54 results about "Drop Solution" patented technology

This invention discloses a high density ball ferric phosphate lithium process method in energy material process technique, which comprises the following steps: to use ferric nitrate, phosphate chrome and acetic acid lithium as materials and to add deionized water to process solution A; to mix impurity metal compound or carbon source into the solution A; to make solution of hexamethylenetetramine and carbamide to process solution B; to make solution C by adding solution B into solution A; to drop solution C with kerosene and to heat it into gel for deposition; to get the ball dry gel front driver after centrifugal separation; to get the high volume proportion capacity high density ferric phosphate lithium through high temperature process.

This invention relates to a method for synthesizing ZSM-5 zeolite molecular sieve, especially a method for rapidly synthesizing ZSM-5 zeolite molecular sieve with small grains. The method comprises: (1) adjusting the pH value of a mixture of silicon source and deionized water with an acid solution, stirring for hydrolysis, and adding organic templating agent to obtain solution A; (2) dissolving aluminum source with deionized water to obtain solution B; (3) dropping solution B into solution A slowly, and adding molecular sieve seed crystal; (4) placing the mixture into a hydrothermal kettle, crystallizing, washing the product, centrifuging, drying and torrefying to obtain ZSM-5 zeolite molecular sieve with small grains. The method is simple and time efficient, and the obtained ZSM-5 zeolite molecular sieve has small and uniform grains.

The invention provides an intelligent transfusion monitoring system and a monitoring method thereof. The intelligent transfusion monitoring system comprises a microprocessor, a setting module, an infrared detection module, a dripping speed control module, an alarming module, an information display module and a wireless transmission module, wherein the microprocessor compares the current liquid drop dripping speed detected by the infrared detection module with a preset dripping speed reference value, and by use of the PID algorithm, utilizes the variable diameter of a cam disc to change the size of a sandwich groove between the cam disc and a propping part so as to change the flow cross section of a dropper and further adjust the transfusion liquid drop rate; when the dripping time interval of two adjacent liquid drops is larger than the preset time interval reference value or when the liquid level of the drop solution is lower than the critical liquid level, an alarm is given, and the liquid dripping speed is reduced till the solution stops dripping. The intelligent transfusion monitoring system and the monitoring method thereof reduce medical accidents and improve the working efficiency of medical staff.

An aqueous artificial tear / rewetting drop solution is described. The solution may be utilized as both an artificial tear for persons wearing contact lenses and as a contact lens rewetting drop. The solution is based on the use of a citric acid / sodium citrate buffer system to prevent binding or other complexation between cationic antimicrobial preservatives and soft contact lenses, thereby making it possible to apply the solution directly to contact lenses while the lenses are being worn.

This invention discloses a method for preparing Ag / TiO2 composite film. The method coprises: (1) dissolving Ti compound in an organic solvent to obtain solution A; (2) mixing water, complexing agent, organic solvent and AgNO3 powder to obtain solution B; (3) dropping solution B into solution A, and strring to obtain a stable sol; (4) coating the sol onto a clean carrier by soaking and drawing, and treating at 450-600 deg.C to obtain Ag / TiO2 film. The method and equipment in this invention is simple. The content of Ag in the film is high, thus the obtained Ag / TiO2 film has good photocatalytic performance and high conductivity.

The present invention discloses hydrothermal process of preparing nanometer hydroxyapatite colloid. The preparation process includes the following steps: 1. dissolving citrate of 0.774-309.6 weight portions and calcium salt of 1.64-262.6 weight portions in water of 200-5000 weight portions to compound solution A; 2. dissolving phosphate of 0.894-357.6 weight portions and forming Ca / P weight ration of 1.5-1.67 in water of 50-1200 weight portions to compound solution B; 3. heating solution A to 20-60 deg.c, preferably to 40-50 deg.c, and dropping solution B to solution A in 5-60 min; 4. heating after dropping to 60-100 deg.c while stirring to react for 2-6 hr to obtain nanometer hydroxyapatite colloid particles dispersed stably in water phase; and 5. ultrafiltering to eliminate salt from the nanometer hydroxyapatite colloid solution until reaching the filtrate conductivity of 20-200 microsecond / cm to obtain the purified nanometer hydroxyapatite colloid solution.

The preparation process of nano composite titania / bentonite material includes the following steps: 1) adding water into sodium base or calcium base bentonite for expanding and shearing at high speed to obtain bentonite suspension; 2) adding TiCl2 into anhydrous alcohol via stirring and ageing to prepare transparent solution A; 3) dropping solution A into the mixed solution of glycerin and water in certain volume ratio via stirring and ageing to prepare transparent solution B; and 4) dropping bentonite suspension in certain amount into solution B while stirring, reacting inside one high pressure reactor with PTFE lining at 80-200 deg.c for 1-15 hr, washing the discharged product until no Cl ion and drying. The process is simple, practical and suitable for industrial production, and the product is a excellent photocatalyst.

