237results about How to "Does not represent or limit the scope of rights protection" patented technology

The invention relates to a manganese-based composite oxide catalyst for catalytically decomposing ozone, and a preparation method of the catalyst. The catalyst comprises manganese oxide and at least one transition metal oxide. The preparation method is a homogeneous precipitation method or a hydrothermal synthesis method. The manganese-based composite oxide catalyst adopts innocuous and non-poisonous materials, prepares a manganese-based composite oxide catalyst with high catalytic activity, good wet resistance and high catalytic deposition content by the simple and easy method, so that the catalyst is suitable for catalytically decomposing ozone produced in water or air treatment and modern industry and home appliance.

The invention relates to anti-bacterial water-based paint and a preparation method thereof. The paint comprises the following components in parts by weight: 0.2-11 parts of anti-bacterial agent, 8-33 parts of nano material, 23-64 parts of water-based resin dispersoid and 0.75-18 parts of adhesive resin or plasticizer. The preparation method comprises the following steps: firstly preparing a nano silver anti-bacterial agent; mixing deionized water, the anti-bacterial agent, a wetting agent, a dispersing agent and a defoaming agent and uniformly mixing, adding the nano material, uniformly dispersing to obtain the water-based dispersoid; adding the obtained water-based dispersoid to the mixed emulsion or water-based resin dispersoid, then adding the adhesive resin or plasticizer and various conventional assistants, stirring and dispersing evenly; adding pigments or colorant; and supplementing water to obtain the anti-bacterial water-based paint. The long-acting broad-spectrum antibacterial water-based paint has high fungicidal efficiency (more than 99%) on escherichia coli, staphylococcus aureus, black varietas of bacillus subtilis and the like and can reduce the high concentrate of organic matters of formaldehyde to the range of specified concentration index.

The present invention relates to a production method for a seaweed bio-composite organic liquid fertilizer. The method comprises the following steps: carrying out crushing grinding on fresh kelps; adding the crushed kelp slurry to a fermentation tank, and adding water; adjusting the pH value to 6.8-8.8, adding a composite enzyme and a microbial fermentation bacteria agent, uniformly stirring, and heating to a temperature of 25-60 DEG C, wherein the thermal insulation fermentation time is at least 85 hours; and filtering, and adding an acid production bacterial agent to obtain the seaweed bio-composite organic liquid fertilizer. According to the present invention, the water used in the method adopting the fresh kelps as the raw material to produce the product is saved by 90% compared with the method adopting the dried kelp raw material to produce the product; the energy is saved by 40% by adopting solar heating and thermal insulation fermentation production, the production cost can be reduced by 25%, and characteristics of energy saving, water saving, low carbon and environmental protection are provided; the seaweed bio-composite organic liquid fertilizer of the present invention has effects of combination of organic fertilizer, inorganic fertilizer, microbial fertilizer, and medium and trace element fertilizer, rapid acting, long lasting time, synergy, fertilizer retention, water retention, cold resistance, insect repelling, disease resistance, soil improving, and the like.

The invention relates to an alginate antibacterial dressing and its preparation method. The preparation method comprises the following steps of: preparing a spinning stock solution from soluble alginate, a water-soluble chitosan derivative or water-soluble chitin derivative and simultaneously adding a silver-based antibacterial agent into a coagulation bath, carrying out wet spinning to obtain a blend fiber product and further obtain the alginate antibacterial dressing, which can be used as a wound dressing, a hemostatic material and the like. The antibacterial dressing obtained in the invention has good biocompatibility, permeability and water absorption, can be used to rapidly stop bleeding, ease pain and promote wound healing, continuously acts on regenerative bacteria, and has a lasting and high-efficient sterilizing characteristic.

The invention relates to a manganese dioxide / carbon combined electrode and an electric adsorption method for electrically adsorbing heavy metal ions from water. The manganese dioxide / carbon combined electrode is manufactured by taking a carbon material as a substrate and supporting manganese dioxide on the substrate. A voltage is applied to the manganese dioxide / carbon combined electrode so that electropositive heavy metal ions in water migrate to a cathode under the action of electric field force, and therefore, heavy metal ions in water are removed by electric adsorption. The manganese dioxide / carbon combined electrode is simple in preparation method, large in capacitance, high in electrochemical stability and large in specific surface area of electrode, and thus very suitable for being used as an electric adsorption electrode material; under the action of the applied electric field, the adsorption effect of the supported manganese dioxide on heavy metal ions is enhanced, quick and efficient removal of heavy metal ions in water can be realized and quick and convenient regeneration of the electrode material also can be realized; the shortcoming in the prior art low-concentration heavy metal ions in water are hardly removed is overcome, and therefore, the manganese dioxide / carbon combined electrode and the electric adsorption method can be used for removing the heavy metal ions having the concentration of several to dozens of ppm out of water.

