562 results about "Solvent free" patented technology

The invention discloses a polyurethane modified epoxy resin adhesive as well as a preparation method and application thereof, and the polyurethane modified epoxy resin adhesive is prepared from the following components in parts by mass: 7-10 parts of E51 type bisphenol A diglycidyl ether, 3.5 parts of a phenolic aldehyde amine T31 curing agent and 1-3 parts of synthetic polyurethane, the synthetic polyurethane is prepared from polyether triol, polyether amine, isophorone diisocyanate and glycerol carbonate, and a blending system of the synthetic polyurethane and bisphenol A diglycidyl ether is adopted to be subjected to covalent crosslinking with phenolic aldehyde amine T31, so that the adhesive has high toughness and strength guarantee; the synthetic polyurethane prepared by the method is obtained through simple, green and efficient solvent-free synthesis, and the synthesized product has certain fluidity at room temperature, so that the subsequent stirring preparation process of an adhesive is facilitated. And a solvent-free synthesis method is adopted, so that the use of a toxic organic solvent in the traditional polyurethane synthesis process is avoided, and the synthesis process is greener.

The invention discloses a solvent-free vanillin-hydroxyethyl acrylate double-system closed waterborne polyurethane emulsion adhesive as well as a preparation method and a use method thereof, and belongs to the field of waterborne polyurethane emulsion adhesives. The invention is mainly prepared from the following components in parts by weight: 40 to 50 parts of soft segment monomer, 50 to 60 parts of hard segment monomer, 20 to 40 parts of sealing agent, 0.02 to 0.15 part of catalyst, 0.4 to 0.6 part of emulsifier, 0.2 to 0.6 part of initiator, 4 to 12 parts of neutralizer, 5 to 15 parts of functional monomer and 340 to 360 parts of deionized water. According to the double-system closed waterborne polyurethane emulsion adhesive disclosed by the invention, rapid crosslinking curing of the adhesive can be realized through thermocuring, the highest hardness of an adhesive layer can reach about 26 MPa, the adhesive strength is high, and the mechanical property is relatively good.

The invention relates to a preparation method of soybean oil base polyhydric alcohol, in particular to a method for preparing soybean oil base polyhydric alcohol by directly using soybean oil. The soybean oil diluted by using a solvent reacts with hydrogen peroxide with the weight percentage being 30% for 2-5 hours at the temperature of 60-70 DEG C under catalysis of a catalyst with the weight percentage being 3-5%; vacuum distillation is conducted after the reaction is ended, and the solvent is evaporated; then low alcohol is added in a reactor to be subjected to a reaction for 4-6 hours under the pressure of 0.3-0.4 MPa and at the temperature of 70-80 DEG C, then the reaction is stopped, and the soybean oil base polyhydric alcohol is obtained. The method saves the using amount of hydrogen peroxide, reduces the post-treatment steps, and simplifies the production procedures, and accordingly the product cost is declined directly.

The invention provides an elastic polyaspartic acid ester polyurea floor coating and a preparation method thereof, the floor coating comprises a main agent and a curing agent, the main agent comprises first polyaspartic acid ester resin, second polyaspartic acid ester resin, a functional auxiliary agent, and a pigment filler; the curing agent comprises first isocyanate and second diisocyanate; the first polyaspartic acid ester resin is selected from PAE0760, and the second polyaspartic acid ester resin is selected from F520; the first isocyanate is selected from a glycidyl ether compound modified HDI (Hexamethylene Diisocyanate) tripolymer; and the second diisocyanate is selected from HDI (hexamethylene diisocyanate) uretdione. The polyaspartic acid ester polyurea floor coating disclosed by the invention can be used for obviously improving the tensile strength and the scratch resistance of the polyaspartic acid ester polyurea floor coating and improving the leveling property of the polyaspartic acid ester polyurea floor coating while keeping good elastic property, and is a solvent-free polyaspartic acid ester polyurea floor coating with excellent comprehensive performance.

The invention discloses a method for catalyzing degradation of polyolefin mixed plastic by using molten salt. The catalyst is composed of gallium chloride or gallium chloride and other metal chlorides, has a low melting point, high fluidity and strong Lewis acidity, and can degrade polyethylene (PE), polypropylene (PP), polystyrene (PS) plastics and mixtures thereof at 70-170 DEG C under a solvent-free condition to obtain C4-C16 + alkane, olefin and aromatic hydrocarbon. The method is suitable for actual waste plastic resource recovery, and has the advantages of mild conditions, low energy consumption, product controllability and the like.

