318 results about "Colloidal particle" patented technology

A method of treating or maintaining an apparatus is achieved by subjecting at least one treated component of an apparatus to electrochemical corrosion protection. The treated component has surfaces treated with a coating of a treatment composition of a colloidal particle dispersion having inorganic nanoparticles with an average particle size from 500 nm or less that exhibit properties of Brownian motion. At least some of the inorganic nanoparticles are ionically charged nanoparticles, and wherein at least some of the ionically charged nanoparticles reside on the surfaces when the at least one treated component of an apparatus is subjected to electrochemical corrosion protection.

The invention discloses forest steppe fire extinguishing barrier foam and a preparation method thereof.The foam is prepared from 5%-20% of a material A, 0.5%-0.8% of a material B, 1.8%-3% of a coagulant and the balance water through a foam generation system; the material A is prepared from 1 to 10 parts of organic aggregate and 100 to 200 parts of inorganic aggregate; the material B is composed of 2-7 parts of a composite surfactant and 1-6 parts of a cross-linking agent; the coagulant is carbon dioxide gas. The inorganic aggregate is condensed under the action of hydrogen ions generated by dissolution of carbon dioxide to form colloidal particles, the colloidal particles are polymerized and crosslinked with the organic aggregate to form a gel skeleton of a three-dimensional network structure, the foam is converted into gel foam, and a heat-insulating and anti-burning barrier layer is formed on the surface of a combustible. The fire extinguishing agent is high in fire extinguishing efficiency, good in heat insulation effect and environment-friendly, and has wide application prospects in forest and grassland fire disasters.

The present application relates to a phosphorus-aluminum sol, a preparation method therefor, and a use thereof as a binder in a hydrocarbon oil conversion catalyst. The present application also relates to a hydrocarbon oil conversion catalyst, a preparation method therefor, and a hydrocarbon oil catalytic conversion method using the catalyst. The phosphorus-aluminum sol provided by the present application has an appropriate colloidal particle size, a high degree of polymerization, high stability, and good adhesion, when used in a catalyst containing a molecular sieve, such as an FCC catalyst, the phosphorus-aluminum sol can reduce the blockage of molecular sieve pores, and when synergizing with other matrix materials in the catalyst, the phosphorus-aluminum sol can improve hydrothermal stability, catalytic performance and mechanical strength of the catalyst.

A method of treating or maintaining an apparatus is achieved by subjecting at least one treated component of an apparatus to electrochemical corrosion protection. The treated component has surfaces treated with a coating of a treatment composition of a colloidal particle dispersion having inorganic nanoparticles with an average particle size from 500 nm or less that exhibit properties of Brownian motion. At least some of the inorganic nanoparticles are ionically charged nanoparticles, and wherein at least some of the ionically charged nanoparticles reside on the surfaces when the at least one treated component of an apparatus is subjected to electrochemical corrosion protection.

The invention relates to the technical field of waste liquid treatment, in particular to an automatic fluorine-containing liquid advanced treatment device and method.The automatic fluorine-containing liquid advanced treatment device comprises a waste water collection pool, a three-stage sedimentation pool, a flocculant stirring pool, a clarification pool, a mixed reaction pool and a filter press; the wastewater collection tank, the three-stage sedimentation tank, the flocculant stirring tank, the clarification tank, the mixed reaction tank and the filter press are sequentially arranged from left to right, and the wastewater collection tank, the three-stage sedimentation tank, the flocculant stirring tank, the clarification tank, the mixed reaction tank and the filter press are matched for use; therefore, suspended solids and colloidal particles in the fluorine-containing wastewater can be removed by adopting a mode of combining gravity settling and flocculant putting, and after the suspended solids and colloidal particles in the fluorine-containing wastewater are removed, fluorine ions in the fluorine-containing wastewater are converted into insoluble fluorides to be precipitated by putting the fluorine removal liquid, and finally the insoluble fluorides are removed. Therefore, the removal rate of fluorine ions in the fluorine-containing wastewater can be increased, and the treatment effect of the fluorine-containing wastewater is improved.

Compositions and colloidal particles are provided that may be used to improve a tissue making process. The compositions and colloidal particles may include a polymer and an inorganic salt. A tissue making process carried out using the presently disclosed compositions and colloidal particles may produce a tissue product that has high tensile strength and high softness without using either softeners or debonders.