The catalyst consists of Cu, Zn, Al2O3 and carbon nanotubes (CNTs) and has the constituents including Cu 10-55 wt%, Zn 4-30 wt%, Al 0-7.5 wt% and CNTs 5-80 wt%. The CNTs are multilayer wall ones with outer diameter of 10-50 nm, inner diameter of 2-4 nm, carbon content over 99 wt%, graphite carbon content over 80 wt%, and specific surface area of 100-160 sq m / g. The catalyst is prepared through preparing solution A of nitrate in the material metal components; preparing solution B of Na2CO3 in the equivalent concentration; coprecipitating reaction in a reactor with CNTs by dropping solution A and solution B in equal speed at 353K or soaking CNTs in mixed water or ethanol solution of nitrate; drying and burning. The catalyst has high and stable activity, high CO converting rate and high methanol yield.

The preparation process of nanometer calcium phosphate particle includes the following steps: dropping solution containing calcium ion slowly into mixed solution containing phosphate radical ion and cetyl trimethyl ammonium bromide (CTAB), dropping alkali solution to regulate pH value of the solution to obtain calcium phosphate sol, filtering after reaction to obtain precipitate, washing the precipitate for several times, and vacuum drying to obtain nanometer calcium phosphate particle of average size smaller than 100 nm. Altering the amount of added CTAB during reaction can change the diameter of the prepared nanometer calcium phosphate particle in 20-80 nm effectively.

The invention relates to a process for preparing nanocrystalline lead stannate, in particular a process for preparing ferro-electrical functional ceramic material, wherein water dissoluble inorganic salt precursor is utilized, the raw material being, PbNO3 (analytical pure), SnCl45H2O (analytical pure), NaOH (analytical pure), HNO3 (analytical pure), and the preparation process comprises the steps of, producing solution A by dissolving PbNO3 and SnCl4-5H2O with mol ratio 1:1 into HNO3 solution, then dissolving NaOH into deionized water to prepare solution B with pH=12, dropping solution an into solution B of equal quantity, maintaining the temperature at 80 deg. C, stirring about 8 hours by magnetic stirrer, maintaining pH=11, thus obtaining lacte colloidal sol, finally heating and dehydrating to obtain the high purity PbSnO3 polycrystalline powder of 10 nm sizes.

The invention provides a method for ultrasonic aging synthesizing manganese doping zinc sulphide nano crystal which includes steps as follows: adding anhydrous zinc chloride into distilled water for obtaining solution A, adding thiacetamide into a mixed solvent of distilled water and dimethyl sulfoxide for obtaining solution B; placing a taper bottle containing solution A into a cleaning groove type supersonic generator, dropping solution B into solution A slowly; whole reacting is in supersonic lead; then centrifugalizing and drying the reacted product for obtaining ZnS nano crystal; distributing ZnS nano crystal into ethanol or isopropanol of analytically pure, and pouring MnCl2.4H2O solution to supersonic shock, then aging in a constant temperature chamber, finally centrifugalizing and electrical heating vacuum drying for obtaining ZnS:Mn nano crystal. The method uses supersonic aging two steps synthesizing for preparing ZnS:Mn nano crystal, the reaction is processed in solution phase and needs not post anneal treatment. The method has advantages of simple technique equipment, mild reaction condition, no pollution, obtained product with regular shape, narrow range particle size distribution, better distribution performance, high doping efficiency and 100% productivity.

The invention discloses a wire drawing oil circulation treatment device, which comprises an oil storage pool, a spraying header, a collecting tank and an oil pump, wherein the spraying header is connected with the oil storage pool through a pipeline; the oil pump for pumping out solution in the oil storage pool is connected with the oil storage pool; the spraying header is arranged above bare copper flat wires of a drawbench; the collecting tank for collecting dropped solution is arranged below the bare copper flat wires of the drawbench; and the collecting tank is connected with the oil storage pool. The device is beneficial for cooling the bare copper flat wires rapidly, ensures the effect of sufficient lubrication and improves the quality of bare copper flat wires; and meanwhile, the wire drawing oil can be used in long-term circulation with low production cost.

