is formed by grafting catechol / polyamine modified aminated rubber powder and an epoxidized block copolymer. A catechol / polyamine group and an amino group are subjected to a condensation reaction to jointly modify the surface of the rubber powder, so that the surface of the rubber powder has rich functional groups and active sites, the rubber powder and an epoxidized block copolymer are subjected to a chemical crosslinking reaction in the later period, and the effect of enhancing the full performance of asphalt by the composite modifier is achieved; the problems that the composite modifier and the modified asphalt are prone to agglomeration, poor in compatibility and the like are solved. A self-healing mixture prepared from the composite modified asphalt and a self-healing material together has synergistic effects of the composite modified asphalt and the self-healing material, so that the pavement performance and the use quality are effectively improved, the service life of a road is prolonged, the energy loss is reduced, and the composite modified asphalt has application value in the field of roads.

The invention discloses a colorful acid and alkali resistant laser printing ink and a preparation method thereof. The printing ink is composed of the following components in parts by weight: 0 to 30 parts of butanone, 10 to 30 parts of isopropanol, 2 to 6 parts of curing agent, 10 to 15 parts of pigment, and 10 to 30 parts of glycidyl ether epoxy resin. The glycidyl ether epoxy resin is adopted to produce the printing ink, aliphatic polyamine is further chosen as the curing agent, the acid and alkali resistant performance of the printing ink is strengthened through optimizing the formula, thus the shortage that the colorful laser printing ink is lost when being mixed with acid and alkali is overcome, moreover, the color of the laser printing product is more abundant, and the patterns are more clear.

The invention belongs to the field of preparation of non-isocyanate polyurethane, and particularly relates to a preparation method of an extreme-environment-resistant non-isocyanate polyurethane adhesive, which comprises the following steps: preparing a cyclic carbonate monomer containing a rigid structure, selecting the type of di / polyamine, and adjusting the ratio of a flexible chain segment amine compound to a rigid amine compound, thereby obtaining the extreme-environment-resistant non-isocyanate polyurethane adhesive. A series of non-isocyanate polyurethane adhesives with excellent mechanical properties are prepared, and controllability of bonding strength and extreme environment resistance is realized. The adhesive disclosed by the invention is simple in synthesis method, reaction conditions are easy to control, and the lap joint shear strength of bonded Al can reach 16.7 MPa; the lap joint shear strength at the low temperature of-196 DEG C reaches 15.6 MPa; and the overlapping shear strength at the high temperature of 190 DEG C reaches 15.2 MPa. After a bonded sample is soaked in a solvent for 24 h, the lap shear strength can still be maintained at 15.4 MPa or above and can reach 16.5 MPa, and the adhesive can be widely applied to the fields of aerospace, medical instruments, chemical product packaging and the like and has good market prospects.

The invention discloses a water quality stabilizer suitable for in-furnace treatment of medium-pressure, high-pressure and ultrahigh-pressure boilers and a preparation method of the water quality stabilizer. The water quality stabilizer comprises polyamine organic amines, an organic deoxidant, high-molecular polymeric salt, a silt adjusting agent and pure water. According to the water quality stabilizer disclosed by the invention, one medicament can replace three medicaments of ammonia water, hydrazine and trisodium phosphate added in a traditional boiler, the water quality stabilizer has multiple functions of film forming, corrosion inhibition, deoxygenization, passivation, scale inhibition, scale dissolution, dispersion, chelation, water quality stabilization and the like, meanwhile, the discharge capacity of the boiler can be greatly reduced, the heat energy loss and the water waste can be reduced, and the heat energy utilization rate can be improved. The preparation method disclosed by the invention has the advantages of good batch production effect, stable product performance and long shelf life.

A full-bio-based flame-retardant material and a preparation method therefor. The composition of the full-bio-based flame-retardant material comprises a hexaldehyde bio-based phosphazene monomer, and a castor oil polyamine and / or a furyl diamine, wherein the molar ratio of the total amino groups in the castor oil polyamine and furyl diamine to the aldehyde groups in the hexaldehyde bio-based phosphazene monomer is 1 : (0.8-1.2). The full-bio-based flame-retardant material is a full-bio-based material, and the mechanical and the flame-retardant properties thereof can be adjusted and controlled by adjusting the content of the castor oil polyamine and furyl diamine to adapt to the different requirements of different products for the flame-retardant material. Moreover, the full-bio-based flame-retardant material further has self-repairing, reprocessing and degradability properties.