Provided are a downhole tool, a well system, and a method. The downhole tool, in one aspect, includes a housing, as well as an expandable metal member positioned about the housing, the expandable metal member comprising a metal configured to expand in response to hydrolysis. The downhole tool, according to one aspect, further includes colloid particles surrounding a surface of the expandable metal member.

Provided is a well system, and a method. The well system, in one aspect, includes a wellbore positioned within a subterranean formation, as well as a downhole tool positioned within the wellbore. The downhole tool, according to one aspect, includes a housing, as well as an expandable metal member positioned about the housing, the expandable metal member comprising a metal configured to expand in response to hydrolysis. The well system, in one further aspect, includes a reactive colloidal dispersion of colloid particles surrounding a surface of the expandable metal member.

The present invention discloses a silica sol which is almost free of secondary small particles, a preparation method and an application thereof. The silica sol has the following characteristics: (1) the primary particle size of the colloidal particles is 15-150 nm, the secondary particle size is 36-300 nm, the PDI is between 0.04-0.1, the Di(90) / Di(10) of the particles is between 1.9-2.1, the Di(90) / Di(50) of the particles is between 1.4-1.5, and the proportion of colloidal particles with a colloidal particle circle equivalent diameter less than 10 nm under the TEM field of view is less than 5%; (2) the ratio of the low-field nuclear magnetic wet method specific surface area of ​​the colloidal particles to the dry method gas adsorption BET specific surface area is S N / S B The Q of 29Si-NMR of the colloid particles is between 1 and 3.5. 4 The proportion is 70-72%, Q 3 The proportion is 21-24%, Q 2 The silica sol of the present invention has excellent compactness and concentrated colloidal particle size distribution, and can be used in CMP polishing to reduce defects on the surface of semiconductor devices and silicon wafers.

The present invention relates to the technical field of battery debinding agents, and particularly relates to a debinding agent for new energy batteries and a preparation method thereof. The present invention prepares a debinding agent for new energy batteries with a relatively fast debinding rate by compounding a bio-based composite, polyacrylic acid, a cellulose mixture, a surfactant, a solvent and an antioxidant. Among them, the carboxyl groups in the polyacrylic acid molecules interact with the charges on the surface of the colloidal particles, which can weaken the interaction between the colloidal particles and promote the aggregation of the colloidal particles; the bio-based composite and the cellulose mixture molecules contain active groups such as carboxyl groups and hydroxyl groups, which can break the chemical bonds in the adhesive, reduce the adhesiveness of the adhesive, and form intermolecular hydrogen bonds and van der Waals forces, enhance the interaction force, and improve the structural stability of the debinding agent; the raw materials used in the present invention are easily available, and have good compatibility and biodegradability, with environmental benefits. Compared with the prior art, it has a broad application prospect.

Sulfated bentonite compositions are characterized by a total pore volume from 0.4 to 1 mL / g, a total BET surface area from 200 to 400 m2 / g, and an average pore diameter from 55 to 100 Angstroms. The sulfated bentonite compositions also can be characterized by a d50 average particle size in a range from 15 to 50 μm and a ratio of d90 / d10 from 3 to 15. The sulfated bentonite compositions can contain a sulfated bentonite and from 10 to 90 wt. % of colloidal particles, or the sulfated bentonite compositions can contain a sulfated bentonite and from 0.2 to 10 mmol / g of zinc and / or phosphorus. These compositions can be utilized in metallocene catalyst systems to produce ethylene based polymers.

The invention relates to the technical field of optical thin film materials, and discloses a preparation method and application of a liquid colloidal crystal thin film material. The preparation method of the liquid colloidal crystal film material comprises the following steps: preparing a monodispersed colloidal particle solution; a dual-channel or multi-channel flow control structure is adopted, so that the chaos effect of fluid is optimized, and uniform distribution of nano-particles on a liquid-solid interface is promoted; by accurately controlling the flow speed, the pressure gradient and the flow channel structure, particle aggregation or disordered accumulation is avoided; injecting a colloidal particle solution; after the film is formed, the film structure is ensured to be stable through curing treatment, and the colloidal crystal film with stable optical characteristics is obtained. Through fusion of fluid mechanics, colloidal chemistry and interface engineering technologies and combination of a micro-fluidic technology and a colloidal crystal thin film technology, the technical bottlenecks of a traditional optical thin film material in structural precision, environmental stability and large-scale production are overcome, and a solution is provided for high-safety photoelectric encryption, anti-counterfeiting and flexible optoelectronic devices.

