48results about How to "Meet friendly request" patented technology

The invention relates to transition metal oxides, in particular to a method for manufacturing a nanoflower film based on a manganese cobalt oxide hierarchy structure. A water heating and high-temperature calcination synthetic method is adopted, a layer of a nanoflower film material composed of nanobands grows in situ on the surface of a foamed nickel sheet at the low temperature through a water heating method, the nanoflower film material is further calcinated, and therefore the metallic oxide film material of the nanoflower structure is obtained. By the adoption of the method, hexamine is used as an externally-added alkali source, the thickness and the size of nanoflowers can be adjusted and controlled, and the metallic hydroxide nanoflower film material is obtained; and through further calcination, the metallic oxide nanoflower film material which is regular in appearance and stable in structure and is of the hierarchy structure are obtained finally. By the adoption of the method, the experiment conditions are gentle and controllable, practicality is high and reproducibility is good.

The invention belongs to the technical field of nano-materials and in particular relates to a preparation method of a Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material. A Bi2Fe4O9 nano-material is obtained by adopting a hydrothermal synthesis method through high-temperature water heat. According to the preparation method provided by the invention, sodium hydroxide is used as an additional alkali source; meanwhile, the mol concentration of the alkali source is adjusted to regulate and control the size and shape of Bi2Fe4O9; finally, the Bi2Fe4O9 nano-rod-shaped or nano-cake-shaped material which has the regular shape and a stable structure is obtained. The method provided by the invention has the advantages of moderate and controllable experiment conditions, strong practicability and good repeatability.

The invention discloses a preparation method of a polydopamine modified molybdenum disulfide composite silver nanoparticle antibacterial agent. The method comprises the steps of: preparing a molybdenum disulfide@polydopamine nanosheet solution; preparing a silver nitrate solution and weighing ammonia water, with the ammonia water and the silver nitrate solution being in a molar ratio of 50-100:1,and the silver nitrate and molybdenum disulfide being in a molar ratio of 1-50:1; preparing a glucose solution, with the glucose and silver nitrate being in a molar ratio of 10:1; adding the solutionprepared in the previous two steps and ammonia water into a wild-mouth bottle, conducting magnetic stirring for 20min-30min, then adding a glucose solution, performing magnetic stirring for 1h-1.5h orcarrying out microwave reaction at 60DEG C for 10min for reduction; cleaning the product with ultrapure water, conducting centrifugal purification, dispersing the final product in ultrapure water, and performing storage in a refrigerator at 4DEG C. The preparation method is simple and efficient, has good reproducibility, is convenient for mass production, and meets the requirements of environmental friendliness. The polydopamine modified molybdenum disulfide composite silver nanoparticle antibacterial agent prepared by the method has the advantages of regular morphology, uniform particle size, homogeneous dispersion, reduced cost and excellent antibacterial effect.

The invention relates to a preparation method and applications of an aqueous reflective radiation type composite heat insulation paint. The aqueous reflective radiation type composite heat insulationpaint is of a double layer paint layer structure composed of a radiation thermal-insulation paint and a reflective thermal-insulation paint; the radiation thermal-insulation paint is sprayed onto a lower layer; the reflective thermal-insulation paint is sprayed onto an upper layer; the high radiation performance of convenience carbon nanotube and the reflective performance of rutile type titaniumdioxide are combined, reflective thermal insulation effect is achieved by the titanium dioxide at the upper layer; the radiation thermal insulation effect is achieved by the carbon nanotube at the bottom layer. Compared with simple blended single-layer structures, the double-layer structure possesses a following advantage: the reflective effect of rutile type titanium dioxide can be ensured effectively. The aqueous reflective radiation type composite heat insulation paint is low in VOC, is friendly to the environment. The aqueous reflective radiation type composite heat insulation paint possesses excellent reflective performance on visible light and near infrared light, is high in hemispherical emissivity, and excellent in thermal insulation effect, is green, and is friendly to the environment; the preparation method is simple and controllable; construction is convenient; and the aqueous reflective radiation type composite heat insulation paint can be applied on building exterior wallsand petroleum chemical storage tanks based on different requirements.

