35results about How to "Improve dispersion stability" patented technology

This invention discloses a nanoRNA delivery system and its application in the control of Sclerotinia sclerotinia disease, relating to the field of biotechnology. The preparation method of the nanoRNA delivery system includes the following steps: mixing chitosan, sucrose, and aspartic acid uniformly and then subjecting them to a hydrothermal reaction to obtain a quantum dot-chitosan degradation product complex; mixing the quantum dot-chitosan degradation product complex with double-stranded RNA to obtain the nanoRNA delivery system; the double-stranded RNA is used to silence Sclerotinia sclerotinia virulence-related transcription factor genes. The nanoRNA delivery system provided by this invention can effectively protect RNA and exhibits a very high inhibitory effect on Sclerotinia sclerotinia in plants, providing a novel technical solution for the green and precise control of Sclerotinia sclerotinia disease.

This invention discloses a low surface energy active-passive synergistic antifouling coating and its preparation method, belonging to the field of marine antifouling materials technology. The preparation method of the antifouling coating includes the following steps: S1, mixing acetone and xylene and stirring under a nitrogen atmosphere to form a mixed solvent; S2, adding vinyl-terminated silicone resin and acrylic resin to the mixed solvent, stirring and heating to obtain a coating base liquid; S3, adding an initiator to the coating base liquid and continuously stirring and heating to react; S4, after the reaction is complete and the coating base liquid cools, adding functional fillers to form a coating liquid; S5, coating the coating liquid and drying to obtain a low surface energy active-passive synergistic antifouling coating. The low surface energy active-passive synergistic antifouling coating prepared by this invention solves the problem in existing marine antifouling technologies where the single antifouling mechanism prevents the simultaneous consideration of environmental friendliness and long-term effectiveness, and has broad application prospects in the field of marine antifouling materials technology.

The application belongs to the technical field of polymer preparation, and particularly relates to a high-strength self-supporting polypyrrole nano array and a preparation method and application thereof. The preparation method comprises the following steps: (1) first, dispersing a hydroxypropyl-beta-cyclodextrin and polyethylene glycol aqueous solution onto an ice surface, and then adding a pyrrole monomer to form a dispersion liquid; (2) adding an acid solution containing an oxidizing agent to the dispersion liquid, and obtaining the high-strength self-supporting polypyrrole nano array after reaction. The application directly uses a macroscopic ice block as a hard template for polypyrrole preparation, and introduces a cyclic molecule hydroxypropyl-beta-cyclodextrin with hydrophilic and hydrophobic dual functions and polyethylene glycol with a linear polymer chain as an array growth aid, so that a high-strength polypyrrole nano sheet array with a self-supporting structure is prepared through a one-step polymerization method. The high-strength polypyrrole nano sheet array can be used as a conductive filler of polyurethane in the field of 3D printing technology, and greatly improves the mechanical properties and antistatic ability of products.

The application discloses a colloidal cerium oxide polishing liquid and a preparation method thereof, and steps are as follows: S1. Dissolving a soluble cerium salt in deionized water, and respectively dissolving a surfactant, a suspension aid and an imidazole modifier in the deionized water and stirring and clarifying, mixing all the solutions, and performing ultrasonic stirring and high-pressure homogenizer circulation treatment to prepare a modified reaction precursor; S2. Continuously stirring the precursor, adding a precipitant at a uniform speed, and stirring after aging by heating to form a colloidal cerium oxide nanosphere solution with a nanosphere appearance; S3. Centrifuging the solution, washing and freeze-drying the solid to obtain a cerium oxide powder, mixing and stirring the powder and deionized water to disperse, and preparing the colloidal cerium oxide polishing liquid. The polishing liquid has uniform particle size, stable dispersion, a high SiO2 / Si3N4 selection ratio, can reduce wafer scratches, guarantee stable polishing performance, and is suitable for the chemical mechanical polishing demand of a semiconductor wafer shallow trench isolation process.

The application discloses a drainage bag with an antibacterial functional layer and a preparation process thereof, and relates to the technical field of medical materials, and comprises the following steps: adding modified montmorillonite into N, N'-dimethylacetamide, uniformly mixing through ultrasonic, adding a polyurethane film, ultrasonic immersion for 60-120 min, drying, and obtaining a drainage bag substrate; adding polylactic acid into N, N-dimethylformamide, uniformly stirring and mixing, adding modified nano zinc oxide, uniformly mixing through ultrasonic, and then performing electrospinning to obtain an antibacterial coating fiber film; placing the antibacterial coating fiber film on the inner side surface of the drainage bag substrate, high-frequency heat sealing, assembling, and obtaining the drainage bag.

