511 results about "Colloidal particle" patented technology

The invention discloses a high-biocompatibility pH response type Pickering emulsion and a preparation method thereof, and relates to the technical field of food and materials. An interfacial film with high mechanical strength is constructed by adopting electrostatic interaction and hydrophilic-hydrophobic complementary characteristics between the hydrophobic shellac nanoparticles carrying negative charges and the hydrophilic cationic colloidal particles carrying positive charges, and the prepared emulsion has good viscoelasticity and stability. In addition, due to the unique solubility of the shellac nanoparticles, the Pickering emulsion prepared by the preparation method disclosed by the invention has excellent pH responsiveness. The preparation method of the Pickering emulsion is convenient and simple, the stabilizer is wide in source and low in price, the biocompatibility of the emulsion is high, and the Pickering emulsion has wide application prospects in the aspects of food, medicine, materials and the like.

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 provides a method for cleaning organic glue residues on the surface of a carrier plate, which comprises the following steps of: acquiring surface cleanliness data in a cleaning process in real time by adopting a carrier plate surface cleanliness online monitoring device, analyzing a cleanliness change trend in real time through an algorithm, and dynamically adjusting soaking, oscillating and flushing treatment parameters and a circulation path, so as to realize cleaning of the organic glue residues on the surface of the carrier plate. Adaptively optimizing a cleaning scheme, and predicting a cleaning end point; deploying a colloidal particle agglomeration degree analyzer in the water tank, monitoring the agglomeration state data of colloidal particles in real time, analyzing the relevance between the agglomeration state and water quality parameters through an algorithm model, dynamically adjusting the pH value and ionic strength of ultrapure water, optimizing the water quality environment, and inhibiting redeposition of the colloidal particles.

The invention relates to high-peptization pseudo-boehmite and a preparation method thereof, and belongs to the technical field of porous aluminum oxide preparation. The method comprises the following steps: obtaining slurry containing pseudo-boehmite colloidal particles; mixing the slurry containing the pseudo-boehmite colloidal particles with an alkaline auxiliary agent to obtain a mixed solution; and aging the mixed solution at a set temperature so as to enable the alkaline additive to perform surface modification on the pseudo-boehmite colloidal particles, thereby obtaining the high-peptizing-solubility pseudo-boehmite. According to the invention, the alkaline auxiliary agent acts on the colloidal particle surface of the pseudo-boehmite at a proper temperature, so that the pore structure of the pseudo-boehmite is maintained, and meanwhile, the pseudo-boehmite with high peptizing property is constructed.

The invention relates to the technical field of photovoltaics, in particular to a method for testing the grafting rate of silane grafted polyolefin for a photovoltaic packaging adhesive film. Comprising the following steps: S1, extracting a silane grafted polyolefin grafting material in an organic solvent to remove unreacted silane or residual peroxide, washing for multiple times after extraction is completed, and drying for later use; and S2, weighing and recording the mass of the crucible and the extracted silane grafted polyolefin colloidal particles, then putting the crucible filled with the colloidal particles into TGA for calcination, weighing the total mass of the crucible and the sample after calcination is finished, and converting the relative grafting rate by using the ash content of the TGA. According to the invention, the grafting rate of silane grafted polyolefin can be timely and effectively tested and evaluated, so that the grafting stability in the grafting material production process can be truly reflected. Meanwhile, the grafting rate testing method is high in efficiency, simple and reliable to operate.

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 pseudo-boehmite and a preparation method thereof, and belongs to the technical field of porous alumina preparation. The method comprises the following steps: carrying out neutralization reaction on aluminum sulfate and an alkali source to obtain pseudo-boehmite colloidal particle slurry; aging the pseudo-boehmite colloidal particle slurry to obtain aged slurry with a set pH value; carrying out solid-liquid separation on the aged slurry to obtain a solid-phase substance; and washing the solid-phase substance for multiple times by using an alkaline solution containing ammonium ions so as to remove sulfate radicals carried by the solid-phase substance, thereby obtaining the pseudo-boehmite. Through the synergistic effect of the aging slurry with the set pH value and the alkaline solution containing ammonium ions, the content of sulfate radicals in the pseudo-boehmite is specifically reduced.

The invention discloses a method and device for reducing tail water plume of a deep-sea mining vehicle. The device comprises a crushing device, a liquid storage device, a centrifugal action device, an intelligent control device, a magnetic seed laying and recycling device and a super-magnetic separation device. The crushing device comprises a crusher, the liquid storage device comprises a liquid storage tank and a control valve, the liquid storage tank comprises a coagulant aid liquid storage tank and a coagulant liquid storage tank, the centrifugal action device comprises a centrifugal machine, a magnet, a liquid conveying pipe and a magnetic seed dispenser, and the centrifugal action device screens particles with different diameters in a water body to different layers through centrifugation. Under the action of the magnet, the magnetic field intensity in each layer is different, and the magnetic seeds with different particle sizes are combined with particle impurities in seawater under the action of a coagulant aid coagulant, so that a better flocculation effect is realized. Polyferric sulfate is adopted as a coagulant and can be used for treating heavy metal ions in water, polyacrylamide is adopted as a coagulant aid, suspended solids and colloidal particles in water can be effectively captured and adsorbed, and sedimentation and separation of the suspended solids and colloidal particles are promoted.