The invention discloses a motherboard coated with a conformal coating. The motherboard is coated and solidified with a conformal coating layer, which comprises the following components by weight: 12-30% of organosilicon modified acrylate resin, 10-30% of polyurethane acrylate resin, 20-40% of a fluorine-containing reactive diluent, 10-20% of a reactive diluent without fluorine, 4-7% of a photoinitiator and 0.1-5.5% of an auxiliary agent. The conformal coating layer provided by the invention improves water resistance, oil resistance and self-cleaning property of the motherboard, and can achieve good antifouling and waterproof effect. The conformal coating has high hardness, scratch resistant performance, high glossiness and good adhesion; and the conformal coating is a solvent-free coating, which has no solvent evaporation during the curing process and meets the environment-friendly requirements in the current market.

The invention relates to a cable tie material and a preparation method thereof, and in particular discloses a degradable cable tie material and a preparation method thereof. The material comprises thefollowing components in parts by weight: 40-60 parts of polylactic acid, 30-50 parts of polyvinyl alcohol, 5-20 parts of aliphatic polyamide, 1-10 parts of polyester, 5-15 parts of toughener, 5-10 parts of filler, 1-10 parts of degradation synergist and 1-3 parts of other additives. The material has the characteristics of high strength, high elongation, excellent high and low temperature performance, etc., and satisfies requirements of normal use of cable ties at high temperature heat resistance to 85 DEG C, and no fracture at low temperature of extreme weathers of Xinjiang, Heilongjiang, etc.; meanwhile, the material has the advantages of natural easy degradation, good biocompatibility and direct degradation or composting treatment after use, is natural and environmentally friendly, is pollution-free, and meets environmental friendliness requirements; and moreover, the material also has good hydrophilicity and anti-static property, and can meet anti-static requirements of wire harness cable ties of electronic industry.

The invention relates to an environment-friendly rust removing and resisting agent applied to acid pickling. The rust removing and resisting agent is prepared from the following raw materials in percentage by mass: 17-35% of phosphorous acid, 1-8% of zinc dihydrogen phosphate, 1-8% of an oxidant, 1-10% of a complexing agent, 0.05-5% of a passivator, 0.01-2% of a surfactant, 0.01-2% of a corrosioninhibitor and the balance of water, wherein the oxidant is selected from one or two of cerous nitrate or zinc nitrate; the passivator is sodium molybdate; the corrosion inhibitor is selected from oneor two of rodine and benzotriazole; the surfactant is selected from JFC (fatty alcohol-polyoxyethylene ether) and OP-10 (alkylphenol polyethylene ether). Through the rust removing and resisting agent,the rust removing and resisting effect can be achieved by carrying out acid pickling under the normal temperature; a good galvanization effect can also be achieved after steel products are placed inthe air for a period of time after removing rust; meanwhile, the rust removing and resisting agent has the advantages of low production cost, simple operation process, no harm to operators and environment friendliness.

The invention relates to a preparation method of a graphene compounded / metal ion doped defective semiconductor photocatalyst, and relates to a preparation method of a photocatalytic functional material. With a ternary sulfide ZnIn2S4 as a reference, Ag<+>, a zinc source, an indium source, a sulfur source and oxidized graphene are subjected to a reaction under a hydrothermal condition according toa certain molar ratio in order to produce the target photocatalyst. The visible light photocatalyst is definite in structure and composition, and the visible light spectral response range of ZnIn2S4 can be obviously enhanced through doping of Ag <+>; after the graphene is compounded with the graphene, the diffusion range of photon-generated carriers can be increased, so that recombination of photo-generated electron-hole pairs is inhibited, and the visible light catalytic activity is enhanced. The product is a promising visible light photocatalytic material.