A preparation method and purposes of photosensitivity polymer base carbon nanotube disperse auxiliary are provided. The preparation steps comprise (1) dissolving polystyrene maleic anhydride and 7- amino-4- methylcoumarin into dimethylsulfoxide; (2) feeding nitrogen to a container of step (1) for 30-60 minutes, sealing the container and keeping stirring, heating the container to 30 DEG C to 40 DEG C, reacting in heat insulation mode for 48-72 hours; (3) dropping solution in step (2) into mixed solvent with the volume ratio of petroleum ether and water as 1:4 under the condition of stirring, and performing suction filtration to obtain a solid; and (4) further processing the solid through dissolution, deposition and suction filtration, performing vacuum drying on an obtained pale yellow solid, and obtaining a photosensitivity polymer. The application steps comprise (1) dissolving the polymer into water-base solvent, adding carboxyl or hydroxyl to functionalize a carbon nanotube, vibrating the polymer in an ultrasonator for 5-30 minuts; and (2) illuminating the solution of step (1) under ultraviolet light for 0-60 minutes to obtain polymer base carbon nanotube dispersion liquid. The preparation method of the photosensitivity polymer base carbon nanotube disperse auxiliary is mild in preparation condition and convenient and simple to operate. An obtained polymer can remarkably improve the dispersion stability of a carbon nanotube in the water-base solvent.

The purpose of the “Dissolvable on-command Implant” is to act as a pressure equalizer tube in the eardrum, which has the unique characteristic that the tube can be dissolved with a specially formulated drop solution on-command. This tube can have various shapes and sizes, although the tube is usually a cylindrical tube with a hollow center, which maintains a ventilatory port for the middle ear space. With this design, the ear tube promotes drainage of middle ear fluid, lets air enter the middle ear, and allows for instillation of antibiotic drops.

The method comprises: a) placing the sample in a container; adding mixed agent and boiling 5-7 min to solve the sample; b) separation and precipitation, using EDTA volumetric method to measure the magnesia; c) filter, dropping the indicting liquid until the solution shows light red color; recording the volume of the dropped solution.

Relative movement occurs between the in-process substrate and the dropping section. While the substrate is rotated, the dropping section is relatively moved from an approximate center of the substrate toward an outer periphery thereof. While the dropping section relatively moves from the approximate center of the in-process substrate toward the outer periphery, the rotational frequency w for the substrate is decreased so that the solution film should not move due to the centrifugal force applied to a dropped solution film. Concurrently, feed rate v for the liquid from the dropping section is increased to form a solution film on the in-process substrate.

The invention discloses a stirring type production device for flaky microcapsules. The production device comprises a gel delivering and dropping system and a microcapsule forming system, wherein the gel delivering and dropping system comprises a gel delivery pump and a gel dropper, and the gel delivery pump is used for delivering a gel solution to the gel dropper at the set flow velocity; the gel dropper is tubular, one end is communicated with a solution outlet of the gel delivery pump, and the other end is located above the microcapsule forming system and enables the gel solution to drop from the gel dropper in a drop or column form; the microcapsule forming system comprises a forming tank and a stirrer, and the forming tank is located below the gel dropper and used for containing a salt solution; a stirring rotor of the stirrer is located in the forming tank and used for driving the salt solution to rotate. The production device has the advantages of simple technology, convenience in operation, capability of realizing continuous production, small occupied space and the like.

The invention provides a new synthesis process of a maleic anhydride monomethyl and dimethyl maleate concrete polycarboxylic acid slump retaining agent, the new synthesis process is characterized in that the process is polymerization of maleic anhydride monomethyl and dimethyl maleate and polyoxyethylene ether under effect of an initiator and a redox agent, the initiator is hydrogen peroxide; and the process is simple and easy to operate. The polymerization process is short, and production efficiency is high. The maleic anhydride monomethyl and dimethyl maleate concrete polycarboxylic acid slump retaining agent can be synthesized at normal temperature, and can also be heated and synthesized. The polymerization process has the advantages of flexible selection of temperature and low production cost. A polymerization drop solution is prepared only by use of deionized water to dissolve vitamin C, only needing dropwise addition, preparation operating labor burden of an operator can be reduced, the preparation is single, and has small error probability, and a basis for stable product quality is provided from operational aspects.

The invention discloses an environment-friendly composite textile finishing agent and a preparation method thereof. The preparation method includes adding octamethylcyclotetrasiloxane and potassium hydroxide into a 250 mL dry flask fitted with a rotary condensing tube, a stirrer, a dripping funnel and a thermometer, stirring, heating, dropping N-beta-aminoethyl-gamma-aminopropylmethyldimethoxysilane into the flask through the dripping funnel when liquid temperature rises to 40-60 DEG C, heating to 135 DEG C, holding the temperature of 135-140 DEG C when liquid viscosity rises 0.5 hour later, and allowing to react for 6 hours to obtain a colorless transparent viscous liquid. Organosilicon-polyurethane, a mixed liquid and organosilicon quaternary ammonium salt modified polysiloxane are mixedthrough a mixing device, so that working efficiency is improved, and fusing is better; synergistic effect helps impart good antibacterial, anti-wrinkle, softening, hydrophilic and flame-retarding properties to the finishing agent; the synthetic method herein is simple to perform, causes no environmental pollution and is expectedly suitable for environment-friendly industrial production.

