50results about How to "Solve easy aggregation" patented technology

The invention relates to a low-compressive-deformation and high-conductivity rubber composite material and a preparation method thereof. The low-compressive-deformation and high-conductivity rubber composite material is prepared by the following steps of: taking silicon rubber as a base body and utilizing modified grain-shaped and fiber-shaped metal-plating conductive fillers containing a reactive double-bond silane coupling agent under a CO2 supercritical state to prepare low-compressive-deformation and high-conductivity rubber composite material. Under the condition of guaranteeing the high conductivity, the use amount of the conductive fillers is reduced and the composite material has low compressive deformation and high conductive property.

The invention discloses a lansoprazole enteric liquid capsule which has a simple manufacturing process, avoids water from being led in during the manufacturing process, and has good storage stability and a manufacturing method. The lansoprazole enteric liquid capsule consists of lansoprazole, dispersant, edible vegetable oil, magnesium oxide or magnesium carbonate, an emulsifier, poloxamer, animal and vegetable glue, and sodium citrate. After being mixed uniformly, raw materials enter into a colloid mill, and then the raw materials are infused into a hollow capsule, and polyacrylic resin ethanol solution is used as the sealing material to sleeve and seal the infused capsule. The invention suspends the lansoprazole into hydrophobic excipient oil, forms a protective film around the lansoprazole powder, does not lead in water during the manufacturing process, avoids the degradation of the lansoprazole, does not need to wrap an isolation layer and an enteric coating, and has short production cycle, simple production process, low cost, and good product quality and stability.

The invention discloses a nano-silver anti-microbial regenerated silk fibroin material and a preparation method thereof. The method comprises the following steps: 1) dissolving degumming silk or regenerated silk fibroin in a solvent taking formic acid as a main component, thereby acquiring a fibroin formic acid solution, and then adding a silver salt, stirring and dissolving; 2) adopting different regenerating technologies for processing the fibroin formic acid solution into the regenerated silk fibroin material in different forms; and 3) performing organic solvent after-treatment on the regenerated silk fibroin material, fully washing with deionized water and drying, thereby acquiring the nano-silver anti-microbial regenerated silk fibroin material. The nanometer silver in the regenerated silk fibroin material provided by the invention has the advantages of small grain size, excellent dispersity, high stability and excellent and long-lasting anti-microbial property. The preparation method is simple, the operation is easy, the cost is low and the material can be easily industrialized.

An object of the present invention is to provide a polishing liquid for CMP with which polishing scratches can be reduced and a sufficiently high polishing rate can be obtained in a CMP step for an ILD film, aggregation of an abrasive grain is difficult to occur, and high flatness is obtained, and provide a polishing method using the same. The polishing liquid for CMP according to the present invention is a polishing liquid for CMP containing an abrasive grain, an additive, and water, wherein the abrasive grain comprises a cerium-based particle, and the additive comprises a 4-pyrone-based compound and at least one of a nonionic surfactant or a cationic surfactant:

[wherein X¹¹, X¹², and X¹³ each independently represent a hydrogen atom or a monovalent substituent.]

The method for producing a disintegratable zinc oxide powder of the present invention is characterized by comprising: neutralizing an aqueous solution containing a water-soluble zinc salt and a carboxylic acid or an aqueous solution containing a water-soluble zinc carboxylate with an alkali carbonate to produce precipitate; and firing the precipitate to obtain zinc oxide powder. As a water-soluble zinc salt, zinc chloride or zinc acetate is preferably used. As an acid, acetic acid is preferably used. As an alkali carbonate, sodium carbonate is preferably used. The disintegratable zinc oxide powder has the morphology in which the primary particles of zinc oxide are aggregated to form secondary particles, and these secondary particles are further aggregated to form the zinc oxide powder. The powder can achieve excellent UV protection capability, excellent transparency, and excellent feeling in use through its disintegration. Also, it has good usability and good handling properties.

