46results about How to "Good dispersion and stability" patented technology

A process for preparing Ag nanoparticles and Au nanoparticles by plant reducing method includes such steps as proportionally mixing the dried powder of camphor tree's leaf with the solution of silver nitrate (or chlorauric acid), and reacting at 15-60 deg.C to obtain Ag (or Au) nanoparticles.

The invention discloses a nano zinc oxide-doped powder and a preparation method thereof. Silicon-aluminum co-doped nano zinc oxide powder is synthesized by using a co-precipitation and calcining one-step method; and the mol ratio of aluminum as a doping element to zinc oxide and the mol ratio of silicon as a doping element to the zinc oxide are (0.03:1)-(0.18:1) respectively. The nano zinc oxide-doped powder disclosed by the invention has the advantages that the whiteness of nano zinc oxide and the light transmittance in a visible light band are improved; the photocatalytic activity of the nano zinc oxide, the dissolving of zinc ions and the particle size increase of the zinc oxide particles in the roasting process are inhibited; and the dispersibility of the nano zinc oxide in water is improved; and the preparation method has the advantages of convenience in operation, simple requirement on equipment, short process flow, low cost and suitability for large-scale industrial production.

The invention relates to a microemulsion composite of polyethylene wax oxide, comprising 5 to 40% of polyethylene wax oxide in weight, 2 to 20% of nonionic surfactant in weight, 0.1 to 5% of cation surfactant in weight, 0 to 5% of assistant emulsifier in weight and 40 to 92% of water in weight based on the total weight of the microemulsion composite of polyethylene wax oxide. The microemulsion composite of polyethylene wax oxide of the invention has transparent appearance, good dispersibility and stability, and better acid resistance and applicability compared with the conventional microemulsion of polyethylene wax oxide. The microemulsion composite of polyethylene wax oxide of the invention can effectively enhance the sewing smoothness of the knit fabric.

The invention discloses phosphorylcholine structure-modified graphene oxide and a preparation method thereof. The phosphorylcholine structure-modified graphene oxide is formed by connecting at least one oligomer containing a phosphorylcholine structure to a graphene oxide slice by a chemical grafting mode. The phosphorylcholine structure-modified graphene oxide is chemically grafted with the hydrophilic phosphorylcholine structure, so that the phosphorylcholine structure-modified graphene oxide is high in dispersibility and stable in water, saline and cell culture fluid, and can be placed at room temperature for a long term and does not have precipitate. The phosphorylcholine structure is an inherent compound such as a part of phospholipid in an organism, so that the phosphorylcholine structure-modified graphene oxide possibly has biocompatibility and is possibly applied to the biomedical field. The preparation method for the phosphorylcholine structure modified graphene oxide is simple, convenient and reliable and is easy to implement.

The invention relates to compound vitamin nanoemulsion belonging to the technical field of pharmacy. Every 1000 ml of nanoemulsion is prepared by the method comprising the following steps of: fully mixing 35-50g of AEO-9 or AEO-4, 150-200g of tween-80, 16-22g of phenylcarbinol and fat-soluble active ingredients at 30-60 DEG C to prepare an oil phase; adding water to dilute the oil phase; adding water-soluble active ingredients; evenly mixing; adding water to dilute and confirm solution contents and adding water to dilute to a volume, wherein the fat-soluble active ingredients comprise 6-18 million IU of vitamin A, 1.8-4.8 million IU of vitamin D3 and 2.5-7.5g of vitamin E, and the water-soluble active ingredients comprise 1-4g of vitamin B1, 0.2-1.0g of vitamin B2, 1.6-4.2g of vitamin B6, 5-25g of barberry extractive and 30-60g of amino acid. The product is clear and transparent, has good stability, slow-release effect, persistent drug effect, great specific surface area of nanoemulsion particles and good system compatibility, can obviously improve the drug absorption rate and the bioavailability and can be compounded with various useful elements besides vitamins.