This invention relates to the field of health food technology, specifically to a method for preparing a tea oil-based paste and its beverage. This invention develops a tea oil-based paste that can be directly mixed with water. By compounding multiple components such as protein, polysaccharides, and curcumin, and using high-pressure homogenization technology to construct a stable tea oil dispersion system, it significantly improves the problems of oil separation and greasy taste in tea oil beverages. The unsaturated fatty acids and natural antioxidants abundant in tea oil in this invention optimize the nutritional structure of the beverage from both fatty acid composition and functional activity perspectives. After mixing the tea oil-based paste with water, a tea oil-based instant beverage with both nutritional value and good mixing properties can be obtained, aligning with the modern consumer market trend of healthier, more functional, and more convenient beverages.

This invention discloses a self-healing, anti-corrosion, and cooling coating and its preparation method. The preparation method includes: TiO2 surface activation treatment; in-situ construction of a mesoporous silica shell and loading of a corrosion inhibitor; surface silane modification; and coating and curing after blending the obtained filler with resin and curing agent. The coating consists of a polymer resin matrix and a multifunctional core-shell nanocomposite material uniformly dispersed therein; the composite material has a three-level structure of core-shell-interface layer: titanium dioxide as the core, mesoporous silica loaded with corrosion inhibitor as the functional shell, and a silane coupling agent as the interfacial compatibility layer. Through multi-level structural design, this invention enables a single filler to simultaneously achieve high solar reflectance, high infrared emission, and intelligent release of corrosion inhibitors. The coating combines a physical barrier, active corrosion prevention, and radiation cooling triple protection mechanism, and can be widely used for long-term protection of outdoor metal or non-metal substrates.

This invention relates to the field of coating technology, and proposes an aerogel anti-condensation coating and its preparation method. An aerogel anti-condensation coating comprises the following raw materials in parts by weight: 40-60 parts of elastic silicone-acrylic emulsion, 5-7 parts of aerogel, 10-12 parts of polyurethane acrylic resin, 5-10 parts of silica, 5-10 parts of heat-insulating filler, 2-3 parts of film-forming aid, 1-1.5 parts of dispersant, 0.5-1 part of defoamer, 1-2 parts of thickener, and 30-40 parts of water; the heat-insulating filler has a core-shell structure, consisting of a core material and a shell material; the shell material comprises the following raw materials in parts by weight: 9-11 parts of melamine and 7-9 parts of formaldehyde aqueous solution; the core material comprises the following raw materials in parts by weight: 6-8 parts of white oil, 7-9 parts of hexadecane, and 5-7 parts of microcrystalline wax. This technical solution solves the problem of poor heat insulation performance in aerogel anti-condensation coatings in related technologies.

This invention relates to the field of micro / nano manufacturing technology, and in particular to a high-refractive-index fluidized nanoparticle, a hybrid photoresist, a patterned coating, and methods for preparing the respective. The high-refractive-index fluidized nanoparticle comprises a core, the core being modified with a first ligand and a second ligand; the first ligand is one or more selected from methacrylic acid, 4-pentenoic acid, methacryloxypropyltrimethoxysilane, and sodium methacrylate sulfonate; the second ligand is one or more selected from piperidine, N,N-diisopropylethylamine, 1,5,7-triazabicyclo[4.4.0]decene-5-ene, tetramethylguanidine, triethylamine, and tetrahydropyrrole. This invention, through the design of ultra-small metal oxide nanoparticles and innovative organic ligands, successfully solves the technical contradiction of traditional photoresist materials in achieving high resolution, high refractive index, and low curing shrinkage.

This invention belongs to the field of fluorine-free functional ceramic coating technology, and discloses a fluorine-free ceramic non-stick coating for aluminum-based cookware and its preparation method. The coating is composed of composite ceramic powder, a food-grade fluorine-free composite sintering aid composed of cerium oxide and lanthanum oxide pretreated with sodium citrate, food-grade nano-hydroxyapatite pretreated with a silane coupling agent, nano-alumina, a sinterable inorganic precursor, and deionized water in parts by weight. The preparation method includes substrate pretreatment, modified substance pretreatment, slurry preparation, coating, and low-temperature sintering steps. This invention achieves low-temperature sintering, avoids softening of the aluminum-based substrate, reduces energy consumption, and produces a coating with high density, excellent corrosion resistance and aging resistance, no harmful components are released, good non-stick properties, and is suitable for the industrial production requirements of aluminum-based cookware. Furthermore, it is fluorine-free, meeting food safety and environmental protection requirements.

