280results about How to "Reduce agglomeration" patented technology

The invention discloses graphene-organic acid doped polyaniline composite material and a preparation method thereof. The preparation method includes the following steps: adding graphite oxide to dispersing agent for ultrasonic dispersion to form evenly dispersed graphene oxide liquid mixture; adding aniline monomer to the liquid mixture obtained in the first step for further dispersion under room temperature to form liquid mixture, and then blending for certain time; gradually dripping oxidizer and organic doping acid to the liquid mixture obtained in the second step, and blending for polymerization; centrifuging the liquid mixture obtained in the third step, and washing to get graphene oxide-polyaniline composite material; adding concentrated alkaline to the water suspension of the graphene oxide-polyaniline composite material, heating and blending for reaction; and centrifuging the mixture obtained in the fifth step and washing to get graphene-polyaniline composite material. The invention takes the advantage of the big specific surface area of graphene oxide and the capability of the graphene oxide for absorbing aniline on the surface thereof in on organic system to form sandwiched polyaniline/ graphene oxide- polyaniline compound through polymerization.

Methods involve in-flight processing of inorganic particles synthesized within the flow. Thus, the flow extends from an inlet connected to a reactant delivery system with inorganic particle precursors to a collector. The as formed inorganic particle can be modified with radiation and/or the application of a coating composition. Additional processing steps can be introduced as desired. Suitable apparatuses for in-flight processing can be based on addition of processing elements onto an inorganic synthesis reactor, such as a laser pyrolysis reactor.

The invention provides a high temperature self-repairing conductive silver adhesive. The high temperature self-repairing conductive silver adhesive is prepared from the following raw constituents by parts: 100 parts of epoxy resin, 10-30 parts of curing agent, 10-40 parts of epoxy diluent, 240-990 parts of silver pieces, 3-20 parts of coupling agent and 5-20 parts of self-repairing microcapsule; wherein the self-repairing microcapsule is composed of the following raw constituents by parts: 100 parts of epoxy resin, 8-20 parts of latent curing agent, 30-60 parts of diluents, 0.5-2.5 parts of emulsifying agent, 500-800 parts of nano silver wires, 5-16 parts of coupling agent, 60-120 parts of capsule wall material, 0.5-2 parts of antifoaming agent and 150-900 parts of deionized water. The invention also provides a preparation method of the high temperature self-repairing conductive silver adhesive. The high temperature self-repairing conductive silver adhesive has the positive effects that the repairing efficiency is high, the repairing effect is expanded on the basis of the original conductive network, crack-conductive network double repairing is realized, and the long-term using effect of the conductive adhesive is guaranteed, the cost is saved, and the reliability and service life of the conductive adhesive in high temperature working environment are improved.

The invention relates to a granular material for 3D binder printing, said granular material consisting of particles provided with an externally non-polar surface layer (2). The invention also relates to a method for producing a granular material for 3D binder printing, whereby a surface layer (2) having a non-polar outer side is applied to initial particles (1), and to a method for producing an object consisting of the inventive granular material, according to which a layer of the inventive granular material is applied to a base, and pre-determined regions (3) of said layer are moistened with a binding fluid, said binding fluid being selected from fluids in which a surface layer of the particles of the granular material is soluble. The invention further realties to objects consisting of interconnected particles of the inventive granular material. The invention enables a very precise printing process.

The invention discloses a functionalized graphene adsorbent and a preparation method and application of the functionalized graphene adsorbent. The adsorbent is mainly composed of grapheme and cetyl trimethyl ammonium bromide. The cetyl trimethyl ammonium bromide inserts into the edge or surface layer of the layered grapheme and or embeds into the edge or surface layer of the layered grapheme through the function of non-covalent bond. The mass fraction of the cetyl trimethyl ammonium bromide in the adsorbent is 40%-50%. The invention discloses the preparation method of the functionalized graphene adsorbent. The method comprises the steps of dispersing the graphene oxide into the water, adding cetyl trimethyl ammonium bromide to the dispersed suspension liquid and stirring to make reaction, then adding suspension liquid to the heated reaction system and conducting suction filtration, washing and drying to the black cotton-shaped precipitate obtained by reduction. The functionalized graphene adsorbent can wipe out the chrome in the waste. The adsorbent is added into the chromate waste water, control the temperature of the waste, then after the full adsorption and complete oscillatory removal of the chromate is completed. The functionalized graphene adsorbent and a preparation method and application of the functionalized graphene adsorbent has the advantages of being simple, high efficient, green, economical and environmental and the like.