The invention discloses a preparation method of a graphene powder material. The preparation method comprises the following steps of (1) adding graphite oxide into an organic alkaline solution, and carrying out ultrasonic dispersion to obtain a graphene dispersing solution; (2) adding an organic borohydride into the graphene dispersing solution obtained in the step (1), carrying out solid-liquid separation after stirring, and drying to obtain the graphene powder material. The graphene powder material prepared by using the preparation method of the graphene powder material, disclosed by the invention, has favorable dispersibility and stability in polar solvents such as water, methanol, ethanol, dimethyl formamide and the like, the concentration of the dispersing solution can be up to 2-5mg / ml, and no sediments are generated after the graphene powder material is stored for 4-6 months; the graphene powder material contains few impurities and has potential application values in the fields such as materials, energy, biological sensing, electronics, electrochemistry, solar cells and the like; the preparation method disclosed by the invention has the advantages of mild reaction condition, simple process, short period, low graphene impurity content, high efficiency, economy, environment friendliness and the like, and is easy to realize large-scale production.

The invention discloses a method used for preparing a composite material of carbon nano-tube and phosphorylcholine base polymer used in blood environment. The method leads the surface of the carbon nano-tube to have a specified evocating group after treatment, and then atom is used for transferring radical polymerization to cause 2-(methyl) propylene acyloxy ethyl choline phosphate monomer polymerization, which obtains grafting 2-(methyl) propylene acyloxy ethyl choline phosphate carbon nano-tube. The method is simple and easy and has strong controllability, and the obtained carbon nano-tube protected by the phosphorylcholine polymer has good dissolubility, stability and high biocompatibility in water physiological environment. As nano-biomaterials, the carbon nano-tube protected by the phosphorylcholine polymer provided by the invention has considerable application prospect in the field of drug delivery, gene transmission, molecular diagnosis and detection, separation of biomolecules, and biosensor, etc.

The invention provides a synthetic method of copper nano-particles of different shapes. The method comprises the following steps: selecting one of copper salt compound cupric sulfate, copper chloride dihydrate and copper nitrate, using L-ascorbic acid as a reducing agent, dropwise dripping L-ascorbic acid solutions of different concentrations in a copper salt compound water solution, controlling the temperature, continuously stirring to obtain the copper nano-particles of different shapes, and realizing the control to the shapes of the copper nano-particles by changing the concentration of the L-ascorbic acid added in the system. The method has the characteristics of few raw material kinds, simple and convenient operation method, simple process, environmental protection and the like, and can control the shapes of the copper nano-particles directionally, and the obtained copper nano-particles are good in dispersivity and stable, and do not settle for a long time in the system.

The invention discloses a broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology and a preparation method thereof, and the method particularly comprises the following steps: dispersing nanometer silver powder into a nonpolar or weak-polar solvent, adding polypropylene slices and dissolving the slices; removing the solvent by heating reflux, drying and grinding into powder, and finally performing screw extrusion to obtain the broad-spectrum high-efficiency antibacterial masterbatch based on nano-cluster technology. The antibacterial masterbatch produced by the method has excellent dispersibility, and good stability; the production process is simple; the solvent is recyclable, green and environment-friendly; the product has the excellent performance of strong versatility, lasting antibacterial activity, and reprocessability, and has wide applicability.

The invention belongs to the technical field of environmental chemistry, and particularly relates to a clay mineral loaded nanometer zero valent iron, and a preparation method and use thereof. According to the clay mineral loaded nanometer zero valent iron, and the preparation method and the use thereof, tobacco stems and walnut green seedcases are used for preparing plant extracts, high toxicityand expensive sodium borohydride is replaced as reducing agents, and the clay mineral loaded nanometer zero valent iron is prepared; at the same time, the fact that the clay mineral loaded nanometer zero valent iron can effectively remove residues of anabasin pesticides in water is found for the first time, and the degradation effect is better than that of clay mineral, nanometer zero valent ironand clay mineral loaded nanometer zero valent iron prepared by conventional methods; and degradation conditions of the anabasin pesticides on the clay minerals loaded nanometer zero valent iron are optimized. According to the clay mineral loaded nanometer zero valent iron, and the preparation method and the use thereof, preparation conditions and the degradation conditions of the clay mineral loaded nanometer zero valent iron are optimized, great significance to diversified utilization of agricultural production wastes, reduction of production costs and reduction of environmental pollution areprovided; and at the same time, the reaction process is simple, and good market prospects in remediation and treatment of anabasine pesticide pollution environments are provided.