The invention relates to a waterproof coating, in particular to a high polymer waterproof coating applied to building industry and a preparation method thereof. The high polymer waterproof coating comprises the following components in parts by weight: 3-20 parts of polyurethane, 0.1-5 parts of reactive polysiloxane compounds and 4-8 parts of polyvinyl alcohol, and further comprises the following components in parts by weight: 0.5-3 parts of high-melting-point polyethylene wax emulsion, 0.1-2 parts of tackifiers, 0.2-2 parts of nonionic surfactants and a defoaming agent. The high polymer waterproof coating, provided by the invention, has the characteristics of excellent high temperature resistance, low temperature resistance and shock chilling and shock heating change, good ductility and elongation at break in a wide temperature range, strong adhesive force, corrosion resistance, ageing resistance, safety and environmental friendliness, and is suitable for being coated on the surfaces of multiple substrates in building industry.

The invention relates to a lithium iron vanadium manganese phosphate nano oxide compound anode material and a preparation method thereof. The lithium iron vanadium manganese phosphate nano oxide compound anode material comprises a component A and a compound B carbon source, wherein the component A comprises 95-99.9wt% of lithium iron vanadium manganese phosphate compound Lix+3y+zFexV2yMnz(PO4)x+3y+z and 0.1-5wt% of nano oxide; and the component B carbon source accounts for 0.5-35wt% by mass of the lithium iron vanadium manganese phosphate compound Lix+3y+zFexV2yMnz(PO4)x+3y+z in the component A. The preparation method of the compound anode material comprises the steps of: firstly weighing a lithium source, an iron source, a vanadium source, a manganese source and a phosphorus source according to proportions, uniformly ball-grinding and mixing, pre-sintering after tabletting, crushing, adding the nano oxide and the component B carbon source, ball-grinding, calcining, crushing and refining. The lithium iron vanadium manganese phosphate nano oxide compound anode material provided by the invention has better crystallinity and conductivity as well as high specific capacity, and has wide application prospects in the field of lithium ion batteries.

The invention relates to a surface skid-resistant coating composition which comprises the following components in parts by weight: 12-75 parts of epoxy resin and organic silicon resin, 30-60 parts of a synthetic particle material and 2-13 parts of an amine function curing agent. The surface skid-resistant coating composition also comprises a surfactant and a conventional additive. The synthetic particle material is used for replacing traditional glass beads, quarts sand and the like, thus the surface skid-resistant coating composition is better in hand feel of a coating film, has skid resistance of the existing product, and has high scratch resistance, abrasion resistance, and resistivity to outside chemical materials.

The invention relates to a waterproof coating, in particular to a high molecular waterproof coating and a preparation method thereof. The high molecular waterproof coating is prepared from a powder material and a liquid material in the weight ratio of (1-5):1, wherein the powder material comprises the following components in parts by weight: 0.1-5 parts of reactive polysiloxane compound, 1-5 parts of polypropylene chopped fiber, 10-50 parts of quartz powder, 30-70 parts of calcium carbonate and 1-15 parts of bentonite; and the liquid material comprises the following components in parts by weight: 30-80 parts of polyvinyl acetate emulsion, 0.5-5 parts of thickening agent, 0.5-5 parts of sterilizing agent, 0.1-3 parts of organic silicon antifoaming agent and 10-40 parts of water. The high molecular waterproof coating has the advantages of no pollution to human bodies and the environment, readily-available raw materials, low cost, easiness for preparing, convenience for construction, safety, environment friendliness, excellent physical property, strong bonding force, high extensibility, prevention of water and rust and the like, and can be applied to waterproofness of indoor and outdoor buildings.