The invention discloses a compound grapheme absorption agent which comprises grapheme, nanometer zero-valent iron and cetyl trimethyl ammonium bromide. The invention further discloses a method for preparing the compound grapheme absorption agent. The method for preparing the compound grapheme absorption agent includes the following steps that firstly, oxidized grapheme is dispersed in water with ultrasonic waves and oxidized grapheme suspension liquid is obtained; secondly, the nanometer zero-valent iron and the cetyl trimethyl ammonium bromide are added into the oxidized grapheme suspension liquid obtained in the first step, fully stirred and fully reacted and a reaction solution is obtained; thirdly, the reaction solution obtained in the second step is added with reductive agents and fully reacted and black flocks are obtained; fourthly, the black flocks obtained in the third step are filtered, washed and dried to obtain the compound grapheme absorption agent. The compound grapheme absorption agent is efficient, green, economic, friendly to environment, and suitable for large-scale production. The preparing method is simple and conditions are easy to control.

Pigmented inks are disclosed comprising an aqueous medium, a pigment, a dispersant, and a humectant. Inks are disclosed where the humectant is a sulfonated polyethylene oxide which provides long decap times and fast drying of the printed image. Inks are further disclosed where the dispersant is an alkyl(sulfophenoxy)benzenesulfonic acid or its salt. Such dispersants reduce the agglomeration of pigment particles and reduce or eliminate the deposition of foreign substances on heater elements during the jetting process. A variety of pigments, dispersants, humectants, and aqueous media can be used. Combinations of a sulfonated polyethylene oxide humectant and an alkyl(sulfophenoxy)benzenesulfonic acid (salt) dispersant provide inks with good stability, few kogation problems, long decap times and relatively fast drying times.

The invention relates to putty powder, in particular to functional diatomite putty powder and a preparation method thereof, wherein the putty powder includes in percent by weight: 10-50% of high-temperature activated diatomite, 5-30% of an inorganic binder, 30-70% of an inorganic filler, 0.01-2% of a functional aid, 0.1-5% of an inorganic pigment, 0.5-5% of an organic binder, and 0.5-5% of an organic aid. The functional diatomite putty powder meets the related standard requirements of putty powder and diatomite, and has qualified constructability and functionality, namely having standard-meeting properties such as humidity regulation, formaldehyde clarifying performance, long duration of formaldehyde purifying performance, mold-proof performance, and mold durability.

The invention discloses a modified graphene adsorbent as well as a preparation method and application thereof. The preparation method of the modified graphene adsorbent comprises the following steps: carrying out ultrasonic dispersion on oxidized graphene, adding hydroxyl aluminum and a surfactant, stirring fully, then adding a reducing agent, fully reacting so as to obtain a black flocculent precipitate, carrying out suction filtration on black flocculent precipitate, washing and drying, thereby obtaining the modified graphene adsorbent, wherein the surfactant comprises more than one of polyacrylamide, cetyl trimethyl ammonium bromide or sodium dodecyl benzene sulfonate. The modified graphene adsorbent has the characteristics of being simple, easily available, high in adsorption amount, high in removing rate and the like, and can be used for treating wastewater, especially acid dye wastewater; adopted raw materials are low in price and available; the preparation method is simple, is free from pollution, is low in cost, and is easy for industrialization.

To provide an image forming method, including: a pre-treatment liquid application step for applying a pre-treatment liquid on a recording medium including a substrate and a coating layer at least on one surface of the substrate, wherein the pre-treatment liquid is applied on a surface of the recording layer with the coating layer! a drying step for drying the recording medium on which the pre-treatment liquid has been applied; and an image forming step for forming an image on the recording medium after drying by discharging a water-based ink by inkjet method, wherein the pre-treatment liquid includes a water-soluble cationic polymer, an ammonium salt of an organic acid and water, and wherein the water-based ink includes water and negatively charged colored particles including a colorant.

Compositions in powder form of sterols or stanol esters, and milk powder and/or proteins are disclosed. A process of making the compositions is also disclosed. The suitability of incorporation of the compositions in powder form in food products, for example beverages and milk products, is also disclosed.

The invention discloses a preparation method of a bacterial cellulose-nano silver composite material. The composite material is prepared by the following steps: pretreating a bacterial cellulose wet film; impregnating in a silver salt solution; transferring the bacterial cellulose with adsorbed silver ions into a polyethylene glycol solution; dropwisely adding an ascorbic acid solution into the mixed system; and carrying out centrifugal separation, washing, and drying to obtain the bacterial cellulose-nano silver composite material. By using the method for reducing silver ions through ascorbic acid under the protection of polyethylene glycol, the invention takes advantages of the stabilizing effect of the polyethylene glycol, the mild reaction conditions and nontoxicity of the ascorbic acid and the like, thus forming a nano composite system having the characteristics of small particle diameter and uniform distribution. The bacterial cellulose-nano silver composite material can be usedin the fields such as medical antiseptic dressings and the like.

