30results about How to "Avoid aggregation and sedimentation" patented technology

The invention discloses a novel phase-change material composition. The novel phase-change material composition mainly comprises carbon nanotubes, graphene, fumed silica, metal or metal oxide particles and a phase-change material. The carbon nanotubes, graphene and metal or metal oxide particles can further accelerate heat transmission. The phase-change material is used for improving a hot end initial temperature absorption rate. The fumed silica has effects of precipitation prevention and thickening and can prevent graphene and particle aggregation settlement after heat absorption liquefaction of the phase-change material. The carbon nanotubes, graphene and metal or metal oxides can finally form a full 3D network comprising particles (metal or metal oxides), wires (carbon nanotubes) and planes (graphene) in the fluid (of phase-change material subjected to heat absorption melting). The novel phase-change material composition has high heat conductivity and low thermal resistance value, has high specific heat capacity, greatly improves phase-change material heat absorption, heat storage and heat radiation efficiency and has a high practical value.

The invention relates to a preparation method of a nanometer zirconia heat barrier coating which is mixed with rare-earth oxide and used for liquid-phase plasma spraying. The method comprises that precursor sol is used as a spraying raw material, atomized into fine liquid drops under atomized gas pressure, sent into plasma flame flow and sprayed and deposited on a matrix to obtain the nanometer zirconia heat barrier coating. The precursor sol is hydroxid precursor sol. According to weight proportion, the raw material includes 63 to 73 percent of ZrOCl2.8H2O and 27 to 37 percent of crystalline-state stabilizer oxide which is rare earth oxide. The invention can overcome the problems of poor sol distribution, poor sol flowing performance, chlorid ion erosion, poor sol granule atomizing effect, uneven granule sizes, and the like in the the traditional liquid-phase plasma spraying process. In the invention, a composite coating is prepared, and has the advantages of high depositing efficiency, low cost, wide spraying material, strong adaptability of the liquid-phase precursor, low heat conductivity, good heat and shock resistance, and the like.

The invention discloses a kitchen fume purifying aqueous solvent and a preparation method thereof. The kitchen fume purifying aqueous solvent comprises the following raw materials: sodium dodecyl benzene sulfonate, fatty alcohol polyoxyethylene ether sulfate, nonylphenol polyoxyethylene ether-10, isopropanol, triethanolamine, sodium silicate, sodium citrate, polypropylene dialkyl ammonium chloride, carboxymethyl cellulose fiber, fumed silica and water, wherein the mass ratio of the polypropylene dialkyl ammonium chloride to the carboxymethyl cellulose fiber to the fumed silica is (6-10):(2-4):(0.6-1); and the kitchen fume purifying aqueous solvent is prepared by grading and mixing the raw materials. Compared with the prior art, the product has the advantages that the maximal oil dirt adsorption quantity and the secondary oil dirt adsorption quantity are further increased.

The invention discloses a liquid expanding agent capable of expanding step by step and a preparation method thereof. The liquid expanding agent is prepared by the following steps: 1, weighing a nano magnesium oxide powder mixture, butanol, span-80 and water, and stirring at a constant temperature of 30-40 DEG C for 1 hour; 2, heating to 50-70 DEG C, sequentially adding polypropylene glycol 400, dimethicone and a shrinkage reducing component, and stirring for 1-2 hours; and 3, adding polyacrylamide, stirring for 1-2 hours, curing at constant temperature for 1 hour, and cooling to room temperature to obtain the liquid expanding agent capable of expanding step by step. An expansion component in the liquid expanding agent is formed by grinding, modifying and mixing magnesium oxide fired at different temperatures of 700 DEG C, 900 DEG C and 1100 DEG C, the magnesium oxide powder is mixed and ground to a nanometer level, the hydration time of the three magnesium oxide powder prepared at different firing temperatures is different, and the step-by-step expansion effect is achieved; by compounding with the shrinkage reducing component and the like, the volume expansion of concrete can be remarkably improved, the concrete volume shrinkage is reduced, and the crack resistance and impermeability of concrete are improved.

A method of manufacturing a dispersion liquid includes preparing a mixed liquid which contains a first solvent, a second solvent having solubility which is equal to or less than 1% with respect to the first solvent, and a compound having a polymerizable functional group; and microcapsulating and dispersing the first solvent or the second solvent by performing liquid plasma treatment on the mixed liquid while applying ultrasonic waves to the mixed liquid by using an ultrasonic wave generating apparatus.