The invention relates to a bis-polyisobutylene alcohol amine compound and compositions thereof. The invention also is directed to a new process for making the bis-polyisobutylene alcohol amine by reacting a polyisobutylene epoxide with a polyamine, optionally in the presence of a catalyst, a protic solvent initiator and / or a diluent. In addition, the invention further relates to the many uses of the bis-polyisobutylene alcohol amine including but not limited to its use in lubricants, surfactants, emulsifiers, resins, and the like.

The invention belongs to the technical field of coatings, and particularly relates to a composite organic silicon anticorrosive coating and a preparation method thereof.The composite organic silicon anticorrosive coating further comprises the following raw materials in parts by weight besides a solvent: 80-95 parts of phenolic epoxy modified organic silicon resin; 1.4 to 3.5 parts of an amine curing agent; 0.08 part to 0.19 part of lithium chloride; 23 parts to 36 parts of filler; the amine curing agent comprises polyamine. According to the composite organic silicon anticorrosive paint disclosed by the invention, under the action of the amine curing agent containing polyamine and lithium chloride, the phenolic epoxy modified organic silicon resin and the filler are mixed and coated on a metal surface, and cross-linking curing of phenolic epoxy molecular chain extension and cross-linking curing of phenolic epoxy molecular chain branch linkage are uniformly carried out; the composite organic silicon anticorrosive coating with excellent impact resistance, hardness and adhesive force is formed.

The invention discloses low-dielectric fluorine-containing silane modified polyimide and an application thereof. The structural formula of the low-dielectric fluorine-containing silane modified polyimide is # imgabs0 #; r1 is a fluorine-containing silane group; r2 is an aromatic anhydride group; aR is an aromatic group; and Ar'and Ar ''are one of phenoxy benzene groups or fluorine-containing biphenyl groups. The preparation method comprises the following steps: dissolving a hydroxyfluorene diamine compound, ether-containing polyamine and fluorine-containing polyamine in a polar organic solvent in an inert atmosphere, and then adding dianhydride and an end-capping reagent for condensation polymerization to obtain polyamide acid; the preparation method comprises the following steps: mixing polyamide acid, a water-carrying agent and fluorine-containing silane, and carrying out imidization reaction to obtain the low-dielectric fluorine-containing silane modified polyimide. The fluorine-containing silane polyimide prepared by the invention has a large-volume fluorenyl structure, flexible ether bonds, a silane structure and fluorine atoms with relatively high electronegativity, so that the prepared fluorine-containing silane polyimide has relatively low dielectric properties, and the processability of the polyimide and the solubility of the polyimide in various organic solvents are also improved.

Binder compositions are described that include at least one formaldehyde-containing compound, a cyclic urea-dialdehyde compound, and a polyamine compound. The polyamine compound may be selected from melamine and dicyandiamide. The weight ratio of the at least one formaldehyde-containing compound to the combined weight of the cyclic urea-dialdehyde compound and the polyamine compound may be greater than or about 1:1. As described are binder-containing fiberglass products that include glass fibers and a binder. The binder may include a formaldehyde polymer characterized by crosslinking with a cyclic urea-dialdehyde and a polyamine. The binder-containing fiberglass products have reduced formaldehyde emissions.

The invention discloses a polyamine cross-linked network structure with high stability and a preparation method and application thereof, the structure takes an inorganic porous material as a carrier, the inorganic porous carrier and polyamine are cross-linked by using a silane coupling agent, and a cross-linking agent is introduced to cross-link polyamine molecules so as to form a solid adsorbent. The adsorbent still has more than 95% of adsorption capacity after 50 times of adsorption cycles, the desorption enthalpy is in the range of 50-80 kJ / mol, the regeneration energy consumption is in the range of 1.5-2.0 GJ / ton-CO2, and the high-stability and low-energy-consumption CO2 trapping characteristic enables the adsorbent to have large-scale application potential.