The invention discloses clethodim aromatic-free missible oil and a preparation method thereof. The clethodim aromatic-free missible oil is prepared from, by weight, 12%-30% of clethodim, 5%-20% of emulsifier and the balance methyl oleate. According to the clethodim aromatic-free missible oil and the preparation method thereof, methyl oleate is mixed with the emulsifier, the clethodim raw material can be well dissolved, and the obtained missible oil has better stability and dispersity; the methyl oleate is adopted to replace benzene solvent in the missible oil, the usage amount of solvent such as benzene, methylbenzene and xylene in the missible oil is reduced, and damage of the benzene solvent to the environment and human health is reduced; the methyl oleate is wide in source and low in cost, and therefore the cost of the missible oil is reduced.

The invention provides an ultra-dispersed photocatalyst which is prepared from 90-110 parts of an alcohol solvent, 2-6 parts of titanium dioxide and 10-14 parts of a dispersing agent. The ultra-dispersed photocatalyst is a semi-transparent solution, the primary particle size of titanium dioxide is 10-50 nm, the secondary particle size of titanium dioxide is 100 nm, and the ultra-dispersed photocatalyst is safe, free of toxin and remarkable in catalytic effect. The ultra-dispersed photocatalyst mainly has the advantages that firstly, a photocatalysis response in the ultraviolet and visible light full-spectrum range is achieved; secondly, the photocatalyst is suitable for combustion catalysis of fuel; thirdly, the photocatalyst can remarkably reduce emission and is safe and environmentally friendly. A preparation method of the ultra-dispersed photocatalyst has the advantages that high dispersing of nano titanium dioxide in the alcohol solvent is achieved; part of titanium ion self-doping features are obtained, the forbidden band width is reduced, and the photocatalysis response in the ultraviolet and visible light full-spectrum range is achieved; cost is reduced. Application of the ultra-dispersed photocatalyst is not limited to indoor environment pollution, sterilization and deodorizing, and the ultra-dispersed photocatalyst can be directly applied to combustion catalysis of fuel, particularly combustion catalysis of fuel of automobile internal-combustion engines.

The invention discloses a self-cleaning nano material with high weather fastness and a preparation method thereof, and belongs to the technical field of coating. The nano material comprises, by weight, 29-65% of vinyl ester unsaturated polyester resin, 5-35% of nano silicon nitride, 3-33% of nano aluminum nitride, 2-32% of nano titanium dioxide, 6-34% of nano zinc phosphate, 1-19% of nano active calcium carbonate, 1.5-18% of nano wollastonite, 0.6-19% nano precipitated calcium carbonate and 1-18% of nano aluminum silicate. The vinyl ester unsaturated polyester resin is uniformly dispersed in proportion to other components, then an additive is added, and the mixture is uniformly stirred and dispersed and is qualified in detection. The nano material has better hydrophobicity, thereby effectively improving dust adhesion resistance of the coating film, improving stain resistance and self-cleaning ability of the coating film, and allowing the coating film to have good self-cleaning performance and high weather fastness.

The invention relates to temperature-responsive supramolecular branched carbon nanotubes and a preparation method thereof. Under the p-p conjugation action of the perylene in branched perylene imide derivatives and the carbon nanotube surface, the branched alcoxyl ether is adsorbed to the carbon nanotube surface, thereby enhancing the dispersity of the carbon nanotubes in water; and the accumulation and dispersion of the branched carbon nanotubes in water can be adjusted by temperature. The supramolecular branched carbon nanotubes have favorable dispersity and stability in water, and the branched perylene imide derivatives with higher hypercomplex system can further enhance the dispersity of the carbon nanotubes in water. The accumulation and dispersion of the branched carbon nanotubes in water can be adjusted by temperature. The method effectively overcomes the defect of high accumulation tendency of carbon nanotubes in water, effectively enhances the uniform dispersion of the carbon nanotubes in water, endows the carbon nanotubes with temperature responsiveness, and widens the application range of the carbon nanotubes in the fields of biomedicine, materials, energy and the like.