The invention provides a method for preparing a graphene / carbon nanotube / carbon nanofiber membrane ternary composite capacitive demineralization electrode. The method comprises the steps of adding polyacrylonitrile into a well-dispersed graphene oxide and carbon nanotube N,N-dimethylformamide solution, carrying out stirring at a certain temperature so as to prepare a spinning solution, then, preparing a composite film by using an electrostatic spinning technology, and carrying out high-temperature annealing and carbon dioxide activating, so as to obtain a graphene / carbon nanotube / carbon nanofiber membrane ternary composite film. The film obtained by the method can be directly used as the capacitive demineralization electrode. The method provided by the invention is simple, a binder is not required, the prepared electrode material has a flexible characteristic, the assembly is facilitated, and the requirements on environment-friendliness are met; the prepared ternary composite material has a unique microstructure and good electric conductivity, the demineralization performance can be effectively improved, and thus, the ternary composite material has a potential development prospect.

The invention relates to a preparing method for glyphosate and belongs to the technical field of chemical engineering. The preparing method specifically comprises the four steps of synthesis of iminodiacetic acid, preparation of pmida, preparation of glyphosate and solid and liquid separation. According to the preparing method, firstly, precious metal silver is loaded on titanium dioxide, the surface nature of titanium dioxide is influenced, electron distribution is changed, and catalytic activity is improved; then, titanium dioxide loaded with silver is loaded into activated carbon and irradiated with an ultraviolet source. The selectivity of glyphosate is greatly improved, the oxidization process of pmida is greatly shortened, the yield of glyphosate is increased to 96.3%, and the product purity can reach 97.6%; besides, the content of methyl aldehyde is low, fewer products are generated, and the requirement of the nation for environment friendliness is met.

The invention relates to an electrochemical aptamer sensor for detecting atrazine, and preparation and detection methods for the sensor, and overcomes the defects that an existing atrazine detection method is complex and high in cost, needs professional operators and the like. According to the electrochemical aptamer sensor, reduced graphene oxide is modified on the surface of a glassy carbon electrode to serve as a substrate electrode material, and nickel-iron cyanide complex nanoparticles are deposited on the surface of the electrode through an electrochemical deposition technology to serveas a signal probe; and gold nanoparticles are deposited on the surface of the electrode through electrochemical deposition, and an atrazine aptamer is fixed on the surface of the electrode through anAu-S key. The atrazine can be subjected to high-sensitivity analysis, and high selectivity can be obtained in a complex environment medium; the sensor has the advantages of being simple in instrumentequipment, low in analysis cost, fast in response and the like; and a new detection method can be provided for evaluating the residual components of the atrazine as a pesticide in the environment.

The invention discloses a silver ion doped zinc thioindate heterojunction photocatalyst preparation method, and relates to a catalyst preparation method, which comprises: carrying out a reaction on silver nitrate, zinc acetate, indium acetate, thioacetamide and indium oxide according to a certain ratio under an oil bath heating condition to obtain a target photocatalyst. According to the invention, the novel visible light photocatalyst is clear in structure and definite in composition; by doping with Ag<+>, the photon utilization rate of ZnIn2S4 can be remarkably increased; by compounding withIn2O3, the diffusion range of photon-generated carriers can be enlarged, the electron-hole pair is effectively separated, the recombination of photo-induced electron-hole pairs is inhibited, and theutilization rate of photo-induced electrons is greatly increased, so that the catalytic activity of visible light is enhanced; and the Ag:ZnIn2S4 / In2O3 composite material has high visible light activity, good hydrogen production capacity and good photocatalytic stability, so that the Ag:ZnIn2S4 / In2O3 composite material has wide prospect in the field of clean energy production and energy conversion, and is a catalyst with good development prospect.