The invention provides a preparation method and device for preparing microspheres through gas. The preparation method comprises the steps of pushing protection gas into a preparation device, dropping solution into the preparation device and curing the added solution into spheres in solution in a receiving device to obtain target microspheres. The invention creatively provides the preparation method for preparing microspheres through gas, especially multi-surface incongruous microspheres; experiment equipment is simple and easy to assemble; utilized materials are all degradable materials with no pollution; the utilized method is simple and green and achieves quick preparation and uniform particle size; based on the advantages, all incongruous microspheres prepared through the method has wider potential application.

Cathode material is composed of 60-70%(Wt) sulfurization crosslinking PVC, 10-15% binder; 15-30% conduction agent. Preparation method includes following steps: obtaining solution of sodium polysulphide by dissolving mixed anhydrous sodium sulfide and sublimed sulfur in solvent of N,N-dimethylformamide; obtaining solution of PVC by dissolving PVC in solvent of N,N-dimethylformamide; obtaining sulfurization crosslinking PVC by dropping solution of sodium polysulphide to solution of PVC; powder product is obtained after dry. The disclosed cathode material grafts structure of multi sulfur linkage to framework of chain polymer to fix up S-S structure. Features are: no pollution in synthesizing process, high energy density and favorable charging and discharging cycle.

The present invention discloses hydrothermal process of preparing nanometer hydroxyapatite colloid. The preparation process includes the following steps: 1. dissolving citrate of 0.774-309.6 weight portions and calcium salt of 1.64-262.6 weight portions in water of 200-5000 weight portions to compound solution A; 2. dissolving phosphate of 0.894-357.6 weight portions and forming Ca / P weight ration of 1.5-1.67 in water of 50-1200 weight portions to compound solution B; 3. heating solution A to 20-60 deg.c, preferably to 40-50 deg.c, and dropping solution B to solution A in 5-60 min; 4. heating after dropping to 60-100 deg.c while stirring to react for 2-6 hr to obtain nanometer hydroxyapatite colloid particles dispersed stably in water phase; and 5. ultrafiltering to eliminate salt from the nanometer hydroxyapatite colloid solution until reaching the filtrate conductivity of 20-200 microsecond / cm to obtain the purified nanometer hydroxyapatite colloid solution.

The invention discloses a slot type production device for tablet type microcapsules.The slot type production device comprises a gel conveying liquid dropping system, a microcapsule former and a microcapsule collector.The gel conveying liquid dropping system comprises a gel conveying pump and a gel dropper.The gel conveying pump is used for conveying a gel solution to the gel dropper at a set flow speed.The gel dropper is in a tubular shape.One end of the gel dropper is communicated with the liquid outlet of the gel conveying pump, and the other end of the gel dropper is located above the microcapsule former and used for making the gel solution fall from the gel dropper in the form of drops or liquid columns.The microcapsule former is a slot with one end high and the other end low.The higher end of the slot is an inlet end and located below the gel dropper.The lower end of the slot is an outlet end, located below the outlet end of the slot and used for collecting tablet type microcapsules.The device has the advantages of being simple in process, convenient to operate, capable of conducting continuous production, and the like.

The invention relates to a polymer and nitrogen-doped carbon nanotube co-modified nickel-cobalt-manganese cathode material and a preparation method thereof, wherein the technical scheme is that an ionic conductive polymer is added into acetone according to a concentration of 0.2-0.4 kg / m3 to obtain solution I. According to the mass ratio of ionic conductive polymer to Ni-Co-Mn cathode material is1: (100-110), Ni-Co-Mn cathode material is added into solution I, stirred and dried to obtain polymer coated Ni-Co-Mn cathode material (denoted as p-NCM). Nitrogen-doped carbon nanotubes were added into tert-butanol at the concentration of 2- 5kg / m3 to obtain solution II. At a concentration of 40-45 kg / m3, p-NCM is added the soultuion II to obtain the solution III. Ni-Co-Mn cathode material modified by polymer and nitrogen-doped carbon nanotubes was prepared by freeze-drying the spherical beads obtained by dropping solution III into liquid nitrogen. The invention has the advantages of simpleprocess, easy industrial production, excellent rate performance, structural stability and recycling performance of the prepared product.