The invention provides a method for preparing calcium carbonate / octacalcium phosphate particles containing ibuprofen and belongs to the technical fields of new materials and pharmaceutical preparations. The method comprises the following steps: preparing an alcohol solution of calcium chloride dihydrate, then placing the alcohol solution into a drier holding both ammonium bicarbonate and silica gel, reacting for three days, then centrifuging, washing and drying to manufacture calcium carbonate particles containing ibuprofen, adding citric acid, calcium nitrate, diammonium phosphate and ibuprofen into a solution containing both water and ethyl alcohol, adjusting the pH value of the solution to 9, after that, adding polyethyleneglycol, adding the calcium carbonate particles containing ibuprofen after resolution of polyethyleneglycol, reacting for 3 hours, and finally centrifuging, washing and drying to obtain the calcium carbonate / octacalcium phosphate particles containing ibuprofen. The method is simple in process and low in cost and can be used for mass production. Ibuprofen is released from the particles to reflect the continuous slow release behavior, and the particles are excellent in biocompatibility and easy to degrade.

The invention relates to a high viscosity asphalt composition for water discharge type pavements, as well as the process for preparation, wherein the asphalt composition comprises (by weight portions) asphalt 100, SBS 3-12, and petroleum resin 5-40, sulfur 0.05-1. According to the invention, high viscosity, good dispersity and stability can be achieved, the PG classification can reach 82-28. The obtained high-performance modified asphalt can be used for both the general water seeping pavements, and specific sites such as bridge pavement and stress absorption layer.

The invention provides a preparation method and applications of a nitrogen-doped copper-palladium bimetal nanometer catalytic material (N-Cu-Pd@OMC). The specific steps comprise: sequentially adding an organic ligands triethylenediamine and terephthalic acid to main active elements copper and palladium, and preparing a copper-palladium metal organic framework (N-Cu-PdMOFs) by using a hydrothermalself-assembly method; mixing MOFs and mesoporous carbon (OMC), and carrying out a hydrothermal reaction to obtain a powder material; and placing the powder material in a tubular furnace, and calciningto obtain a nanometer catalytic material. According to the present invention, the copper-palladium nanoparticles (3-9 nm) in the catalytic material are confined in the mesoporous channels of OMC, such that the active component has good dispersion property and good stability; the working electrode prepared from the nanometer catalytic material shows good denitrification performance in the environmental field, the nitrate removal rate can reach 74-91%, and the nitrogen selectivity is 81-94%; and the product is an efficient nanometer catalyst having application prospects and suitable for large-scale industrialization.

The invention discloses a polydopamine ball anchored Pd nanoparticle catalyst. Unsaturated nitrogen-containing functional group coordination bonds are formed by regulating the polymerization reaction time of DA, the interaction between a carrier and active center Pd nanoparticles is enhanced, and rich chemical groups on the surface of polydopamine provide stable adsorption sites for Pd. Polymerization of polydopamine and loading of Pd are carried out in one process, so that more sites are found in the dynamic deposition process of Pd nanoparticles, better dispersity and stability are achieved, the catalytic performance of the catalyst is improved, the stability of the catalyst is enhanced, a large number of nitrogen-containing and oxygen-containing functional groups in the synthesized catalyst and Pd form stable coordination bonds, and thus the loss and agglomeration of Pd nanoparticles are effectively inhibited, so that the cost of the catalyst is reduced, the problems of poor stability, low reaction activity and complex preparation process of the traditional catalyst in the Heck reaction are mainly solved, the catalyst is synthesized by a one-pot method, the preparation process is simplified, and the preparation cost is reduced.