The invention relates to the new process for producing lemery by a one-step method of reaction-extraction-crystallization, which takes dilute sulphuric acid and potassium chloride as the raw material and adopts the one-step reaction of a complex extracting agent to extract and crystallize to prepare the lemery under normal temperature; the three processes of reaction, extraction and crystallization are simultaneously carried out in a same device, and the solid lemery can be obtained without heating and compression. The used extracting agent can be effectively recovered by the back extraction of ammonia so as to be reused. The whole process is a closed cycle, which ensures zero discharge of three wastes.

The invention discloses a bi-dihydroxy ethylene urea, a plurality of derivatives thereof, a preparation method and an application thereof. The molecular structure of the compound comprises a plurality of hyperactive hydroxies which can perform dehydration and condensation cross-linking reaction with a plurality of polymers containing active hydrogen therein, thereby replacing traditional urea / formaldehyde resin, melamine / formaldehyde resin, dicyandiamide / formaldehyde resin, bird dropping amine / formaldehyde resin and the like containing nitrogen hydroxymethyl or nitrogen hydroxymethyl ether active functional groups therein. The bi-dihydroxy ethylene urea can be widely used as thermosetting crosslinking agent of various polymer resin coatings (such as acrylate resin, alkyd resin, polyurethane resin, phenolic resin and the like) containing active hydrogen, and used as anti-wrinkle finishing agent and waterproof finishing agent of cotton, flax, silk and other natural textile fibers. In the cross-linking curing use process, the invention only releases water rather than any harmful micromolecular compounds such as formaldehyde, methanol and the like, thus the invention belongs to a new environment-friendly species of chemical cross-linking agent.

The invention belongs to the technical field of agriculture, and relates to a novel environment-friendly medical fertilizer which comprises the following components in parts by weight: 50-80 parts of a macroelement fertilizer, 0.1-5 parts of a medium trace element fertilizer, 1-10 parts of monosultap, 0.1-5 parts of chlorantraniliprole and 10-20 parts of a kaolin natural polymer slow-release adhesive. The preparation method comprises the following steps: respectively crushing a macroelement fertilizer, a medium trace element fertilizer, monosultap and chlorantraniliprole according to set weight parts, and preparing a kaolin protein composite slow-release adhesive according to set weight parts; the fourth slow-release layer, the third slow-release layer, the second slow-release layer and the first slow-release layer are sequentially wrapped and dried to prepare a pesticide fertilizer finished product. The invention further provides application of the novel environment-friendly pesticide fertilizer in rice pest control. The kaolin natural polymer slow-release adhesive is used as the adhesive, so that the action time of the medical fertilizer can be prolonged, the utilization rate of the medical fertilizer is increased, and degradable natural components are adopted, so that the requirement of environmental friendliness is met.

The invention discloses a fibrous composite material and a preparation method thereof. The fibrous composite material is a three-dimensional multi-layer fabric which comprises an upper surface layer and a lower surface layer, wherein a middle layer formed by the connection of middle separating yarns is arranged between the upper surface layer and the lower surface layer and is filled with nanofiber. The preparation method comprises the step of filling the middle layer of the three-dimensional multi-layer fabric with nanofiber by virtue of an electrostatic spinning method or a biological method, so as to form the fibrous composite material. The fibrous composite material has strong force, is capable of resisting external tensile force and bearing a certain compression performance and has very good elastic return action, the structure is relatively strong, and the bonding is relatively firm. Furthermore, the nano-level fibrous composite material has relatively high porosity and high in filter efficiency. The preparation method is low in cost and and suitable for industrial production. The fibrous composite material can be further taken as a filling material and has a protection enhancing effect.