This invention belongs to the field of sensors, and relates to a polymer ionogel membrane for capacitive sensors, its preparation method, and the capacitive sensor itself. One side of the membrane has a layer of spontaneously crystallized polymer ionogel particles. The gel particles have a spherical or near-spherical structure, and the gel particle layer forms an uneven structure on one side surface of the membrane. Each gel particle includes a porous polymer backbone and an ionic liquid located within the pores. The polymer backbone includes an enriched first PVDF-based polymer. Adjacent polymer ionogel particles are mainly connected by a second PVDF-based polymer. The composition of the polymer ionogel membrane includes a PVDF-based polymer to ionic liquid mass ratio of 1:2 to 2:1. Based on the mass of the PVDF-based polymer, the content of the first PVDF-based polymer is 80wt% to 95wt%, and the content of the second PVDF-based polymer is 5wt% to 20wt%. When used in a capacitive sensor, the gel membrane can improve detection sensitivity.

The invention relates to the technical field of composite materials, in particular to a long glass fiber reinforced plastic preparation process autonomous regulation and control method based on image vision, which comprises the following steps: judging the color difference interval of glass fiber and a standard sample, and judging whether floating fiber exists in colloidal particles or not according to the color difference interval; judging whether the floating fiber condition is in a first floating fiber degree or a second floating fiber degree according to the floating fiber ratio; in the first fiber floating degree, judging that the fiber floating reason is insufficient and non-uniform impregnation according to the diameter difference between the material diameters; judging whether the equipment parameters are in a preset range, and adjusting the equipment parameters; in the second floating fiber degree, the deviation condition is judged according to the diameter difference value of the materials; and judging whether the offset degree is a first category or a second category according to the offset, analyzing the offset trend, and adjusting the proportion or traction force of the polypropylene resin. By performing image view analysis on the colloidal particles prepared from the long glass fiber reinforced plastic, the reason of fiber floating is judged, and the preparation process is correspondingly regulated and controlled.

The invention discloses a preparation method of a colored passive radiation cooling coating, the colored passive radiation cooling coating is composed of a thermal radiation base layer and a colloid photonic crystal reflecting layer, monodisperse colloid particles are assembled on the surface of the thermal radiation base layer by means of spray coating, roll coating, brush coating or blade coating, and the colored passive radiation cooling coating is prepared. The preparation method is simple and easy to implement, high in compatibility and capable of achieving large-area construction. The prepared passive radiation cooling coating has high sunlight reflectivity and infrared thermal emissivity, shows excellent passive radiation cooling performance, and can greatly save refrigeration energy consumption. Meanwhile, the coating is stable and adjustable in appearance color, green and environment-friendly, can meet the color requirements of decoration, appreciation and the like, and has high commercial popularization value.

The invention provides an LED die bonding glue material evaluation method and system and computer equipment, and the method comprises the steps: dispensing multiple times of glue in a single support bowl cup to form a plurality of colloidal particles; standing part of the colloidal particles in a preset environment for preset observation time, observing and detecting forms and performances of the colloidal particles in different stages during standing, and recording corresponding data; judging whether the colloidal particles are preliminarily qualified or not based on the form change and the performance change of the colloidal particles; and if the chip is judged to be preliminarily qualified, carrying out die bonding operation on the chip through corresponding glue, detecting a die bonding condition through detection equipment, and evaluating whether the chip meets a preset requirement or not according to a detection result. According to the method and the device, the actual batched trial-production combat is simulated, and the risk problem points are exposed in advance, so that the glue material for die bonding is quickly screened, the material meeting the requirement is obtained, and the evaluation period is shortened.

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.

The invention provides a mesoporous substrate seepage-guided colloid self-assembly collaborative printing cross-scale micro-nano manufacturing method, which comprises the following steps: placing an open container containing colloid suspension in a closed environment for slow evaporation, and forming a mesoporous substrate with a flat surface in the container; a mesoporous base material is used as a substrate, colloidal suspension liquid is injected / jetted onto the substrate, colloidal liquid drops are rapidly spread and strongly imbibed by the substrate, so that colloidal particles in the liquid are induced to be rapidly assembled on the surface of the substrate, and finally an ordered colloidal photonic crystal structure is formed. The technology of combining the mesoporous base material with printing technologies such as slit coating, ink-jet printing and direct writing printing is utilized to realize ultrafast self-assembly of colloidal particles on the surface of the mesoporous base material, and the large-area patterned colloidal photonic crystal is obtained. The method is simple in process, more importantly, efficient, rapid and cross-scale preparation of the patterned colloid photonic crystal can be achieved, and the preparation time is shortened by two orders of magnitude on the premise that the quality of a colloid assembly is guaranteed.

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.