The invention discloses a pH response type pesticide microcapsule and a preparation method thereof, and the preparation method comprises the following steps: mixing a pesticide raw material, an organic cosolvent and a diisocyanate monomer to obtain an oil phase; mixing a surfactant with water to obtain a water phase; adding the oil phase into the water phase, and carrying out shear emulsification to obtain O / W type emulsion; and mixing the O / W type emulsion with an aqueous solution of polyamine containing the vanillyl Schiff base structure, and carrying out an interfacial polymerization reaction to obtain the pH response type polyurethane pesticide microcapsule with the vanillyl Schiff base structure. According to the invention, the organic cosolvent and diisocyanate are used as oil phase components, can dissolve the raw pesticide and do not react with the raw pesticide, has good pH responsiveness, can realize stimulation response to an acid environment caused by pathogenic bacteria infected crops, improves the utilization rate of the pesticide, and reduces the usage amount of the pesticide.

The invention relates to the technical field of lithium battery positive pole pieces, in particular to a hyperbranched polyamide binder and a preparation method and application of a positive pole piece. The hyperbranched polyamide binder is a high-molecular polymer prepared from a diamine monomer, a polyamine monomer and a diacid monomer through a condensation polymerization reaction; the positive pole piece is obtained by mixing, pulping, coating and drying a positive pole material, a conductive agent and a binder; and the number-average molecular weight of the hyperbranched polyamide binder is 1.5 to 150 thousands. The positive pole piece comprises the hyperbranched polyamide binder disclosed by the invention. The positive pole piece is applied to the lithium battery. According to the hyperbranched polyamide binder, aliphatic raw materials are subjected to polycondensation, the cost of the raw materials is low, the process is simple, production is easy, and good economic benefits are achieved; the pole piece is good in flexibility, thick coating is not prone to cracking, and slurry is good in stability and easy to process; the battery is high in energy density and long in cycle life and has a relatively good application prospect.

The invention provides an antifouling self-cleaning fluorocarbon finish paint as well as a preparation method and application thereof, and particularly relates to the technical field of special coatings. The antifouling self-cleaning fluorocarbon finish paint is composed of a component A and a component B in a ratio of (80-87): 16, the component A is prepared from the following components in parts by weight: 560 to 580 parts of fluorocarbon resin, 30 to 35 parts of a first solvent, 20 to 40 parts of a second solvent, 180 to 220 parts of titanium dioxide, 90 to 110 parts of filler, 11 to 20 parts of a light stabilizer, 3 to 5 parts of a thickening agent and 13 to 28 parts of an auxiliary agent; the component B comprises the following components in parts by weight: 20-22 parts of fluorocarbon resin, 4-5 parts of a chain extender, 15-20 parts of a diamine curing agent, 15-20 parts of a polyamine curing agent and 25-35 parts of a second solvent. According to the finishing paint, on the basis of enhancing the self-cleaning capability, the weather resistance of a coating is improved, and the aging and damage of the coating are delayed, so that the service life of the coating is prolonged.

The invention discloses a two-phase absorbent and application thereof. The two-phase absorbent comprises the following components in percentage by mass: 10-35% of a main absorbent, 20-50% of a phase-splitting agent, 0-15% of an accelerant and 0-70% of water, wherein the total mass of the two-phase absorbent is 100%; wherein the main absorbent is polyamine, the polyamine contains more than three amino groups, more than three carbon atoms are arranged between the adjacent amino groups, and at least one of the more than three amino groups is a tertiary amino group; the phase splitting agent is an alcohol ether compound. The two-phase absorbent provided by the invention has better absorption performance, can reduce the generation of oxidative degradation, and has higher oxidation stability.

The invention discloses a super-strong mute building drainage pipe and a preparation method thereof, and relates to the technical field of high polymer materials. Comprising the following raw materials in parts by mass: 100 parts of high-density polyethylene, 5-7 parts of a cold-resistant toughening agent, 8-12 parts of a synergist, 8-10 parts of a sound insulation filler and 0.3-0.5 part of an antioxidant. By introducing the synergist prepared from the components such as polyamine polyether methylene phosphonic acid, zinc nitrate hexahydrate, magnesium nitrate hexahydrate and the like, the sound insulation, flame retardance and smoke suppression capabilities of the drainage pipe can be effectively improved; by introducing the sound insulation filler prepared from the modified halloysite nanotubes, hydroxyl-terminated polydimethylsiloxane, aziridine cross-linking agent and the like, the sound insulation, flame retardance and smoke suppression capabilities of the drain pipe are further improved. Therefore, the drainage pipe prepared by the invention has a wider application prospect.