The invention relates to a waterborne epoxy antirust paint and a preparation method. The antirust paint mainly comprises a component A and a component B; the component A comprises the following constituents in percentage by mass: 40-55% of paint paste mixture, 43-58% of epoxy resin emulsion and 1.2-8% of auxiliary II, wherein the total of the constituents aforementioned is 100% by weight; the paint paste mixture comprises the following constituents in percentage by mass: 40-85% of pigments and fillers, 0.3-6% of auxiliary I and the balance of water; and the component B is a curing agent. The preparation method comprises the following steps of: preparing the paint paste mixture according to prescription amounts, and mixing and stirring the paint paste mixture, the epoxy resin emulsion and the auxiliary II according to prescription amounts to obtain the component A; and packaging the component A and the component in a ratio by mass. The waterborne epoxy antirust paint obtained by the prescription disclosed by the invention is excellent in water-resistant, oil-resistant, acid-base-resistant, salt-mist-resistant performances and the like, excellent in anti-rust and anti-corrosion performances, and good in mechanical performances of adhesion force, flexibility, impact resistance and the like.

The invention relates to a method for promoting rapid drying of dredged silt by a microorganism. The method includes: taking straw and other organic matters as a substrate, conducting anaerobic fermentation and decomposition, burying the substrate in a silt storage yard, pre-burying a vacuum pumping pipe network system, inputting dredged silt, and then adding a flocculant and a coagulant aid to perform initial concentration, vacuum pumping, compression and other processes. The method for promoting rapid drying of dredged silt by a microorganism makes use of life activities of the microorganism and the produced gas to change the compact silt state formed during vacuum pumping, makes the silt become loose and porous, promotes flow of moisture, thereby improving the water pumping and drainage effect of vacuum preloading, and transforming the dredged silt from a fluid state to a plastic state or semi-solid state rapidly. Thus, the method realizes rapid dewatering and drying of dredged sludge, and has the characteristics of low cost and short construction period.

The invention belongs to the technical field of sealants, and specifically to a diatomite chloroprene type sealant. The diatomite polychloroprene type sealant is prepared by carrying out milling and kneading the following materials according to a formula, wherein the materials comprise chloroprene rubber, butyl rubber, natural rubber, diatomite, a reinforcing agent, a filler, a viscosity regulator, a vulcanizing agent, a stabilizer and other commonly used additives. According to the present invention, the diatomite has a special structure and physical properties, the other raw materials in the formula are reasonably selected, the ratio is appropriate, and the diatomite chloroprene type sealant has characteristics of good anti-aging performance, good weather resistance, strong heat resistance, strong wear resistance, rare sagging, good surface smoothness, environmental protection, and long service life, and can be used for family decoration and other fields.

The invention relates to epoxy potable water tank paint and its preparation method. The paint provided by the invention is mainly composed of a component A and a component B: 1) the component A comprises the following ingredients: by weight, 23-40% of epoxy resin, 2-12% of ethanol, 15-38% of butanone, 0.5-1.2% of fumed silica and 20-60% of pigment and filler; and 2) the component B comprises the following ingredients: by weight, 73-90% of a curing agent for epoxy resin, 2-8% of ethanol and 7-20% of butanone. The preparation method comprises the following steps: mixing epoxy resin, butanone, ethanol, pigment and filler and the auxiliary agents according to the formula ratio, dispersing, carrying out sand milling until the fineness reaches the technical requirement, filtering the obtained mixture and packaging so as to obtain the component A; and packaging the obtained component A and the component B according to the mass ratio.

The present invention relates to a method for preparing artificial rutile. The artificial rutile is prepared by titanium concentrate reduction by hydrochloric acid leaching; and rutile crystal seeds are added in the process of titanium concentrate acid leaching treatment. The method comprises steps of: first, conducting reduction roasting on the titanium concentrate; cooling and carrying out hydrochloric acid leaching; while adding rutile crystal seeds; and carrying out filtration, washing, drying and calcining on the slurry obtained from hydrochloric acid leaching to obtain the artificial rutile. The invention is applicable to preparation of artificial rutile from high calcium magnesium titanium concentrate in Panzhihua. The prepared artificial rutile product has high grade, low fine powder rate and low impurity content, and can better meet the requirements of a boiling chlorination process.