The invention discloses an antibacterial waterborne aluminum pigment and a preparation method thereof. The preparation method includes: A, washing the surface of aluminum powder, forming a passivatedwater-resistant layer on the surface of the aluminum powder, and forming an antibacterial layer on the surface of the aluminum powder; alternatively B, washing the surface of aluminum powder, and forming both a passivated water-resistant layer and an antibacterial layer on the surface of the aluminum powder. The preparation method specifically includes: (1) washing the surface of aluminum powder with organic solvent diluted phosphoric acid; (2) forming a passivated water-resistant layer on the surface of the aluminum powder through an inorganic salt or tetraethoxysilane; (3) forming an antibacterial layer through a quaternary ammonium salt silane coupling agent. The quaternary ammonium salt silane coupling agent utilized herein subjects the aluminum pigment to further covering modificationthrough hydrolysis; the quaternary ammonium salt terminal having antibacterial effect has good hydrophilicity; a carbon chain of suitable length enables the modified aluminum powder to be well compatible with water and gain certain water resistance; the waterborne aluminum pigment herein has good antibacterial property and water resistance.

The invention belongs to the technical field of nanometer materials, and concretely relates to a preparation method of a zinc stannate nanocube or a nanosheet material. The invention adopts a higher-temperature hydrothermal synthesis method so as to directly obtain a metal oxide material with the nanocube or a nanosheet structure. The preparation method comprises the steps of adopting sodium dodecyl benzene sulfonate as an external acidifying source, adopting tetraethylammonium hydroxide as an external alkalifying source, adjusting different hydrothermal times to adjust the size of the cube, adjusting the dosage of the sodium dodecyl benzene sulfonate to optimize the shape of the material, and finally obtaining the metallic oxide hierarchical-structure nanometer material with a regular shape and a stable structure. The method provided by the invention is mild and controllable in experiment conditions, high in practicability, and good in reproducibility.

The invention belongs to the technical field of preparation of metal oxide composite materials, relates to the preparation of a foamed-nickel-based composite material, and particularly relates to a foamed-nickel-based ZnCo2O4 / ZnWO4 composite material synthesized according to a hydrothermal method and an application thereof. The process comprises the steps of dissolving zinc nitrate hexahydrate, cobalt nitrate hexahydrate, ammonium fluoride and urea, immersing foamed nickel into the solution, performing a hydrothermal reaction for 4-6h at a temperature of 110-130 DEG C, and calcining to obtainZnCo2O4 loaded on the foamed nickel; and then placing the foamed nickel loaded with ZnCo2O4 into a mixed solution of zinc nitrate hexahydrate, sodium tungstate dihydrate and ammonium fluoride, performing the hydrothermal reaction for 5-7h at a temperature of 160-200 DEG C, and calcining to obtain a ZnCo2O4 / ZnWO4 composite material loaded on the foamed nickel. The foamed-nickel-based ZnCo2O4 / ZnWO4composite material is simple in process, good in repeatability, the raw materials are low in price and low in toxicity, and the production cycle is short, so that the energy consumption and cost are reduced, and the large-scale production is facilitated. The prepared composite material shows excellent electrochemical performance and has high energy density and power density. The prepared foamed-nickel-based ZnCo2O4 / ZnWO4 composite material is utilized to prepare an asymmetric supercapacitor which can still keep a specific capacity of 98.5% after being charged and discharged for 5000 times, thereby conforming the requirement of being environment-friendly.

The invention discloses a quinoline derivative, a synthesis method of the derivative and a catalyst for synthesis, and belongs to the technical field of organic chemical synthesis. The molar ratio of 2-chloro-3-quinoline formaldehyde and beta-dione in synthesis reaction is 1:1, the molar amount of an acidic ionic liquid catalyst is 6-12% of the used 2-chloro-3-quinoline formaldehyde, the volume amount of a reaction solvent methanol aqueous solution in ml is 7-10 times of the molar amount of the 2-chloro-3-quinoline formaldehyde in mmol, the reflux reaction time is 7-15 min, cooling is performed to room temperature after the reaction is finished, suction filtration is performed, and the filter residues are washed with methanol and vacuum-dried to obtain the quinoline derivative. Compared with synthetic methods using other catalysts, the method has low use amount of the catalyst, reusability without treatment, high raw material utilization rate, simple and convenient operation of the whole synthesis process and the like, and is advantageous for large-scale industrial application.