The invention relates to oxidized graphite sheet layer/polyaniline composite material and a preparation method thereof. The composite material is prepared by the following steps: the oxidized graphite is added into a dispersant for ultrasonic dispersion so as to form homodispersed single-sheet layer oxidized graphite mixed liquor; at the room temperature, aniline is added into the mixed liquor obtained in the first step drop by drop, and the ultrasonic dispersion is carried out to form the mixed liquor; a solution obtained by adding an oxidant into doping acid is dropwise added into the mixed liquor obtained in the second step for stirring and polymerization; the mixed liquor obtained in the third step is centrifugated, washed and dried in vacuum so as to obtain the oxidized graphite sheet layer/polyaniline composite material. The invention takes full advantages of big specific area of the oxidized graphite and surface oxygroup group to form binding sites and is organically combined with polyaniline skeleton by the chemical doping function of carboxylic acid group on the single-sheet layer of the oxidized graphite so as to form oxidized graphite/polyaniline complex; the operation process of preparing the product is simple, the production period thereof is short, the yield is high and the requirements on devices are low.

The coating method includes the steps of dissolving coating precursor(s) in a solvent to form a precursor solution: adding with mixing a miscible diluent to the precursor solution to form a coating solution; admixing solid particles to the coating solution to form a coating slurry, with the particles surrounded with the coating solution; spraying the coating slurry to form droplets containing at least one particle; passing the droplets through a drying zone where the droplets are dried and form dry particles coated with a coating material formed from the coating precursor(s); heat-treating the coating material on the particles emanating from the drying zone to remove volatile matter on the coating material, to improve integrity of the coating material and/or to effect another objective; and collecting dry coated particles.

The invention is a cutting and coating method for surface physical and chemical structure of nano particles. Through confecting the radio frequency plasma to control pulse ratio, time, power, and furthermore control the kind, content, sediment layer thickness the coarse rate of packing film of functional group, it can cut and coat the special monomer molecular functional group film on the surface of the nano particles, and adjusts the thickness, surface coarse rate and so on, gets the coating film with special physical and chemical structure, changes the physical and chemical structure of nano particles.

The present invention relates to pathological examination, especially to a liquid-based cell preservation solution used in pathologically examining cells such as human cervical mucus, sputum, urine, thoracic liquid, and tracheal mucus. The liquid-based cell preservation solution is characterized by being prepared from alcohols, a sodium phosphate buffer solution, disodium ethylenediamine tetraacetate, 0.08-0.12% sodium chloride, potassium chloride, formaldehyde, dithiothreitol, calcium acetate, magnesium acetate and the like. The cell preservation solution cannot only maintain the cell structure stability and reduce the agglomerated precipitation of the cell mucus and the cell breakage loss, but also enables the cells easily to be stained, improves the clarity of the cell sheets, and facilitates smooth performance of the examination work. Moreover, the cell preservation solution is low in cost and easy to promote and use.

Belonging to the technical field of catalysts for hydrogen production through catalytic cracking of methane, the invention relates to a catalyst for hydrogen production through catalytic cracking of methane and its preparation method. The catalyst in the invention is composed of a nickel salt, copper oxide, a precious metal catalytic promoter, an alkaline earth metal catalytic promoter, and a nanometer ZrO-ZnO composite carrier. The method in the invention comprises: taking the nickel salt, the copper oxide, the precious metal catalytic promoter, the alkaline earth metal catalytic promoter, azirconium salt, a zinc salt, and an alkaline precipitating agent as raw materials, first preparing a nanometer ZrO-ZnO composite carrier, then implementing the simple processes of mixing, ultrasonic dispersion, roasting, and moulding, thus obtaining a product. The method in the invention has the advantages of simple process, mild reaction condition, energy saving, sufficient material and liquid utilization, and no discharge of ''three wastes''. The product prepared by the method of the invention has the characteristics of high activity, good dispersibility, and strong temperature resistance, etc. The catalyst prepared by the method provided in the invention can be widely applied in catalytic cracking of methane, ethane and other low carbon alkanes, and is especially suitable for catalyticcracking of methane in a fluidized bed for hydrogen production.

The invention discloses a graphene-based waterborne acrylic paint and a preparation method thereof. The paint is prepared by mixing the following raw materials in parts by weight: 100 parts of an acrylic resin emulsion, 0.1-1 part of spitball graphene microspheres, 30-60 parts of an inorganic filler, 9-12 parts of an assistant and 10-20 parts of water. The spitball graphene microspheres with good mechanical property and elasticity can be obtained through spray drying and two-step method reduction. The spitball graphene microspheres are capable of effectively absorbing shock after being added to the paint, so that the abrasive resistance of a coating is improved and the chemical corrosion resistance can be improved. The spitball graphene microspheres have a unique microstructure, so that graphene can be effectively prevented from being stacked, the phenomena of aggregation and precipitation of the graphene in the paint are avoided and the overall stability of the paint is greatly improved.

The invention relates to a preparation method of a magnolia fruit extract, which is characterized in that the magnolia fruits as raw material are processed to the magnolia fruit extract by the steps of baking, pulverizing, solvent extraction and concentration. The magnolia fruit extract is added into tobacco shreds, so as to greatly reduce undesired gases in the smoke, reduce irritation of the smoke, improve the concentration and agglomeration of the smoke, improve the smoking property and enhance elegant flavor of the smoke. The preparation method is advantageous in developing the new use of magnolia fruits by use of the common solvents and methods and providing a new natural tobacco flavor.