A soil chemistry sensor employs a hydrophilic porous layer to adapt aqueous ion sensors to direct soil measurement by allowing transfer and concentration of water from the soil to the sensing electrodes while blocking electrically charged soil colloidal particles that can interfere with such measurements.

The invention relates to the technical field of wastewater processing, and discloses an ultrapure water recycling and circulating system based on an ion adsorption structure, the ultrapure water recycling and circulating system comprises a placing part, the placing part comprises a tank body, and the bottom of the tank body is fixedly connected with a support frame; the stirring part comprises a connecting shaft, and the outer end of the connecting shaft is rotationally connected with the interior of the tank body. The ultrapure water recycling and circulating system based on the ion adsorption structure can effectively solve the problems that in the prior art, pure water obtained after semiconductor part cleaning treatment contains a large number of positive ions and needs to be adsorbed through colloid in an adsorption tank, a colloid medium makes contact with the polluted pure water depending on natural flowing of fluid, and the pollution is caused. The problems that in the prior art, the phenomena of different local concentrations are generated in the tank body, the colloid particles cannot be uniformly distributed in the adsorption tank, the adsorption process is not uniform, part of colloid particles cannot be effectively adsorbed, the overall adsorption efficiency is low, the treatment effect is reduced, and the subsequent wastewater recycling is influenced are solved.

The invention provides a thermo-sensitive chitosan colloid, a preparation method and application of the thermo-sensitive chitosan colloid in regulation and control of water-in-water emulsion types, N-isopropylacrylamide (NIPAM) is grafted to a chitosan side chain to obtain a polymer with thermo-sensitivity, and then the polymer is induced to form thermo-sensitive responsive chitosan polymer colloid particles (CS-g-PNIPAM CPs) through an external environment. Compared with the prior art, the method has the advantages that the molecular structure is not changed, the hydrophilicity and hydrophobicity of the colloid are changed through external environment stimulation, and the emulsion type is regulated and controlled.

The invention relates to a mud sediment purification method and device, and belongs to the technical field of mud sediment purification. By adding a gel breaker and combining oxidation / acidolysis and thermochemical treatment, stable structures of colloidal particles are destroyed, wrapped fine particles are released, and a surfactant is further added in a partitioned manner by adopting a spiral path, so that the mud sediment purification effect is improved. And stirring is combined to ensure uniform diffusion of the agent, obviously reduce apparent viscosity of the slurry and improve fluidity. Afterwards, the centrifugal-shear synergistic effect of the high-speed centrifugal machine and the hydrocyclone is used for enhancing the particle separation efficiency, shortening the retention time and inhibiting the laminar flow blockage risk; meanwhile, an electric field is applied to drive charged particles to be enriched towards an electrode area. Finally, the water content of the slurry is greatly reduced through a deep dehydration process assisted by a filter aid, and the integrated process not only reduces the hydrodynamic resistance and treats volume expansion, but also remarkably relieves the problems of laminar flow retardation, abrasion and frequent blockage of pipelines and equipment.

The invention belongs to the field of biotechnology and nanometer materials, and relates to a method for enhancing the antibacterial performance of silver nanoparticles based on regulation and control of bacteria to tend to colloidal particle heteroaggregate. After the silver nanoparticles and the iron ore colloidal particles are subjected to heterogeneity agglomeration, the trend movement behavior of bacteria can be regulated and controlled. On one hand, after the silver nanoparticles and goethite particles are subjected to different agglomeration, the negative trend movement behaviors of escherichia coli and shewanella on the silver nanoparticles are weakened, and the weakening degrees are different due to different agglomeration states. And on the other hand, the silver nanoparticle-goethite heteroaggregate is easier to attract bacteria to approach compared with the silver nanoparticles. Test results show that in a disperse system and a non-disperse system, the silver nanoparticle-goethite heteroaggregate shows more excellent antibacterial performance compared with silver nanoparticles. The invention provides a new strategy method for improving the antibacterial performance of the silver nanoparticles in practical application, and the method can be used for regulating and controlling the amount of the silver nanoparticles in an antibacterial material and preparing a novel bacteriostatic agent.