The invention relates to a powder coating compound for coating a thermal sensitive substrate and a coating method. The powder coating compound comprises the following components by weight part: (a) 15-86 weight parts of resin adhesives, (b) 1-26 weight parts of curing agents, (c) 5-40 weight parts of padding mixtures, and (d) 1-13 weight parts of wax additives. The coating method comprises the following steps of: coating the powder coating compound on the surface of the substrate; heating the coated substrate, so as to cause the powder coating compound to be molten and flow under a temperature at 60-120 DEG C; and curing the powder coating compound under the molten state through radiation and / or heat energy. The invention provides the powder coating compound which can be stably stored. A (high) flexibly polymer substrate can be supplied by the powder coating compound and the powder coating compound can flow and can be cured under low temperature, so that the powder coating compound can be coated on the thermal sensitive substrate.

The invention relates to a method for decomplexing a heavy metal ammonia complex in high-concentration ammonia-nitrogen wastewater, which comprises the following steps of: adding an alkaline material into the high-concentration ammonia-nitrogen wastewater containing heavy metals, so that ammonium ions are converted into ammonia molecules and residual hydroxyl ions exist; and by controlling the flow and the pressure of steam input into a stripping tower, controlling the temperature distribution of the stripping tower, so that liquid is kept for a certain retention time in a certain temperature region in the stripping tower, the heavy metal ammonia complex is decomposed and the heavy metal ions are combined with the residual hydroxyl ions in the wastewater to generate precipitates. The method disclosed by the invention has an excellent decomplexing effect on the heavy metal ammonia complex, is simple to operate and has no secondary pollution.

The invention relates to an efficient bio-organic fertilizer and a production process thereof. The bio-organic fertilizer is produced through the following steps of: firstly, fermenting poultry excrements, and then, compounding the fermented poultry excrements and crushed crop wastes and scouring wastes; mixing humic acid, trace elements, mineral substances and sieved materials, and then, pelleting; and finally, drying, cooling and sieving granular materials, and packaging the granular materials into a finished product. According to the invention, various solid wastes can be used as the raw materials, thus, not only is the cost of the raw materials low, but also the waste harmful resource is converted and utilized to protect the environment and bring benefit to the society, and generally, the using amount of the fertilizer can be reduced by 20-30%. The traditional compost way is changed by utilizing a biological agent; the poultry excrements, the crop straw, the scouring wastes and other organic wastes are sufficiently utilized; and through small investment, the fertilizer efficiency is increased, the time is saved, various benefits are brought for use and production, and the quality of the fertilizer is ensured.

The invention relates to a bio-organic fertilizer and a production process thereof. The bio-organic fertilizer is produced through the processes such as fermenting, compounding with humic acid, trace elements and mineral substances, pelleting and the like by taking crop wastes and biological bacteria as raw materials. Active biological bacteria are inoculated on a product provided by the invention, thus, organic solid wastes can be decomposed and deodorized into a high-quality bio-organic fertilizer within short time, and the biological activity of a product and applied soil can be effectively improved. A series of products have the characteristics of wide application range, strong pertinence (specificity), rapidness in absorption, high fertilizer efficiency, strong action, low cost, no pollution and the like.

The invention relates to a method for removing a trace amount of toxic pollutants in water by enzyme-loading magnetic particle reinforced flocculation. The method comprises the following steps that 1, enzyme-loading magnetic particles are used, an enzymatic cross-coupling polymerization reaction is controlled so that a trace amount of toxic pollutants enter into an organic macro-molecule structure by covalent binding, and after the reaction, the hydrophobicity and molecular weight of the organic structure are improved; 2, the enzyme-loading magnetic particles are subjected to magnetic recovery; and 3, the recovered enzyme-loading magnetic particles are added with a flocculating agent, and the pollutants obtained by enzymatic polymerization are easily precipitated and removed by coacervation / flocculation processes such as double electrode layer compression, adsorption electrical neutralization and precipitation net-capturing and thus a trace amount of the toxic pollutants in water are removed by enzyme-loading magnetic particle reinforced flocculation. The method has good selectivity and good treatment effects on low-concentration toxic pollutants, realizes recovery and use of an enzyme, has a low cost and a wide application range and is suitable for treatment on natural water, drinking water and waste water containing low-concentration toxic pollutants.

The invention relates to a microwave processing method for chrysanthemum tea. The method comprises the following steps of: firstly, picking out satisfactory fresh chrysanthemums, and spreading the chrysanthemums at room temperature to air; performing microwave green removing, quickly reducing the temperature after green removing, and repeatedly kneading the chrysanthemums; and drying, screening, inspecting and packing the chrysanthemums to obtain the finished product of chrysanthemum tea. Compared with the traditional common green removing method through heating, distilling and drying, the method can effectively reserve important drugs and nutrition constituents such as volatile oil, flavone, chlorogenic acid, stevia, choline, amino acids, vitamins, abundant mineral elements and the like contained in the chrysanthemums, and the disinfection effect is improved.