The invention discloses a polyamine type porous polymer as well as a preparation method and application thereof, and belongs to the technical field of synthesis of porous organic polymers. The specific method comprises the following steps: dispersing beta-mercaptoethylamine, a photoinitiator and a porous framework polymer with carbon-carbon double bond connection in a polar organic solvent; under the ultraviolet light initiation condition, the photoinitiator excites beta-mercaptoethylamine to generate sulfydryl free radicals, and the sulfydryl free radicals and the porous framework polymer with carbon-carbon double bond connection are subjected to an addition reaction; and washing and drying the product after the addition reaction to obtain the amino-modified polyamine porous polymer. The preparation method provided by the invention is rapid in reaction, extremely high in reactant utilization rate and simple in post-treatment, and the prepared polyamine type porous polymer has rich adsorption sites, good stability and excellent carbon dioxide adsorption performance, and can be applied to the field of carbon capture and the like.

Provided is a polyurethane resin composition capable of forming a coating that has high mechanical strength and solvent resistance and that also has scratch resistance and blocking resistance. In a composition containing a polyurethane resin, the polyurethane resin has a structural unit derived from a polyol, a structural unit derived from a polyisocyanate, and a structural unit derived from a polyamine, and the polyol includes a polycarbonate polyol having a structural unit derived from 1,10-decanediol, a polyol compound having an anionic hydrophilic group, a glycol compound represented by HO-(R1-O)n-H, and a polyhydric alcohol having three or more hydroxy groups. The glycol compound has a number-average molecular weight of 500 to 2,500, the polyhydric alcohol is included in an amount of 10% by mass or less relative to a total mass of the polyol, and the glycol compound is included in an amount of 30% by mass or more and 90% by mass or less relative to the total mass of the polyol.

The invention provides a preparation method of a nanofiltration membrane for regulating and controlling interfacial polymerization reaction by utilizing carbon nitride photogenerated charge, and belongs to the technical field of water treatment membranes. The preparation method comprises the following steps: (1) adding carbon nitride film-making sol into an aqueous solution of a polyamine monomer, and carrying out ultrasonic dispersion to obtain a mixed dispersion liquid; (2) preparing an organic phase monomer solution; (3) adding an ultrafiltration support base membrane into the mixed dispersion liquid, infiltrating, then taking out, adding into the organic phase monomer solution, and carrying out interfacial polymerization reaction to obtain a high-permeability membrane containing an ultrathin polyamide separation layer; wherein the infiltration and the interfacial polymerization reaction are carried out under illumination; and (4) carrying out heat treatment on the high-permeability membrane containing the ultrathin polyamide separation layer to obtain the nanofiltration membrane. According to the preparation method disclosed by the invention, the photoelectrochemical characteristics of carbon nitride are utilized, and electrostatic repulsion exists between positive charges on the surface of carbon nitride and piperazine molecules under illumination, so that the interfacial polymerization rate is regulated and controlled, and the high-permeability nanofiltration membrane with an ultrathin polyamide separation layer is further prepared.

The present invention relates to the technical field of nanofiltration membranes, and particularly relates to a high-temperature resistant nanofiltration membrane and a preparation method thereof. The nanofiltration membrane is prepared by this method. The method includes preparing a nano-layer; coating a CHO-SiO2 nano-particle solution with a required mass concentration on the surface of a porous support layer to form a base membrane containing the nano-layer; preparing a high-temperature resistant nanofiltration membrane; immersing the base membrane in an aqueous solution, taking out the base membrane after the first immersion treatment and air-drying the water droplets on its surface; secondly, immersing the base membrane in an oil-phase solution, taking out the base membrane after the second immersion treatment and performing a drying treatment to obtain a high-temperature resistant nanofiltration membrane; the aqueous solution includes polyamine, an acid absorbent, inorganic salts and a first organic solvent; the polyamine is a bis-benzene N-heterocyclic derivative; the oil-phase solution includes polyacyl chloride. The present invention can solve the problem that the directly introduced nano-particles are liable to fall off after film formation in the prior art.