The invention relates to a preparation method and applications of an aqueous reflective radiation type composite heat insulation paint. The aqueous reflective radiation type composite heat insulationpaint is of a double layer paint layer structure composed of a radiation thermal-insulation paint and a reflective thermal-insulation paint; the radiation thermal-insulation paint is sprayed onto a lower layer; the reflective thermal-insulation paint is sprayed onto an upper layer; the high radiation performance of convenience carbon nanotube and the reflective performance of rutile type titaniumdioxide are combined, reflective thermal insulation effect is achieved by the titanium dioxide at the upper layer; the radiation thermal insulation effect is achieved by the carbon nanotube at the bottom layer. Compared with simple blended single-layer structures, the double-layer structure possesses a following advantage: the reflective effect of rutile type titanium dioxide can be ensured effectively. The aqueous reflective radiation type composite heat insulation paint is low in VOC, is friendly to the environment. The aqueous reflective radiation type composite heat insulation paint possesses excellent reflective performance on visible light and near infrared light, is high in hemispherical emissivity, and excellent in thermal insulation effect, is green, and is friendly to the environment; the preparation method is simple and controllable; construction is convenient; and the aqueous reflective radiation type composite heat insulation paint can be applied on building exterior wallsand petroleum chemical storage tanks based on different requirements.

The invention belongs to the technical field of photocatalysts and particularly relates to nonmetal co-doped thorn-shaped inlaid TiO2 hollow structures as well as a preparation method and an application thereof. A titanium source, alcohol and a nonmetal element dopant are added to a self-made ultrasonic integrated device, the solution is dispersed into uniform mist by an ultrasonic sprayer, the mist is slowly conveyed to an ultrasonic reactor to react under the action of inert gas, then, the mists passes through a microwave dryer, the nonmetal co-doped thorn-shaped inlaid TiO2 hollow structures, including thorn-shaped hollow spheres, thorn-shaped hollow boxes and symbiotic structures of thorn-shaped hollow spheres and hollow boxes, can be obtained by controlling the amount of alcohol and conditions of a reaction device, and these nonmetal co-doped thorn-shaped inlaid TiO2 hollow structure photocatalysts have better catalytic effects on degradation of organic pollutants and organic oxidation reactions.

The invention provides graphene waterborne super-wear-resisting floor paint and a preparation method thereof. The floor paint is prepared from the following components in parts by weight: 60 to 75 parts of polyurethane resin, 8 to 11 parts of modified graphene, 7 to 11 parts of hydroxyethyl cellulose, 15 to 20 parts of dimethylaminoethyl acrylate, 5 to 9 parts of nano zinc oxide, 9 to 17 parts ofnano silicon dioxide, 15 to 26 parts of curing agent, 0.5 to 1.5 part of dispersant, 0.9 to 1.8 parts of flatting agent, 0.4 to 0.8 part of de-foaming agent, 3 to 5 parts of active diluting agent, 30to 60 parts of pigment and filler and 15 to 30 parts of water. According to the graphene waterborne super-wear-resisting floor paint provided by the invention, the wear-resisting performance and mechanical performance of a coating paint film are enhanced; a preparation technology is simple and a prepared product meets the environment-friendly requirements; the graphene waterborne super-wear-resisting floor paint is safe and environmentally friendly and has a wide applicable range.

The invention provides a conformal coating for protection of a printed circuit board, and a preparation method and a usage method thereof. The conformal coating comprises the following components by weight: 12-30% of organosilicon modified acrylate resin, 10-30% of polyurethane acrylate resin, 20-40% of a fluorine-containing reactive diluent, 10-20% of a fluoride-free reactive diluent, 4-7% of a photoinitiator and 0.1-5.5% of an assistant. The paint film formed by the conformal coating provided by the invention has good water resistance, oil resistance, self-cleaning performance, scratch resistant performance, high glossiness and good adhesion.