The invention belongs to the technical field of adhesive tapes, and particularly relates to a UV protective film for packaging substrate cutting and a preparation method thereof.The UV protective film comprises a PO base material layer, a non-solvent type UV viscosity-reducing adhesive layer and a PET release layer, and the non-solvent type UV viscosity-reducing adhesive layer is located between the PO base material layer and the PET release layer; the non-solvent type UV viscosity-reducing adhesive layer comprises the following components: an acrylate soft monomer, an acrylate hydroxyl monomer, an acrylate hard monomer, an acrylate monomer with a space crosslinking site, n-dodecanethiol, a photoinitiator and a photosensitive multifunctional group acrylate monomer. The non-solvent type UV viscosity-reducing adhesive layer is introduced, so that the preparation process is environment-friendly and free of solvent volatilization, the UV protective adhesive is high in viscosity and excellent in impact resistance before UV irradiation, the adhesive layer is stably attached before cutting, and the UV protective film is stripped at low stress and free of residual adhesive after irradiation.

The invention belongs to the technical field of synthetic leather, and particularly discloses breathable stripping-resistant water-based / solvent-free polyurethane synthetic leather and a preparation method thereof.The synthetic leather comprises base cloth, a solvent-free polyurethane layer and a water-based polyurethane surface layer, and the solvent-free polyurethane layer and the water-based polyurethane surface layer are sequentially arranged on the base cloth; modifying and activating the base cloth by a wide plasma cleaning machine; the solvent-free polyurethane layer slurry is prepared from a carbon dioxide-based polyether type A material prepolymer, a polyether type B material prepolymer, color paste, a dispersing agent, isocyanate modified aerogel and nano filler; the waterborne polyurethane surface layer slurry is prepared from epoxy resin modified carboxylic acid type waterborne polyurethane emulsion neutralized by triethylamine, epoxy modified aerogel, waterborne color paste, a defoaming agent and a thickening agent. The modified aerogel is introduced into the solvent-free polyurethane layer and the waterborne polyurethane surface layer, and oxygen plasma pretreatment activation on the base cloth is cooperated, so that the obtained waterborne / solvent-free polyurethane synthetic leather has an excellent breathable function and high peel strength, and has a wide market prospect.

The invention relates to the technical field of TPU, in particular to a solvent-free foamed TPU high-low temperature film and a preparation method thereof. The solvent-free foaming TPU high and low temperature film is prepared from the following raw materials in parts by weight: 25 to 35 parts of isocyanate, 50 to 60 parts of polyhydric alcohol, 8 to 12 parts of a composite chain extender, 0.02 to 0.1 part of a catalyst, 0.1 to 0.3 part of an antioxidant and 0.1 to 0.3 part of an ultraviolet absorbent, the composite chain extender is a mixture of micromolecular dihydric alcohol and a bio-based chain extender. The environment-friendly coating has the advantages of excellent environment-friendly performance, no chemical solvent residue, no VOC (volatile organic compound) pollution, avoidance of tail gas treatment in the preparation process, reduction of energy loss in production, and good mechanical property and temperature resistance.

The invention discloses a high-stability bio-based polyurethane adhesive for artificial turf and a use method of the high-stability bio-based polyurethane adhesive, and relates to the technical field of polyurethane adhesives. The adhesive comprises the following raw materials in parts by weight: a component A: 20-60 parts of bio-oil polyol, 20-60 parts of polyether polyol, 5-15 parts of a chain extender, 0.1-1 part of an anti-aging agent, 1-5 parts of a dispersing agent, 0.1-1 part of a catalyst, 2-5 parts of color paste and 100-300 parts of filler; the component B is prepared from 30 to 60 parts of isocyanate. According to the polyurethane adhesive, environment-friendly solvent-free raw materials are adopted, and the bio-oil polyol is used as a main material, so that the polyurethane adhesive has reproducibility, environmental friendliness and naturalness; the high-performance dispersing agent is added, so that the stability of the polyurethane adhesive is improved, the viscosity of a system is reduced, the bonding strength of the adhesive is improved, the mixing uniformity of polyurethane is effectively enhanced, the stabilizing time is long, the performance is better, and the polyurethane adhesive can be better applied to artificial turf as an adhesive.