The invention discloses a preparation method of rare earth-aluminum-titanium-boron alloy. The preparation method comprises the following steps: weighing titanium powder or aluminum-titanium intermediate alloy, boron powder or aluminum-boron intermediate alloy, rare earth metals or rare earth-aluminum intermediate alloy, and aluminum ingot; heating for melting the aluminum ingot, then adding the raw materials for carrying out a reaction, stirring until melt reacts completely, and then refining; carrying out heat preservation and then drossing so as to obtain the rare earth-aluminum-titanium-boron alloy. The rare earth-aluminum-titanium-boron alloy is prepared from the following components by weight percent: 1.0-10.0% of titanium, 0.5-5.0% of boron, 0.1-3.0% of rare earth and the balance ofaluminum. The invention also discloses the rare earth-aluminum-titanium-boron alloy. The preparation method improves the size, morphology and distribution of a TiAl3 phase and TiB2 particles in a refiner, and solves the problem that the TiB2 particles are easy to aggregate.

The invention relates to a biomass nanocellulose/nano transition metal oxide porous material, and a preparation method and application thereof. Nano transition metal oxide is loaded on the surface of biomass nanocellulose through non-covalent interaction. The biomass nano cellulose/nano transition metal oxide porous material has both adsorption and catalysis functions, and can be used as a recyclable adsorption and degradation material; when being used as an adsorption catalytic degradation material, the porous material has the advantages of high adsorption catalytic degradation efficiency, environment friendliness, excellent regeneration capacity, easiness in separation, recyclability and no repeated pollution, and has a considerable application prospect.

The invention provides an anti-burn and anti-distortion cable based on flame-retardant inert gas, and relates to the technical field of cables. The invention discloses an anti-burn and anti-distortioncable based on flame-retardant inert gas. The device comprises an outer package, an inner cavity is formed in the outer package, a first fireproof coating is fixedly installed on the inner side of the outer package, an inner package is fixedly installed in the outer package, a connecting rod is fixedly connected between the inner package and the outer package, and a second fireproof coating is fixedly installed on the periphery of the inner package. The invention discloses an anti-burn and anti-distortion cable based on flame-retardant inert gas. Concentrated heating of internal wires is avoided, torsion generated by twisting can be buffered, the phenomenon that the wires are broken due to long-time excessive twisting is avoided, internal filling materials are saved, the flexibility of the cable is improved, the effect of fire on the cable is relieved, fusing of the internal wires is relieved, and time is bought for cutting off a cable power source.

Low-oxygen clean steel is provided containing C, Si, Mn, P, and S as chemical components, and further containing, by mass %, 0.005% to 0.20% of Al, greater than 0% to 0.0005% of Ca, 0.00005% to 0.0004% of REM, and greater than 0% to 0.003% of T.O, wherein the REM content, the Ca content, and the T.O content satisfy 0.15≦REM/Ca≦4.00 and Ca/T.O≦0.50, nonmetallic inclusions which have a maximum predicted diameter of 1 μm to 30 μm measured using an extreme value statistical method under the condition in which a prediction area is 30,000 mm², and contain Al₂O₃ and REM oxide are dispersed in the steel, an average proportion of the Al₂O₃ in the nonmetallic inclusions is greater than 50%, the REM is one or two or more of rare-earth elements La, Ce, Pr, and Nd, and the steel is Al-deoxidized steel or Al—Si-deoxidized steel.

The invention relates to the technical field of high polymer materials, and provides a high-waterproof moisture-permeable film and a preparation method thereof. The high-waterproof moisture-permeablefilm is prepared from, by weight, 10-20 parts of hydrophilic modified polylactic acid, 5-8 parts of modified carbon nanotubes, 6-12 parts of polydimethylsiloxane, 0.8-1.5 parts of polyvinyl alcohol and 90-150 parts of an organic solvent. The biodegradable polymer polylactic acid is selected as the raw material, so that the problems that in the prior art, a waterproof breathable film is difficult to biodegrade and difficult to treat after being discarded are solved, and meanwhile, electrostatic spinning and other technical means are combined, so that the prepared film material has excellent waterproof and moisture permeable performance, and the mechanical property is also improved.