Detergent composition comprising bacterial spores, polyamine and enzyme.

The invention discloses an antifouling and self-repairing non-isocyanate polyurethane coating and a preparation method thereof, the preparation method comprises the following steps: preparation of polycyclic carbonate resin: adding anhydride and polyol into an organic solvent, uniformly mixing, reacting at 100-150 DEG C for 3-5 hours until the acid value is constant, and cooling to room temperature; adding glycerol carbonate, refluxing with xylene, reacting at 180-210 DEG C until the acid value is lower than 3.0 mgKOH / g, cooling to room temperature, washing with water for 2-3 times, and removing the solvent to obtain polycyclic carbonate resin; and preparation of the polyamine curing agent: mixing polyamine, amino-terminated polydimethylsiloxane and an amine compound containing disulfide bonds, and uniformly stirring to obtain the polyamine curing agent. The preparation method disclosed by the invention has the advantages of simple synthesis and low cost, and meanwhile, the prepared non-isocyanate polyurethane coating has good self-repairing property, pollution resistance and corrosion resistance.

The invention discloses a low-temperature curing high-throwing-power cathode electrophoretic coating and a preparation method and application thereof, and belongs to the field of automobile coating materials, the coating is composed of epoxy resin, a fluorosilicone copolymerization type epoxy modifier, a polyamino siloxane-acrylic acid hybrid and other components, and performance improvement is achieved through the synergistic effect of the two brand-new modifiers. Wherein the fluorine-silicon copolymerization type epoxy modifier is prepared by taking bisphenol A epoxy resin as a framework, introducing fluorine-containing alkyl and siloxane groups and carrying out ultraviolet reaction, so that the surface energy is reduced, and low-temperature crosslinking is promoted; the polyamido siloxane-acrylic acid hybrid takes siloxane as a core, and acrylic acid and polyamido are bridged through isocyanate, so that the crosslinking density and the water solubility are enhanced. When the coating is prepared, the two modifiers are mixed with epoxy resin, a solvent and the like, and the coating is prepared through dispersion and dilution. The coating can be cured at low temperature, so that a uniform thick film is obtained in an inner cavity of a complex workpiece, and meanwhile, the coating has excellent corrosion resistance and adhesive force and is suitable for efficient and environment-friendly coating of an automobile body and parts.

The invention relates to the technical field of composite materials, in particular to a high-conductivity thermosetting resin-based composite material and a preparation method thereof.The high-conductivity thermosetting resin-based composite material is prepared from, by weight, 50-80 parts of epoxy resin, 10-30 parts of conductive carbon nanotubes, 20-40 parts of nano-silver particles, 10-20 parts of functionalized polyurethane prepolymer, 5-15 parts of polyamine curing agent and 2-8 parts of organosilane coupling agent. 5-15 parts of graphene nanosheets, 5-15 parts of aluminum borate whiskers and 5-15 parts of barium titanate nanoparticles; 2-10 parts of conductive polymer microspheres; 1 to 5 parts of nano zinc oxide; wherein the conductive polymer microsphere comprises a core formed by polyaniline or polypyrrole, and a polyurethane polymer or a polyacrylate polymer wrapping the outer layer of the core; the surface of the core is modified by adopting nano silver particles and gamma-aminopropyltriethoxysilane; the conductive polymer microspheres are used for providing a long-range conductive path, the nano-silver particles are used for providing short-range conductive connection, and the conductive polymer microspheres and the nano-silver particles form a multi-layer conductive network.

A separation membrane, a preparation method therefor and a use thereof in magnesium and lithium separation are provided. The separation membrane includes, in sequence, a base material layer, a porous support layer, a polyamide layer and a modification layer. Cross-linked polymers forming the modification layer has structural units provided by polyphenols and polyamines, at least some of the structural units provided by the polyphenols are connected to the polyamide layer via ortho positions of phenolic hydroxyl groups. The preparation method includes sequentially preparing the porous support layer, the polyamide layer and the modification layer on the base material layer. The method of preparing the modification layer includes under a first pressure, bringing one side of the polyamide layer into first contact with the polyphenol solution; then under a second pressure, bringing one side of the polyamide layer into second contact with the polyamine solution, to complete a self-assembly reaction.