A silicate resin that is a liquid at 25° C. in the absence of any solvent is disclosed. The silicate resin has the average formula: [W]a[X]b[Y]c[Z]d, where subscript a is from greater than 0 to 0.5; subscript b is from greater than 0 to 0.5; subscript c is from 0 to 0.5; and subscript d is from greater than 0 to 0.6; with the proviso that a+b+c+d=1; and wherein W, X, Y and Z are defined siloxy units. A method of preparing the silicate resin is also disclosed.

The invention relates to the technical field of anticorrosive paint, in particular to solvent-free and plasticizer-free spraying type metal anticorrosive paint and a preparation method thereof.The solvent-free and plasticizer-free spraying type metal anticorrosive paint is prepared from, by weight, 40-60 parts of polysiloxane resin, 30-50 parts of reactive diluent, 0.3-1 part of epoxy silane coupling agent, 1-3 parts of amino silane coupling agent, 30-40 parts of silica powder and 0.15-0.4 part of organic tin. 1 to 3 parts of vinyl trimethoxy silane, 0.4 to 1.6 parts of anti-aging agent and 0.1 to 0.5 part of polyamide wax; 0.3 to 0.8 part of an organic silicon defoaming agent; by optimizing the matching of the modified polysiloxane resin, the reactive diluent and other raw materials and controlling the addition amount, the provided product achieves high solid content and low viscosity, and comprehensive properties such as adhesive force and mechanical properties are guaranteed while the spraying construction requirement is met.

The invention discloses a preparation method for synthesizing a lithium battery positive electrode material by a solvent-free solid-phase method, particularly relates to the technical field of electrochemistry, and relates to the preparation method for synthesizing the lithium battery positive electrode material by the solvent-free solid-phase method. The lithium battery positive electrode material synthesized by the solvent-free solid-phase method is prepared from lithium acetate, nickel cobaltate, manganese cobaltate and a composite functional agent; the preparation raw materials of the lithium battery positive electrode material synthesized by the solvent-free solid phase method comprise the following components in parts by mass: 100 parts of lithium acetate, 74.3-97.2 parts of nickel cobaltate, 4.0-18.5 parts of manganese cobaltate and 6.8-14.6 parts of a composite functional agent, by adopting lithium acetate as a clean lithium source and combining with a solvent-free solid-phase synthesis method assisted by a composite functional agent, organic solvent pollution and harmful gas emission are eliminated from the source, and the lithium acetate is decomposed at a low temperature without solid residues by utilizing the characteristic of lithium acetate without solid residues and cooperating with a reducing atmosphere generated by decomposition of organic components in the functional agent, so that the lithium-ion battery cathode material is obtained. And the problem of pollution caused by high-temperature decomposition of the lithium salt in the traditional process is effectively avoided.

The application provides a microcapsule, a composite fabric, a preparation method of the composite fabric and a summer quilt. The preparation method of the composite fabric comprises the following steps: A1, treating the top surface and the bottom surface of a moisture-permeable layer by using oxygen plasma; A2, adding microcapsules and a crosslinking agent into water to obtain a sticky liquid; coating the sticky liquid on the bottom surface and the top surface of the moisture-permeable layer in a dotted form, bonding the moisture-permeable layer and a moisture-removing and air-permeable layer by taking the top surface of the moisture-permeable layer as a bonding surface, bonding the moisture-permeable layer and a skin-friendly cool layer by taking the bottom surface of the moisture-permeable layer as a bonding surface, drying and hot pressing; the microcapsule comprises a core material and a shell covering the outside of the core material, the core material comprises a glue, and the glue is selected from glue A or glue B or a combination of the two, the glue A is a solvent-free moisture curing reaction type polyurethane hot melt adhesive, and the glue B is an acrylate with an epoxy group and / or a urethane group. The application can guarantee the moisture permeability and air permeability of the composite fabric.