The invention relates to oil, especially to an emulsified oil which is suitable for being added into livestock feed and a preparation method thereof. The emulsified oil comprises the following components of: by weight, 40-100 parts of vegetable oil, 0.5-5 parts of span, 1-10 parts of monoglyceride stearate, 1-5 parts of sodium caseinate, 1-10 parts of disodium hydrogen phosphate and 30-90 parts of glucose syrup. The emulsified oil is prepared by technological processes of burdening, homogenization, spray drying and cooling. The emulsified oil provided by the invention has balanced nutrient proportion, is rich in medium / short chain aliphatic acid, high nutritional milk protein, digestible monosaccharide and the like which are all easy for animals to absorb, has high net energy value and high digestion and absorption rate, can greatly increase the content of fat in feed and raise energy density of animal diets, is a powered solid, and is convenient to preserve and transport.

The invention relates to a waterproof coating, in particular to a waterproof coating of a carton, which comprises the following components in weight part: 30-120 parts of paraffin micro-emulsion, 50-90 parts of simethicone, and 4-8 parts of emulsifier. The waterproof coating is prepared according to a method as follows: (1) heating the paraffin micro-emulsion to 50-180 degree C; (2) adding simethicone and stirring for 0.5-3 hours; and (3) adding the emulsifier, stirring at a high speed for 10-40 minutes, and cooling to the room temperature. The waterproof coating of the carton, disclosed by the invention, has no pollution on the human body and the environment, can be combined with the base material firmly, and has excellent waterproof property.

The invention relates to the field of metal anticorrosive paints, particularly relates to a nano modified aqueous epoxy rust-resisting paint and a production method thereof. The nano modified aqueous epoxy rust-resisting paint comprises a component A and a component B, wherein the component A comprises aqueous epoxy emulsion, wetting dispersant, levelling agent, film forming auxiliary agent, antifoaming agent, filling material, anti-flash rust agent, antirust pigment and water and especially nano organic silicon solution, and the component B comprises aqueous cashew nut shell oil modified amine hardener and water. According to the invention, by using the nano inorganic silicon solution to modify the aqueous epoxy rust-resisting paint, compared with unmodified aqueous epoxy rust-resisting paint, the paint film is denser after solidification, and the anlirust property is better; the hardness of the paint film is strengthened, the thixotropy is good, and there is no sagging during facade construction; and compared with the usage of modified polyurethane, alkali swelling and other thickening rheological auxiliary agents, the cost is greatly reduced.

The invention relates to liquid alkyd resin and a preparation method thereof. The liquid alkyd resin comprises the following raw materials: oil, rosin, benzoic acid, polyatomic alcohol, waste, solvent oil and the like. The preparation method comprises the following steps of: adopting recovered waste and old plastic and chemical-fiber industrial waste as main raw materials, adding all auxiliary materials, generating polyesterification reaction in a reaction kettle, then carrying out dilution, and finally carrying out filtering to prepare a finished liquid alkyd resin product. In the invention, the waste plastic is utilized for preparing the liquid alkyd resin, the wastes become valuables, the technical process is simple and is easy to operate, the mode for utilizing heat-conducting oil for heating is safer and more energy-saving, and the application range is wide.

The invention relates to a rubber composition used for anti-fire shoes and a manufacturing method of the rubber composition. The rubber composition comprises a base rubber composed of 90-100 in parts by weight of chloroprene rubber and 0-10 in parts by weight of cis-1, 4-polybutadiene rubber and other complexing agents. The rubber composition is obtained through mixing the components according to the formula amount. According to the invention, through choosing proper base rubber, a flame retardant and other complexing agents, the finally prepared rubber composition used for the anti-fire shoes has the advantages of good wear resistance, oil resistance, acid-base resistance, flame retardancy, insulativity and the like, and increases each indicator of the anti-shoes to a large extent, and has a better protection for the firemen in the harsh environment.