The invention discloses a preparation method of a high-negative-electricity nanofiltration membrane, which comprises the following steps: step 1, modifying a substrate by using an organic solvent to obtain a hydrophilic substrate; step 2, performing enhanced oxidation treatment on the biomass raw material to obtain biomass nanofibers carrying oxygen-containing functional groups, and depositing the biomass nanofibers on the surface of the hydrophilic substrate to form a biomass nanofiber middle layer; the enhanced oxidation treatment is one or more of oxidant coupling acid treatment, alkali treatment and cell disrupter ultrasonic treatment; the usage amount of the oxidizing agent is 5-50 wt%; and 3, carrying out interfacial polymerization reaction on a polyamine monomer and an acyl chloride monomer on the surface of the biomass nanofiber intermediate layer to prepare the polyamide active layer with the surface Zeta potential lower than-90mV. The high-negative-electricity nanofiltration membrane obtained by the invention has low Zeta potential, high permeability and high ion separation efficiency; the surface of the high-negative-electricity nanofiltration membrane can enhance the Donnan repulsive effect, and the hydrophilicity of the surface of the membrane is improved through a carboxyl-rich structure.

The present invention provides a polyester hot melt adhesive and a preparation method and application thereof. The polyester hot melt adhesive comprises 50-60 parts of a first polyester resin, 10-20 parts of a second polyester resin and 20-30 parts of a third polyester resin in parts by weight; the raw materials for preparing the first polyester resin include aromatic dibasic acid, diol and polyamine; the raw materials for preparing the second polyester resin include aliphatic dibasic acid and aliphatic long-chain diol; the raw materials for preparing the third polyester resin include dibasic acid, diol and polypropylene grafted maleic anhydride. In the present invention, the polyester hot melt adhesive is compounded by three polyester resins with specific structures, so that the polyester hot melt adhesive has both excellent high temperature resistance and low temperature resistance, can be used for a long time under high and low temperature conditions, will not have debonding, film shrinkage, edge warping and other phenomena, has good high and low temperature cycle resistance, and has low construction viscosity, good adhesion to a variety of substrates, high adhesion, and a wide range of applications.

The invention relates to the technical field of coatings, in particular to a corrosion-resistant coating material and a preparation method thereof. The corrosion-resistant coating material comprises the following components in parts by mass: 80-100 parts of epoxy resin, 5-20 parts of a modified phenolic aldehyde amine curing agent, 2-5 parts of a waterproof agent, 5-10 parts of a corrosion inhibitor and 40-55 parts of a lubricant. The modified phenolic aldehyde amine curing agent is obtained by carrying out Mannich reaction on phenol, thymol, aliphatic polyamine and formaldehyde. The phenol provides a rigid benzene ring structure, and endows a cured product with good heat resistance and chemical resistance. Thymol improves the flexibility and adhesive force of the cured product and enhances the hydrophobicity of the cured product at the same time. The epoxy resin and the modified phenolic aldehyde amine curing agent are polymerized, the waterproof agent, the corrosion inhibitor and the lubricant are wrapped, and the obtained coating material has good adhesive force and corrosion resistance.

The invention relates to a brand-new microbial natural metabolite, namely Fcl-8, which is derived from a fermentation solution of Xenorhabdius budapestensis XBD8, and is characterized in that the Fcl-8 is a new microbial natural metabolite, namely Fcl-8, which is derived from the fermentation solution of the Xenorhabdius budapestensis XBD8. The purified Fcl-8 is a snow white flocculent crystal and is very easy to dissolve in water, and the solid state of the purified Fcl-8 is as shown in Figure 1. The chemical structural formula of the Fcl-8 is as shown in a figure 2, the chemical formula is C57H102N14O12, the molecular weight is 1175.78744, and the typical secondary mass spectrum information of the Fcl-8 is as shown in a figure 3. The Fcl-8 is derived from a microbial natural metabolite, is novel in structure and high in biological activity, and has very high potential to be developed into a novel biopesticide.