The invention relates to the technical field of high polymer materials, and discloses a solvent-free modified PI resin and a preparation method thereof, and the solvent-free modified PI resin comprises amino-terminated polyimide powder, acryloyl line, isobornyl acrylate, isocyano ethyl methacrylate and a photoinitiator. The preparation method comprises the following steps: firstly, synthesizing amino-terminated polyimide powder from fluorine-containing diamine and dianhydride, then dissolving the amino-terminated polyimide powder in acryloyl line and isobornyl acrylate, adding isocyano ethyl methacrylate to enable an isocyanate group to react with an amino-terminated group so as to introduce photoactive double bonds, and finally mixing an initiator. The PI solubility is improved through the fluorine-containing structure design, and zero VOC emission is achieved by replacing an organic solvent with the reactive diluent; a uniform cross-linked network is constructed through chemical bonding, so that the microscopic phase separation problem of a physical blending system is solved, second-level photocuring is realized, and the tensile strength and heat resistance of the cured resin are obviously improved.

Liquid embolic compositions, systems, and methods for occluding a treatment site are provided. In some embodiments, a system for occluding a treatment site includes a first precursor composition (Part A) including a first polymer (Polymer A) having a first reactive group (Reactive Group A), and a second precursor composition (Part B) including a second polymer (Part B) having a second reactive group (Reactive Group B). Mixing of Part A and B can cause a covalent crosslinking reaction between the Reactive Group A and Reactive Group B to form an embolic composition. The embolic composition is solvent free, hydrophobic, and immiscible with blood. The embolic composition has an initial viscosity that permits hand injection via a microcatheter to a treatment site and cures to an occlusive, soft solid.

The present invention provides a two-component curing adhesive that suppresses appearance defects even when used as a solvent-free adhesive in the manufacture of barrier substrates. A two-component curing adhesive comprising a polyisocyanate composition (X) containing a polyisocyanate compound (A) and an isocyanate-reactive composition (Y) containing a polyol compound (B), wherein the polyisocyanate compound (A) comprises a polyurethane polyisocyanate (A1), which is a reaction product of toluene diisocyanate and a polyol, and a hexamethylene diisocyanate derivative (A2), and the content of diisocyanate monomer in the polyisocyanate composition (X) is 1.0% by mass or less.

This invention discloses a high-foaming-ratio polyurethane artificial turf backing adhesive, its preparation method, and its application. The polyurethane backing adhesive for artificial turf comprises the following components: a main base material, an organic amine catalyst, a foaming agent, and an organosilicon accelerator. The main base material is composed of a mixture of high-molecular-weight polyether polyol, polymeric polyether polyol, and vegetable oil polyol, with a mass ratio of (2-4):(1-3):(1-2). The high-foaming-ratio polyurethane artificial turf backing adhesive is environmentally friendly, solvent-free, non-toxic, has high pull-out strength, good resilience, and requires less adhesive application.

This invention discloses a BMC material for preparing food contact products and its preparation method. The material comprises the following components by mass percentage: 12%–20% food contact grade styrene-based unsaturated polyester resin (compliant with GB 4806.7-2016); 3%–10% solvent-free PMMA powder; 0.5%–1% zinc stearate; 0.2%–0.6% curing agent TBIC; 0.01%–0.1% polymerization inhibitor TBHQ; 0.01%–0.05% stabilizer BHT; 20%–45% calcium carbonate; 10%–40% aluminum hydroxide; and 5%–10% glass fiber. This invention, by using low-cost food contact grade styrene-based resin combined with solvent-free PMMA powder and optimizing the ratio of TBIC to TBHQ, achieves near-zero styrene monomer residue in the product while reducing costs. This effectively solves the problems of high cost, difficulty in processability adjustment, and monomer residue risk associated with traditional food contact grade BMC materials. The cost of the resulting material can be controlled below 7 yuan / kg, and it has both flame-retardant and high-strength properties, making it a widely viable alternative to traditional food contact grade plastics.

The invention relates to the technical field of polymer coatings, in particular to a solvent-free permeation-resistant anti-corrosion polymer coating and a preparation method thereof. The invention relates to a preparation method of a solvent-free permeation-resistant anti-corrosion polymer coating. The preparation method comprises the following steps: preparation of an MXene nanosheet, preparation of a modified MXene filler, preparation of a slow-release corrosion inhibitor and preparation of a polymer coating. The double modified MXene and the slow-release corrosion inhibitor are adopted to synergistically improve the corrosion resistance of the coating. Modified MXene is subjected to intercalation modification by tannic acid and phytic acid, so that the modified MXene has physical barrier and chemical corrosion inhibition characteristics, the compatibility with a resin interface is enhanced, and the permeation resistance of a solvent-free coating is improved; according to the slow-release corrosion inhibitor, porous titanium-based oxide is used for loading MBT, slow release is triggered when the coating is damaged, active repairing is achieved, the pain point that a traditional coating is damaged and fails is solved, and the corrosion resistance in the severe environment is greatly improved.