The invention relates to a nanometer magnesium oxide inorganic antibacterial agent, a preparation method and applications of the nanometer magnesium oxide inorganic antibacterial agent. The method comprises the steps of mixing magnesium salt alcoholic solution containing copper ions and oxalic acid alcoholic solution at room temperature, and reacting to obtain precursor gel containing copper ions; ageing, separating and drying the gel, then conducting high-temperature calcination on the gel under air atmosphere to obtain ion-doped nanometer magnesium oxide inorganic antibacterial agent. The diameters of the antibacterial agent particles are controlled to be 5-30nm, the specific surface area is 26.4-258.0m2 / g, the antibacterial rate of the antibacterial agent to representative gram-negative colon bacillus and gram-positive staphylococcus aureus in 24 hours can be more than 99.9%, and along with the increasing of the diameters of the particles, the minimal inhibitory concentration is lower and lower gradually, and the good antibacterial capability can be displayed. The nanometer magnesium oxide inorganic antibacterial agent and the preparation method have the advantages that the antibacterial capability can be controlled by utilizing the doped ions, the requirement on the diameter range of the particles is low, the requirement on the preparation process and equipment can be lowered greatly, raw materials are easy to obtain, the operation is easy, the yield is high, the nanometer magnesium oxide inorganic antibacterial agent is suitable for large-batch preparation.

The invention relates to water-soluble urea-formaldehyde glue and a preparation method thereof as well as a method for improving strength of water-soluble compound fertilizer granule by the water-soluble urea-formaldehyde glue. The water-soluble urea-formaldehyde glue consists of the following raw material components in parts by weight: 600-800 parts of 37wt% formaldehyde water soluble, 250-400 parts of urea, 1-5 parts of melamine, 1-5 parts of phthalic anhydride, 1-5 parts of sodium hydroxide solution and 15-30 parts of starch. The method for improving the strength of the water-soluble compound fertilizer granule by the water-soluble urea-formaldehyde glue comprises the following steps: in a process of preparing the water-soluble compound fertilizer by an aggregating process, after processes of pelleting, drying and sieving and before a cooling process, spraying the water-soluble urea-formaldehyde glue on the surface of the fertilizer granule. The water-soluble urea-formaldehyde glue disclosed by the invention is low in cost and simple in preparation method; and, after implementing a surface treatment on the water-soluble compound fertilizer granule, the strength of the fertilizer granule is remarkably improved to more than 20N under a precondition of guaranteeing a controlled-release effect, so that the water-soluble urea-formaldehyde glue can completely meet the demand of spouted bed coating.

The invention relates to a high-gloss impregnated film adhesive veneer artificial board and a manufacturing process thereof. The veneer artificial board comprises a substrate and an impregnated film adhesive decoration layer and comprises an impregnated film adhesive layer, a substrate and an impregnated film adhesive layer in turn. The manufacturing process avoids secondary pollution, is simple and is easy to operate; and the high-gloss impregnated film adhesive veneer artificial board product is high in dimensional stability and scratch resistance.

The invention relates to a biomass wet detoxification method of hexavalent chromium-contained waste residues. The method comprises the following steps: (1) chromium residues are pulpified to slurry; (2) the pH of the slurry is adjusted to 7.0-10.0; (3) after the slurry is heated, the slurry is added in biomasses for stirring and pulpifying; and (4) the slurry is filtered to obtain the qualified chromium residues with standard content of hexavalent chromium. The chromium residues obtained by the treatment method accord with the leaching toxicity [Cr(VI)] not more than 3 mg / L stated by the chromium residue pollution environmental protection technical specifications (HJ / T301-2007), also accord with the leaching toxicity [Cr(VI)] not more than 2.5 mg / L stated by the hazardous waste landfill pollution control standards (GB18598-2001), and can be embedded as general industrial solid wastes. Raw materials used by the method are easily obtained biomasses with low cost, and are low in detoxification temperature and treatment cost; and the method is simple in flow, is suitable for industrial production, and has better industrial application foreground.

The invention relates to a TPU (thermoplastic polyurethane) film with high hydrolytic stability and a preparation method of the TPU film. The TPU film comprises ingredients in parts by weight as follows: 100 parts of TPU particles, 12-25 parts of epoxy resin, 3-8 parts of polycarbodiimide and 0.3-10 parts of an antioxidant. The TPU film with the high hydrolytic stability is prepared by adding epoxy resin and polycarbodiimide into the TPU particles, so that the hydrolytic stability of a TPU film product is improved, and the mechanical property retention rate is increased to a large extent compared with a conventional product.