78results about How to "Good dispersion properties" patented technology

The invention relates to a preparation method of nanometer in situ composite reaction type organic silicone modified cationic water-based polyurethane and a product thereof. The preparation method comprises the following steps: preparing raw materials of basic monomers, modified monomers and adjuvants; carrying out dewatering pretreatment on mixed polyether glycol; and carrying out pre-polymerization, chain extension, blocking, quaternization and emulsification. So the nanometer in situ composite reaction type organic silicone modified cationic water-based polyurethane is obtained. The method is easy to implement and control, and the nanometer in situ composite reaction type organic silicone modified cationic water-based polyurethane prepared by the method is in a microemulsion state, has a small and uniform emulsion particle size and a good dispersion, and combines merits of organic silicone, polyurethane and inorganic nanometer materials. So the polyurethane prepared in the invention, which can be used to improve the color fastness and pilling resistance of various dyed textiles, allows the textiles to have certain stain resistance, and soft feel of the textiles not to be damaged. Thereby the polyurethane has the advantages of good application performance, wide range of use, safety and environmental protection, and convenient usage.

Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons.

The invention relates to a detecting method and a dielectric particle containing magnetic material employed in the detecting method. In order to improve the practical utility of detection methods that utilize localization of bound substances by magnetic particles. A magnetic binding substance (Bm), which is a first binding substance (B1) that specifically binds with a target substance (A), having magnet enveloping dielectric particles (B), which have magnetic particles (M) enveloped therein and surfaces modified with functional groups that exhibit polarity within a liquid sample, attached thereto, and a labeling binding substance (B0), which is a second binding substance (B2) that specifically binds with the target substance (A) having photoresponsive labels (O) attached thereto, are mixed with the liquid sample such that binding reactions occur. A magnetic field is generated within a sample cell (10), to draw the magnetic binding substance (Bm) to a local region. Excitation light is irradiated only onto a predetermined region including the local region while the magnetic binding substance (Bm) is drawn to the local region, causing the photoresponsive labels (O) present therein to generate optical signals. The optical signals are detected.

Into calcium hydroxide emulsion of 10-12 wt% concentration and at 20-25 deg.c, compound crystal form controlling agent is added while stirring, and then the mixture is transferred into a bubbling carbonating tower for carbonization for 50-70 min while introducing CO2 gas in the rate of 50-80 1/min. Kg calcium hydroxide and cold water to control the temperature not higher than 60 deg.c until the pH value being reduced to 7-8. Through the one-step carbonization process, cubic calcium carbonate of 80-100 nm size is prepared. The said process is suitable for use in industrial production and has low production cost and high production efficiency, and the product has excellent dispersant characteristic and may be widely used, especially in producing silicon rubber product.

The invention discloses a self-microemulsion composition of an insoluble medicine and without an oil phase. The composition comprises active medicines, a solvent and a surfactant, and can be adsorbed by a solid adsorbent to further obtain a solid self-microemulsion composition. The high in-vitro dissolution rate and the high in-vivo biological utilization degree of the self-microemulsion composition disclosed in the invention are maintained.

The invention discloses a graphene/trimanganese tetraoxide composite nano lubricating additive and a synthesis method thereof. Specifically, the synthesis method includes: mixing graphite with concentrated sulfuric acid and potassium permanganate in a high mass ratio, and carrying out oxidation reaction to obtain a mixed solution containing graphite oxide and/or graphene oxide; adding hydrogen peroxide into the mixed solution to reduce unreacted potassium permanganate, and adding water for dilution, and conducting ultrasonic treatment for a predetermined period of time to obtain a graphene oxide mixed solution; adjusting the pH of the graphene oxide mixed solution to alkaline, and carrying out reaction to obtain trimanganese tetraoxide and loading it to graphene oxide, and evaporating or filtering the mixture to obtain a solid product; subjecting the solid product to reduction treatment at high temperature to obtain a graphene/trimanganese tetraoxide composite product; and cleaning thegraphene/trimanganese tetraoxide composite product, and then performing ball milling treatment, thus obtaining the graphene/trimanganese tetraoxide composite nano lubricating additive. The method issimple and efficient, and the prepared additive has excellent dispersibility and lubricity.

A method of manufacturing a dispersion medium includes bonding a siloxane compound to the surface of core particles by a precursor of the siloxane compound and the surface of the core particles being reacted in the dispersion medium, and removing the precursor not bonded to the core particles.

The invention discloses a erythrocyte membrane-encapsulated rapamycin nanoparticles. The nanoparticles comprise a rapamycin nano-drug core, and the nano-drug core takes PLGA as a carrier and is encapsulated in an erythrocyte membrane. The nanoparticles disclosed by the invention cooperate with an efficient drug solubilizing effect and an autologous RBC nano-surface immune escape effect of an artificial nano-drug carrier; long-acting blood circulation can be shown, targeted atherosclerosis drug delivery and local controllable drug functionalization are achieved; plaque development is remarkablyimproved; and the effect of safely and efficiently treating atherosclerosis is achieved.

The invention provides a graphene aqueous dispersion liquid, graphene concrete and preparation methods of the graphene aqueous dispersion liquid and the graphene concrete. The graphene aqueous dispersion liquid is prepared from the following raw materials, in percentages by mass: 1-5% of graphene or graphene oxide, 0.5%-2% of sodium dodecylbenzenesulphonate, 0.5%-2% of polyvinylpyrrolidone, and the rest is water. The preparation method of the graphene aqueous dispersion liquid includes the following steps: taking the graphene or the graphene oxide, the sodium dodecylbenzenesulfonate, the polyvinylpyrrolidone and the water according to percentages by mass, and performing full mixing and dispersion to obtain the graphene aqueous dispersion liquid. The invention aims to provide the graphene aqueous dispersion liquid and the preparation method thereof, and the preparation method of the graphene concrete by using the graphene aqueous dispersion liquid. The graphene aqueous dispersion liquidprovided by the invention can improve the problem of settlement of graphene in an aqueous medium, realize the uniform and stable dispersion of graphene in cement concrete, and can be used to preparethe graphene concrete with excellent quality and performance.