The invention discloses a high-barrier two-component solvent-free polyurethane adhesive and preparation and application methods thereof. The high-barrier two-component solvent-free polyurethane adhesive comprises a component A and a component B. The component A comprises, by mass, 30-60% of aromatic polyester polyol and 40-70% of diisocyanate. The component B comprises a mixture of 50 to 70 percent by mass of aromatic polyester polyol, 5 to 20 percent by mass of rosin resin and 20 to 40 percent by mass of polyoxypropylene polyol. The composite film has high bonding strength and is suitable for bonding various aluminized soft package composite structures, the composite film has high barrier property, and the oxygen barrier value is lower than 10 cc / m < 2 >-day.

The application provides a cordierite fiber, a preparation method and a fiber assembly. The cordierite fiber is prepared by mixing cordierite powder after surface modification with photocuring glue to prepare a solvent-free slurry; then the obtained slurry is subjected to fiber drafting through electrospinning or melt-blowing process, and ultraviolet light irradiation is performed during the drafting process to form a fiber primary blank; the cured fiber primary blank is subjected to stepwise heat treatment, sequentially passing through low-temperature glue removal at 400-600 DEG C, medium-temperature transition at 600-1150 DEG C and high-temperature crystallization at 1150-1435 DEG C, and the cordierite fiber is obtained after cooling. The method is synergized by three technologies of surface interface modification, molding process locking and heat treatment system adaptation, and finally the cordierite fiber with uniform structure and excellent performance is obtained, and the three technologies are indispensable.

A three-in-one production line selectively combining a flat position dry method and a solvent-free composite technology comprises a first unit, a second unit and a third unit, the second unit is arranged between the first unit and the third unit, a first connecting plate is arranged between the top of the first unit and the top of the second unit, and a second connecting plate is arranged between the top of the second unit. A second connecting plate is arranged between the top of the second unit and the top of the third unit; the first unit comprises a second unwinding unit and a first coating unit, the second unit comprises a first unwinding unit, a winding unit, a first compounding unit and a second compounding unit, the third unit comprises a third unwinding unit and a second coating unit, a first drying oven is arranged on a first connecting plate, and a second drying oven is arranged on a second connecting plate. And a second drying oven is arranged on the second connecting plate. According to the principle of the utility model, the coating unit and the drying oven are selectively started, and different coating units are replaced, so that a dry method and a solvent-free three-in-one composite process can be freely switched, and the coating process requirements of different composite materials are met.

The invention relates to the technical field of synthetic leather, and particularly discloses easily-coated solvent-free polyurethane synthetic leather and a preparation method and application thereof.The easily-coated solvent-free polyurethane synthetic leather sequentially comprises a water-based surface treatment layer, a water-based polyurethane surface layer, a solvent-free polyurethane bonding layer and a base cloth layer from top to bottom, the solvent-free polyurethane bonding layer is prepared from solvent-free polyurethane bonding layer slurry, and the solvent-free polyurethane bonding layer slurry is prepared from the following components in parts by mass: 85 to 95 parts of polycarbonate polyether polyol, 5 to 15 parts of polyether type thermoplastic polyurethane elastomer micro powder, 90 to 110 parts of isocyanate, 40 to 60 parts of a flame retardant and 0.05 to 0.10 part of an organic metal catalyst. And 0.10 to 0.20 part of an amine catalyst. The polyether type thermoplastic polyurethane elastomer micro-powder is introduced into the solvent-free polyurethane bonding layer slurry, and the polyether type thermoplastic polyurethane elastomer micro-powder in the system can melt and flow during heating processing, so that the thermoplasticity and tensile property of the synthetic leather can be improved.

The application relates to the field of thermal catalysis, and discloses a method for preparing 1-cyclohexylbenzene hydrogen peroxide by solvent-free thermal catalytic selective oxidation of cyclohexylbenzene with molecular oxygen. The method uses a metal bromide as a catalyst, azobisisobutyronitrile or t-butyl hydroperoxide as an initiator, and pure oxygen as an oxidant, and can effectively selectively oxidize cyclohexylbenzene (CHB) into 1-cyclohexylbenzene hydrogen peroxide under normal pressure, solvent-free conditions and at a temperature above 90 DEG C. The catalytic system has the advantages of low cost, simple operation process, high catalytic oxidation efficiency and high selectivity of the target oxidation product.