The invention provides a preparation method of a special aluminum electrolytic capacitor for a low-temperature-resistant detonator trigger, and the method comprises the following steps: cutting a positive electrode foil and a negative electrode foil, and riveting the cut positive electrode foil and negative electrode foil with a positive guide pin and a negative guide pin; placing electrolytic paper between the riveted positive electrode foil and negative electrode foil, winding the electrolytic paper to form a core package, injecting electrolyte into the core package, and sealing the core package in an aluminum shell by using colloidal particles to obtain a semi-finished capacitor; and cleaning the semi-finished product capacitor, sleeving, and sequentially carrying out primary aging sorting, secondary aging sorting, appearance observation and inspection to obtain the capacitor. The preparation method of the aluminum electrolytic capacitor special for the low-temperature-resistant detonator trigger is simple in production process, common in material and low in price, and the prepared aluminum electrolytic capacitor is excellent in electrical performance, wide in working temperature range and small in size.

The invention belongs to the technical field of biological materials, and relates to modified hyaluronic acid with antibacterial and whitening effects and application of the modified hyaluronic acid in a medical beauty filler. According to the preparation method, an ultraviolet irradiation reduction technology is adopted, a hyaluronic acid aqueous solution is used as a polymer dispersion platform, a silver nano colloidal particle dispersion system is constructed, the silver nano colloidal particle dispersion system is converted into HA-Ag powder after being dried, and the HA-Ag powder and carboxymethyl chitosan are mutually cooperated, so that the product is endowed with excellent antibacterial performance. A microcapsule technology is introduced, astaxanthin is selected as a capsule core component, and by virtue of protection of sodium hyaluronate, the stable existence time of astaxanthin is prolonged, and the oxidation resistance of the product is greatly improved. The vitamin C and the arbutin are blended into the microcapsule wall material, and then the microcapsule wall material is mixed with the nicotine amide for use, so that the vitamin C can reduce oxidized astaxanthin while the whitening effect is enhanced, the antioxidant activity of the oxidized astaxanthin is recovered, and the antioxidant effect is further amplified.

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 invention discloses a device and a method for removing micro-plastics in water by a flocculation and electroflotation combined process, the device comprises an electroflotation tank, a plurality of rotational flow tanks and an annular flocculation tank, the electroflotation tank is positioned in the middle of the flocculation tank, and the rotational flow tanks are positioned between the electroflotation tank and the flocculation tank and are arranged at equal intervals. The method comprises the following steps: S1, electroflotation treatment; s2, rotational flow treatment: S2-1, multi-stage rotational flow treatment; s2-2, carrying out graded rotational flow treatment; and S3, flocculation treatment. After the electroflotation tank, the rotational flow tank and the flocculation tank are integrated and optimized, rapid and efficient treatment of micro-plastics in sewage is realized, firstly, the negative charge stability of micro-plastic colloidal particles is destroyed through electroflotation, so that surface charges of the micro-plastics are reduced, and micro-floccules are formed; therefore, subsequent PAC is more facilitated to realize colloid destabilization, flocculation and sedimentation to remove the micro-plastic, and micro-plastic particle pollutants with different sizes can be effectively removed.

The present invention discloses a method for preparing Lactobacillus casei and a preparation thereof. The Lactobacillus casei was deposited in the China General Microbiological Culture Collection Center on July 6, 2022, with a deposit number of CGMCC No. 25194. The preparation method of the double-layer emulsion probiotic preparation comprises the following steps: (1) vortexing Lactobacillus casei and a probiotic protective agent solution to uniformly disperse them to form an inner water phase W1; (2) dissolving ursolic acid in oil to form an oil phase O, and mixing the oil phase O with the inner water phase W1 by high-speed shearing to obtain an oil-in-water type colostrum W1 / O; (3) using a suspension of colloidal particles as an external water phase W2, adding the external water phase W2 to the colostrum W1 / O, and mixing by medium-speed shearing to obtain a double-layer emulsion probiotic preparation with a W1 / O / W2 type double emulsion structure.

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 relates to impact-resistant synergistic organic glass and a manufacturing method thereof.The method comprises the steps that core-layer seed forming, core-layer growing, shell-layer forming, impurity removal and concentration are conducted, nano-sized core-shell colloidal particles are obtained, during core-layer growing, a first functional monomer containing a first functional group is added, and during shell-layer forming, a second functional monomer containing a second functional group is added; adding a second functional monomer containing a second functional group; pre-dispersion liquid containing core-shell colloidal particles, a dispersing agent and an MMA monomer is formed; preparing a liquid base material; the temperature condition is controlled, the liquid matrix material is polymerized to form a solid matrix, at the moment, a transition area between the shell layer and the matrix is a compatible interface formed by polymerization and curing of the MMA permeable layer, chemical bonding is formed between the first functional group and the second functional group, chemical bonding is formed between the second functional group and the third functional group, and the solid matrix is formed. The impact-resistant synergistic organic glass is obtained. The impact resistance of the organic glass can be improved, and meanwhile, the original basic mechanical property and high visible light transmittance are reserved.