The application discloses a halogen-free water-based flame-retardant emulsion and a preparation method and application thereof. The emulsion comprises a halogen-free flame retardant, a non-ionic dispersant, an anionic dispersant, an anti-settling agent and water; the non-ionic dispersant is selected from a combination of one or more of alkylphenol polyoxyethylene ethers, dodecyl glycoside, Tween and fatty alcohol polyoxyethylene ether; the anionic dispersant is selected from a combination of one or more of sodium polyacrylate, dioctyl succinate sodium sulfonate and fatty alcohol polyoxyethylene ether sodium sulfate; and the anti-settling agent is selected from a combination of one or more of organic bentonite, modified hydrogenated castor oil derivative, polyamide wax, fumed silica and sodium carboxymethyl cellulose. The application adopts a combination of specific types of non-ionic dispersants and anionic dispersants and specific types of anti-settling agents, so that the flame-retardant emulsion has good dispersion stability, moderate viscosity and can adapt to various complex environments such as high-temperature and high-salt environments.

The invention discloses kaolin-graphene composite aqueous slurry and a preparation method thereof. The preparation method comprises the following steps: S1, proportioning and mixing: mixing kaolin and amorphous carbon powder to obtain a solid mixture; s2, conductive networking and forming: adding a conductive auxiliary agent into the solid mixture obtained in the step S1, uniformly mixing, and then tabletting or granulating the mixture to obtain a to-be-treated blank; s3, ultrafast carbon heat treatment: carrying out ultrafast carbon heat treatment on two ends of the to-be-treated blank obtained in the step S2 in a negative pressure environment to obtain a composite filler; and S4, wet dispersion pulping: adding the composite filler obtained in the step S3 into a water-phase dispersion medium, and carrying out high-speed shearing dispersion, so as to obtain the kaolin-graphene composite water-based slurry. The waterborne epoxy anticorrosive coating has the advantages that stable dispersion and constructability can be realized in a waterborne system, and a multi-scale layered shielding network is constructed in a coating film, so that the barrier property and durability of the waterborne epoxy anticorrosive coating are improved.

This utility model discloses a treatment device for mitigating coking of atmospheric residue oil, belonging to the field of petroleum processing technology. The device includes a vacuum furnace and a vacuum tower. The vacuum tower has a packing layer inside. Its key feature is that it further includes a hydrogenation reactor and a gas-liquid separator. The outlet of the vacuum tower is connected to the inlet of the hydrogenation reactor via a pipeline. The outlet of the hydrogenation reactor is connected to the inlet of the gas-liquid separator via a pipeline. The liquid phase outlet of the gas-liquid separator merges with the atmospheric residue oil feed stream and is then connected to the inlet of the vacuum furnace via a corresponding pipeline. The outlet of the vacuum furnace is connected to the inlet of the vacuum tower via a pipeline. This utility model, by adding a hydrogenation reactor and a gas-liquid separator and reorganizing the pipeline connections, allows the wash oil to be pretreated before mixing, fundamentally improving the thermal stability of the oil, reducing the coking tendency of the residue oil, and extending the operating cycle of the device.

The application discloses an epoxy resin-nano cerium oxide composite polishing liquid and a preparation method thereof. The epoxy resin-nano cerium oxide composite polishing liquid comprises the following components in parts by weight: 10-25 parts of water-based epoxy resin, 3-5 parts of modified epoxy resin, 15-30 parts of nano cerium oxide, 20-40 parts of water, 10-20 parts of ethanol, 2-5 parts of a dispersing agent, 1-3 parts of a surfactant, 0.5-2 parts of a stabilizing agent, 0.1-0.5 parts of polydimethylsiloxane and 0.3-1 part of a preservative. The modified epoxy resin is prepared by modification of a silane coupling agent, tris(4-carboxyphenyl) imidazole and fulvic acid. The preparation method is completed through the steps of preparing a solvent system, dispersing nano cerium oxide and composite grinding. The method can strengthen the interfacial bonding force, inhibit the abrasive aggregation, improve the dispersion stability, polishing performance and storage durability of the polishing liquid, and reduce the surface roughness of a workpiece, and is suitable for precision machining of optical elements, semiconductor wafers and the like, and meets the needs of high-end manufacturing ultra-precision polishing.