A method for forming colloidal particles by boiling a solution containing a metal salt and a reducing agent; and a method for preparing a colloidal solution wherein the concentration of the metal salt in the solution is 1×10⁻⁴ mol/L or more and less than 4×10⁻⁴ mol/L; the equivalent concentration of the reducing agent is four times or more and 20 times or less the equivalent concentration of the metal salt; and the reaction time is 60 minutes or more and 300 minutes or less. A carrier wherein colloidal particles are fixed on the surface of a substrate by applying the colloidal solution prepared by the above-described method. Methods for manufacturing a fuel cell cathode, a fuel cell anode, and a low temperature oxidation catalyst wherein a colloidal solution prepared in the state wherein a solution containing a metal salt and a reducing agent is boiled to remove dissolved oxygen is applied to a substrate and colloidal particles are fixed on the substrate.

The invention discloses a rapid drying device for the stainless steel machining process. The rapid drying device comprises a box body, a feeding port and a discharging port are fixedly formed in the middles of the left side and the right side of the box body correspondingly, supporting plates are fixedly arranged at the upper ends and the lower ends of the feeding port and the discharging port correspondingly, and first carrier rollers are fixedly installed outside the supporting plates; and a visual window is fixedly arranged in the middle of the front end of the box body, second carrier rollers are movably installed in the middle of the interior of the box body, drying air knives are fixedly installed at the rear ends of the second carrier rollers, the drying air knives are fixedly connected to a forked air duct, and a heat exchanger is fixedly connected to the left end of the forked air duct. When the rapid drying device is used, a stainless steel band is firstly put into the box body from the feeding port, under the action of the first carrier rollers, the plate band is preliminarily positioned, a draught fan is started, the plate band is gradually and completely fed into the box body, the plate band sequentially penetrates through the four sets of second carrier rollers, the drying air knives blow air from the position above the plate band and the position below the plate band, and all-directional drying of the stainless steel band is effectively guaranteed.

The invention relates to the technical field of epoxy zinc-rich coating preparation and discloses bi-component corrosion-prevention and coagulation-prevention modified epoxy zinc-rich coating. In theformula, the bi-component corrosion-prevention and coagulation-prevention modified epoxy zinc-rich coating is prepared from experimental raw materials such as a curing agent and an anti-settling agent, and a modified mannich amide curing agent prepared from cardanol-phenol mixed modified ethanediamine is used. According to the bi-component corrosion-prevention and coagulation-prevention modified epoxy zinc-rich coating, a mixture of gel amorphous silica, the mannich amide curing agent and organic bentonite is used as the ternary mixed anti-settling agent, wherein the mannich amide curing agentserves as a carrier of zinc powder, the problem that the zinc powder is prone to coagulation in liquid coating is well solved, a mixture of propylene glycol monomethyl ether and dipropylene glycol methyl ether is used as a mixed co-solvent, the stability of the metal zinc powder in the liquid coating is improved, a mixture of elementary zinc and zinc hydroxide is used as the metal zinc powder, and the protecting principle of a metal zinc powder sacrificial anode is utilized to obtain excellent corrosion-prevention performance.

The invention provides a preparation method of nano TiO2 photocatalyst particles. The method comprises the following steps: (1) neutralizing precipitation process; (2) dispersion process; (3) oxidative transformation process; (4) curing process. The method not only solves the problem of easy aggregation of the nano TiO2 photocatalyst particles, enables the product particle sizes to be small, enables the average particle size to be less than 30nm and enables the product to be higher in concentration, but also has a good formaldehyde degradation function under the condition of visible light and overcomes the defect that the traditional photocatalyst works only under the condition of ultraviolet light, thus being wider in application scope. The preparation method does not need high-temperature calcination or water-bath heating, is low in requirements for equipment, simple in technological process and easy to operate and control; furthermore, the preparation method can use general industrial grade raw materials, thus being economical and reasonable in cost; therefore, the method has very high market competitiveness and is easy in realization of large-scale industrialization.