Described are treatment compositions for treating a water source, such as a microelectronics process wastewater, and methods of treating the water source. The composition includes one or more of an inorganic salt, a treatment polymer, and a colloidal particle. A flocculant may be added to the water source before or after the inorganic salt, treatment polymer, and colloidal particle. The methods and compositions may be used for treating wastewater, for example.

The invention discloses a self-growing type nano colloid particle suitable for plugging surface pores of coal gasification fine slag as well as a preparation method and application of the self-growing type nano colloid particle. The self-growing type nano colloid particle comprises 15-35% of a functional polymeric monomer and cross-linked polymeric monomer medicament, 1-10% of a surfactant, 0.01-0.5% of an initiator, 50-75% of white oil and the balance of distilled water, according to the preparation method disclosed by the invention, accurate regulation and control of the water-in-oil type nano-emulsion are realized by adopting a high-shear emulsification technology through directional assembly of a water-phase functional monomer and collaborative construction of an oil-phase stabilization dispersion system. Controllable growth of a polymer network is completed under the protection of an inert atmosphere by a'staged initiation-dynamic crosslinking 'process, and nano colloid particles with self-growth characteristics are successfully prepared in combination with a gradient demulsification and purification strategy. According to the prepared self-growing nano colloid particles, the coal gasification fine slag flotation decarburization separation efficiency is remarkably improved and the flotation reagent consumption is reduced by effectively blocking the surface pore structure of the coal gasification fine slag.

The present application relates to a controllable preparation method of a colloidal crystal capillary column and its application in biomolecule separation, and specifically comprises the following steps: a plunger and an electroosmotic pump are prepared in situ at one end of a capillary; a buffer solution containing monodisperse colloidal particles is filled in an upper reservoir of an electric field assembly device, and a buffer solution is filled in a lower reservoir; the capillary is filled with the buffer solution, and the end of the capillary containing the electroosmotic pump is inserted into the lower reservoir; the dispersion of the colloidal solution is maintained by applying oscillation to the upper reservoir, an electric field is applied between the two reservoirs to make the colloidal particles move to the electroosmotic pump under the action of an electroosmotic flow, and a three-dimensional colloidal crystal is assembled; and the capillary is supplemented with an ultrasonic force to reduce lattice defects. The present application has the advantages of simple preparation process, controlled directional movement of colloidal particles through an electric field, improved assembly efficiency and quality of the three-dimensional colloidal crystal, and controllable assembly of the colloidal particles under the action of an electric field through regulation and control of the length and surface charge of the electroosmotic pump.

This invention provides a controllable transport device and method for inert particles, including a light spot projection structure, a sample stage, a particle carrier, and a camera. The particle carrier is placed on the sample stage, and the light spot projection structure is located below the sample stage, projecting a light spot onto the particle carrier. The camera is located above the sample stage. The particle carrier includes a photocatalytic film, a cover glass, and a gasket. The gasket is disposed between the photocatalytic film and the cover glass, and a cavity is provided in the center of the gasket. The cavity contains a mixed aqueous solution including fuel liquid and inert colloidal particles. This invention does not require the assistance of an external electric field; it only requires modification of the external excitation light source to enable it to generate microscale light spots through a solid mask or a micro-projector device. The device has a simple structure, is easy to operate, low in cost, and has good controllability.

The application discloses a Pickering emulsion based on ring-shaped colloidal particles, a preparation method thereof and application thereof in biphasic interface catalysis. The Pickering emulsion is an oil-in-water emulsion, which comprises a water phase, an oil phase and ring-shaped colloidal particles. The oil phase is dispersed in the water phase in the form of small droplets. The ring-shaped colloidal particles are located at an oil-water interface or at the oil-water interface and the water phase, and the ring-shaped colloidal particles are assembled to form a monolayer structure on the oil-water interface. The Pickering emulsion is not only beneficial to the contact between reactants or between the reactants and a catalyst, but also can enhance the interface mass transfer rate, promote the product to rapidly diffuse from one phase to another phase, has advantages of high conversion rate, high catalytic efficiency, simple product separation and the like, and has an important application prospect in the field of interface catalysis.