This invention discloses a cement-based two-component grouting material modified with nano-hexagonal boron nitride. The grouting material raw materials include component A and component B. Component A includes cement, retarder, micro-expansion agent, and nano-modified h-BN. Component B includes water glass. The nano-modified h-BN is obtained by ball milling and modification of h-BN. Non-ionic hydrophilic covalently grafted nano-hexagonal boron nitride is used as an external modified filler in the cement-water glass two-component grouting material. It works together with retarders, expansion agents, and other additives to improve the dispersion stability of nano-boron nitride in the cement-based grouting material slurry (high electrolyte environment), thereby improving the dispersion uniformity of nano-hexagonal boron nitride in the stone body. It can retain effective stone components, improve the overall density of the grout after molding, reduce slurry dissolution, inhibit ion permeation rate, reduce environmental damage during grouting, and help maintain ecological balance.

The application relates to a CMP composition for obtaining a high-quality SiC single crystal substrate surface, which is prepared from the following raw materials in percentage by weight: 20-50 wt% of polishing abrasive, 3-5 wt% of oxidizing agent, 0.1-0.5 wt% of surfactant, 0.2-0.5 wt% of hydrogen bond regulator, 0.2-1 wt% of polishing accelerator, 0.01-0.05 wt% of defoaming agent, and the balance of water; the CMP composition is neutral. The CMP composition uses silicon oxide as the abrasive, introduces the hydrogen bond regulator, the polishing accelerator and the oxidizing agent, improves the polishing rate of the silicon carbide wafer CMP, realizes that the surface roughness Ra of the silicon surface after cleaning can reach below 0.07 nm, the surface after cleaning is free of large particles (>0.2 um), meanwhile, the silicon oxide raw material does not need to be treated, has excellent long-term storage stability, and the system does not have the phenomena of particle agglomeration and sedimentation with the prolongation of the storage time, and excellent polishing surface quality can be obtained in the subsequent polishing process.

This invention provides a zinc-rich heavy-duty anti-corrosion coating and its preparation method, belonging to the technical field of coating compositions. The method includes the following steps: mixing bisphenol A type liquid epoxy resin, zinc gluconate-supported modified GO, dispersant, defoamer, and a mixed solvent; sequentially adding fumed silica, polylactic acid@garnet composite powder, and zinc powder while stirring to obtain component A; separately mixing and stirring a polyamide curing agent and a curing accelerator to obtain component B; mixing and stirring component A and component B and defoaming to obtain the zinc-rich heavy-duty anti-corrosion coating. This invention can enhance the cathodic protection effect and the shielding and barrier ability against corrosive media, thereby improving long-term heavy-duty anti-corrosion performance.

The invention discloses a preparation method for coating one side of glass fabric with polytetrafluoroethylene by a vertical gluing machine, and belongs to the field of manufacturing of bonding sheets in copper-clad lamins.The preparation method comprises the steps that firstly, the glass fabric is installed on a rolling device, and tension is adjusted through a fabric storage mechanism; then, a vertical three-roller precise transfer coating system is used for quantitatively coating the PTFE slurry with the controlled viscosity in a constant-temperature glue storage tank on the cloth surface in a single face mode, and the non-coating face is synchronously gelatinized; the coated cloth enters a six-section type vertical drying oven to be subjected to stepped curing, pre-drying, high-temperature melting, crystallization curing and gradient cooling are conducted in sequence, the temperature of the high-temperature section reaches 380-385 DEG C, and a double-layer air curtain is arranged on the non-coated side for isolation; and finally, cooling to 50-80 DEG C, and rolling. The tension is controlled within the range of 5-15 N / cm through a sectional type vertical tension control system in the whole process. According to the method, single-face accurate coating is achieved, the problems of slurry waste, poor uniformity, many defects, unstable size and the like of a traditional horizontal process are solved, and the product performance is excellent.

A composition is provided that improves the dispersion stability and the photoelectric conversion efficiency of a photoelectric conversion element using the composition. The composition according to the invention comprises: a pigment as a cyclic conjugated compound in which a plurality of pyrrole rings are linked by conjugated bonds; a dispersant; a resin; and a solvent. The composition is characterized in that the dispersant is a calixarene compound represented by formula [A], and the mass of the dispersant in the composition is more than 0.20 times the mass of the resin in the composition.