The invention relates to the decoration of building exterior walls, and particularly relates to a decorative layer of a yellow high-strength concrete decorative hanging plate. According to the scheme, the decorative layer is prepared from the following raw materials in parts by weight: 400-800 parts of cement, 720-900 parts of sand with particle size of 10-40 meshes, 180-260 parts of sand with particle size of 70-140 meshes, 100-250 parts of sand with particle size of 325 meshes, 40-120 parts of water reducer, 120-160 parts of water, and 0-4 parts of iron yellow pigment. On the basis of the prior art, the hanging plate can be closely connected with a structural layer of the exterior wall hanging plate by adopting a manner of matching cement base stock with multilevel specific sand, so that the connection strength can be greatly enhanced, and stripping can be avoided.

The invention relates to a lubricant additive containing nano ferrous sulphide granules. The lubricant additive is composed of 1-20wt% of nano ferrous sulphide granules and 80-99wt% of basic lubricating oil, and granularity of nano ferrous sulphide is 10-50nm. The lubricant additive can serve as additives of multifunctional lubricating oil and lubricating grease and also can serve as a repairing antiwear agent for a lubricating system of large-scale mechanical equipment used for various vehicles, ships, petrochemical engineering and mines.

The invention discloses an anti-shrink velvet fiber capable of preventing dust absorption. A chitosan fiber is creatively blended with a soybean fiber, Australia cashmere and the like, so that chitosan is uniformly distributed, is difficult to fall and can permeate into a cell body to be adsorbed so as to disorder the normal physiological activity of a cell and thus kill bacteria; the added vermiculite is oxidized and modified by mixed acid so as to generate a carboxy group and a hydroxyl group, so that the anti-shrink velvet fiber has favorable dispersibility and stability; furthermore, the prepared cashmere crude fiber is subjected to surface grafting modification by taking methacrylamide as a grafted monomer, irregular graft product sediment particles exist between fibers, the surface scale expansion of the fibers is restricted, the interfibrous oriented friction is reduced, the velvet felting property is improved to a certain extent, and the manufactured velvet fiber is high in breaking strength and excellent in dust absorption prevention and anti-shrink property.

Disclosed is a composite. The composite comprises a nanocarrier and targeting molecules coupled to a surface of the nanocarrier. The particle size of the nanocarrier is smaller than 200 mn, and the polydispersity index (PDI) is smaller than 0.5. Also disclosed are an antitumor medicament comprising the composite and antitumor drug carried in the nanocarrier of composite, a preparation method therefor, and uses thereof. The composite can convey the antitumor drug into a tumor cell, and has a strong killing effect to the tumor cell.

The invention discloses a preparation method of a compound musk injection. The method includes the steps of: 1) performing primary distillation and re-distillation to artificial musk, pogostemon cablin, curcuma aromatica and rhizoma acori graminei to obtain a re-distilled liquid, and refrigerating the re-distilled liquid for later use; 2) uniformly mixing and dissolving borneol, menthol and stearic acid in anhydrous ethanol, slowly adding the mixture to a mixed liquid of polysorbate-80 and water for injection, and performing high-speed stirring, pressure reduced distillation and high-pressurehomogenizing emulsification to obtain composite nano emulsion; and 4) mixing the re-distilled liquid with the composite nano emulsion, adding active carbon, refrigerating the mixture overnight, removing the active carbon through coarse filtration with a titanium rod, and filtering, encapsulating and sterilizing the product, performing light inspection, and packaging and storing the product. The compound musk injection is good in dispersibility and stability, is low in toxic and side effects and has good application effect.

The invention discloses a grinding dispersant for sublimation ink. The grinding dispersant is prepared from the following raw materials in parts by mass: 10-40 parts of water-based acrylic resin, 5-50parts of alkynediol polyoxyethylene ether, 0-50 parts of isomeric alcohol polyether, 0-30 parts of trisiloxane polyoxyethylene ether and 35-65 parts of a solvent. The dispersing agent has a very gooddispersing and stabilizing effect. The grinding dispersant can achieve a stable dispersion effect on the basis of evaluation results of the placement stability, the centrifugal stability and the viscosity stability.

An aqueous ophthalmic composition includes a carbonic anhydrase inhibitor; at least one cellulose derivative selected from the group consisting of hydroxypropylmethyl cellulose acetate succinate and carboxymethylethyl cellulose; and water.