The present invention relates to a solvent-free thermosetting quantum dot resin composition, a quantum dot resin composite prepared therefrom, an LED package and a display device employing the same and, specifically, to a solvent-free thermosetting quantum dot resin composition having excellent ability to maintain optical characteristics even after long-term driving of a display, a quantum dot resin composite prepared therefrom, an LED package and a display device employing same.

The application discloses a solvent-free phenolated lignin-based polyurethane elastomer and a preparation method and application thereof. A phenolated lignin with high phenolic hydroxyl content is prepared first, and then the phenolated lignin is dispersed in a polyol, and a lignin-based polyurethane elastomer rich in dynamic phenol-type urethane bonds is synthesized by using a one-step solvent-free method, and the synthesis process is green and simple. The phenolated lignin has a lower molecular weight, a higher hydroxyl content and a higher reactivity, and the polyurethane elastomer synthesized by using the phenolated lignin has a double dynamic crosslinking network composed of a phenol-type urethane network and a hydrogen bond crosslinking network. The obtained solvent-free phenolated lignin-based polyurethane elastomer has excellent mechanical properties, reprocessing properties, light-heat self-healing properties and thermal-oxidative aging resistance. The contradiction between the mechanical properties and dynamic mechanical properties of traditional polyurethane elastomers is solved, and a new idea is provided for developing green and multifunctional polyurethane elastomers in future industrial fields.

This invention discloses a polyimide resin prepreg and its preparation method, belonging to the field of composite material preparation technology, and applicable to aerospace, high-end equipment, and other fields with high requirements for prepreg performance. Addressing the problems of poor environmental friendliness, difficulty in controlling resin content, and poor electrostatic adsorption of polyimide resin powder in traditional preparation processes, this invention first prepares 5-30 μm charged modified polyimide resin powder, then removes the sizing agent from the reinforcing fibers and performs plasma charging activation treatment. By optimizing electrostatic adsorption parameters, precise and uniform adsorption of the powder and fibers is achieved. After melt curing and post-treatment testing, a qualified prepreg is obtained. This method is solvent-free, low-energy, can precisely control the resin content to 35-40%, and the resulting prepreg has a volatile content ≤0.5%, no surface defects, and is simple and easily industrialized.

The present application relates to the technical fields of high polymer material and ultraviolet (UV) curing coating, and particularly relates to an epoxy acrylate / itaconic acid derivative composite photocuring coating composition, a preparation method thereof, a photocuring coating layer and application.The photocuring coating composition comprises the following components in parts by mass: an epoxy acrylate / itaconic acid derivative composite photocuring resin: 40-80 parts; an active diluent: 20-60 parts; and a photoinitiator: 1-8 parts.The present application provides a bio-based monomer IG with high crosslinking activity, a green catalyst-free and solvent-free preparation method of the bio-based monomer IG, and an innovative petroleum-based / bio-based resin composite strategy and a coating composition thereof, so that the mechanical strength of the petroleum-based EA is efficiently enhanced, and meanwhile, the mechanical properties of the composite system still maintain a high level after the active diluent is added, the application range of the EA is expanded, and the petroleum-based resin is modified to be green and high-performance.

The invention belongs to the technical field of diaphragma juglandis extraction, and particularly relates to a high-activity diaphragma juglandis aqueous extract as well as a preparation method and application thereof. The preparation method of the high-activity diaphragma juglandis aqueous extract comprises the step of crushing diaphragma juglandis to obtain diaphragma juglandis powder. And mixing the diaphragma juglandis powder and distilled water according to a mass ratio of 1: (10-30), carrying out subcritical extraction at 120-180 DEG C for 30-60 minutes, collecting extract liquor, and filtering to obtain the diaphragma juglandis aqueous extract. Wherein after the subcritical extraction is finished, stirring is kept, condensate water is introduced, the temperature of the extraction liquid is reduced to the room temperature, and then the extraction liquid is collected. The preparation method of the high-activity diaphragma juglandis aqueous extract provided by the invention has the advantages of no solvent residue, short extraction time and high biological activity of the extract.