The invention belongs to the field of nanomaterial synthesis, in particular to a mesoporous CoCO 3 / g‑C 3 N 4 Methods for the preparation of composite materials. The present invention utilizes a one-step hydrothermal method in CoCO 3 Surface modification of hexahedral nanomaterials g‑C 3 N 4 Construction of 3D / 2D Structured Mesoporous CoCO 3 / g‑C 3 N 4 Composite material, mesoporous CoCO 3 Hexahedral nanomaterial pair g‑C 3 N 4 The modification significantly improves the separation effect of the photogenerated charge carriers in the composite material, which significantly enhances the light-harvesting ability of the composite material and reduces the monomer g‑C 3 N 4 bandgap width, exhibits excellent photocatalytic hydrogen production performance under visible light conditions; the present invention uses CoCO 3 3D materials on monomer g‑C 3 N 4 The surface is modified, the manufacturing process is simple, the controllability is strong, the mass production is convenient, the energy consumption is reduced, the material is easy to obtain, the cost is low, and there is no pollution, which meets the requirements of environmental friendliness. Open up a new way for the sustainable development of energy.

Preparation of Nano-MoS by Polymerization of Dopamine 2 ‑Al 2 O 3 The method for composite rolling lubricant belongs to the technical field of lubrication. The self-polymerization of dopamine into polydopamine is used to modify the surface of molybdenum disulfide nanosheets to obtain polydopamine-modified molybdenum disulfide nanosheets; then aluminum chloride hexahydrate, poly Ethylene glycol 200, sodium acetate, the resulting solution was centrifuged, washed and dried to obtain nano-MoS 2 ‑Al 2 O 3 Composite powder; finally, disperse the prepared composite nano powder into deionized water, add glycerol, triethanolamine, sodium hexametaphosphate, sodium dodecylbenzenesulfonate, aqueous borate ester and trace defoamer, namely The desired compound rolling lubricant can be obtained. The preparation process of the invention is simple, the reproducibility is good, the cost is low and the efficiency is high, and it is beneficial to mass production, and can replace the traditional rolling lubricating oil which pollutes the environment more seriously to a certain extent, and is used for process lubrication in the hot rolling process of plate and strip steel , to promote energy saving and emission reduction and environmental protection production in the strip rolling process.

The invention belongs to synthesis and an application of water-soluble dibasic acid ester, relating to the technical field of organic chemical synthesis methods, overcoming the defect that the traditional lubricating agent such as polyethylene glycol can not meet high load processing requirement and has no rust-proof function. Polyethylene glycol and long carbon chain binary acid are subjected to esterification under the action of a catalyst, a reaction mol ratio of the polyethylene glycol to the long carbon chain binary acid is 2.0-2.5, addition amount of the catalyst is 0.2-0.6%, reaction temperature is 110-130 DEG C, reaction is carried out for 4-6 hours at normal pressure, the polyethylene glycol is esterified, and carbon chain length of a lubricating material is increased, thus lubricating property of the synthesized ester is far better than that of the original polyethylene glycol; and meanwhile, reaction conditions can be controlled, thus the synthesized ester is monoester mainly, the synthesized monoester or diester is biodegradable and meets the requirement of being environmentally-friendly, and the synthesized ester has better lubricating property compared with the original polyethylene glycol and also has a certain rust-proof function.

The invention discloses a preparation method of a nano zirconia precursor. The preparation method is characterized in that: in the presence of ammonia, in an organic solvent, reacting zirconium tetrachloride with an alkoxy donor to obtain a tetra-alkoxy zirconium solution, and refining by decolouring, distillation,filtration and the like to obtain finished tetra-alkoxy zirconium; and thus obtaining nano zirconia by hydrolysis of the tetra-alkoxy zirconium. The preparation method is reasonable in process, safe in operation and free of waste emissions, and meets the environment friendly requirements.