The invention provides an environmentally friendly and efficient propiconazole emulsifiable concentrate, which comprises the following components by mass: 10 to 70% of propiconazole, 1 to 10% of emulsifiers and the balance of dibasic esters. In the environmentally friendly and efficient propiconazole emulsifiable concentrate and a preparation method thereof, the dibasic esters are mixed with the propiconazole, which can dissolve propiconazole technical materials well and the obtained emulsifiable concentrate has good stability and dispersion. Compared with traditional emulsifiable concentratepreparations, the environmentally friendly and efficient propiconazole emulsifiable concentrate has no organic solvent pollution and a high flash point, and is safer in production, storage and use. The dibasic ester has a wide range of sources and low cost, which reduces the cost of the emulsifiable concentrate.

The invention relates to a high-dispersity high-viscosity modified asphalt which comprises the following constituents (by weight ratio): asphalt 100, styrene-isoprene-styrene segmented copolymer 3-12 having an average molecular weight of 30-300 thousand, petroleum resin 5-30 with a softening point of 70-150 deg C, polypropene wax 1-4 having an average molecular weight of 500-15000 and a softening point of 90-160 deg, sulfur 0.05-1. According to the invention, high viscosity, good dispersity and stability can be achieved, the PG classification can reach 82-28. The obtained high-performance modified asphalt can be used for both the general water seeping pavements, and specific sites such as bridge pavement and stress absorption layer.

The invention discloses a vanadium oxide nanosheet and a preparation method of a two-dimensional composite material of the vanadium oxide nanosheet and MXene. The preparation method of the vanadium oxide nanosheet comprises the following steps: dispersing a vanadium source, nucleating and growing vanadium oxide, preparing a vanadium oxide (V5O12.nH2O) nanosheet, and freeze-drying a product. The preparation method of the two-dimensional composite material of the vanadium oxide nanosheets and the MXene comprises the following steps: pre-treating the vanadium oxide nanosheets with positive electricity, self-assembling and compounding the vanadium oxide nanosheets with positive electricity and the MXene nanosheets with negative electricity, centrifugally washing and freeze-drying. According to the preparation method of the vanadium oxide nanosheet, a template agent does not need to be added any more, and the yield of the obtained nanosheet can be increased to 75% or above. When the two-dimensional composite material of the vanadium oxide nanosheet and the MXene is applied to an aqueous zinc ion battery, due to the interface effect of the composite material, the actual capacity exceeding the theoretical capacity of V5O12.nH2O is shown.

The invention relates to a rare earth yttrium oxysulfide red long afterglow polyamide luminescent fiber and its manufacture method, the luminescent fiber is composed of 90-96wt% of polyamide spinning raw material, 3-10wt% of rare earth yttrium oxysulfide luminescent material and less than 1wt% of nano-function auxiliary agent. The preparation method comprises the following steps: mixing luminescent master batch prepared by the above raw materials and polyamide slices in proportion, after drying for a certain time and a certain temperature, using a screw extruder for spinning and reeling through a special spinning technology to prepare POY filament, and texturing the POY filament to prepare DTY filament or preparing the FDY filament through drafting. The polyarmide fiber prepared by the method can emit the red afterglow with wavelength of 600-750nm after irradiation under daylight or fluorescence, the afterglow initial brightness is 2-3cd / m<2>, the afterglow life can reach 4-6 hours, the luminescent fiber is innocuous and unpoisonous, and has no adverse influence on human body and environment.

The invention discloses a rosin-based anionic coal water slurry dispersing agent and a preparation method thereof. The method comprises the steps that cyanuric chloride serves as a crosslinking monomer; dehydroabietylamine and polyethylene glycol are sequentially connected in cyanuric chloride molecules via a nucleophilic substitution reaction; half ester is generated via a reaction with maleic anhydride; and finally sulphonation is performed by sodium sulfite to form the rosin-based anionic coal water slurry dispersing agent. The dispersing agent can better combine with the surface of coal, and is good in dispersity and stability and wide in applicable coal type range.