The invention discloses a stabilizer and an application thereof, and SBS modified asphalt and a preparation method thereof. The stabilizer is prepared by a method comprising the following steps: carrying out an esterification reaction on a styrene-maleic anhydride copolymer and long-chain alcohol under the action of acid catalysis to obtain the stabilizer. The stabilizer disclosed by the inventioncan stably adsorb and act on polystyrene chains and asphaltene macromolecules of SBS; by utilizing the long-chain alkyl, the agglomeration of SBS and the aggregation and sedimentation of asphaltene in the heat storage process can be prevented, and the dispersion effect of light components in the asphalt on the SBS and the asphaltene can be enhanced, so that the SBS modified asphalt has long-termheat storage stability.

The invention relates to a silibinin nano suspension, a lyophilized preparation thereof and a preparation method, the silibinin nano suspension comprises silibinin, a stabilizing agent and water, the mass ratio of the silibinin to the stabilizing agent is (1-10): 1, and the lyophilized preparation is a lyophilized preparation of the silibinin nano suspension and a lyophilized preparation of the silibinin nano suspension. The stabilizer is a composition of a polyethylene caprolactam-polyvinyl acetate-polyethylene glycol grafted copolymer and lauryl sodium sulfate, and the mass ratio of the polyethylene caprolactam-polyvinyl acetate-polyethylene glycol grafted copolymer to the lauryl sodium sulfate is (1-5): (1-5). According to the silibinin nano suspension and the preparation method thereof, the particle size of the nano drug is optimized by adjusting the composition of the stabilizer, the preparation method and parameters, and the dissolution rate and the bioavailability of the insoluble bulk drug silibinin are remarkably improved through the finally prepared silibinin nano suspension.

The invention discloses a nano liquid disperse dye with high washing fastness as well as a preparation method and application thereof, and belongs to the field of textile chemical industry. The nano liquid disperse dye with high washing fastness is prepared from the following components in percentage by mass: 10 to 60 percent of disperse dye, 4 to 16 percent of macromolecular anionic dispersant, 0.1 to 8 percent of traditional anionic dispersant, 0.1 to 5 percent of humectant, 0.05 to 1 percent of defoaming agent, 0.02 to 4 percent of thickening agent, 0.02 to 0.2 percent of preservative and the balance of water, wherein the polymeric dispersant is an anionic dispersant and comprises one or more of an alkylphenol polyoxyethylene ether anionic surfactant, a modified styrene polyoxyethylene ether anionic surfactant and a polycarboxylic acid hyperdispersant. The nano liquid disperse dye with high washing fastness provided by the invention avoids the problems of spray drying and chemical material dust pollution of conventional powdery commercialization, has high washing fastness, and is a novel functional dye processing mode.

The invention discloses a high-expansion-rate liquid expanding agent and a preparation method thereof. The preparation method comprises the following steps: 1, weighing a grease-modified expanding component, butanol, dimethyl silicone oil, span 80 and water, and perforing stirring at a constant temperature of 40-50 DEG C for 0.5-1 h; 2, heating the obtained mixture to 70-80 DEG C, sequentially adding polypropylene glycol 400 and a shrinkage reducing component, and continuously performing stirring for 1-2 h; and 3, adding cationic polyacrylamide, performing stirring for 2 h, curing the obtainedmixture at constant temperature for 1 h, and cooling the cured mixture to room temperature to obtain the high-expansion-rate liquid expanding agent. The liquid expanding agent is mainly used for high-grade concrete and concrete with a shrinkage compensation requirement; and the expansion component is obtained by compounding calcium sulphoaluminate clinker, anhydrous aluminum sulfate and anhydrousgypsum, so that the hydration rate of the expansion component is effectively controlled, the volume expansion of the concrete can be remarkably improved, the volume shrinkage of the concrete is reduced, and the crack resistance and impermeability of the concrete are improved.

The invention relates to a non-ligand-assisted perovskite doped multi-emission material and a preparation method thereof. The preparation method of the perovskite doped material comprises the following steps: 1) dissolving a polymer in an organic solvent to obtain a first solution containing the polymer; 2) adding halide salt into the first solution, and uniformly conducting mixing to obtain a second solution; and 3) performing vacuum drying on the second solution to obtain a perovskite doped material. The halide salt in the step 2) is a composition of a main body inorganic halide salt A and a doped halide salt and a main body inorganic halide salt B, or is a composition of a main body inorganic halide salt A and a doped halide salt and an organic amine halide salt. The invention also discloses the perovskite doped material obtained by the method. The preparation method is simple, low in cost and suitable for large-area production, the crystallinity of the material is good, the dispersity of nano-particles is good, and double-band emission is effectively achieved.