This invention provides a cerium oxide-containing composite sunscreen raw material and its preparation method, belonging to the field of materials technology. The invention involves synthesizing a cerium oxide-containing composite oxide via a co-precipitation method, then using gelatin-chitosan as a wall material to encapsulate the composite oxide. A stable coating layer is formed through cross-linking and curing, reducing the photocatalytic activity of cerium oxide and improving dispersion stability. This invention significantly reduces the potential toxicity of traditional chemical sunscreens to the human body, while expanding the photoprotection range to the visible light region, achieving "full-spectrum" (200-800 nm) protection.

The application relates to the technical field of building materials, and particularly discloses a high-strength and durable grouting material as well as a preparation method and application thereof. The high-strength and durable grouting material provided by the application introduces hydroxyl fatty acid-nano oxide, the existence of the hydroxyl fatty acid can effectively improve the dispersion stability of the nano oxide in a cement matrix, microdefects are avoided, and the hydroxyl fatty acid can be directionally migrated to pore inner walls and an aggregate / steel interface in a hydration process, a dense and hydrophobic molecular film layer is constructed in situ, and multiple performance synergistic improvements are simultaneously realized; the hydroxyl fatty acid-nano oxide and amorphous aluminosilicate microspheres are simultaneously introduced, the pore structure can be effectively refined, the connected capillary pores can be blocked, the chloride ion diffusion and early self-shrinkage can be significantly reduced, and the synergistic improvements of high strength, frost resistance, impermeability, low-temperature resistance, micro-expansion and excellent fluidity are realized.

This invention provides a polymer electrolyte, its preparation method, and its application. The raw materials of the polymer electrolyte, by mass, include the following components: 8-12 parts of an olefin polymer, 4-8 parts of a sodium salt, 0.4-1.2 parts of hydrophobic fumed silica (SiO2), 7-30 parts of a fluorinated small-molecule plasticizer, and 35-85 parts of a solvent. The polymer electrolyte of this invention uses a fluorinated small-molecule plasticizer with weak solvation ability as the plasticizer in the electrolyte, which improves the mechanical properties of the electrolyte membrane. Simultaneously, it forms a competitive coordination effect with the residual solvent with strong solvation ability, which is beneficial for inhibiting the corrosion effect of sodium salt on the current collector. The hydrophobic fumed silica filler reduces the crystallinity of the polymer matrix and enhances the mobility of the polymer matrix segments, thereby improving the ionic conductivity.

The present invention provides a solvent type pigment dispersion composition containing a resin having good compatibility with various pigment dispersion pastes and / or various resins, and further provides a high concentration solvent type pigment dispersion composition. A solvent type pigment dispersion composition containing a branched polyester (A) containing, as a constituent component, a component containing a polyol (a1) having 3 or more reactive functional groups, a dicarboxylic acid and / or a dicarboxylic anhydride (a2), and a mono-epoxide having a long chain hydrocarbon group (a3), a pigment dispersing resin (B), a pigment (C), and an organic solvent (D).

The application discloses a magnesium-aluminum alloy workpiece and a surface nano processing method thereof, and relates to the technical field of metal material processing technology.The roughening liquid adopts sulfuric acid to realize surface etching, forms uniform corrosion pits, and is matched with hydroxyethylidene diphosphonic acid corrosion inhibitor to effectively inhibit the pitting corrosion and intergranular corrosion of the magnesium-aluminum alloy and avoid excessive roughening to cause the strength of the base material to decrease.During ash removal, an alkaline medicine liquid is added with a surfactant, isostearyl alcohol polyoxyethylene ether is used as a non-ionic surfactant, residual ash in the corrosion pits is stripped, an activated metal surface is exposed, and the uniformity of subsequent electrolytic treatment is ensured.The application generates a stable and firm composite oxide film on the surface of the magnesium-aluminum alloy workpiece through electrolytic treatment, uniform nano holes are formed on the oxide film, and the bonding performance of the magnesium-aluminum alloy workpiece subjected to nano injection molding is improved.