The invention discloses an in-situ stirring and continuous sampling device applicable to a small-angle neutron scattering spectrometer. In the device, a sample plate welded with a cuvette pool and with a neutron incident hole is driven to move in a timing and positioning way by a servo motor controlled by a computer so as to achieve the purpose of automatic and continuous sampling. A cuvette loaded with a sample and a magnetic stirrer is placed in the cuvette pool, a magnetic stirring device is controlled to drive the magnetic stirrer to continuously stir at different rotational speeds by thecomputer, so that continuous stirring of a sample is achieved as well as automatic and continuous sampling is achieved. With the in-situ stirring and continuous sampling device provided by the technical scheme of the invention,in-situ structure evolution test of colloid with small-angle neutron easy to coagulate and settle down and particle dispersion sample can be achieved; and moreover, the in-situ stirring and continuous sampling device has the advantages of settling prevention, displacement accuracy, automation, labor saving and the like, is simple to install and easy to disassemble and isapplicable to microstructure evaluation test of systems easy to coagulate such as the colloid and the particle dispersion system in small-angle neutron scattering research.

The invention discloses a ZIF-8/PDMS mixed matrix pervaporation membrane as well as a preparation method and application thereof. The preparation method comprises the following steps of dissolving zinc nitrate hexahydrate and 2-methylimidazole in a solvent, uniformly mixing, and standing to obtain a ZIF-8 precursor solution, penetrating through a PVDF membrane through a suction filtration method to obtain a PVDF membrane I with preset ZIF-8 seed crystals, placing a zinc nitrate hexahydrate solution and a 2-methylimidazole solution on the two sides of the PVDF membrane with the preset ZIF-8 seed crystal respectively through a diffusion method for diffusion crystallization, then taking out the membrane, washing and drying, and acquiring a PVDF substrate membrane II with ZIF-8 crystals, mixing PDMS and a cross-linking agent to obtain a suspension liquid, then adding dibutyltin dilaurate into the suspension liquid, and stirring the mixture to be uniform to obtain a membrane coating liquid, and uniformly coating the PVDF substrate membrane II with the ZIF-8 crystals with the membrane coating liquid, cross-linking at normal temperature, and drying to obtain the PVDF/ZIF-8 composite membrane. The ZIF-8 is loaded on the surface and in pore channels of the PVDF membrane by using a preset seed crystal-pair diffusion growth method, and the PVDF membrane is coated with PDMS to prepare a sandwich structure, so that the problem that the ZIF-8 is easy to aggregate in the PDMS membrane is solved.

The invention discloses a PP soaking tank with a filtering function. The PP soaking tank comprises a tank body, a feeding device is fixedly mounted on each of the two sides of the top of the tank body, a motor is mounted at the top of the tank body, a supporting plate is mounted on each of the left side and the right side of the motor, locking bolts are in threaded connection with the supporting plates, the bottoms of the locking bolts are in threaded connection into threaded sleeves, and the bottoms of the threaded sleeves are welded at the top of the tank body. The PP soaking tank disclosed by the invention has the beneficial effects that through arranging the motor, stirring shafts, a transverse plate, a soaking bag, springs, a flow division table, a filtering tank, piston sleeves, collecting boxes and a precipitation plate, chemical raw materials are poured into the tank body through feeding pipes; the chemical raw materials after being filtered for two times finally precipitate on the precipitation plate and are finally filtered through filtering holes in the precipitation plate, so that impurities in the chemical raw materials are filtered; and finally, the chemical raw materials are discharged through discharging pipes, so that the problem of easy impurity gathering of an existing PP soaking tank is solved.

The invention belongs to a copper phthalocyanine polymer and copper nanowire core-shell nano material in the field of electrochemical carbon dioxide reduction of a nano material catalyst technology, and a preparation method and application thereof. According to the copper phthalocyanine polymer and copper nanowire core-shell nano material disclosed by the invention, a copper nanowire is used as a copper source and a carrier, and a core-shell structure with the copper nanowire as a core and the copper phthalocyanine polymer as a shell is formed. The preparation method comprises the following steps: firstly, synthesizing a copper nanowire through a hydrothermal method, then putting the copper nanowire into a microwave reactor, enabling copper on the surface of the copper nanowire to be coordinated with a cyano group, and forming a two-dimensional cross-linked network copper phthalocyanine polymer on the surface of the copper nanowire as a template, thereby forming the copper phthalocyanine polymer-copper nanowire core-shell nano material. The method can be applied to electrochemical CO2 reduction.