The utility model relates to the technical field of anode carbon block production, in particular to a floating knife rest for carbon block surface cleaning, which comprises a knife rest and a knife rest fixing frame, a first end of the knife rest is connected with a first end of the knife rest fixing frame through a rotating hinged support, and a second end of the knife rest is connected with a second end of the knife rest fixing frame through a floating oil cylinder. The knife rest comprises a fixed seat and a plurality of scraper assemblies fixed on the fixed seat, and each scraper assembly comprises a connecting seat, a scraper and an elastic pressing mechanism. During working, the scraper can always keep extrusion force on the surface of a carbon block by adjusting the oil cylinder according to adhesive particle adhesion conditions, cutting strength is guaranteed, deformation and size errors after roasting of the carbon block are automatically adapted through the arrangement of the elastic pressing mechanism, certain pressure is generated on the surface of the carbon block, and the carbon block is prevented from being scraped. Colloidal particles and scum can be scratched more easily, and carbon blocks are not scratched.

The application discloses a structural color pressure-sensitive film based on a hollow polymer colloidal photonic crystal and a preparation method and application thereof, and belongs to the technical field of force-induced color-changing materials. The preparation method of the structural color pressure-sensitive film comprises the following steps: (1) uniformly dispersing core-shell nano colloidal particles in an organic solvent to obtain a colloidal particle dispersion liquid; the shell layer of the core-shell nano colloidal particles is a polymer material, and the core layer is an inorganic oxide; (2) coating the colloidal particle dispersion liquid on the surface of a flexible substrate, and obtaining a precursor photonic crystal film after heating; and after removing the core layer of the core-shell nano colloidal particles in the precursor photonic crystal film by acid treatment etching, the structural color pressure-sensitive film is obtained. The preparation method of the structural color pressure-sensitive film is simple, the conditions are mild, and no pigment dye molecules are needed; by utilizing the pressure deformation and shape memory characteristics of a single hollow polymer colloidal particle itself and the inherent structural color characteristics of a photonic crystal, the structural color pressure-sensitive film can realize the regulation and memory of rich and high-saturation structural colors under the action of pressure.

The present invention belongs to the technical field of the preparation of inorganic functional materials, and particularly relates to a method for preparing amorphous TiO2 colloid. The TiO2 colloidal particles prepared by the present invention have a relatively high crosslinking degree and can be well dispersed in ethanol to form a transparent TiO2 colloid. This method first carries out a complexation reaction between tetrabutyl titanate and acetylacetone to synthesize a tetrabutyl titanate complex, and then ages the reaction solution system at room temperature. The water vapor molecules diffusing from the air react with the tetrabutyl titanate complex to undergo a hydrolysis reaction. The Ti-OH bonds formed by the hydrolysis reaction can easily form Ti-O-Ti bonds through a polycondensation reaction, thereby achieving the purpose of forming a high crosslinking degree; Then, ethanol and water are sequentially added to the system to cause phase separation of the TiO2 colloidal particles therein and precipitate them. Dispersing the separated precipitate in ethanol can obtain a transparent TiO2 colloid.

The utility model discloses a destabilization coagulation separation device and relates to the technical field of sewage treatment. Effluent of the coagulation reaction area enters the flocculation reaction area, effluent of the flocculation reaction area enters the shallow settlement area, an inclined plate is arranged in the middle of the shallow settlement area, a rotary mud scraper is arranged at the lower part of the shallow settlement area, supernate of the shallow settlement area enters the gravity settlement area, the gravity settlement area adopts winding corridor type design, and effluent of the gravity settlement area enters the water outlet groove. The device disclosed by the utility model has the beneficial effects that the gravity settling area is arranged behind the shallow settling area, colloidal particles which do not participate in flocculation are settled in the gravity settling area, the settling time of the colloidal particles is prolonged through the ambulatory design of the gravity settling area, and the settled colloidal particles flow back to the coagulation reaction area through the screw pump B to participate in reaction again after being gathered, so that the flocculation effect is improved. The height of the rectangular water outlet groove is in direct proportion to the flow velocity, the lifting height of the lifting rod is observed through the gradienter, the water outlet flow can be calculated, and metering is simple and reliable.