A lubricating composition for use in the crankcase of an engine comprising a base oil and one or more additives, wherein the base oil comprises a Fischer-Tropsch derived base oil and wherein the lubricating composition comprises one or more comb polymers. The lubricating composition of the present invention has been found to improve sustained fuel economy properties whilst obtaining improved piston cleanliness properties and improved dispersancy properties.

The present invention relates to a binder for a lithium-sulfur secondary battery cathode, and a composition containing the same. The binder of the present application enables a cathode active material electrolyte to have excellent resistance.

The invention belongs to the technical field of DTY oil, and particularly relates to anti-yellowing stable DTY textile oiling agent and a preparation method thereof. The DTY textile oiling agent is prepared from industrial white oil, polyoxyethylene (20) sorbitan monooleate, sorbic acid monostearate, D-phenylalanine, 1-fluoro-6-isopropyl quinoline iodate, an antistatic agent, an anti-splashing agent and a penetrating agent. The anti-yellowing stable DTY textile oiling agent provided by the invention not only has excellent bundling property, smoothness, emulsifying property and antistatic property, but also has very excellent stability, and can keep self-stability for a long time without yellowing.

The invention discloses a preparation method of a hypocrellin-transferrin targeted drug delivery system and an application of the hypocrellin-transferrin targeted drug delivery system in photodynamic therapy. The method comprises the following steps: with holo-transferrin as a carrier, inactivating the holo-transferrin by urea and beta-mercaptoethanol, and making a three-dimensional structure loose to expose Fe-ion coordination sites; adding excessive hypocrellin, coordinating with Fe coordination sites, eliminating uncombined HA and urea through dialysis, and restoring the three-dimensional structure of holo-transferrin with beta-mercaptoethanol, thereby obtaining the hypocrellin-transferrin targeted drug delivery system. The method is simple in preparation and good in application prospect; the hypocrellin-transferrin targeted drug delivery system can be prepared into freeze-dried powder for storage, and the freeze-dried powder is prepared into a preparation suitable for intravenous injection after being dissolved. Due to the tumor targeting action of holo-transferrin in the system, the photosensitive anti-tumor activity of hypocrellin can be significantly strengthened by the targeted drug delivery system.

The invention relates to a photocuring 3D printing nanoparticle reinforced metal part and a preparation method thereof. The preparation method comprises the following steps that after amorphous powder and a coating agent are mixed, a coupling agent and metal powder are added into a mixture at the set temperature, and stirring is carried out for coating; post-treatment is carried out on a product obtained in the coating step, and an amorphous layer coated metal powder material is obtained; the amorphous layer coated metal powder material, photosensitive resin, an ultraviolet light initiator and a dispersing agent are prepared into a photocuring 3D printing slurry; a photocuring 3D printer is used for carrying out photocuring forming treatment on the photocuring 3D printing slurry, and a photocuring 3D printing biscuit is obtained; and degreasing and sintering treatment are carried out on the photocuring 3D printing biscuit, and the photocuring 3D printing nanoparticle reinforced metal part is obtained. According to the photocuring 3D printing nanoparticle reinforced metal part and the preparation method, the metal powder is prepared into the amorphous layer coated metal powder material with a powdery core-shell structure, so that the dispersity of the metal powder in the photosensitive resin slurry is improved, and the photocuring 3D printing nanoparticle reinforced metal part is prepared.

The invention discloses a preparation method of an organosilicon/hydroxyapatite composite adsorption fiber. The preparation method comprises the following steps: adding polyvinylpyrrolidone to anhydrous ethanol, and performing ultrasonic uniform stirring until the polyvinylpyrrolidone is completely dissolved in order to obtain a dispersed alcohol solution; carrying out wet ball-milling on the hydroxyapatite to form a fine powder, slowly adding the fine powder to the dispersed alcohol solution, and performing a low-temperature ultrasonic reaction for 2-3 h to obtain a first mixed solution; adding dichlorodimethylsilane to toluene, performing stirring until uniformity, then dropwise adding distilled water, and performing sealing stirring for 1-3 h to obtain a second mixed solution; slowly adding the first mixed solution to the second mixed medium, carrying out low-temperature and high-frequency ultrasonic dispersion for 30-60 min, and performing microwave oscillation for 1-2 h to obtaina pre-spinning solution; carrying out high-temperature electrostatic spinning on the pre-spinning solution to obtain single-fiber spun filament, twisting several strands of the single-fiber spin filaments to form twisted spun filaments, and bundling the twisted spun filaments to form a fiber web; and adding the fiber web an ethanol-water solution, carrying out a microwave oscillation reaction for30-60 min, and taking out and drying the fiber web to obtain the organosilicon/hydroxyapatite composite fiber material.

The invention relates to the field of inks, and discloses an electric-conduction ink containing a graphene complex, and a preparation method thereof, wherein the electric-conduction ink contains a specially-made graphene complex, the graphene complex is prepared by using a special graphene stripping agent, and has high peeling strength, and the electric-conduction ink made of the graphene complexhas significantly excellent electric conductivity compared with the electric-conduction ink containing the existing graphene and the derivative thereof.