The invention relates to a carvanol solubilizing solid composition and a preparation method and application thereof, wherein the preparation method of the carvanol solubilizing solid composition comprises the following steps: (1) modifying beta; Cyclodextrin is dissolved in water at 50 DEG C to obtain a clarified solution A; 2. Prepare solution B from carvanol and absolute ethanol according to that volume ratio of 1: 1; 3) drop solution B into solution A, stirring at 50 DEG C for 6 hour, cooling to room temperature, placing in refrigerator at 4 DEG C for 10 hours, filter, precipitating with water in turn, washing with absolute ethanol, and vacuum drying to obtain that carvanol solubilizing solid composition.

The invention relates to the preparation and application of a natural vegetable oil modified MOF structure polyoxide. The preparation method comprises the following steps: (1) preparing a precursor: mixing natural vegetable oil, a surfactant and a cosurfactant to prepare solution A; dissolving nickel salt and cobalt salt in water to obtain B solution; Taking the dispersion of nanometer titanium dioxide as C solution; Mixing an organic acid containing two or more carboxyl functional groups with water to prepare a D solution; Mixing solution A and solution D under the condition of water bath stirring, then dropping solution B and solution C in turn to form water-in-oil emulsion, continuing stirring under the condition of water bath, cooling, separating and drying to obtain precursor; (2) calcining the precursor to obtain polyoxides. The preparation method of the invention has the advantages of simple steps, easy realization and control, and the prepared material has high initial chargingand discharging efficiency, high specific capacity, good rate performance and cycle performance.

The invention discloses a method for detecting and evaluating degree of water repellence of granular substances such as soil mass and the like and belongs to the fields of environmental geotechnical engineering, disaster prevention and mitigation engineering, soil science and the like. According to the method, two glutaraldehyde solutions with a volume ratio of glutaraldehyde (50%) to deionized water being 1:3.5 and 1:0.2 respectively are prepared from glutaraldehyde (50%) and the deionized water, and the granular substances such as soil mass and the like with different degrees of water repellence are detected with a glutaraldehyde drop solution infiltration time method; during dropping, each drop of liquid is 0.05 ml, and time required for whole liquid infiltration is recorded; accordingto surface dimension and form of a sample, titration positions are distributed in a regular triangle shape in the center of the sample surface, and a tested average value of three points is taken as afinal result; water repellence and water repelling level of the sample are determined by referring to classification criterion of degree of water repellence. According to the method, a reagent is simple to prepare, operation is convenient and fast, cost is low, and detection precision is high.

The invention relates to a traditional Chinese medicine preparation, and particularly relates to a traditional Chinese medicine drop solution for treating rhinitis, as well as a preparation method thereof. The traditional Chinese medicine drop solution is prepared from the following active pharmaceutical ingredients: 20-30 parts of flos magnoliae, 20-30 parts of fructus xanthii, 15-20 parts of flos lonicerae, 10-15 parts of rhizoma acori tatarinowii, 10-15 parts of radix scutellariae,10-15 parts of rhizoma curcumae longae, 5-10 parts of radix glycyrrhizae, 5-10 parts of ramulus cinnamomi, 5-10 parts of fructus liquidambaris, 3-5 parts of fructus schisandrae chinensis, 3-5 parts of fructus forsythiae, 3-5 parts of herba taraxaci, 2-3 parts of radix astragali seu hedysari, 2-3 parts of radix paeoniae alba and 150-200 parts of sesame oil. The traditional Chinese medicine drop solution has the advantages that the traditional Chinese medicine drop solution is safe and reliable to use; all the active pharmaceutical ingredients are combined to achieve the efficacies of tonifying brain and opening orifice, strengthening the spleen to remove dampness, inducing sweat to open orifice, and the like; and the traditional Chinese medicine drop solution has the characteristics of being definite in curative effect, fast to take effect, high in curing rate, free from side effects and the like when being used for treating rhinitis.

The preparation process of nano composite titania / bentonite material includes the following steps: 1) adding water into sodium base or calcium base bentonite for expanding and shearing at high speed to obtain bentonite suspension; 2) adding TiCl2 into anhydrous alcohol via stirring and ageing to prepare transparent solution A; 3) dropping solution A into the mixed solution of glycerin and water in certain volume ratio via stirring and ageing to prepare transparent solution B; and 4) dropping bentonite suspension in certain amount into solution B while stirring, reacting inside one high pressure reactor with PTFE lining at 80-200 deg.c for 1-15 hr, washing the discharged product until no Cl ion and drying. The process is simple, practical and suitable for industrial production, and the product is a excellent photocatalyst.