The invention provides a micro-polluted water purification device and method, and belongs to the technical field of water treatment. The problems that an existing micro-polluted water purification technology is dual-polarized, purification is not thorough, secondary pollution is prone to being generated, and adaptability is poor are solved. The method comprises the following steps: in a pretreatment unit, intercepting large-particle suspended impurities through a bionic cilium type interception structure, and regularly carrying out backwashing; in the bionic primary filtering unit, colloidal particles, microorganisms and macromolecular organic matters are filtered out through a bionic glomerular filtering structure; in the bionic intermediate purification unit, heavy metal ions and small molecular organic matters are adsorbed through a bionic cell membrane adsorption structure; in the bionic deep filtering unit, deep interception and adsorption are carried out through a bionic root system filtering structure; the effluent quality is detected in the effluent unit, and if the water quality does not reach the standard, the effluent flows back to the water inlet end of the pretreatment unit. By means of physical interception and physical adsorption effects of a biological bionic structure and natural degradation of a biological agent, secondary pollution is avoided.

The invention discloses a vertical blocking management and control structure and method for a contaminated site through combination of electrophoresis and microorganisms, and relates to the technical field of soil and underground water remediation management and control. An anti-oxidation graphite electrode is inserted into the boundary of a to-be-managed and controlled area of a polluted site to serve as an anode, a microbial bacterial solution and a cementing solution are injected at the same time, an open-screen steel pipe parallel to the anti-oxidation graphite electrode in a staggered mode is inserted into the managed and controlled area to serve as a cathode, and the adjacent anode and cathode are connected with a direct-current power source through a cable to form a plurality of electrode pairs. Under the action of electrophoresis, clay particles with negative charges and other colloidal particles in soil around the boundary of the site move towards the anode, and along with point cementation among soil particles at the anode and continuous deposition of calcium carbonate under the induction of microorganisms, a vertical barrier wall is finally formed. Colloidal particles in the soil are promoted to be cemented through electrophoresis and microorganisms to form a vertical barrier for risk management and control of a polluted site, and the method has the remarkable advantages of being low in building material dependency degree, small in construction disturbance, easy to maintain in the later period and the like.

The present invention provides a nano EUO type zeolite molecular sieve and a preparation method thereof, and relates to the field of molecular sieve technology. The present invention mixes an aluminum source, an inorganic base, water and a template to obtain an aqueous phase; mixes a silicon source and an organic solvent to obtain an organic phase; and mixes the aqueous phase and the organic phase to perform a dynamic hydrothermal reaction to obtain the nano EUO type zeolite molecular sieve. The present invention adopts a phase transfer method, and by dissolving the aluminum source and the silicon source in different aqueous phases and organic phases, avoids direct contact between the two to form large-particle colloidal particles, and also avoids the direct conversion of large-particle colloidal particles into large-particle zeolite crystals; when the raw materials of the organic phase are slowly transferred to the aqueous phase, the growth process of the zeolite crystals is restricted, thereby obtaining a nanometer morphology. The EUO type zeolite molecular sieve synthesized by the phase transfer method of the present invention has a nanometer morphology (50 to 200 nm), a high degree of crystallinity, and the synthesis time of the method of the present invention is short.

The utility model relates to a double-screw structure of a pre-dispersed master colloidal particle extruder, and aims to solve the problems that the conventional screw is inconvenient to disassemble, and the two screws are possibly abraded and collided due to mutual collision caused by shaking when the screw is directly disassembled. The device comprises a supporting plate, a rotating shaft, an extrusion barrel and a driving gear, an outer frame is fixedly connected to the surface of the supporting plate, the extrusion barrel is movably connected to the inner side of the outer frame in an inserted mode, and inserting grooves are formed in the centers of the left end and the right end of the supporting plate; an insertion plate is transversely and slidably connected to the inner side of the insertion groove, a rotating shaft is rotatably connected to the surface of the side, facing the outer frame, of the insertion plate, a limiting plate is fixedly connected to the outer side wall of the rotating shaft, and threaded cylinders movably sleeve the outer side walls of the rotating shaft and the limiting plate; the connecting structure has the characteristics of simple structure, convenience in disassembly and capability of ensuring that the connection stability is not influenced by repeated disassembly.