The present application relates to the technical field of mesoporous materials, and particularly to an interface pore rich-hydroxyl silica with monodispersity and uniform size, and a preparation and application thereof. The present application provides a preparation method of the interface pore rich-hydroxyl silica with monodispersity and uniform size. The preparation process is to perform a reaction in a water-oil two-phase system. The oil phase is an easily volatile non-water-soluble organic solvent such as n-hexane. Caprylic triglyceride is added to the oil phase. A non-surfactant pore-forming scheme is adopted. N-octanol and propyl silicate are used as auxiliary pore-forming agents. Sodium silicate is used as a silicon source. Ethyl acetate is used as a catalyst. The synthesis reaction is performed under the condition that the heating temperature is 25-45 DEG C. The prepared silica presents a spherical structure, has uniform particle size, high dispersity, controllable diameter, an open pore structure on the surface and rich silicon hydroxyl, and exhibits good biological safety. The interface pore rich-hydroxyl silica has a great application prospect in the fields of biomaterials, medical adjuvants, food, daily chemicals, cosmetics, electronics and the like.

The application relates to the field of conductive carbon material dispersion, and specifically discloses a composite dispersant for a lithium ion battery preparation process and a preparation method and application thereof. The composite dispersant for the lithium ion battery preparation process comprises amine dispersants and hydrazine dispersants in a weight ratio of (1-3):(1-3), wherein the amine dispersants comprise alcohol amine small molecules, short carbon chain diamines and long carbon chain diamines, the short carbon chain diamines have a carbon chain length of C2-C5, the long carbon chain diamines have a carbon chain length of greater than or equal to C6, and the hydrazine dispersants comprise hydrazine small molecules and PEG grafted hydrazine. The use amount ratio of the composite dispersant to the material to be dispersed is (0.1-0.4):100, the composite dispersant can promote the dispersion of nanomaterials, reduce and stabilize the viscosity of nanomaterial slurry and homogenate slurry, improve the solid content, reduce the cost, avoid the formation of a physical gel in a homogenate system, and ensure the stable and continuous production of a battery production line.

This invention provides a polymer with an interpenetrating network structure, its preparation method, and its application. The method includes: polymerizing a polymer backbone with a first monomer; wherein the polymer backbone is a network; the polymer backbone includes structural units derived from a nonionic monomer, structural units derived from an anionic monomer, and structural units derived from a phenolic resin; the first monomer has the structure shown in formula (A); in formula (A), R0 is a C4-C12 alkyl group. The polymer of this invention does not over-spread at high temperatures or over-shrink at high salt conditions, exhibiting excellent temperature and salt resistance, and good dispersion stability in high-temperature water / salt water. When applied to drilling fluids and / or completion fluids, this polymer effectively reduces filtration loss, optimizes lubrication, and enhances suspension.

This invention relates to the field of nanomaterial preparation technology and discloses a continuous preparation process for nano-titanium sol based on low-temperature crystallization and elemental doping. The process includes: preparing a clean metatitanic acid slurry; constructing a stable basic titanium solution containing hydrogen peroxide and lactic acid; preparing an active doping catalyst solution containing manganese and cerium; online merging the preheated basic titanium solution with the room-temperature catalyst solution, utilizing the chemical heat generated by the decomposition of hydrogen peroxide catalyzed by manganese ions to cause a temperature jump in the fluid, initiating crystallization; introducing the fluid into a tubular reactor for continuous microbubble crystallization under back pressure; and finally obtaining nano-titanium sol through flash pore formation and rapid cooling stabilization. This invention utilizes the internal heat of reaction to eliminate the heat transfer gradient, utilizes the microbubble barrier effect to inhibit agglomeration, and achieves uniform elemental doping through in-situ catalysis, solving the problems of low heating efficiency, easy agglomeration, and uneven doping in traditional processes. The resulting sol has uniform particle size and good dispersibility.

The preparation method of the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent disclosed by the application is implemented according to the following steps: step 1, preparing Phy-LDH; and step 2, preparing the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent. The application also discloses the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent and application. The application uses sodium phytate intercalated hydrotalcite to expand the interlayer spacing, weaken the interlayer electrostatic effect, reduce the tendency of the sheet layer aggregation, and improve the dispersion stability of the LDH in the castor oil. Meanwhile, the castor oil is modified by phosphate esterification, and a phosphorus-containing group is introduced into the molecule, so that the phosphate esterification modified castor oil and the sodium phytate intercalated hydrotalcite can be uniformly combined to form a stable composite system. The intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent also has the functions of softening and flame retardance.